MP2632BGR-Z [MPS]
Power Supply Support Circuit,;
| 型号： | MP2632BGR-Z |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | Power Supply Support Circuit, |
| 文件： | 总43页 (文件大小：1978K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP2632B
All-In-One, 3A, Battery Charger with 3A
Boost Current with Independent Torch-On
and BATT_UVLO Latch-Off Funtion
DESCRIPTION
FEATURES
The MP2632B is a highly integrated, flexible,
switch-mode battery charger with system
power-path management designed for single-
cell Li-ion or Li-polymer batteries for use in a
wide range of applications.
Up to 20V Sustainable Input Voltage
4.65V to 6V Operating Input Voltage Range
Power Management Function, Integrated
Input Current Limit, Input Voltage
Regulation
Up to 3A Programmable Charge Current
Trickle-Charge Function
Selectable 4.2V / 4.35V / 4.45V Charge
Voltage with 0.5% Accuracy
4-LED Driver for Battery Fuel Gauge
Indication
Automatic Turn-Off at Light Load
Input Source Detection
The MP2632B can operate in both charge
mode and boost mode to allow for full-system
and battery-power management.
The MP2632B has an integrated VIN-to-SYS
pass-through path to pass the input voltage to
the system. The pass-through path has built-in
over-voltage (OVP) and over-current protection
(OCP) and a higher priority over the charging
path.
Output Source Signaling
Independent Torch-Light Control
Negative Temperature Coefficient Pin (NTC)
for Battery Temperature Monitoring
Programmable Timer Back-Up Protection
Thermal Regulation and Thermal Shutdown
Internal Battery Reverse Leakage Blocking
Integrated Over-Voltage Protection (OVP)
and Over-Current Protection (OCP) for
Pass-Through Path
Reverse Boost Operation Mode for System
Power
Up to 3.0A Programmable Output Current
Limit for Boost Mode
When the input power is present, the MP2632B
operates in charge mode. The MP2632B
detects the battery voltage automatically and
charges the battery in three phases: trickle
current, constant current, and constant voltage.
Other features include charge termination and
auto-recharge. The MP2632B also integrates
both input current limit and input voltage
regulation to manage the input power and
prioritize the system load.
In the absence of an input source, the
MP2632B switches to boost mode through PB
to power SYS from the battery. In boost mode,
the OLIM pin programs the output current limit,
and the MP2632B turns off at light load
automatically. The MP2632B also allows for
output short-circuit protection (SCP) to
disconnect the battery completely from the load
in the event of a short-circuit fault. Normal
operation resumes once the short-circuit fault is
removed.
Integrated Short-Circuit Protection (SCP)
and Output Over-Voltage Protection (OVP)
for Boost Mode
Available in a QFN-26 (4mmx4mm)
Package
APPLICATIONS
Sub-Battery Applications
Power-Bank Applications for Smartphones
Tablets and Other Portable Devices
A 4-LED driver is integrated for voltage-based
fuel gauge indication. Together with torch-light
control, the MP2632B provides an all-in-one
solution for power banks and similar
applications without an external microcontroller.
All MPS parts are lead-free, halogen-free, and adhere to the RoHS
directive. For MPS green status, please visit the MPS website under
Quality Assurance. “MPS” and “The Future of Analog IC Technology” are
registered trademarks of Monolithic Power Systems, Inc.
The MP2632B is available in a QFN-26
(4mmx4mm) package.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
1
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
TYPICAL APPLICATION
USB OUTPUT
CSYS
C2
USB INPUT
PB
SYS
DM2 DP2
RS1
L1
5V Input
ICHG
SW
VBATT
IBATT
VIN
CIN
Q1
Q2
Q3
CBATT
CSP
Battery
Q4
DM1
BATT
VNTC
DP1
NTC
TC
VNTC
MP2632B
VBATT
VCC
LED1
LED2
C4
VB
ILIM
LED3
LED4
TMR
VCC
OLIM
ISET
AGND
PGND
RILIM ROLIM RISET
CTMR
Table 1: Operation Mode Control
VIN (V)
PB
Operation Mode
Q1, Q2
Q3
Q4
VBATT + 300mV < VIN < 6V
X
Charging
Discharging
(boost)
On
SW
SW
SW
From H to L
for >1.5ms
VIN < VBATT + 300mV
Off
SW
VIN > 6V
VIN < 2V
X
OVP
Off
Off
Off
Off
Off
Off
H or L
Sleep
KEY:
X: Don't care
On: fully on
Off: fully off
SW: switching
MP2632B Rev. 1.0
www.MonolithicPower.com
2
3/9/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
ORDERING INFORMATION
Part Number*
Package
Top Marking
MP2632BGR
QFN-26 (4mmx4mm)
See Below
* For Tape & Reel, add suffix –Z (e.g.: MP2632BGR–Z)
TOP MARKING
MPS: MPS prefix
Y: Year code
WW: Week code
M2632B: Product code of MP2632BGR
LLLLLL: Lot number
PACKAGE REFERENCE
TOP VIEW
LED1 LED2 LED3 LED4 CSP BATT
VB
20
26
25
24
23
22
21
19
18
17
16
15
14
13
NTC
VNTC
AGND
VCC
PGND
SW
1
2
3
4
5
SYS
SYS
VIN
OLIM
ISET
TMR
6
7
8
9
10
11
12
DM1
DP1 TC ILIM DM2 DP2
PB
QFN-26 (4mmx4mm)
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
3
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
PIN FUNCTIONS
P/N Name
I/O
Description
1
2
PGND
SW
Power
Power
Power ground.
Switch output node. Do not place vias on the SW plane during the PCB layout.
System output. Place a minimum 22µF ceramic capacitor as close to SYS and
PGND as possible. The total capacitance should not be lower than 44µF.
3, 4
5
SYS
VIN
Power
Adapter input. Place a bypass capacitor close to VIN to prevent large input voltage
spikes.
Power
Negative pin of the input USB data line pair. DM1 together with DP1 implements
USB host/charging port detection automatically.
6
DM1
DP1
TC
I
I
Positive pin of the input USB data line pair. DP1 together with DM1 implements
USB host/charging port detection automatically.
7
Torch-control output. TC is an open-drain structure. The internal driver MOSFET
is on when PB is pulled low for more than 1.5ms twice within one second.
8
O
I
Input current set. Connect ILIM to GND with an external resistor to program the
input current limit in charge mode.
9
ILIM
Negative pin of the output USB data line pair. DM2 together with DP2 provides
the correct voltage signal for attached portable equipment to perform DCP detection
automatically.
10
11
DM2
DP2
O
O
Positive pin of the output USB data line pair. DP2 together with DM2 provides
the correct voltage signal for attached portable equipment to perform DCP detection
automatically.
Push button input. Connect a push button from PB to AGND. PB is pulled up by a
resistor internally. When PB is set from high to low for more than 1.5ms, the boost
is enabled and latched if VIN is not available.
LED1-4 are on for five seconds whenever PB is set from high to low for more than
1.5ms.
12
PB
I
If PB is set from high to low for more than 1.5ms twice within one second and the
torch light is off, the torch light drive MOSFET is on and latched. However, if PB is
set from high to low for more than 1.5ms twice within one second and the torch
drive MOSFET is on, the torch light drive MOSFET turns off.
If PB is set from high to low for more than 2.5 seconds, this is defined as a long
push, and boost is shut down manually.
Oscillator period timer. Connect a timing capacitor between TMR and GND to set
the oscillator period. Short TMR to GND to disable the timer function.
13
14
15
TMR
ISET
OLIM
I
I
I
Programmable charge current. Connect an external resistor to GND to program
the charge current.
Programmable output current limit for boost mode. Connect an external resistor
to GND to program the system current in boost mode.
Internal circuit power supply. Bypass VCC to GND with a ceramic capacitor no
higher than 100nF. VCC cannot carry an external load higher than 5mA.
16
17
VCC
I
AGND
I/O
Analog ground.
Pull-up voltage source for the NTC function. VNTC is connected to VCC through
an internal MOSFET. VNTC is disconnected from VCC during sleep mode. VNTC
should be the pull-up voltage of the external NTC resistive divider.
18
VNTC
O
19
20
NTC
VB
I
I
Negative temperature coefficient (NTC) thermistor.
Programmable battery regulation voltage. Leave VB floating for 4.2V. Connect
VB to logic high for 4.45V. Connect VB to GND for 4.35V.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
4
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
PIN FUNCTIONS (continued)
P/N Name
I/O
Description
21
22
BATT
CSP
I
I
Positive battery terminal/battery charge current sense negative input.
Battery charge current sense positive input.
Fuel gauge indication. LED4 together with LED1, LED2, and LED3 implements
the voltage-based fuel gauge indication.
23
24
25
26
LED4
LED3
LED2
LED1
O
O
O
O
Fuel gauge indication. LED3 together with LED1, LED2, and LED4 implements
the voltage-based fuel gauge indication.
Fuel gauge indication. LED2 together with LED1, LED3, and LED4 implements
the voltage-based fuel gauge indication.
Fuel gauge indication. LED1 together with LED2, LED3, and LED4 implements
the voltage-based fuel gauge indication.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
5
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
Thermal Resistance (5) θJA
θJC
ABSOLUTE MAXIMUM RATINGS (1)
VIN to PGND ............................... -0.3V to +20V
SYS to PGND............................. -0.3V to +6.5V
SW to PGND ........-0.3V (-2V for 20ns) to +6.5V
BATT to PGND ........................... -0.3V to +6.5V
All other pins to AGND................ -0.3V to +6.5V
QFN-26 (4mmx4mm)..............44........ 9.... °C/W
NOTES:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-to-
ambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. Exceeding the maximum allowable power
dissipation produces an excessive die temperature, causing
the regulator to go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) To charge a battery completely, VIN_MIN should satisfy VSYS
and be 450mV higher than the VBATT_REG threshold.
5) Measured on JESD51-7, 4-layer PCB.
(2)
Continuous power dissipation (TA = +25°C)
................................................................2.84W
Junction temperature...............................150°C
Lead temperature (solder) .......................260°C
Storage temperature................-65°C to +150°C
Recommended Operating Conditions (3)
(4)
Supply voltage (VIN) ..................4.65V
to +6V
IIN ..........................................................up to 3A
ISYS........................................................up to 3A
ICC .........................................................up to 3A
VBATT ................................................up to 4.45V
Operating junction temp. (TJ) ...-40°C to +125°C
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
6
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
ELECTRICAL CHARACTERISTICS
VIN = 5.0V, RS1 = 10mΩ, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
47
Typ
55
26
26
7
Max
62
Units
mΩ
mΩ
mΩ
A
VIN-to-SYS N-FET on resistance RVIN to SYS VCC = 5V
High-side P-FET on resistance
Low-side N-FET on resistance
RH_DS
RL_DS
VCC = 5V
18
31
VCC = 5V
18
31
CC charge mode/boost mode
TC charge mode
5.7
1.9
9.0
3.0
High-side P-FET peak current
limit
IPEAK_HS
IPEAK_LS
2.3
A
Low-side N-FET peak current
limit
6.4
8.0
9.6
A
Switching frequency
VCC UVLO
Fsw
500
600
2.16
100
800
kHz
V
VCC_UVLO
1.96
2.36
VCC UVLO hysteresis
Charge Mode
mV
Charge mode, ISYS = 0, battery
float
Input quiescent current
Input current limit for DCP
Input current limit for SDP
IIN
1.8
2.5
mA
mA
mA
RlLIM = 88.7kΩ
380
740
435
820
490
900
IIN_LIMIT RlLIM = 49.9kΩ
RlLIM = 14.7kΩ
2580
2840
3100
SDP is detected using DP1/
DM1 detection
IUSB
400
450
500
6.2
Input over-voltage protection
VIN_OVP hysteresis
VIN_OVP VIN rising
VIN falling
5.75
6.0
250
3.30
155
5
V
mV
V
Input under-voltage lockout
VUVLO hysteresis
VIN_UVLO VIN falling
VIN rising
3.15
3.45
mV
A
Input over-current threshold
IIN_OCP
Input over-current blanking time
τINOCBLK
τINRECVR
200
150
µs
(6)
Input over-current recover time
ms
(6)
Connect VB to GND
4.328 4.350 4.372
4.179 4.200 4.221
4.428 4.450 4.472
Battery regulation (charge full)
voltage
VBATT_REG Leave VB floating
Connect VB to VCC
V
V
V
Connect to VB to GND
4.10
3.95
4.19
3.00
2.90
3.07
4.16
4.02
4.26
3.07
2.96
3.14
4.22
4.08
4.32
3.13
3.02
3.2
Recharge threshold
VRECH
Leave VB floating
Connect VB to VCC
Connect VB to GND
Trickle charge voltage threshold
VBATT_TC Leave VB floating
Connect VB to VCC
MP2632B Rev. 1.0
www.MonolithicPower.com
7
3/9/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
ELECTRICAL CHARACTERISTICS (continued)
VIN = 5.0V, RS1 = 10mΩ, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Trickle charge hysteresis
220
mV
101.5 103.5 105.5 VBATT_
Battery over-voltage threshold
VBOVP
As a percentage of VBATT_REG
%
900
1800
2700
90
%
%
REG
RS1 = 10mΩ, RISET = 150kΩ
RS1 = 10mΩ, RISET = 75kΩ
RS1 = 10mΩ, RISET = 49.9kΩ
1000
2000
3000
280
1100
2200
3300
400
Fast charge (CC) current
ICC
mA
Trickle charge current
ITC
mA
mA
Termination charge current
ITERM
RS1 = 10mΩ
90
200
300
Input voltage regulation
reference
VREG
4.55
4.65
4.75
V
Boost Mode
SYS voltage range
ISYS = 100mA
5.0
5.6
5.1
5.8
5.2
6.0
V
V
Threshold over VSYS to turn off
VSYS(OVP) the converter during boost
mode
Boost SYS over-voltage
protection threshold
SYS over-voltage protection
threshold hysteresis
VSYS falling from VSYS(OVP)
330
mV
mA
ISYS = 0, boost mode, in test
IQ_BOOST
Boost quiescent current
1.65
mode with auto-off disabled
RS1 = 10mΩ, ROLIM = 150kΩ
0.9
2.34
2.8
1.0
2.50
3.0
1.1
2.66
3.2
Programmable boost output
current-limit accuracy
IOLIM
RS1 = 10mΩ, ROLIM = 60.4kΩ
RS1 = 10mΩ, ROLIM = 49.9kΩ
A
SYS over-current blanking time
τSYSOCBLK
τSYSRECVR
150
1.5
µs
(6)
SYS over-current recover time
ms
(6)
System load to turn off boost
Light-load blanking time (6)
INOLOAD Battery current in boost mode
50
85
16
120
mA
s
During boost, VBATT falling
After charge, before boost
starts, in open loop, SYS =
5.2V, ramp up VBATT and push
PB
2.76
2.98
V
Weak battery latch threshold
VBATT_UVLO
3.295
V
Sleep Mode
VBATT = 4.2V, SYS float, VIN =
0V, not in boost mode
Battery leakage current
ILEAKAGE
13
16
μA
MP2632B Rev. 1.0
www.MonolithicPower.com
8
3/9/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
ELECTRICAL CHARACTERISTICS (continued)
VIN = 5.0V, RS1 = 10mΩ, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Indication and Logic
LED1, LED2, LED3, and LED4
output low voltage
Sinking 5mA
200
550
0.2
mV
mV
µA
TC output low voltage
Sinking 100mA
Connected to 5V
LED1, LED2, LED3, LED4, TC
leakage current
INOVP, BOVP and NTC, fault
blinking frequency (6)
1
Hz
PB input logic low voltage
PB input logic high voltage
Protection
0.4
V
V
1.4
CTMR = 0.1µF, remains in TC
mode, ITC = 250mA
Trickle charge time
16
min
min
Total charge time
CTMR = 0.1µF, ICC = 1A
390
65.2
%
66.2
%
67.2
%
NTC low temp, rising threshold
RNTC = NCP18XH103(0°C)
NTC low temp, rising threshold
hysteresis
2.4%
VSYS
NTC high temp, rising
threshold
34.7
%
35.7
%
36.7
%
RNTC = NCP18XH103(50°C)
Charge mode
NTC high temp, rising
threshold hysteresis
2%
Charging current foldback
threshold (6)
Thermal shutdown threshold (6)
Input DP1/DM1 USB Detection
DP1 voltage source
120
150
°C
°C
VDP_SRC
IDP_SRC
0.5
7
0.6
0.7
13
V
Data connect detect current
source
μA
DM1 sink current
IDM_SINK
IDP_LKG
50
-1
100
150
1
μA
mA
mA
V
Leakage current input
DP1/DM1
IDM_LKG
-1
1
Data detect voltage
VDAT_REF
VLGC_LOW
0.25
0.4
0.8
Logic low (logic threshold)
DM pull-down resistor
V
19
kΩ
Logic I/O Characteristics
Low-logic voltage threshold
High-logic voltage threshold
VL
0.4
V
V
VH
1.3
MP2632B Rev. 1.0
www.MonolithicPower.com
9
3/9/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
ELECTRICAL CHARACTERISTICS (continued)
VIN = 5.0V, RS1 = 10mΩ, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Output DP2/DM2 USB Signaling
BC1.2 DCP Mode
DP2 and DM2 short resistance
BC1.2 SDP Mode
VDP = 0.8V, IDM = 1mA
158
200
Ω
DP2 pull-down resistance
DM2 pull-down resistance
Divider Mode
11
11
15
15
19
19
kΩ
kΩ
DP2 output voltage
VOUT = 5V
VOUT = 5V
2.6
2.6
26
2.7
2.7
31
2.8
2.8
36
V
V
DM2 output voltage
DP2/DM2 output impedance
1.2V/1.2V Mode
kΩ
DP2/DM2 output voltage
DP2/DM2 output impedance
VOUT = 5V
1.21
60
1.26
78
1.31
90
V
kΩ
Voltage-Based Fuel Gauge (VOREG = 4.2V, Charge Mode)
First level of battery voltage
threshold
3.52
3.70
3.92
3.60
500
3.80
500
4.00
500
3.69
3.91
4.11
V
mV
V
Hysteresis
Second level of battery voltage
threshold
Hysteresis
mV
V
Third level of battery voltage
threshold
Hysteresis
mV
Voltage-Based Fuel Gauge (VOREG = 4.2V, Discharge Mode)
First level of battery voltage
threshold
3.40
3.55
3.70
3.85
3.47
500
3.62
500
3.77
500
3.92
500
3.54
3.69
3.84
3.99
V
mV
V
Hysteresis
Second level of battery voltage
threshold
Hysteresis
mV
V
Third level of battery voltage
threshold
Hysteresis
mV
V
Fourth level of battery voltage
threshold
Hysteresis
mV
NOTE:
6) Guaranteed by design.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
10
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 5V, CIN = CBATT = CSYS = C2 = 22µF, L1 = 2.2µH, RS1 = 10mΩ, C4 = CTMR = 0.1µF, battery
simulator, unless otherwise noted.
Fast Charge Efficiency
VIN = 5V, VBATT_REG = 4.2V, ICC = 3A
Constant-Voltage Charge Efficiency
VIN = 5V, VBATT_REG = 4.2V, ICC = 3A
100.00
95.00
90.00
85.00
80.00
75.00
100.00
95.00
90.00
85.00
80.00
75.00
70.00
0
1
2
3
4
3
3.3
3.6
3.9
4.2
4.5
IBATT (A)
VBATT (V)
Boost Efficiency
ROLIM = 0
ICC vs. RISET @ VIN = 5V
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
100.00
95.00
90.00
85.00
80.00
75.00
70.00
VBATT=3V
VBATT=3.7V
VBATT=4.2V
30
70 110 150 190 230 270 310
0
1
2
3
RISET (kΩ)
ISYS (A)
Programmable Output Current Limit,
Boost Mode
VBATT = 3.7V
ILIMIT vs. RILIMIT @ VIN = 5V
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
3.00
2.50
2.00
1.50
1.00
0.50
0.00
10
30
50
70
90
40
80
120
ROLIM (kΩ)
160
200
RILIMIT (kΩ)
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
11
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 5V, CIN = CBATT = CSYS = C2 = 22µF, L1 = 2.2µH, RS1 = 10mΩ, C4 = CTMR = 0.1µF, battery
simulator, unless otherwise noted.
Ibatt_sleep_mode vs. Temperature
VBATT = 4.2V
VIN_OVP_R vs. Temperature
VBATT = 4.2V
50
40
30
20
10
0
6.2
6.1
6
5.9
5.8
5.7
5.6
5.5
-50
0
50
100
-50
0
50
100
TEMPERATURE (°C)
TEMPERATURE (°C)
SYS_OVP_R vs. Temperature
VBATT = 4.2V
VBATT_VBL vs. Temperature
VBATT = 4.35V
4.4
4.38
4.36
4.34
4.32
4.3
5.95
5.9
5.85
5.8
5.75
5.7
5.65
5.6
4.28
4.26
5.55
5.5
-50
0
50
100
-50
0
50
100
TEMPERATURE (°C)
TEMPERATURE (°C)
VBATT_VBH vs. Temperature
VBATT = 4.45V
VBATT_VBNC vs. Temperature
VBATT = 4.2V
4.56
4.24
4.22
4.2
4.52
4.48
4.44
4.4
4.18
4.16
4.14
4.12
4.1
4.36
4.32
4.28
-50
0
50
100
-50
0
50
100
TEMPERATURE (°C)
TEMPERATURE (°C)
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
12
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 5V, CIN = CBATT = CSYS = C2 = 22µF, L1 = 2.2µH, RS1 = 10mΩ, C4 = CTMR = 0.1µF, battery
simulator, unless otherwise noted.
BATTOVP_VBL_R_% vs. Temperature
BATTOVP_VBH_% vs. Temperature
105.0
105.0
104.0
103.0
102.0
101.0
100.0
104.0
103.0
102.0
101.0
-50
0
50
100
-50
0
50
100
TEMPERATURE (°C)
TEMPERATURE (°C)
BATTOVP_VBNC_% vs. Temperature
IOLIM_60.4kΩ vs. Temperature
ROLIM = 60.4kΩ
2680.0
105
2600.0
2520.0
2440.0
2360.0
2280.0
2200.0
104
103
102
101
-50
0
50
100
-50
0
50
100
Temperature (°C)
TEMPERATURE (°C)
ICC_75kΩ vs. Temperature
RISET = 75kΩ
2050.0
2010.0
1970.0
1930.0
1890.0
1850.0
-50
0
50
100
TEMPERATURE (°C)
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
13
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 5V, CIN = CBATT = CSYS = C2 = 22µF, L1 = 2.2µH, RS1 = 10mΩ, C4 = CTMR = 0.1µF, battery
simulator, unless otherwise noted.
Battery Charge Curve
VBATT_REG = 4.2V, ISYS = 0A, ICC = 3.0A
Auto-Recharge
VBATT_REG = 4.2V, ISYS = 0A, ICC = 3.0A
CH1: VIN
1V/div.
CH2: VBATT
1V/div.
CH1: VIN
1V/div.
CH3: VSW
5V/div.
CH3: VSW
5V/div.
CH4: IBATT
1A/div.
CH2: VBATT
1V/div.
CH4: IBATT
1A/div.
4s/div.
2s/div.
FG Indication during Charging
VBATT_REG = 4.2V, ISYS = 0A, ICC = 3.0A
BATT Float Steady State
VBATT_REG = 4.2V, ISYS = 0A
CH1: VIN
1V/div.
CH2: VBATT
1V/div.
CH2: VBATT
2V/div.
CH1: LED1
5V/div.
CH3: VSW
1V/div.
CH2: LED2
5V/div.
CH3: LED3
5V/div.
CH4: IL
100mA/div.
CH4: LED4
5A/div.
2s/div.
40ms/div.
TC Charge Steady State
VBATT_REG = 4.2V, ISYS = 0A, VBATT = 2.6V
CC Charge Steady State
VBATT_REG = 4.2V, ISYS = 0A, VBATT = 3.7V
CH1: VIN
1V/div.
CH1: VIN
1V/div.
CH2: VBATT
1V/div.
CH2: VBATT
3V/div.
CH4: IL
500mA/div.
CH3: VSW
5V/div.
CH4: IL
1A/div.
CH3: VSW
5V/div.
1µs/div.
1µs/div.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
14
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 5V, CIN = CBATT = CSYS = C2 = 22µF, L1 = 2.2µH, RS1 = 10mΩ, C4 = CTMR = 0.1µF, battery
simulator, unless otherwise noted.
CV Charge Steady State
VBATT_REG = 4.2V, ISYS = 0A, VBATT = 4.2V
Power On, Charge Mode
VBATT_REG = 4.2V, ISYS = 0A, VBATT = 3.7V
CH1: VIN
1V/div.
CH2: VBATT
1V/div.
CH2: VBATT
1V/div.
CH1: VIN
2V/div
CH3: VSW
5V/div.
CH4: IL
500mA/div.
CH4: IL
1A/div.
CH3: VSW
5V/div.
1µs/div.
40ms/div.
Power Off, Charge Mode
VBATT_REG = 4.2V, ISYS = 0A, VBATT = 3.7V
Input Current Limit
VBATT_REG = 4.2V, VBATT = 3.7V, RILIM = 14.7kΩ
CH1: VIN
2V/div
CH1: VIN
1V/div
CH2: VBATT
1V/div.
CH2: IIN
2V/div.
CH3: VSW
5V/div.
CH3: ISYS
2V/div.
CH4: IL
1A/div.
CH4: IBATT
2A/div.
4ms/div.
10s/div.
Input Voltage Regulation
VBATT_REG = 4.2V, VBATT = 3.7V, VIN_REG = 4.65V
Input Over-Voltage Protection
VIN = 5 - 6V, VBATT = 3.7V
CH1: VIN
1V/div
CH2: VBATT
1V/div.
CH1: VIN
500mV/div
CH3: ISYS
CH2: VBATT
2V/div.
500mA/div.
CH4: IBATT
1A/div.
CH3: VSW
5V/div.
CH4: IBATT
2A/div.
4s/div.
4s/div.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
15
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 5V, CIN = CBATT = CSYS = C2 = 22µF, L1 = 2.2µH, RS1 = 10mΩ, C4 = CTMR = 0.1µF, battery
simulator, unless otherwise noted.
Input Over-Current Protection
VIN = 5V, ramp up ISYS to 4.2A, VBATT = 3.7V
NTC Protection, Charge Mode
VIN = 5V, VBATT = 2.6V
CH1: VIN
1V/div
CH2: LED4
5V/div.
CH2: VSYS
5V/div.
CH3: LED1
5V/div.
CH3: VSW
5V/div.
CH1: VNTC
1V/div
CH4: IIN
2A/div.
CH4: IBATT
200mA/div.
1s/div.
2s/div.
Timer Out Protection, Charge Mode
VIN = 5V, VBATT = 3.7V, CTMR = 150pF
Input Adapter Insertion @ No Load
Connection
VBATT = 3.7V, RILIMT = 14.7kΩ, RISET = 49.9kΩ
CH1: VTMR
1V/div
CH1: VIN
2V/div
CH2: VBATT
1V/div.
CH2: DM1
1V/div.
CH3: VSW
5V/div.
CH3: DP1
1V/div.
CH4: IBATT
1A/div.
CH4: IBATT
2A/div.
40µs/div.
20ms/div.
Input Adapter Insertion @ Phone
Phone Connected @ Charging from
Connected
VBATT = 3.7V, RILIMT = 14.7kΩ, RISET = 49.9kΩ
Adapter
VBATT = 3.7V, RILIMT = 14.7kΩ, RISET = 49.9kΩ
CH1: VIN
2V/div
CH1: VIN
2V/div
CH2: VBATT
2V/div.
CH2: DM1
500mV/div.
CH3: VSYS
2V/div.
CH3: DP1
CH4: IBATT
500mA/div.
500mV/div.
CH4: IBATT
1A/div.
4ms/div.
4ms/div.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
16
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 5V, CIN = CBATT = CSYS = C2 = 22µF, L1 = 2.2µH, RS1 = 10mΩ, C4 = CTMR = 0.1µF, battery
simulator, unless otherwise noted.
USB Insertion @ No Load Connection
VBATT = 3.7V, RILIMT = 14.7kΩ, RISET = 49.9kΩ
USB Insertion @ Phone Connection
VBATT = 3.7V, RILIMT = 14.7kΩ, RISET = 49.9kΩ
CH1: VIN
2V/div
CH1: VIN
2V/div
CH2: DM1
1V/div.
CH2: DM1
500mV/div.
CH3: DP1
1V/div.
CH3: DP1
1V/div.
CH4: IBATT
CH4: IBATT
500mA/div.
500mA/div.
20ms/div.
20ms/div.
Phone Connected @ Charging from
Phone Removed @ Charging from
USB
Adapter
VBATT = 3.7V, RILIMT = 14.7kΩ, RISET = 49.9kΩ
VBATT = 3.7V, RILIMT = 14.7kΩ, RISET = 49.9kΩ
CH1: VIN
2V/div
CH1: VIN
2V/div
CH2: VBATT
2V/div.
CH2: VBATT
2V/div.
CH3: VSYS
2V/div.
CH4: IBATT
500mA/div..
CH3: VSYS
2V/div.
CH4: IBATT
500mA/div.
.
100ms/div.
100ms/div.
Phone Removed @ Charging from
Input Adapter Removal @ Phone
USB
Connected
VBATT = 3.7V, RILIMT = 14.7kΩ, RISET = 49.9kΩ
IOUT = 3 - 6A, slew rate = 2.5A/µs by E-load
CH1: VIN
2V/div
CH1: VIN
2V/div
CH2: VBATT
2V/div.
CH2: DM1
500mV/div.
CH3: DP1
CH3: VSYS
2V/div.
500mV/div.
CH4: IBATT
500mA/div.
CH4: IBATT
1A/div.
100ms/div.
40ms/div.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
17
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 5V, CIN = CBATT = CSYS = C2 = 22µF, L1 = 2.2µH, RS1 = 10mΩ, C4 = CTMR = 0.1µF, battery
simulator, unless otherwise noted.
USB Removal @ Phone Connection
VBATT = 3.7V, RILIMT = 14.7kΩ, RISET = 49.9kΩ
USB Removal @ No Load
Connection
VBATT = 3.7V, RILIMT = 14.7kΩ, RISET = 49.9kΩ
CH1: VIN
2V/div
CH1: VIN
2V/div
CH2: DM1
500mV/div.
CH2: DM1
1V/div.
CH3: DP1
500mV/div.
CH3: DP1
1V/div.
CH4: IBATT
1A/div.
CH4: IBATT
500mA/div.
40ms/div.
100ms/div.
Boost Mode Steady State
VBATT = 3.7V, ISYS = 3A
Power On by PB, Boost Mode
VBATT = 3.7V, ISYS = 0A
CH1: VBATT
2V/div
CH1: VBATT
2V/div
CH2: VSYS
1V/div.
CH3: Vsys
2V/div.
CH4: IL
CH2: VPB
2V/div.
500mA/div.
CH4: IL
1A/div.
CH3: VSW
1V/div.
20µs/div.
200ms/div.
Power Off by PB, Boost Mode
VBATT = 3.7V, ISYS = 0A
Load Transient
VBATT = 4.2V, ISYS = 0.5 - 2.5A
CH1: VBATT
1V/div
CH1: VBATT
2V/div
CH3: Vsys
CH2: VPB
2V/div.
500mV/div.
CH3: Vsys
2V/div.
CH2: VSW
5V/div.
CH4: ISYS
2A/div.
CH4: IL
1A/div.
1 s/div.
400µs/div.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
18
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 5V, CIN = CBATT = CSYS = C2 = 22µF, L1 = 2.2µH, RS1 = 10mΩ, C4 = CTMR = 0.1µF, battery
simulator, unless otherwise noted.
Power On by PB, Boost Mode
VBATT = 3.7V, ISYS = 3A
Power Off by PB, Boost Mode
VBATT = 3.7V, ISYS = 3A
CH1: VBATT
2V/div
CH1: VBATT
2V/div
CH3: Vsys
2V/div.
CH2: VPB
2V/div.
CH3: Vsys
2V/div.
CH2: VPB
2V/div.
CH4: IL
5A/div
CH4: IL
5A/div.
200ms/div.
1s/div.
SYS Output Current Limit, Boost
Light Load Off @ Torch Off
VBATT = 3.3V, IBATT = 65mA
Mode
VBATT = 3.7V, ROLIM = 60.4kΩ
CH1: VBATT
2V/div
CH1: VBATT
2V/div
CH2: VFB
1V/div.
CH2: VSYS
2V/div.
CH3: Vsys
5V/div.
CH4: IBATT
50mA/div
CH4: IL
1A/div
4s/div.
4s/div.
SYS Short-Circuit Entry
VBATT = 3.7V, ISYS = 3A
SYS Short Steady
VBATT = 3.7V, ISYS = 3A
CH1: VBATT
2V/div
CH1: VBATT
2V/div
CH3: Vsys
2V/div.
CH3: Vsys
2V/div.
CH2: VFB
5V/div.
CH2: VFB
5V/div.
CH4: IL
2A/div
CH4: IL
2A/div
2ms/div.
1ms/div.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
19
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 5V, CIN = CBATT = CSYS = C2 = 22µF, L1 = 2.2µH, RS1 = 10mΩ, C4 = CTMR = 0.1µF, battery
simulator, unless otherwise noted.
SYS Short-Circuit Recovery
VBATT = 3.7V, ISYS = 3A
LED Indication during Discharging
VBATT ramping down, ISYS = 3A
VBATT
CH1: VBATT
2V/div
2V/div
CH2: VSW
5V/div.
CH1: LED1
5V/div
CH2: LED2
5V/div.
CH3: Vsys
2V/div.
CH3: LED3
5V/div.
CH4: IL
2A/div
CH4: LED4
5A/div
2ms/div.
2s/div.
Torch Light
VBATT = 4.2V
Input/Output Ripple
IOUT = 6A
CH1: VBATT
2V/div
CH3: VSYS
2V/div.
CH2: VSYS
2V/div.
CH1: VPB
2V/div
CH3: VPB
2V/div.
CH2: VTC
2V/div.
CH4: ISYS
50mA/div
CH4: VTC
2A/div
400ms/div.
4s/div.
Boost Automatic On @ Phone
Insertion w/ BATT = 3.8V
VBATT = 3.8V, insert phone @ USB2
NTC Protection, Boost Mode
VBATT = 3.7V, ISYS = 1A
CH1: VSYS
2V/div
CH1: NTC
2V/div
CH2: VSYS
2V/div.
CH2: VSW
5V/div.
CH3: PB
2V/div.
CH3: VSYS
5V/div.
CH4: ISYS
500mA/div
CH4: ISYS
2A/div
1s/div.
200ms/div.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
20
MP2632B – ALL-IN-ONE, 3A, SW CHARGER, 3A BOOST
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 5V, CIN = CBATT = CSYS = C2 = 22µF, L1 = 2.2µH, RS1 = 10mΩ, C4 = CTMR = 0.1µF, battery
simulator, unless otherwise noted.
BATT_UVLO Latch @ BATT = 3V
Power Off by Battery Removal,
Boost Mode
VBATT = 3.7V, ISYS = 0A
CH2: VSYS
2V/div.
CH1: VBATT
1V/div
CH1: VBATT
100mV/div
CH3: VPB
2V/div.
CH3: VSYS
2V/div.
CH2: VSW
2V/div.
CH4: IBATT
1A/div
CH4: IL
1A/div
10s/div.
100ms/div.
Auto-Restart after SYS OCP, Boost
Mode
VBATT = 3.3V, ROLIM = 100kΩ
Light Load Off Test
VBATT = 4.5V, IBATT = 55mA
CH1: VBATT
1V/div
CH1: VBATT
2V/div
CH2: VSW
2V/div.
CH2: VSYS
2V/div.
CH3: VSYS
2V/div.
CH4: IL
500mA/div
CH4: IL
1A/div
20ms/div.
4s/div.
Power Off by Battery Removal,
Boost Mode
VBATT = 3.7V, ISYS = 2.5A
CH1: VBATT
1V/div
CH3: VSYS
2V/div.
CH2: VSW
5V/div.
CH4: IL
2A/div
100ms/div.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
21
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
BLOCK DIAGRAM
SYS
DM2
DP2
Output
Signaling
SW
VIN
Q1
Q2
Q3
DM1
VCC
A1
DP/DM
Detection
LSMOS
Driver
DP1
IIN_FB
VCC
LSMOS
Driver
Charge
Pump
Q4
IIN_LMT
ILIM
Input Current
Limit Setting
PWM
Controller
VNTC
Sleep Mode
CSP
VCC
VCC
Current Sense
K1*ICC
VIN
Buffer
VBATT_REG
VBATT_FB
BATT
GMV
GMI
VBATT
ICC
VSYS
K1*ICC
VBATT_FB
PGND
Control Logic
&
Mode Selection
VIN
IIN_LMT
UV
OV
GMINI
GMINV
IIN_FB
AGND
LED1
VIN_FB
VIN_LMT
VSYS
VBATT
300mV
+
TRef
LED2
LED3
LED4
GMT
TJ
Boost Enable
Junction
Temp Sense
Torch Control
PB
Thermal
Protection
FG
Indication
VCC
H/L/Floating
VB
VBATT_REG
VNTC
Charge
Parameter
Setting
ISET
ICC
Battery Temp
Protection
Boost Output
Current Limit
Setting
OLIM
Timer Fault
VBATT
TMR
TIMER
Function
NTC
VTNC
Figure 1: Functional Block Diagram in Charge Mode
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
22
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
BLOCK DIAGRAM (continued)
SYS
DM2
DP2
Output
Signaling
IOUT_FB
SW
VIN
Q1
Q2
Q3
DM1
VCC
A1
DP/DM
Detection
LSMOS
Driver
DP1
VCC
LSMOS
Driver
Charge
Pump
Q4
IIN_LMT
ILIM
Input Current
Limit Setting
PWM
Controller
VNTC
Sleep Mode
CSP
VCC
VCC
Current Sense
K1*ICC
VSYS_FB
VSYS_REG
IOLIM
VIN
Buffer
BATT
GMV
GMI
VBATT
VSYS
IOUT_FB
VBATT_FB
PGND
Control Logic
&
Mode Selection
VIN
UV
OV
AGND
LED1
VSYS
VBATT
300mV
+
TRef
LED2
LED3
LED4
GMT
TJ
Boost Enable
Junction
Temp Sense
Torch Control
PB
Thermal
Protection
FG
Indication
VCC
H/L/Floating
VB
VBATT_REG
VNTC
Charge
Parameter
Setting
ISET
ICC
Battery Temp
Protection
Boost Output
Current Limit
Setting
OLIM
Timer Fault
VBATT
TMR
TIMER
Function
NTC
VTNC
Figure 2: Functional Block Diagram in Boost Mode
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
23
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
OPERATION FLOW CHART
POR
No
VCC >VCC_ UVLO
?
Yes
4.65V <VIN <6.0 V?
No
Input OVP
Fault
Yes
V
IN
>6.0 V?
No
Yes
SYS is Powered by VIN
No
No
No
Short Low Pulse at PB?
USB Detection
Done?
Yes
VBATT>2.9V ?
Yes
Yes
Input Current
Limit is Configured
Yes
Boost Mode
No
Any Charge Fault?
No Load is
Detected
No
Yes
No
Charge Mode
No Load Timer
Expires?
Yes
Sleep Mode
Figure 3: Mode Selection Flow Chart
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
24
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
OPERATION FLOW CHART (continued)
Normal Operation
Charge Mode
Charge Mode?
VBATT = VBATT_REG
VBATT < VBATT_TC
VBATT_TC < VBATT < VBATT_REG
C.V.C
C.C.C
T.C.C
No
No
No
IBATT<ITERM
Battery Full
VBATT = VBATT_REG
?
VBATT > VBATT_TC
Yes
?
Yes
Yes
Charger “Off”
Yes
No
VBATT < VRECH
?
No
No
No
Timer Out ?
Yes
NTC Fault?
Yes
TJ ≥120oC?
Yes
Charge
Termination
Decrease ICHG to
Maintain TJ at 120oC
Charge Suspend
No
No
No
Reset
Timer?
NTC OK?
Yes
TJ ≥150oC?
Yes
Yes
Charge Recovery,
Return to Normal
Operation
Thermal Shutdown
No
TJ ≤120oC?
Yes
Fault Protection
Figure 4: Normal Operation and Fault Protection in Charge Mode
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
25
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
OPERATION FLOW CHART (continued)
Power Path Management
SYS Output
Current Increase
VIN touch the VIN_R
?
IIN > IIN_LIMIT?
No
No
Yes
Yes
Reduce the IBATT
IBATT ≤0?
No
Yes
IIN > 7A?
No
YES
Normal Operation
No
IIN > IIN_OCP
?
Yes
Fast Turn Off the
IN-to-SYS MOSFET
Regulate IIN at IIN_OCP
NO
TINOCBLK , 200μs
reaches?
YES
After One-Shot Delay
Turn Off IN-to-SYS
MOSFET
No
150ms Timer
Expires?
Yes
Softly Turn On the
IN-to-SYS MOSFET
Figure 5: Power-Path Management in Charge Mode
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
26
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
OPERATION FLOW CHART (continued)
BATT POR
Normal Boost
Operation
No
VBATT>3.2V?
Yes
No
No
No
VSYS<4V?
Yes
Yes
Yes
No
Yes
IL>3.5A?
Boost Enabled?
Yes
VSYS<VBATT+100mV?
Yes
Normal Boost
Operation
No
ISYS >IOLIM
Yes
No
No
Boost Shutdown
Start 1ms Timer
120μs
Blanking
Time Pass?
?
Yes
VBATT<2.9V?
Yes
No
Output Current Loop
1ms Timer
Expires?
Keeps ISYS=IOLMT
,
Boost Latch off
V
SYS Decreases
Figure 6: Operation Flow Chart in Boost Mode
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
27
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
START-UP TIME FLOW IN CHARGE MODE
Condition: VIN = 5V, VBATT = 3.8V
VIN
VCC
VIN > VBATT+ 300mV
Auto-recharge threshold
VBATT
2V
VSYS
0V
Band Gap
VINOK
CHG EN
REF SS
200μs
ICC
IBATT
ITERM
1ms
Charge Full
Figure 7: Input Power Start-Up Time Flow in Charge Mode
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
28
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
START-UP TIME FLOW IN BOOST MODE
Condition: VIN = 0V, VBATT = 3.8V
VSYS
VSYS >VCC + 150 mV
VCC
VBATT
0V
1.5ms
Band Gap
Boost EN
1.2ms
REF SS
IBATT
75mA
75mA
No Load Off
Control
16s
Figure 8: Boost Start-Up Time Flow in Boost Mode
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
29
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
switching mode charging solution, resulting in
charging that is faster than a traditional linear
solution.
OPERATION
The MP2632B is a highly integrated, flexible,
switch-mode battery charger with system
power-path management designed for single-
cell Li-ion or Li-polymer batteries for use in a
wide range of applications. Depending on the
status of the input, the MP2632B can operate in
three different modes: charge mode, boost
mode, and sleep mode.
In charge mode, the MP2632B can work with a
single-cell Li-ion or Li-polymer battery. In boost
mode, the MP2632B boosts the battery voltage
to VSYS_SET to power higher voltage system rails.
In sleep mode, both charging and boost
operations are disabled, and the device enters
power-save mode to help reduce overall power
consumption. The MP2632B monitors VIN to
provide smooth transitions between different
modes of operation.
VCC Power Supply
The MP2632B has an external VCC power
supply. VCC is powered by the highest voltage
level out of VSYS, VBATT, and VIN - 0.7V. An
external capacitor is required to bypass VCC to
GND. When VCC is higher than 2.2V, the
internal control circuit is activated.
Figure 9: Typical Battery Charge Profile
Auto-Recharge
Once the battery charge cycle is completed, the
charger remains off. During this time, the
system load may consume battery power, or
the battery may self-discharge. To ensure that
the battery does deplete, a new charge cycle
begins automatically when the battery voltage
falls below the auto-recharge threshold and the
input power is present. The timer resets when
the auto-recharge cycle begins.
CHARGE MODE OPERATION
Charge Cycle (Trickle Charge CC Charge
CV Charge)
In charge mode, the MP2632B has five control
loops to regulate the input current, input voltage,
charge current, charge voltage, and device
junction temperature. The MP2632B charges
the battery in three phases: trickle current (TC),
constant current (CC), and constant voltage
(CV).
During the off-state, after the battery is fully
charged, if the input power restarts, the charge
cycle begins and the timer resets, regardless of
the battery voltage.
When charge operation is enabled, all five
loops are active, but only one dominates the IC
behavior. A typical battery charge profile is
shown in Figure 9a. The charger remains in TC
charge mode until the battery voltage reaches
the TC-to-CC threshold. Otherwise, the charger
enters CC charge mode. When the battery
voltage rises to the CV mode threshold, the
charger operates in constant-voltage mode.
Figure 9b shows a typical charge profile when
the input current limit loop dominates during CC
charge mode. In this case, the charger
maximizes the charging current due to the
Charge Current Setting
The external sense resistors (RS1 and RISET
program the battery charge current (ICC).
)
Select RISET based on RS1 with Equation (1):
1500
(1)
ICC(A)
RISET(k)RS1(m)
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
30
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
Battery Over-Voltage Protection (OVP)
VNTC Power Supply
The MP2632B has battery over-voltage
protection (OVP). If the battery voltage exceeds
the battery over-voltage threshold (103.5% of
the battery regulation voltage), charging is
disabled. Under this condition, an internal 5kΩ
dummy load draws a current from BATT to
decrease the battery voltage and protect the
battery.
The MP2632B has NTC protection in both
boost mode and charge mode. To enable NTC
protection in both boost mode and charge mode
and to minimize the battery leakage current in
sleep mode, the MP2632B uses a dedicated
power supply pin for the pull-up voltage for the
NTC protection function block (VNTC). In boost
mode and charge mode, VNTC is connected to
VCC by a switch internally. In sleep mode,
VNTC is disconnected from VCC to minimize
the battery leakage current (see Figure 10).
Timer Operation in Charge Mode
The MP2632B uses an internal timer to
terminate the charging. The timer remains
active during the charging process. An external
capacitor between TMR and GND programs the
charge cycle duration.
VNTC
NTC
VCC
If charging remains in TC mode beyond the
trickle-charge time (τTRICKLE_TMR), charging is
terminated. For the MP2632B, the charge
current in TC mode is fixed at 265mA, and the
sense resistor (RS1) is set to 10mΩ. The length
of the trickle-charge period can be determined
with Equation (2):
Sleep mode
Charge
Control
CTMR (F)
0.1F
TRICKLE_ TMR 17mins
(2)
The total charge time can be calculated with
Equation (3):
Figure 10: NTC Protection Block
CTMR(F)
0.1F
1A
TOTAL_TMR 7.55Hours
(3)
Input DP1/DM1 USB Detection and Input
Current Limit
ICHG(A) 0.1
Portable devices (PDs) are able to draw current
from the USB ports in personal computers to
charge their batteries. If the portable device is
attached to a USB host of the hub, then the
USB specification requires the portable device
to draw a limited current (usually 500mA).
When the device is attached to a charging port,
it is allowed to draw more than 1.5A.
Negative Temperature Coefficient (NTC)
Input for Battery Temperature Monitoring
The MP2632B has a built-in NTC resistance
window comparator that allows the MP2632B to
monitor the battery temperature via the battery-
integrated thermistor during both charge and
boost modes. Connect an appropriate resistor
from VNTC to the NTC pin and connect the
thermistor from the NTC pin to GND. The
resistor divider determines the NTC voltage
depending on the battery temperature. If the
NTC voltage falls outside of the NTC window,
the MP2632B stops charging. The charger
restarts if the temperature enters the NTC
window range again. Please refer to the
Application Information section on page 38 for
selecting an appropriate resistor.
The MP2632B features input source detection
to determine the input current limit according to
the input source (USB or adapter) (see Figure
11).
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
31
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
During primary detection, the PD turns on
VDP_SRC on DP1 and IDM_SINK on DM1. If the
portable device is attached to a USB host, DM1
is low. If the power device is attached to CDP,
DCP, or another dedicated charging port, DM1
remains high.
DP1
VDP_SRC
VLGC_HI
IDP_SRC
CHG_DET
VDAT_RE
To be compatible with different capacities of the
input source, set the input current limit
according to the values listed in Table 2.
F
IDM_SINK
Table 2: Input Current Limit Setting
DP1/DM1 Detection
Floating
IIN_LMT
500mA
DM1
SDP
500mA
CDP or DCP
Set through RILIM
RDM_DWN
USB detection runs once VIN is detected and is
independent of the charge enable status. After
the DP1/DM1 detection is done, the MP2632B
sets the input current limit as shown in Table 2.
Figure 11: USB Port Detection
The MP2632B starts DP1/DM1 detection when
the input source plugs in. DP1/DM1 detection
has two steps: data contact detection (DCD)
and primary detection.
When the detection algorithm is completed,
DP1 and DM1 enter Hi-Z with approximately
4pF of capacitive load.
External Input Current Limit Setting
DCD detection uses a current source to detect
when the data pins have made contact during
an attach event. The protocol for data contact
detection is as follows:
The MP2632B has a dedicated pin (ILIM) used
to program the input current limit when CDP or
DCP is detected. The current at ILIM is a
fraction of the input current. The ILIM voltage
indicates the average input current of the
switching regulator as determined by the
resistor value between ILIM and GND. As the
input current approaches the programmed input
current limit, the charge current is reduced to
give priority to the system power. Determine the
input current-limit threshold with Equation (4):
The power device (PD) detects if VIN is
asserted.
The PD turns on DP1 IDP_SRC and the DM1
pull-down resistor for 40ms.
The PD waits for DP1 to be low.
The PD turns off IDP_SRC and the DM1 pull-
down resistor when DP1 is detected to be
low or when the 40ms timer expires.
40(k)
I
(A)
(4)
ILIM
RILIM(k)
DCD allows the PD to begin primary detection
once the data pins have made contact. Once
the data contact is detected, the MP2632B
jumps to the primary detection immediately. If
the data contact is not detected, the MP2632B
jumps to the primary detection automatically
after 300ms from the beginning of the DCD.
Input Voltage Regulation in Charge Mode
In charge mode, if the input power source is not
sufficient enough to support both the charge
current and the system load current, the input
voltage decreases. As the input voltage
approaches the 4.65V input voltage regulation
threshold preset internally, the charge current is
reduced to give priority to the system power
and maintain proper regulation of the input
voltage.
Primary detection is used to distinguish
between the USB host (or SDP) and different
types of charging ports.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
32
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
Integrated Over-Current Protection (OCP)
and Over-Voltage Protection (OVP) for Pass-
Through Path
TC threshold. The switching frequency also
decreases when the BATT voltage drops to
40% of the battery regulation voltage.
The MP2632B has an integrated VIN-to-SYS
pass-through path to allow for direct connection
of the input voltage to the system. Therefore,
The MP2632B monitors both the input current
and input voltage continuously. In the event of
an overload, the charge current is reduced to
ensure priority of the system power
requirements.
Thermal Foldback Function
The MP2632B implements thermal protection to
prevent thermal damage to the IC and the
surrounding components. An internal thermal
sense and feedback loop decrease the
programmed charge current automatically when
the die temperature reaches 120°C. This
function is called charge-current thermal
foldback. This function protects the device from
thermal damage and can also set the charge
current based on requirements rather than
worst-case conditions while ensuring safe
operation. Furthermore, the MP2632B includes
a thermal shutdown protection, where charging
stops if the junction temperature rises to 150°C.
Additionally, the MP2632B also features input
over-current protection (OCP) and over-voltage
protection (OVP) for the VIN-to-SYS pass-
through path.
Input Over-Current Protection (OCP)
If the total input current exceeds 5A, Q2 is
controlled linearly to regulate the current (see
Figure 12). If the current continues to exceed
5A after 200μs of blanking time, Q2 is turned off.
If the input current exceeds 7A, Q2 is turned off
almost instantaneously and without any
blanking time. This is done to protect both Q1
and Q2.
Non-Sync Operation Mode
During charging mode, the MP2632B monitors
the total input current flowing from VIN to SYS
continuously. When the input current is lower
than 170mA, the low-side switch operates as a
non-synchronous MOSFET.
Input Over-Voltage Protection (OVP)
Constant-Off-Time Control for Large Duty
Charging Operation
The MP2632B has a built-in over-voltage
threshold (VIN_OVP). When the input voltage is
higher than VIN_OVP, an invalid input power
source is detected by the MP2632B. At this
time, the VIN-to-SYS pass-through path is
disabled.
The MP2632B has a built-in 600kHz frequency
oscillator for the switching frequency. Unlike a
fixed frequency in traditional peak-current
control, the MP2632B features a constant-off-
time control to support the constant-current
charge, even when the input voltage is very
close to the battery voltage. The MP2632B
compares the high-side MOSFET sense current
with comp level continuously (see Figure 13). If
the sense current does not reach the comp
level within the original switching period, the
next clock is delayed until the sense current
reaches the comp level. As a result, the duty
cycle can be extended as long as possible.
SYS
Q1
Q2
IN
Charge
Pump
Figure 12: Integrated Pass-Through Path
Battery-Short Protection
Indication for Fault Flag in Charge Mode
The MP2632B is designed with distinct
indication separating the charging fault from the
normal operation. The charging fault includes
INOVP, BOVP, and NTC fault, the four LED
pins blink with 1Hz of frequency simultaneously
(see Table 3).
In charge mode, the MP2632B has two current-
limit thresholds. CC and CV modes have a
peak-current-limit threshold of 7A, while TC
mode has a current-limit threshold of 4A.
Therefore, the current-limit threshold decreases
to 4A when the battery voltage drops below the
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
33
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
Table 3: Indication at Charge Mode
Operation Status
LED1 to LED4 State
Depending on the battery voltage, LEDx blinks at 1Hz,
(refer to Fuel Gauge Indication section on page 36)
LED1 to LED4 are all turned on
Normal charging
Charge full
VIN UVLO
LED1 to LED4 are all turned off
VIN OVP, NTC fault, battery OVP
LED1 to LED4 are all blinking at 1Hz
Comp
Slope Compensation
HS Sense Current
HS Signal
Constant Off Time
600kH
z
Lower the Fsw to support larger Duty
Figure 13: Constant-Off Time Operation Profile
Board layout is extremely critical for minimizing
BOOST MODE OPERATION
Low-Voltage Start-Up
voltage overshoot at SW due to stray
inductance. Keep the output filter capacitor as
close as possible to SYS and use very low
ESR/ESL ceramic capacitors tied to a good
ground plane.
The minimum battery voltage required to start
up the circuit in boost mode is 3.2V. Initially,
when VSYS is less than VBATT, the MP2632B
works in down mode. In down mode, the
synchronous P-channel MOSFET (P-FET)
stops switching, and its gate connects to VBATT
statically. The P-FET remains off for as long as
the voltage across the parasitic CDS (VSW) is
lower than VBATT. When the voltage across CDS
exceeds VBATT, the synchronous P-FET enters
linear mode, allowing the inductor current to
decrease and flow into SYS. Once VSYS
exceeds VBATT, the P-FET gate is released, and
normal, closed-loop, pulse-width modulation
(PWM) operation is initiated. In boost mode, the
battery voltage can drop to as low as 2.9V
without affecting circuit operation.
Boost Output Voltage Setting
In boost mode, the MP2632B programs the
output voltage internally according to the load
connected to SYS (5.1V or 5.2V) and provides
built-in output OVP to protect the device and
other components against damage when VSYS
goes beyond 6V. Once output over-voltage
occurs, the MP2632B turns off the boost
converter. When the voltage on VSYS drops to a
normal level, the boost converter restarts again
when PB is set from high to low for more than
1.5ms.
Boost Output Current Limiting
SYS Disconnect and Inrush Limiting
The MP2632B integrates a programmable
output current limit function in boost mode. If
the boost output current exceeds this
programmable limit, the output current is limited
at this level. OLIM programs the current limit
threshold up to 3.0A as shown in Equation (5):
The MP2632B implements true output
disconnect
by eliminating
body diode
conduction of the internal P-FET rectifier. VSYS
can drop to 0V during shutdown, drawing no
current from the input source. The MP2632B
also allows for inrush current limiting at start-up,
minimizing surge currents from the input supply.
To optimize the benefits of the output
disconnect, avoid connecting an external
Schottky diode between SW and SYS.
1500
IOLIM(A)
(5)
ROLIM(k)RS1(m)
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
34
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
The MP2632B can operate in CC mode when
the current limit is reached, and VIN does not
Thermal Shutdown Protection
The thermal shutdown protection is also active
in boost mode. Once the junction temperature
rises higher than 150°C, the MP2632B enters
thermal shutdown. The MP2632B does not
resume normal operation until the junction
temperature drops below 120°C.
drop to the down mode threshold (VBATT
100mV) (see Figure 14).
+
VSYS
VSYS_REG
Automatic Off at Light Load
The boost turns off automatically if the load
current at BATT is below the typical 75mA
value for 16 seconds.
VBATT+100mV
SCP
ISYS
The MP2632B also features a long-push action
on PB to shut down the boost manually. A low
push on PB longer than 2.5 seconds is defined
as a long push (see Figure 15 for PB action).
IOLIM
Figure 14: Boost Output U-I Curve
The MP2632B not only has CC mode during
the charging process, but also has CC mode
operation in boost mode for various applications.
Automatic Output DP2/DM2 Signaling
The MP2632B sets the DP2/DM2 signal based
on the load applied on USB2 in boost mode. In
pass-through mode, DP2 and DM2 are set
according to DP1 and DM1 detection results.
SYS to BATT Block Protection
When there is no VIN and boost mode is not on,
the MP2632B is in sleep mode. The high-side
switch implements the body switch function,
which connects the body diode of the switch to
the high-voltage side of SW and SYS, which
blocks the external voltage on SYS from
flooding into the battery.
In boost mode, DM2/DP2 are set based on
three types of signals: DM2/DP2 separately
biased with a 2.7V voltage signal (default),
DM2/DP2 shorted, and DM2/DP2 shorted with
a 1.2V bias.
SYS Output Over-Current Protection (OCP)
In pass-through mode, DM2/DP2 are connected
together if the dedicated charger ports are
detected and pulled down to ground separately
with a 15kΩ resistor if SDP is identified.
The MP2632B integrates a three-phase output
OCP.
1. Phase one (boost mode output current limit):
When the output current exceeds the
programmed output current limit, the output
constant current loop controls the output
current, the output current remains at its
limit of IOLIM, and VSYS decreases.
Torch Control
If the internal torch drive MOSFET is off when
PB is pulled from high to low for more than
1.5ms twice within one second, the drive
MOSFET is turned on. Conversely, if the torch
drive MOSFET is on, the drive MOSFET is
turned off.
2. Phase two (down mode): When VSYS drops
below VBATT + 100mV and the output current
loop remains in control, the boost converter
enters down mode and shuts down after
120μs of blanking time.
In MP2632B, torch light control is independent
from the automatic-off function in light load,
although it consumes battery current in boost
mode. The light-load automatic-off function is
still valid, even if the torch light is on.
3. Phase three (short-circuit mode): When
VSYS drops below 4.0V (2V during boost soft
start), the boost converter shuts down
immediately once the inductor current
reaches the foldback peak-current limit of
the low-side N-channel MOSFET (N-FET).
The boost converter can also recover
automatically after a 1ms deglitch period.
If the torch light is on, the automatic off function
is still valid. If the MP2632B turns off the boost
automatically, the torch light remains on.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
35
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
BATT_UVLO Latch
M3 is used to cut off PB to and from the USB
port when boost is turned on. The PB state is
not affected by the spec of the inserted load of
the USB port. Choose M3 with a low turn-on
threshold (-0.7V is recommended), which can
ensure that it is fully on when the load is
inserted and its on resistance does not cause
too much of a voltage drop.
The MP2632B integrates a BATT_UVLO latch
function in boost mode. When the battery
voltage drops below 2.9V, the MP2632B stops
discharging and enters latch mode. The
MP2632B cannot begin boost discharging even
by pushing PB until the battery voltage is
charged to a given voltage (3.2V) by the input
power.
4-LED Driver for Voltage-Based Fuel Gauge
PB Control
The MP2632B provides 4-LED drivers for a
voltage-based fuel gauge. The driver is
connected to an internal open-drain MOSFET.
The 4-LED indication values are shown in Table
4.
The MP2632B has a push-button input pin (PB)
to control boost mode. Pull PB from high to low
for more than 1.5ms to enable boost mode. Pull
PB from high to low for 2.5s to disable boost
mode.
The LED threshold can be programmed using a
fuse. Each threshold can be adjusted from 150
- 200mV with 50mV steps from their default
value.
Automatic On during SYS Load Insertion
The MP2632B turns on the boost automatically
when PB is pulled from high to low for more
than 1.5ms. If a load is plugged into USB2, the
signal can be sent to PB to begin automatic on
operation.
The LED threshold is also adjusted
automatically based on the VBATT_REG setting.
The VOREG difference is considered to be offset
for the LED thresholds.
To detect the USB load plug-in, an external R-C
network is connected to the shell of a USB
receptacle floating in the PCB. Once the USB
load is inserted, the USB receptacle shell is
grounded through the USB load. A narrow low
pulse (high to low for more than 1.5ms) is
generated at PB and wakes up the boost.
During the voltage measurement, the battery
impedance (50mΩ) should be compensated
based on the battery current to get a precise
battery voltage for fuel gauge indication.
Indication for Fault Flag in Boost Mode
To minimize the power consumption of the
battery, the indication is active once PB is
short-pushed in normal discharge operation,
and turns off after five seconds automatically.
The R-C network can also be connected in the
VIN of the USB receptacle. During load
insertion, the load input capacitor generates a
high-to-low pulse for more than 1.5ms to start
the boost (see Figure 15). The circuit in the
dash frame is the automatic load detection
circuit. M2 is used to decouple the USB port
from the VSYS cap (C2, CSYS), and M1 is used to
drive M2.
Table 4: Indication in Discharge Mode
Operation Status
LED1 to LED4 State
Depending on the battery
voltage, LEDx is turned off
LED1 to LED4 are all
blinking at 1Hz
Normal discharging
NTC fault
Once a phone is plugged in, the voltage at CUSB
is pulled down because the input capacitor
inside the phone is far larger than that in CUSB
,
so the falling edge is delivered to PB to enable
the boost automatically.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
36
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
1.5ms
1.5ms
PB
2.5s
2.5s
TMR
2.5s
2.5s
2.5s
2.5s
Boost EN
Off
t0
On
Off
On
t1
t2
t3
(1st Push)
(2nd Push)
(3rd Push)
(4th Push)
Figure 15: PB Action Profile
Table 5: Indication during Normal Operation
Mode
VBATT
VBATT < 3.6V
[3.6V, 3.8V)
SOC
<25%
[25%, 50%)
[50%, 75%)
LED1
Flash
On
LED2
LED3
Off
Off
LED4
Off
Off
Off
Flash
On
[3.8V, 4.0V)
CV mode, [4.0V, 4.2V),
not terminated
On
Flash
Off
Charging
[75%, 100%)
100%
On
On
On
On
On
On
Flash
On
VBATT ≥ 4.0, terminated
VBATT ≥ 3.92V
>75%
[50%, 75%)
[25%, 50%)
[5%, 25%)
[1%, 5%)
<1%
On
On
On
On
Flash
Off
On
On
On
Off
Off
Off
On
On
Off
Off
Off
Off
On
Off
Off
Off
Off
Off
[3.77V, 3.92V)
[3.62V, 3.77V)
[3.47V, 3.62V)
[VBAT_ULVO, 3.47V)
VBATT < VBAT_UVLO
Discharging
(All off after 5s)
MP2632B Rev. 1.0
www.MonolithicPower.com
37
3/9/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
RT2 //RNTC _ Hot
VSYS RT1 RT2 //RNTC _ Hot
VTH
APPLICATION INFORMATION
Setting the Charge Current in Charge Mode
(9)
TH 35.7%
In charge mode, both the external sense
resistor (RS1) and RISET are connected to ISET
to set the charge current (ICC) of the MP2632B.
Given ICC and RS1, RISET can be calculated with
Equation (6):
Where RNTC_Hot is the value of the NTC resistor
at the upper bound of its operating temperature
range, and RNTC_Cold is its lower bound.
The two resistors RT1 and RT2 determine the
upper
and
lower
temperature
limits
1500
independently. This flexibility allows the
MP2632B to operate with most NTC resistors
for different temperature range requirements.
(6)
ICC(A)
RISET(k)RS1(m)
For example, if ICC = 3.0A and RS1 = 10mΩ (to
optimize the transfer efficiency), then RISET =
49.9kΩ.
Calculate RT1 and RT2 with Equation (10) and
Equation (11):
Table 6 lists the expected RISET values for the
typical charge current with RS1 = 10mΩ.
RNTC_Hot RNTC_Cold (TL TH)
RT1
(10)
(11)
TH TL(RNTC_Cold RNTC_Hot
)
Table 6: Charging Current vs. RISET
(TL TH)RNTC_Cold RNTC_Hot
RT2
RISET (kΩ)
150
Charge Current (A)
(1 TL)THRNTC_Cold -(1-TH)TLRNTC_Hot
1.0
1.5
2.0
2.5
3.0
100
75
60
49.9
For example, the NCP18XH103 thermistor has
the following electrical characteristics:
At 0°C, RNTC_Cold = 27.22kΩ
At 50°C, RNTC_Hot = 4.16kΩ
Setting the Input Current Limit in Charge
Mode
Based on Equation (10) and Equation (11), RT1
= 6.34kΩ and RT2 = 22.82kΩ are suitable for an
NTC window between 0°C and 50°C.
Approximate values are RT1 = 6.34kΩ and RT2 =
22.6kΩ.
In charge mode, connect a resistor from ILIM to
AGND to program the input current limit if a
dedicated charger (CDP or DCP) is detected.
The relationship between the input current limit
and setting resistor is shown in Equation (7):
If no external NTC is available, connect RT1 and
RT2 to keep the voltage on NTC within the valid
NTC window (e.g.: RT1 = RT2 = 10kΩ).
40(k)
RILIM(k)
I
(A)
(7)
ILIM
Where RILIM must exceed 14.7kΩ so that IIN_LIM
VNTC
is in the range of 0A to 2.7A.
NTC Function in Charge Mode
Low Temp Threshold
RT1
VTL
Figure 16 shows that an internal resistor divider
sets the low temperature threshold (VTL) and
high temperature threshold (VTH) at 66.2% ∙
VSYS and 35.7% ∙ VSYS, respectively. For a given
NTC thermistor, select an appropriate RT1 and
RT2 to set the NTC window with Equation (8)
and Equation (9):
NTC
RNTC
RT2
High Temp Threshold
VTH
RT2 //RNTC _ Cold
VTL
(8)
TL 66.2%
Figure 16: NTC Function Block
VSYS RT1 RT2 //RNTC _ Cold
MP2632B Rev. 1.0
www.MonolithicPower.com
38
3/9/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
For convenience, an NTC thermistor design
spreadsheet is provided. Please contact MPS
for this spreadsheet
V VBATT VBATT
IN
L
(13)
IL_MAX
V fS
IN
Where VIN is the typical input voltage, VBATT is
the typical CC charge threshold, fS is the typical
switching frequency, and ∆IL_MAX is the
maximum peak-to-peak inductor current
(usually designed at 30 - 40% of the CC charge
current).
Setting the Output Current Limit in Boost
Mode
In boost mode, connect a resistor from OLIM to
AGND to program the output current limit. The
relationship between the output current limit
and the setting resistor is shown in Equation
(12):
With a typical 5V input voltage, there is a 35%
inductor current ripple at the corner point
between the trickle charge and the CC charge
(VBATT = 3V, ICC = 2.5A) and an inductance of
2.2μH.
1500
IOLIM(A)
(12)
ROLIM(k)RS1(m)
The output current limit of the boost can be
programmed up to 2.8A (min). Considering a
7% output current limit accuracy, a 3.0A output
current limit is required, typically. According to
Equation (12), given a 10mΩ sense resistor, a
49.9kΩ ROLIM can achieve a 3.0A output current
limit.
Selecting an Inductor in Boost Mode
When the MP2632B is in boost mode (as a
boost converter), the required inductance value
can be calculated with Equation (14), Equation
(15), and Equation (16):
VBATT (VSYS VBATT
VSYS fS IL_MAX
)
For safe operation, ROLIM cannot be lower than
49.9kΩ.
L
(14)
(15)
(16)
IL_MAX (30% 40%)IBATT(MAX)
VSYS ISYS(MAX)
Given a 10mΩ RS1, Table 7 lists the expected
ROLIM values for the typical output current limit.
IBATT(MAX)
Table 7: Output Current vs. ROLIM
VBATT
ROLIM (kΩ)
150
Output Current (A)
Where VBATT is the minimum battery voltage, fS
is the switching frequency, ∆IL_MAX is the peak-
to-peak inductor ripple current (approximately
30% of the maximum battery current (IBATT(MAX))),
ISYS(MAX) is the system current, and η is the
efficiency.
1.0
1.5
2.0
2.5
3.0
100
75
60
49.9
Selecting the Inductor
The worst-case scenario occurs when the
battery voltage is 3V, the typical system voltage
(VSYS) is 5V, the inductance is 1.5µH, and the
efficiency is 90%. This results in a 30% inductor
current ripple.
Inductor selection is a trade-off between cost,
size, and efficiency. A lower inductance value
results in a smaller size but also has higher
current ripples, higher magnetic hysteretic
losses, and higher output capacitances.
However, a higher inductance value results in
lower ripple current and smaller output filter
capacitors but also has higher inductor DC
resistance (DCR) loss. Choose an inductor that
will not saturate under the worst-case load
condition.
For best results, use an inductor with an
inductance of 2.2µH with a DC current rating no
lower than the peak current of the MOSFET.
For higher efficiency, minimize the inductor’s
DC resistance.
Selecting the Input Capacitor (CIN)
Selecting an Inductor in Charge Mode
The input capacitor (CIN) reduces both the
surge current drawn from the input and the
switching noise from the device. The input
capacitor impedance at the switching frequency
should be less than the input source impedance
When the MP2632B works in charge mode (as
a buck converter), estimate the required
inductance with Equation (13):
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
39
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
Selecting the Battery Capacitor (CBATT
to prevent the high-frequency switching current
from passing through to the input. For best
results, use ceramic capacitors with X7R
dielectrics, which are recommended for their
low ESR and small temperature coefficients.
For most applications, a 22µF capacitor is
sufficient.
)
CBATT is in parallel with the battery to absorb the
high-frequency switching ripple current.
Selecting a Battery Cap in Charge Mode
CBATT is the output capacitor of the buck
converter. The output voltage ripple can be
calculated with Equation (19):
Selecting the System Capacitor (CSYS
)
VBATT
VBATT
1 VBATT / VSYS
8CBATT fSW2 L
Select CSYS based on the demand of the system
current ripple.
(19)
rBATT
Selecting a System Cap in Charge Mode
Selecting a Battery Cap in Boost Mode
CSYS acts as the input capacitor of the buck
converter in charge mode. The input current
ripple can be calculated with Equation (17):
CBATT is the input capacitor of the boost
converter. The input voltage ripple is the same
as the output voltage ripple from Equation (19).
VTC (V
VTC )
Both charge mode and boost mode have the
same battery voltage ripple. CBATT can be
calculated with Equation (20):
IN_MAX
(17)
IRMS_MAX ICC_MAX
V
IN_MAX
Selecting a System Cap in Boost Mode
1 VTC / VSYS _MAX
(20)
CBATT
CSYS is the output capacitor of the boost
converter. CSYS keeps the system voltage ripple
small and ensures feedback loop stability. The
system current ripple is given by Equation (18):
8 rBATT _MAX fSW2 L
To guarantee ±0.5% BATT voltage accuracy,
the maximum BATT voltage ripple must not
exceed 0.5% (e.g.: 0.1%). The worst-case
scenario occurs at the minimum battery voltage
of the CC charge with the maximum input
voltage.
VTC (VSYS _MAX VTC )
(18)
IRMS _MAX ISYS _MAX
VSYS _MAX
Since the input voltage is passed to the system
directly, VIN_MAX = VSYS_MAX, and both charge
mode and boost mode have the same system
current ripple.
For example, VSYS_MAX = 6V, VCC_MIN = VTC = 3V,
L = 2.2µH, fS = 600kHz, ∆rBATT_MAX = 0.2%, and
CBATT is 39µF.
Two 22µF ceramic capacitors with X7R
dielectrics is sufficient.
For ICC_MAX = ISYS_MAX = 3A, VTC = 3V, VIN_MAX
=
6V, the maximum ripple current is about 1A.
Select the system capacitors based on the
ripple current temperature rise, not to exceed
10°C. For best results, use ceramic capacitors
with X7R dielectrics with low ESR and small
temperature coefficients. For most applications,
use three 22µF capacitors.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
40
MP2632B – 3A SW CHARGER, 3A BOOST, ALL-IN-ONE
PCB Layout Guidelines
7. Connect the output capacitor between the
inductor and PGND of the IC.
Efficient PCB layout is critical for specified
noise, efficiency, and stability requirements. For
best results, follow the guidelines below.
8. Connect the power pads for VIN, SYS, SW,
BATT, and PGND to as many copper
planes on the board as possible for high-
current applications.
1. Route the power stage adjacent to their
grounds.
This
improves
thermal
performance
2. Minimize the high-side switching node (SW,
inductor) trace lengths in the high-current
paths.
because the board conducts heat away
from the IC.
9. Connect a ground plane directly to the
return of all components through vias. Use
a star ground design approach to keep the
circuit block currents isolated (power-
signal/control-signal).
3. Keep the switching node short and away
from all small control signals, especially the
feedback network.
4. Place the input capacitor as close to VIN and
PGND as possible.
This reduces noise coupling and ground-
bounce issues. A single ground plane for
this design provides good results.
5. Place the local power input capacitors
connected from SYS to PGND as close to
the IC as possible.
10. Place the ISET, OLIM, and ILIM resistors
very close to their respective IC pins.
6. Place the output inductor close to the IC.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
41
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
TYPICAL APPLICATION CIRCUITS
Load in detect
Vpull-up
M3
VNTC
USB OUTPUT
VBUS
M2
CUSB
VNTC
CSYS
C2
CIN in PD
M1
L1
PB
SYS
DM2 DP2
RS1
SW
VBATT
Battery
VIN
Q1
Q2
Q3
CBATT
CSP
MP2632BQ4
BATT
VNTC
AGND
PGND
High-Side P-FET Solution
Vpull-up
VNTC
M3
USB OUTPUT
VBUS
Load in detect
M2
CSYS
C2
CIN in PD
CUSB
M1
Load in detect
PB
SYS
DM2 DP2
SW
VNTC
RS1
L1
VBATT
Battery
VIN
Q1
Q2
Q3
CBATT
CSP
MP2632BQ4
BATT
VNTC
AGND
PGND
Low-Side N-FET Solution
Figure 17: Load Detection Circuit
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
42
MP2632B – ALL-IN-ONE, 3A SW CHARGER, 3A BOOST
PACKAGE INFORMATION
QFN-26 (4mmx4mm)
PIN 1 ID
0.15x45° TYP.
PIN 1 ID
MARKING
PIN 1 ID
INDEX AREA
TOP VIEW
BOTTOM VIEW
SIDE VIEW
NOTE:
0.15x45°
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) LEAD COPLANARITY SHALL BE 0.10
MILLIMETERS MAX.
3) DRAWING CONFORMS TO JEDEC MO-220.
4) DRAWING IS NOT TO SCALE.
RECOMMENDED LAND PATTERN
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
MP2632B Rev. 1.0
3/9/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
43
相关型号：
MP2636
3.0A Single Cell Switch Mode Battery Charger with Power Path Management (PPM) and 3.0A System Boost Current
MPS
MP2636GR
3.0A Single Cell Switch Mode Battery Charger with Power Path Management (PPM) and 3.0A System Boost Current
MPS
MP2637
2.5A Single Cell Switch Mode Battery Charger with Power Path Management (PPM) and 2.4A Boost Current with Trickle Timer
MPS
©2020 ICPDF网 联系我们和版权申明