MP163AGSE-33 [MPS]
700V, Non-Isolated, Offline Regulator with Integrated LDO;
| 型号： | MP163AGSE-33 |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | 700V, Non-Isolated, Offline Regulator with Integrated LDO |
| 文件： | 总23页 (文件大小：813K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP163
700V, Non-Isolated, Offline Regulator
with Integrated LDO
The Future of Analog IC Technology
DESCRIPTION
FEATURES
Primary-Side Constant Voltage (CV) Control,
Supporting Buck, Boost, Buck-Boost, and
Flyback Topologies
The MP163 is a primary-side regulator that
provides accurate, dual-output, constant
voltage (CV) regulation without an optocoupler.
The MP163 supports buck, boost, buck-boost,
and flyback topologies and has an integrated
700V MOSFET and an LDO to simplify the
structure and reduce cost. These features make
the MP163 an ideal regulator for offline, low-
power applications, such as home appliances
and standby power.
Integrated 700V MOSFET and Current
Source
Internal LDO, Optimized for Dual Output
Applications
Less than 30mW of No-Load Power
Consumption
Up to 4W of Output Power
Low VCC Operating Current
Frequency Foldback
Limited Maximum Frequency
Peak-Current Compression
Internally Biased VCC
The MP163 is
a
green-mode operation
regulator. Both the peak current and switching
frequency decrease as the load decreases.
This feature provides excellent efficiency at light
load and improves overall average efficiency.
Thermal Shutdown, UVLO, OLP, SCP, and
Open-Loop Protection
Full protection features include thermal
shutdown, VCC under-voltage lockout (UVLO),
Available in SOIC16 and SOIC8-7B
Packages
overload
protection
(OLP),
short-circuit
protection (SCP), and open-loop protection.
APPLICATIONS
The MP163 is available in SOIC16 and SOIC8-
7B packages.
Home Appliances, White Goods, and
Consumer Electronics
Typical
Industrial Controls
Standby Power
HV
Regulator
Peak
Current
Limit
Typical
HV
MOSFET
RDS(on)
LDO
Output
Voltage
Part
Number
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.
MP163A-33
MP163A-5*
MP163B-33
MP163B-5*
MP163C-33
MP163C-5
3.3V
5V
210mA
420mA
660mA
16Ω
14Ω
3.3V
5V
3.3V
5V
13.5Ω
* Under development.
MP163 Rev. 1.01
8/11/2017
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1
MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
TYPICAL APPLICATION
MP163 Rev. 1.01
8/11/2017
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
ORDERING INFORMATION
Part Number*
Package
Top Marking
MP163AGS-33
MP163AGSE-33
MP163BGS-33
MP163BGSE-33
MP163CGS-5
MP163CGSE-5
MP163CGSE-33
MP163CGS-33
SOIC8-7B
SOIC16
SOIC8-7B
SOIC16
SOIC8-7B
SOIC16
SOIC16
See Below
See Below
See Below
See Below
See Below
See Below
See Below
See Below
SOIC8-7B
* For Tape & Reel, add suffix –Z (e.g. MP163AGS-33–Z)
TOP MARKING (MP163AGS-33)
TOP MARKING (MP163AGSE-33)
MPS: MPS prefix
YY: Year code
WW: Week code
MP163A-33: Part number
LLLLLLLLL: Lot number
M163A-33: Part number
LLLLLLLL: Lot number
MPS: MPS prefix
Y: Year code
WW: Week code
TOP MARKING (MP163BGS-33)
TOP MARKING (MP163BGSE-33)
MPS: MPS prefix
YY: Year code
WW: Week code
MP163B-33: Part number
LLLLLLLLL: Lot number
M163B-33: Part number
LLLLLLLL: Lot number
MPS: MPS prefix
Y: Year code
WW: Week code
MP163 Rev. 1.01
8/11/2017
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3
MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
TOP MARKING (MP163CGS-5)
TOP MARKING (MP163CGSE-5)
MP163C-5: Part number
LLLLLLLL: Lot number
MPS: MPS prefix
Y: Year code
MPS: MPS prefix
YY: Year code
WW: Week code
MP163C-5: Part number
LLLLLLLLL: Lot number
WW: Week code
TOP MARKING (MP163CGS-33)
TOP MARKING (MP163CGSE-33)
MPS: MPS prefix
YY: Year code
WW: Week code
MP163C-33: Part number
LLLLLLLLL: Lot number
M163C-33: Part number
LLLLLLLL: Lot number
MPS: MPS prefix
Y: Year code
WW: Week code
MP163 Rev. 1.01
8/11/2017
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
PACKAGE REFERENCE
TOP VIEW
TOP VIEW
SOIC-8-7B
SOIC-16
Thermal Resistance (4) θJA
SOIC-8-7B............................. 86....... 38... °C/W
SOIC-16................................. 80....... 35... °C/W
θJC
ABSOLUTE MAXIMUM RATINGS (1)
DRAIN to all other pins .................-0.3V to 700V
SOURCE, VCC, FB to all other pins (except
DRAIN) .........................................-0.3V to 700V
EN, IN to GND ................................-0.3V to 42V
OUT to GND ...................................-0.3V to 17V
VCC, FB to SOURCE ....................-0.3V to 6.5V
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 allowance continuous power dissipation at
any ambient temperature is calculated by PD(MAX)=(TJ(MAX)-
TA)/θJA. Exceeding the maximum allowance power dissipation
will produces an excessive die temperature, causing the
regulator to go into thermal shutdown. Internal thermal
shutdown circuit protects the device from permanent damage.
3) The device is not guaranteed to function outside of its
operating conditions.
(2)
Continuous power dissipation (TA = +25°C)
SOIC-8-7B ...............................................1.45W
SOIC-16................................................... 1.56W
Junction temperature ..............................150°C
Lead temperature....................................260°C
Storage temperature.............. -60°C to +150°C
ESD capability human body model....... 2.0kV
4) Measured on JESD51-7, 4-layer PCB.
Recommended Operating Conditions (3)
Operating junction temp. (TJ)... -40°C to +125°C
MP163 Rev. 1.01
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
ELECTRICAL CHARACTERISTICS
VCC = 5.5V, TJ = -40°C ~ 125°C, min and max are guaranteed by characterization, typical is
tested at 25°C, unless otherwise specified.
Parameter
Symbol Condition
Min
Typ
Max Units
Start-Up Current Source and Internal MOSFET (DRAIN)
Internal regulator supply
current
Iregulator
VCC = 4V, VDRAIN = 100V
2.2
4.1
10
6
mA
DRAIN leakage current
Breakdown voltage
ILeak
VCC = 5.8V, VDRAIN = 400V
TJ = 25°C
17
μA
V(BR)DSS
700
V
MP163AGS-5, MP163AGS-33,
MP163AGSE-5, MP163AGSE-33,
TJ = 25°C
16
14
20
18
17
Ω
MP163BGS-5, MP163BGS-33,
MP163BGSE-5, MP163BGSE-33,
TJ = 25°C
On resistance
Ron
MP163CGS-5, MP163CGS-33,
MP163CGSE-5, MP163CGSE-33,
TJ = 25°C
13.5
Supply Voltage Management (VCC)
VCC level (increasing) where
the internal regulator stops
VCCOFF
5.4
5.1
130
3
5.6
5.3
250
3.4
2.4
6
V
V
VCC level (decreasing) where
the internal regulator turns on
VCCON
5.8
VCC regulator on and off
hysteresis
mV
V
VCC level (decreasing) where
the IC stops
VCCstop
3.6
VCC level (decreasing) where
the protection phase ends
VCCpro
ICC
2.8
720
200
V
Internal IC consumption
μA
μA
TON = τmaxon, TOFF = τminoff
Internal IC consumption (no
switching)
ICC
Internal IC consumption, latch-
off phase
ICCLATCH VCC = 5.3V
16
24
μA
Internal Current Sense
Leading-edge blanking
350
180
ns
ns
τLEB1
τLEB1
Leading-edge blanking for SCP
(5)
MP163AGS-5, MP163AGS-33,
MP163AGSE-5, MP163AGSE-33,
TJ = 25°C
188
380
600
210
420
660
232
460
720
MP163BGS-5, MP163BGS-33,
MP163BGSE-5, MP163BGSE-33,
TJ = 25°C
Peak current limit
ILimit
mA
MP163CGS-5, MP163CGS-33,
MP163CGSE-5, MP163CGSE-33,
TJ = 25°C
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
ELECTRICAL CHARACTERISTICS (continued)
VCC = 5.5V, TJ = -40°C ~ 125°C, min and max are guaranteed by characterization, typical is
tested at 25°C, unless otherwise specified.
Parameter
Symbol Condition
MP163AGS-5, MP163AGS-33,
Min
Typ
Max Units
MP163AGS-5, MP163AGS-33,
TJ = 25°C
330
400
510
MP163BGS-5, MP163BGS-33,
MP163BGSE-5, MP163BGSE-33,
TJ = 25°C
500
750
600
900
760
mA
SCP threshold
ISCP
MP163CGS-5, MP163CGS-33,
MP163CGSE-5, MP163CGSE-33,
TJ = 25°C
Feedback Input (FB)
MP163AGS-5, MP163AGS-33,
MP163AGS-5, MP163AGS-33
7.5
9
10
12
12.5
MP163BGS-5, MP163BGS-33,
MP163BGSE-5, MP163BGSE-33
Minimum off time
15
15
μs
μs
τminoff
MP163CGS-5, MP163CGS-33,
MP163CGSE-5, MP163CGSE-33
9.5
13
12
MP163AGS-5, MP163AGS-33,
MP163AGS-5, MP163AGS-33
18
23
MP163BGS-5, MP163BGS-33,
MP163BGSE-5, MP163BGSE-33
Maximum on time
17
24
31
τmaxon
MP163CGS-5, MP163CGS-33,
MP163CGSE-5, MP163CGSE-33
19
24
31
Primary MOSFET feedback
turn-on threshold
VFB
2.45
2.55
2.65
V
V
MP163AGS-5, MP163AGS-33,
MP163AGSE-5, MP163AGSE-33,
MP163BGS-5, MP163BGS-33,
MP163BGSE-5, MP163BGSE-33,
1.64
1.6
1.74
1.84
1.8
OLP feedback trigger threshold
VFB_OLP
MP163CGS-5, MP163CGS-33,
MP163CGSE-5, MP163CGSE-33,
1.7
MP163AGS-5, MP163AGS-33,
MP163AGSE-5, MP163AGSE-33,
175
TON = τmaxon, TOFF = τminoff
MP163BGS-5, MP163BGS-33,
MP163BGSE-5, MP163BGSE-33,
MP163CGS-5, MP163CGS-33,
MP163CGSE-5, MP163CGSE-33,
OLP delay time
ms
V
τOLP
220
0.5
TON = τmaxon, TOFF = τminoff
Open-loop detection
VOLD
0.4
0.6
Thermal Shutdown
Thermal shutdown threshold (5)
150
30
°C
°C
Thermal shutdown recovery
hysteresis (5)
MP163 Rev. 1.01
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
ELECTRICAL CHARACTERISTICS (continued)
VEN = VIN, COUT = 1μF, TJ = -40°C ~ 125°C, min and max are guaranteed by characterization,
typical is tested at 25°C, unless otherwise specified.
Parameter
LDO
Symbol Condition
Min
Typ
Max Units
MP163AGS-33, MP163AGSE-33,
MP163BGS-33, MP163BGSE-33,
MP163CGS-33, MP163CGSE-33
VOUT = 0V, VIN = 4.3V, TJ = 25°C
LDO load current limit
ILDO
180
270
390
mA
mV
V
MP163AGS-5, MP163AGSE-5,
MP163BGS-5, MP163BGSE-5,
MP163CGS-5, MP163CGSE-5,
VOUT = 0V, VIN = 6V, TJ = 25°C
ILOAD = 150mA, VIN = VOUT(NOM)
0.1V
-
Dropout voltage
Output voltage
VDROPOUT
620
3.3
1100
MP163AGS-33, MP163AGSE-33,
MP163BGS-33, MP163BGSE-33,
MP163CGS-33, MP163CGSE-33,
VIN = 4.3V, IOUT = 0A
3.234
4.9
3.366
VLDO
MP163AGS-5, MP163AGSE-5,
MP163BGS-5, MP163BGSE-5,
MP163CGS-5, MP163CGSE-5,
VIN = 6V, IOUT = 0A
5
5.1
1.64
1.46
9
MP163AGSE-5, MP163AGSE-33,
MP163BGSE-5, MP163BGSE-33,
MP163CGSE-5, MP163CGSE-33,
VIN = VOUT(NOM) + 1V
EN rising threshold
ENTH_R
ENTH_F
ISHDN
1.32
1.07
1.48
1.26
3
V
V
MP163BGSE-5, MP163BGSE-33,
MP163BGSE-5, MP163BGSE-33,
MP163CGSE-5, MP163CGSE-33,
VIN = VOUT(NOM) + 1V
EN falling threshold
Shutdown supply current
MP163AGSE-5, MP163AGSE-33,
MP163BGSE-5, MP163BGSE-33,
MP163CGSE-5, MP163CGSE-33,
VEN = 0V, VIN = 40V
µA
μA
MP163AGSE-5, MP163AGSE-33,
MP163BGSE-5, MP163BGSE-33,
MP163CGSE-5, MP163CGSE-33,
VEN = 15V, VIN = 40V
EN input current
IEN
0.1
Thermal shutdown (5)
165
20
°C
°C
Thermal shutdown hysteresis
(5)
NOTE:
5) Guaranteed by design.
MP163 Rev. 1.01
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
TYPICAL CHARACTERISTICS
810
800
790
780
770
760
750
740
730
720
710
5.73
5.72
5.71
5.70
5.69
2.56
2.55
2.54
2.53
2.52
-40-25-10 5 20 35 50 65 80 95110125
-40-25-10 5 20 35 50 65 80 95110125
-40-25-10 5 20 35 50 65 80 95110125
2.60
2.55
2.50
2.45
2.40
2.35
2.30
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
5.50
5.49
5.48
5.47
5.46
5.45
5.44
5.43
5.42
-40-25-10 5 20 35 50 65 80 95110125
-40-25-10 5 20 35 50 65 80 95110125
-40-25-10 5 20 35 50 65 80 95110125
1.04
1.03
1.02
1.01
1.00
0.99
0.98
1.10
1.05
1.00
0.95
0.90
0.85
1.10
1.05
1.00
0.95
0.90
0.85
0.80
-40-25-10 5 20 35 50 65 80 95110125
-40-25-10 5 20 35 50 65 80 95110125
-40-25-10 5 20 35 50 65 80 95110125
MP163 Rev. 1.01
8/11/2017
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
TYPICAL PERFORMANCE CHARACTERISTICS
MP163CGS-5, VIN = 230VAC, VOUT1 = 12V, IOUT1 = 200mA, VOUT2 = 5V, IOUT2 = 50mA, L = 1mH, TA =
+25°C, unless otherwise noted.
MP163 Rev. 1.01
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
PIN FUNCTIONS
Pin #
SOIC8-7B
Pin #
SOIC16
Name
IN
Description
1
15
Input voltage of the LDO.
Internal power MOSFET source. SOURCE is also the ground reference
for VCC and FB.
2
11
SOURCE
Internal power MOSFET drain. DRAIN is also the high-voltage current
source input.
4
8
DRAIN
5
6
7
8
9
10
VCC
FB
Control circuit power supply.
Regulator feedback.
1, 4, 14
3
GND
OUT
Ground of the LDO.
Output voltage of the LDO.
Enable of the integrated LDO. Drive EN to logic high to enable the LDO.
Drive EN to logic low to shut down the LDO.
-
-
16
EN
NC
2, 5, 6,
7, 12, 13
No connection.
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
BLOCK DIAGRAM
DRAIN
VCC
Start-Up Unit
Power
Management
Driving Signal
Management
Feedback Control
Peak Current
Limitation
Protection Unit
FB
SOURCE
LDO
IN
OUT
GND
Figure 1: Functional Block Diagram
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
OPERATION
The MP163 is a green-mode operation
regulator. The peak current and the switching
frequency both decrease with a decreasing load.
As a result, the MP163 offers excellent light-
load efficiency and improves overall average
efficiency. The regulator also incorporates
multiple features and operates with a minimum
number of external components.
Figure 2: Minimum Off Time at Start-Up
Constant Voltage (CV) Operation
The MP163 regulates the output voltage by
monitoring the sampling capacitor (C3).
The MP163 acts as a fully integrated regulator
when used in a buck topology (see the Typical
Application on page 2).
At the beginning of each cycle, the integrated
MOSFET turns on while the feedback voltage
drops below the 2.55V reference voltage, which
indicates an insufficient output voltage. The
peak current limitation determines the on period.
After the on period elapses, the integrated
MOSFET turns off. The sampling capacitor (C3)
voltage is charged to the output voltage through
D3 when the freewheeling diode (D2) turns on.
This way, the sampling capacitor (C3) samples
and holds the output voltage for output
regulation. The sampling capacitor (C3) voltage
decreases when the inductor (L1) current falls
below the output current. When the feedback
voltage falls below the 2.55V reference voltage,
a new switching cycle begins. Figure 3 shows
this operation in continuous conduction mode
(CCM).
Start-Up and Under-Voltage Lockout (UVLO)
The internal high-voltage regulator self-supplies
the IC from DRAIN. When VCC reaches
VCCOFF, the IC starts switching, and the internal
high-voltage regulator turns off. The internal
high-voltage regulator turns on to charge the
external VCC capacitor when VCC falls below
VCCON. A small capacitor (in the low μF range)
maintains VCC and lowers the capacitor cost.
The IC stops switching when VCC drops below
VCCstop
.
Under fault conditions (such as OLP, SCP, and
TSD) the IC stops switching, and an internal
current source (~16μA) discharges the VCC
capacitor. The internal high-voltage regulator
will not charge the VCC capacitor until VCC
drops below VCCpro. The restart time can be
estimated using Equation (1):
MOSFET
Diode
VCC VCCpro VCCOFF VCC
(1)
pro
T
CVCC
restart
ICCLATCH
Iregulator
IL
Ipeak
Io
Soft Start (SS)
Vo
The IC stops operation when VCC drops below
VCCstop. The IC begins operation when VCC
charges to VCCOFF. There is a soft-start
period whenever the chip starts operation.
Soft start prevents the inductor current from
overshooting by limiting the minimum off time.
VFB
2.55V
Figure 3: VFB vs. VO
Determine the output voltage with Equation
(2):
The MP163 adopts a two-phase minimum off-
time limit soft start. Each soft-start phase lasts
for 128 switching cycles. During soft start, the
off-time limit shortens gradually from τminoff_SS1
to τminoff_SS2 and reaches τminoff (see Figure 2).
R1 R2
(2)
Vo 2.55V
R2
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
Frequency Foldback and Peak Current
Compression
The MP163 remains highly efficient at light-load
condition by reducing the switching frequency
automatically.
Under light-load or no-load conditions, the
output voltage drops very slowly, which
increases the MOSFET off time, and the
frequency decreases with the load.
The switching frequency in CCM is determined
with Equation (3):
Figure 4: EA and Ramp Compensation
Overload Protection (OLP)
The maximum output power of the MP163 is
limited by the maximum switching frequency
and peak current limit. If the load current is too
large, the output voltage drops, causing the FB
voltage to drop.
(V Vo ) Vo
in
fs
(3)
2L(Ipeak Io ) V
in
The switching frequency in discontinuous
conduction mode (DCM) is determined with
Equation (4):
When FB voltage drops below VFB_OLP, this is
considered to be an error flag, and the timer
starts. If the timer reaches 220ms (fS = 28kHz),
overload protection (OLP) occurs. This timer
duration prevents OLP from being triggered
when the power supply starts up or the load
transitions. The power supply should start up in
less than 220ms (fS = 28kHz). The OLP delay
time is calculated using Equation (6):
2(V VO ) IoVo
in
fs
(4)
LI2peak
V
in
As the peak current limit decreases from ILimit
,
the off time increases. In standby mode, the
frequency and the peak current are both
minimized, allowing for a smaller dummy load.
As a result, peak current compression helps
further reduce no-load consumption. The peak
current limit can be estimated with Equation (5):
28kHz
Delay 220ms
(6)
fs
IPeak (1 0.0038(Toff minoff )/s)ILimit (5)
Short-Circuit Protection (SCP)
Where τoff is the off time of the power
The MP163 monitors the peak current and
shuts down the MOSFET when the peak
current rises above the short-circuit protection
(SCP) threshold. The power supply resumes
operation with the removal of the fault.
module.
Error Amplifier (EA) Compensation
The MP163 has an internal error amplifier (EA)
compensation loop that samples the feedback
voltage 6µs after the MOSFET turns off and
regulates the output based on the 2.55V
reference voltage.
Thermal Shutdown
To prevent thermal-induced damage, the
MP163 stops switching when the junction
temperature exceeds 150°C. During thermal
shutdown, the VCC capacitor is discharged to
VCCpro, and then the internal high-voltage
regulator re-charges. The MP163 recovers
when the junction temperature drops below
120°C.
Ramp Compensation
An internal ramp compensation circuit improves
the load regulation. An exponential voltage
signal is added to pull down the reference
voltage of the feedback comparator (see Figure
4). The ramp compensation is a function of the
load conditions. The compensation is about
1mV/µs in full-load condition and increases
exponentially as the peak current decreases.
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
Open-Loop Detection
Integrated LDO
The continuous output current of the integrated
LDO is up to 150mA but is also limited by the
thermal performance. The peak output current
is limited to 270mA in OLP.
If FB voltage is less than 0.5V, the IC stops
switching, and a restart cycle begins. During a
soft start, the open-loop detection is blanked.
Leading-Edge Blanking (LEB)
When the input of the integrated LDO (usually
the high-side buck output of the MP163) is
much higher than its output, there is a large
power dissipation on the MP163, which
worsens the thermal performance. An external
resistor connected to IN can help with the LDO
thermal by sharing part of the total voltage drop.
An internal leading-edge blanking (LEB) unit
avoids premature switching pulse termination
due to a turn-on spike. A turn-on spike is
caused by parasitic capacitance and reverse
recovery of the freewheeling diode. During the
blanking time, the current comparator is
disabled and cannot turn off the external
MOSFET. Figure 5 shows the leading-edge
blanking.
IDS
350ns
ILIMIT
t
Figure 5: Leading-Edge Blanking
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
The maximum power in CCM can be calculated
with Equation (7)
APPLICATION INFORMATION
Topology Options
Vominoff
The MP163 can be used in common topologies
such as buck, boost, buck-boost, and flyback.
(7)
P
Vo(Ipeak
)
omax
2L
The maximum power in DCM can be calculated
with Equation (8):
Component selection is based on the Typical
Application shown on page 2.
1
1
LIp2eak
Selecting the Input Capacitor
(8)
P
omax
2
minoff
The input capacitor supplies DC input voltage
for the converter. Figure 6 shows the typical DC
bus voltage waveform of a half-wave rectifier
and a full-wave rectifier.
For mass production, tolerance on the
parameters (such as peak-current limitation and
the minimum off time) should be taken into
consideration.
VDC(max)
Vin
DC input voltage
Freewheeling Diode
Select a diode with a maximum reverse voltage
rating greater than the maximum input voltage
and a current rating determined by the output
current.
VDC(min)
AC input voltage
t
The reverse recovery of the freewheeling diode
can affect efficiency and circuit operation during
CCM, so use an ultra-fast diode, such as the
UGC10JH.
VDC(max)
Vin
DC input voltage
VDC( min)
Selecting the Output Capacitor
AC input voltage
The output capacitor is required to maintain the
DC output voltage. Estimate the output voltage
ripple in CCM using Equation (9):
t
Figure 6: Input Voltage Waveform
Typically, the use of a half-wave rectifier
requires an input capacitor rated at 3µF/W for
the universal input condition. When using a full-
wave rectifier, the input capacitor is chosen
between 1.5 ~ 2µF/W for the universal input
condition. A half-wave rectifier is recommended
for output applications less than 2W. Otherwise,
use a full-wave rectifier.
i
8fsCo
(9)
VCCM_ripple
iRESR
Estimate the output voltage ripple in DCM with
Equation (10):
2
Ipk I
Io
(10)
VDCM_ripple
Ipk RESR
o
fsCo
Ipk
Under very low input voltages, the inductor
current ramps up slowly. It may not reach the
current limit during τmaxon, so the MOSFET on
time should be less than the minimum value of
It is recommended to use ceramic, tantalum, or
low ESR electrolytic capacitors to reduce the
output voltage ripple.
Feedback Resistors
τmaxon
.
The resistor divider connected to FB
determines the output voltage. Choose
appropriate R1 and R2 values to set the
output voltage. R2 should be about a few kΩ
to tens of kΩ in value.
Selecting the Inductor
The MP163 has a minimum off time limit that
determines the maximum power output. A
power inductor with a larger inductance
increases the maximum power. Using a very
small inductor may cause failure at full load.
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
Feedback Capacitor
applications, R3 should be adjusted to meet the
application’s specific IS. In particular
configuration, IS is measured at about 200µA.
a
The feedback capacitor provides a sample-and-
hold function. Small capacitors result in poor
regulation at light loads, and large capacitors
affect the circuit operation. Roughly estimate an
optimal capacitor value using Equation (11):
Surge Performance
An appropriate input capacitor value should be
chosen to obtain a good surge performance.
Figure 8 shows the half-wave rectifier. Table 1
shows the capacitance required under normal
conditions for different surge voltages. FR1 is a
20ꢀ/2W fused resistor, and L1 is 1mH for this
recommendation.
Vo
Co
Vo
Co
1
CFB
(11)
2 R1 R2 Io
R1 R2 Io
Dummy Load
A dummy load is required to maintain the load
regulation. This ensures sufficient inductor
energy to charge the sample-and-hold
capacitor to detect the output voltage. Normally,
a 3mA dummy load is needed and can be
adjusted according to the regulated voltage.
There is a compromise between small, no-load
consumption and good, no-load regulation,
especially for applications that require 30mW of
no-load consumption. Use a Zener diode to
reduce the no-load consumption if no-load
regulation is not a concern.
L1
FR1
L
C1
C2
N
Figure 8: Half-Wave Rectifier
Table 1: Recommended Capacitance
Auxiliary VCC Supply
Surge
Voltage
C1
500V
1000V
2000V
For MP163 applications which have a VOUT
above 7V, a less than 30mW no-load power
consumption can be achieved by adopting
an external VCC supply to reduce overall power
consumption (see Figure 7).
1μF
1μF
2.2μF
2.2μF
3.3μF
3.3μF
C2
Figure 7: Auxiliary VCC Supply Circuit
This auxiliary VCC supply is derived from the
resistor connected between C3 and C4. C4
should be larger than the value recommended
above. D3 is used in case that VCC interferes
with FB. R3 is determined using Equation (12):
VOUT VFW 5.8V
(12)
R3
IS
Where IS is the VCC consumption under a no-
load condition, and VFW is the forward voltage
drop of D3. Because IS varies in different
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
PCB Layout Guidelines
Design Example
Efficient PCB layout is critical for stable
operation, good EMI, and good thermal
performance. For best results, refer to Figure
9 and follow the guidelines below.
Table 2 shows a design example for the
following application guideline specifications.
Table 2: Design Example
VIN
85VAC to 265VAC
VOUT1
IOUT1
VOUT2
IOUT2
12V
200mA
5V
1) Minimize the loop area formed by the input
capacitor, IC, freewheeling diode, inductor,
and output capacitor.
50mA
2) Place the power inductor far away from the
input filter while keeping the loop area to
the inductor at a minimum.
The detailed application schematic is shown in
Figure 10. The typical performance and circuit
waveforms are shown in the Typical
Performance Characteristics section. For
additional device applications, please refer to
the related evaluation board datasheets.
3) Place a capacitor valued at several hundred
pF between FB and SOURCE as close to
the IC as possible.
4) Connect the exposed pads or large copper
area with DRAIN to improve thermal
performance.
Top Layer
Bottom Layer
Figure 9: Recommended Layout
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
TYPICAL APPLICATION CIRCUIT
Figure 10 shows a typical application example of a 12V/200mA and 5V/50mA non-isolated power
supply using the MP163CGS-5.
Figure 10: Typical Application at 12V/200mA and 5V/50mA
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
FLOW CHART
Power On
Vcc Decrease
to VCCPRO
Internal High Voltage
Regulator On
Stop Operation
Y
N
Shut Down
Internal High Voltage
Regulator
Y
VCC>VCCOFF
Soft Start
N
Y
VCC>VCCSTOP
Y
N
Fault Logic
High?
Monitor VCC
Shuts Down
Internal High Voltage
Y
N
N
VCC>VCCOFF
VCC<VCCON
Y
Regulator
TSD, SCP
and Open-Loop
Monitor
Internal High Voltage
Regulator On
Monitor FB Voltage
Open-Loop Logic High
Y
N
N
N
Y
N
Counts to 6144
Switching
Cycle?
< VOLD
< VFB
< VFB_OLP
Y
Y
Y
OLP Fault
Logic High?
Turn On the
MOSFET
OLP Fault
Logic High
Count Switching
Cycle
N
Reset Counter
UVLO, SCP, OLP, OTP and Open-Loop Protections are Auto Restart
Figure 11: Control Flow Chart
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
SIGNAL SEQUENCE
Figure 11: Signal Evolution in the Presence of a Fault
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
PACKAGE INFORMATION
SOIC16
0.386( 9.80)
0.394(10.00)
0.024(0.61)
0.050(1.27)
9
16
0.063
(1.60)
0.150
(3.80)
0.157
(4.00)
0.228
(5.80)
0.244
(6.20)
0.213
(5.40)
PIN 1 ID
8
1
TOP VIEW
RECOMMENDED LAND PATTERN
0.053(1.35)
0.069(1.75)
SEATING PLANE
0.0075(0.19)
0.0098(0.25)
0.050(1.27)
BSC
0.013(0.33)
0.020(0.51)
0.004(0.10)
0.010(0.25)
SEE DETAIL "A"
SIDE VIEW
FRONT VIEW
NOTE:
0.010(0.25)
0.020(0.50)
x 45o
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN
BRACKET IS IN MILLIMETERS.
GAUGE PLANE
0.010(0.25) BSC
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSIONS OR GATE BURRS.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH
OR PROTRUSIONS.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.004" INCHES MAX.
5) DRAWING CONFORMS TO JEDEC MS-012, VARIATION AC.
6) DRAWING IS NOT TO SCALE.
0.016(0.41)
0.050(1.27)
0o-8o
DETAIL "A"
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MP163 – 700V, NON-ISOLATED, OFFLINE REGULATOR WITH INTEGRATED LDO
PACKAGE INFORMATION (continued)
SOIC8-7B
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.
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