TLE8386ELXUMA1 [INFINEON]
Switching Controller, Current-mode, 0.09A, 500kHz Switching Freq-Max, PDSO14, GREEN, PLASTIC, SSOP-14;
| 型号： | TLE8386ELXUMA1 |
| 厂家： | 
Infineon |
| 描述： | Switching Controller, Current-mode, 0.09A, 500kHz Switching Freq-Max, PDSO14, GREEN, PLASTIC, SSOP-14 开关 光电二极管 |
| 文件： | 总26页 (文件大小：1394K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TLE8386EL
Smart Boost Controller
Datasheet
Rev. 1.0, 2009-11-30
Automotive Power
TLE8386EL
Table of Contents
Table of Contents
1
2
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
3.1
3.2
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1
4.2
4.3
5
5.1
5.2
Boost Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6
6.1
6.2
Oscillator and Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7
7.1
7.2
Enable Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8
8.1
8.2
Linear Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
9
9.1
9.2
Protection and Diagnostic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
10
Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
11
11.1
Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Further Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
12
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Datasheet
2
Rev. 1.0, 2009-11-30
Smart Boost Controller
TLE8386EL
1
Overview
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
Wide Input Voltage Range from 4.75 V to 45 V
Constant Current or Constant Voltage Regulation
Very Low Shutdown Current: IQ< 10 µA
Flexible Switching Frequency Range, 100 kHz to 500 kHz
Synchronization with external clock source
Output Open Circuit Diagnostic Output
Available in a small thermally enhanced PG-SSOP-14 package
Internal 5 V Low Drop Out Voltage Regulator
Output Overvoltage Protection
PG-SSOP-14
Internal Soft Start
Over Temperature Shutdown
Automotive AEC Qualified
Green Product (RoHS) Compliant
Description
The TLE8386EL is a boost controller with built in protection and diagnostic features. The main function of this
device is step-up (boost) an input voltage to a larger output voltage. The diagnostics are communicated on a status
output (pin ST) to indicate a fault conditions such as over temperature, open feedback and open load. The
switching frequency is adjustable in the range of 100 kHz to 500 kHz and can be synchronized to an external clock
source. The TLE8386EL features an enable function reducing the shut-down current consumption to <10 µA. The
current mode regulation scheme of this device provides a stable regulation loop maintained by small external
compensation components. The integrated soft-start feature limits the current peak as well as voltage overshoot
at start-up. This IC is suited for use in the harsh automotive environments and provides protection functions such
as output overvoltage protection and overtemperature shutdown.
Type
Package
Marking
TLE8386EL
PG-SSOP-14
TLE8386
Datasheet
3
Rev. 1.0, 2009-11-30
TLE8386EL
Block Diagram
2
Block Diagram
14
LDO
1
IN
IVCC
SWO
Power On
Reset
Internal
Supply
On/Off
Logic
EN_INT
13
11
EN
Power Switch
Soft
2
Start
Gate Driver
Oscillator
FREQ/
SYNC
PWM
Generator
Slope
4
3
SWCS
SGND
Comp.
Switch Current
Error Amplifier
Leading Edge
Blanking
Thermal
Protection
Diagnostics
Logic
10
8
Over Volage
Protection
ST
9
OVFB
Open Load
Detection
6
7
FBH
FBL
Feedback Voltage
Error Amplifier
COMP
12
BlockDiagram.vsd
GND
Figure 1
Block Diagram
Datasheet
4
Rev. 1.0, 2009-11-30
TLE8386EL
Pin Configuration
3
Pin Configuration
3.1
Pin Assignment
ꢁ
ꢂ
ꢃ
ꢄ
ꢅ
ꢆ
ꢇ
ꢁꢄ
ꢁꢃ
ꢁꢂ
ꢁꢁ
ꢁꢉ
ꢈ
,9&&
6:2
,1
(1
*1'
6*1'
6:&6
)5(4ꢀ6<1&
67
1&
)%+
29)%
)%/
ꢊ
&203
SLQFRQILJBVVRSꢋꢁꢄꢌVYJ
Figure 2
Pin Configuration
3.2
Pin Definitions and Functions
Pin
Symbol
Function
1
IVCC
Internal LDO Output;
Used for internal biasing and gate drive. Bypass with external capacitor. Do not
leave pin IVCC open.
2
3
4
5
6
7
8
SWO
SGND
SWCS
NC
Switch Output;
Connect to gate of external boost converter switching MOSFET
Current Sense Ground;
Ground return for current sense switch
Current Sense Input;
Detects the peak current through switch
No Connect;
FBH
Voltage Feedback Positive;
Non inverting Input (+)
Voltage Feedback Negative;
Inverting Input (-)
Compensation Input;
Connect R and C network to pin for stability
FBL
COMP
Datasheet
5
Rev. 1.0, 2009-11-30
TLE8386EL
Pin Configuration
Pin
Symbol
Function
9
OVFB
Output Overvoltage Protection Feedback;
Connect to resistive voltage divider to set overvoltage threshold.
10
11
ST
Status Output;
Open drain diagnostic output to indicate fault condition.
Connect pull up resistor to pin.
FREQ / SYNC
Frequency Select or Synchronization Input;
Connect external resistor to GND to set frequency.
Or apply external clock signal for synchronization within frequency capture range.
12
13
14
GND
EN
Ground;
Connect to system ground.
Enable;
Apply logic high signal to enable device.
IN
Supply Input;
Supply for internal biasing.
Exposed Pad
Connect to GND.
Datasheet
6
Rev. 1.0, 2009-11-30
TLE8386EL
General Product Characteristics
4
General Product Characteristics
4.1
Absolute Maximum Ratings
Absolute Maximum Ratings1)
Tj = -40 °C to +150 °C; all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Max.
Unit Conditions
Min.
Voltages
4.1.1
IN
VIN
-0.3
-40
45
45
5.5
45
45
V
V
V
V
V
V
V
V
V
V
V
V
Supply Input
4.1.2
4.1.3
4.1.4
4.1.5
EN
VEN
Enable Input
FBH-FBL;
Feedback Error Amplifier Differential
VFBH-VFBL
VFBH
VFBL
-5.5
-0.3
-0.3
FBH;
Feedback Error Amplifier Positive Input
FBL
Feedback Error Amplifier Negative Input
4.1.6
4.1.7
4.1.8
4.1.9
4.1.10
4.1.11
4.1.12
OVFB
VOVP
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
5.5
6.2
5.5
6.2
5.5
6.2
0.3
Over Voltage Feedback Input
t < 10s
t < 10s
t < 10s
SWCS
VSWCS
VSWO
VSGND
VCOMP
Switch Current Sense Input
SWO
Switch Gate Drive Output
SGND
Current Sense Switch GND
4.1.13
4.1.14
4.1.15
4.1.16
4.1.17
4.1.18
4.1.19
4.1.20
COMP
Compensation Input
-0.3
-0.3
5.5
6.2
5.5
6.2
45
5
5.5
6.2
V
V
V
V
V
mA
V
t < 10s
t < 10s
FREQ / SYNC; Frequency and
Synchronization Input
VFREQ / SYNC -0.3
-0.3
-0.3
-5
-0.3
-0.3
ST
VST
IST
VIVCC
Diagnostic Status Output
IVCC
Internal Linear Voltage Regulator Output
V
t < 10s
Temperatures
4.1.21
4.1.22
Junction Temperature
Storage Temperature
Tj
Tstg
-40
-55
150
150
°C
°C
–
–
Datasheet
7
Rev. 1.0, 2009-11-30
TLE8386EL
General Product Characteristics
Absolute Maximum Ratings1)
Tj = -40 °C to +150 °C; all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Max.
Unit Conditions
Min.
ESD Susceptibility
4.1.23
4.1.24
4.1.25
ESD Resistivity to GND
ESD Resistivity to GND
ESD Resistivity Pin 1, 7, 8, 14 (corner
pins) to GND
VESD,HBM
VESD,CDM
VESD,CDM,C
-2
-500
-750
2
500
750
kV
V
V
HBM2)
CDM3)
CDM3)
1) Not subject to production test, specified by design.
2) ESD susceptibility, Human Body Model “HBM” according to EIA/JESD 22-A114B
3) ESD susceptibility, Charged Device Model “CDM” EIA/JESD22-C101 or ESDA STM5.3.1
Note:Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Note:Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
4.2
Functional Range
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
4.75
4.5
Max.
45
45
4.2.1
4.2.2
Supply Voltage Input
Feedback Voltage Input
VIN
V
V
V
–
IVCC > VIVCC,RTH,d
VFBH;
VFBL
4.2.3
Junction Temperature
Tj
-40
150
°C
–
Note:Within the functional range the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the related electrical characteristics table.
4.3
Thermal Resistance
Note:This thermal data was generated in accordance with JEDEC JESD51 standards. For more information, go
to www.jedec.org.
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
10
47
54
64
Max.
4.3.1
4.3.2
4.3.3
4.3.4
Junction to Case1)
RthJC
RthJA
RthJA
RthJA
–
–
–
–
–
–
–
–
K/W
K/W
K/W
K/W
–
2s2p
Junction to Ambient1) 2)
1s0p + 600 mm2
1s0p + 300 mm2
1) Not subject to production test, specified by design.
2) Specified RthJA value is according to JEDEC 2s2p (JESD 51-7) + (JESD 51-5) and JEDEC 1s0p (JESD 51-3) + heatsink
area at natural convection on FR4 board;
Datasheet
8
Rev. 1.0, 2009-11-30
TLE8386EL
Boost Regulator
5
Boost Regulator
5.1
Description
The TLE8386EL boost (step-up) regulator provides a higher output voltage than input voltage. The boost regulator
function is implemented by a pulse width modulated (PWM) current mode controller. The PWM current mode
controller uses the peak current through the external power switch and error in the output current to determine the
appropriate pulse width duty cycle (on time) for constant output current. The current mode controller it provides a
PWM signal to an internal gate driver which then outputs the same PWM signal to external n-channel
enhancement mode metal oxide field effect transistor (MOSFET) power switch. The current mode controller also
has built-in slope compensation to prevent sub-harmonic oscillations which is a characteristic of current mode
controllers operating at high duty cycles (>50% duty). An additional built-in feature is an integrated soft start that
limits the current through the inductor and external power switch during initialization. The soft start function
gradually increases the inductor and switch current over 1 ms (typical) to minimize potential overvoltage at the
output.
OVFB
OV FB
H when
OVFB >1.25V
VRef
=
1.25 V
H when
UV IVCC
COMP
FBH
IVCC <4.0V
=
VRef
IVCC
SWO
4.0 V
NOR
Gate Driver
Supply
x1
=
Current
Comp
EA
_
gmEA
IEA
H when
>
Output Stage
OFF when L
lEA-ISLOPE -ICS > 0
FBL
INV
1
R
S
1
OFF
Q
Q
&
&
when H
L when
R
Gate
VRef
Soft start
Driver
Tj > 175 °C
Q
0.3 V
&
&
Slope Comp
Current
Sense
SWCS
SGND
Oscillator
PWM-FF
I
FREQ/
SYNC
NAND 2
S
t
Q
ICS
&
Clock
Error-FF
Figure 3
Boost Regulator Block Diagram
Datasheet
9
Rev. 1.0, 2009-11-30
TLE8386EL
Boost Regulator
5.2
Electrical Characteristics
1)
VIN = 6V to 40V; 4.5V ≤ VFBH ≤ 40V, 4.5V ≤ VFBL ≤ 40V, Tj = -40 °C to +150 °C, all voltages with respect to ground,
positive current flowing into pin; (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit Conditions
Min.
Typ.
Max.
Boost Regulator:
5.2.1
Feedback Reference Voltage
VREF
0.28
–
0.30
–
0.32
0.15
V
VIN = 19 V;
VREF= VFBH -VFBL
5.2.2
Voltage Line Regulation
Voltage Load Regulation
∆
/∆VIN
VREF
%/V VIN = 6 to 19 V;
VBO= 30 V;
I
BO = 100 mA
Figure 13
5.2.3
5.2.4
∆
/∆IBO
VREF
–
–
5
%/A VIN = 19 V;
VBO = 30V;
I
BO = 100 to 500 mA
Figure 13
Switch Peak Over Current
Threshold
VSWCS
130
150
170
mV
VIN = 6 V
V
V
FBH = VFBL = 5 V
COMP = 3.5V
5.2.5
5.2.6
5.2.7
Maximum Duty Cycle
Maximum Duty Cycle
Soft Start Ramp
DMAX,fixed 90
DMAX,sync 88
93
–
1000
95
–
1500
%
%
µs
Fixed frequency mode
Synchronization mode
tSS
350
V
FB rising from 5% to
95% of VFB, typ.
5.2.8
5.2.9
Feedback Input Current
Switch Current Sense Input
Current
IFBx
ISWCS
-10
10
-50
50
-100
100
µA
µA
V
V
FBH - VFBL = 0.3 V
SWCS = 150 mV
5.2.10 Input Undervoltage Shutdown
5.2.11 Input Voltage Startup
VIN,off
VIN,on
3.75
–
–
–
–
4.75
V
V
VIN decreasing
VIN increasing
Gate Driver for Boost Switch
5.2.12 Gate Driver Peak Sourcing
ISWO,SRC
ISWO,SNK
tR,SWO
–
380
550
30
20
–
–
mA
mA
ns
ns
V
V
V
SWO = 3.5V
SWO = 1.5V
Current1)
5.2.13 Gate Driver Peak Sinking
Current1)
–
–
5.2.14 Gate Driver Output Rise Time
5.2.15 Gate Driver Output Fall Time
5.2.16 Gate Driver Output Voltage1)
–
60
40
5.5
C
L,SWO = 3.3nF;
SWO = 1V to 4V
L,SWO = 3.3nF;
SWO = 1V to 4V
V
tF,SWO
–
C
V
VSWO
4.5
C
L,SWO = 3.3nF;
1) Not subject to production test, specified by design
Datasheet
10
Rev. 1.0, 2009-11-30
TLE8386EL
Oscillator and Synchronization
6
Oscillator and Synchronization
6.1
Description
R_OSC vs. switching frequency
The internal oscillator is used to determine the switching frequency of the boost regulator. The switching frequency
can be selected from 100 kHz to 500 kHz with an external resistor to GND. To set the switching frequency with an
external resistor the following formula can be applied.
1
R FREQ
=
−
(
3.5 × 10 3
[
Ω
])
Ω
[ ]
−12
s
1
( )
141 × 10 [Ω ])× f FREQ [s ]
(
In addition, the oscillator is capable of changing from the frequency set by the external resistor to a synchronized
frequency from an external clock source. If an external clock source is provided on the pin FREQ/SYNC, then the
internal oscillator synchronizes to this external clock frequency and the boost regulator switches at the
synchronized frequency. The synchronization frequency capture range is 250 kHz to 500 kHz.
TLE8386
FREQ
/ SYNC
Oscillator
PWM
Logic
Gate
SWO
Multiplexer
Driver
Clock Frequency
Detector
VCLK
RFREQ
Oscillator_BlkDiag.vsd
Figure 4
Oscillator and Synchronization Block Diagram and Simplified Application Circuit
76<1&ꢁ ꢁꢂꢁꢃꢁI6<1&
W6<1&ꢀ75
W6<1&ꢀ75
W6<1&ꢀ3:+
96<1&
ꢄꢅꢆꢁ9
96<1&ꢀ+
96<1&ꢀ/
ꢇꢅꢆꢁ9
W
2VFLOODWRUB7LPLQJꢅVYJ
Figure 5
Synchronization Timing Diagram
Datasheet
11
Rev. 1.0, 2009-11-30
TLE8386EL
Oscillator and Synchronization
6.2
Electrical Characteristics
VIN = 6V to 40V; 4.5V ≤ VFBH ≤ 40V, 4.5V ≤ VFBL ≤ 40V, Tj = -40 °C to +150 °C, all voltages with respect to ground,
positive current flowing into pin; (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
Max.
Oscillator:
6.2.1
6.2.2
Oscillator Frequency
Oscillator Frequency
Adjustment Range
fFREQ
fFREQ
250
100
300
–
350
500
kHz
kHz
RFREQ = 20kΩ
17% internal tolerance +
external resistor
tolerance
6.2.3
6.2.4
FREQ / SYNC Supply
Current
Frequency Voltage
IFREQ
–
–
-700
1.32
µA
V
V
FREQ = 0 V
VFREQ
1.16
1.24
fFREQ = 100 kHz
Synchronization
6.2.5
6.2.6
6.2.7
6.2.8
Synchronization Frequency fSYNC
250
3.0
–
–
–
–
–
500
–
kHz
V
–
Capture Range
1)
Synchronization Signal
High Logic Level Valid
Synchronization Signal
Low Logic Level Valid
VSYNC,H
VSYNC,L
1)
1)
0.8
–
V
Synchronization Signal
Logic High Pulse Width
tSYNC,PWH 200
ns
1) Synchronization of external PWM ON signal to falling edge
Datasheet
12
Rev. 1.0, 2009-11-30
TLE8386EL
Oscillator and Synchronization
Typical Performance Characteristics of Oscillator
Switching Frequency fSW versus
Frequency Select Resistor to GND RFREQ/SYNC
600
500
400
Tj = 25 °C
300
200
100
0
0
10 20 30 40 50 60 70 80
FREQ/SYNC [kohm]
R
Datasheet
13
Rev. 1.0, 2009-11-30
TLE8386EL
Enable Function
7
Enable Function
7.1
Description
The enable function powers on or off the device. A valid logic low signal on enable pin EN powers off the device
and current consumption is less than 10 µA. A valid logic high enable signal on enable pin EN powers on the
device. The voltage at pin IVCC (internal biasing) stays present for the Power Off Delay Time after the the device
is switched off by the Enable signal.
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Figure 6
Timing Diagram Enable
Datasheet
14
Rev. 1.0, 2009-11-30
TLE8386EL
Enable Function
7.2
Electrical Characteristics
VIN = 6V to 40V; 4.5V ≤ VFBH ≤ 40V, 4.5V ≤ VFBL ≤ 40V, Tj = -40 °C to +150 °C, all voltages with respect to ground,
positive current flowing into pin; (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
Max.
Enable Input:
7.2.1
7.2.2
Enable
VEN,ON
3.0
–
–
–
V
V
–
–
–
V
V
–
Turn On Threshold
Enable
Turn Off Threshold
Enable Hysteresis
Enable
High Input Current
Enable
Low Input Current
Enable Turn Off
Delay Time
Enable Startup Time
VEN,OFF
0.8
7.2.3
7.2.4
VEN,HYS
IEN,H
50
–
200
–
400
30
mV
µA
EN/PWMI = 16.0 V
EN/PWMI = 0.5 V
7.2.5
7.2.6
7.2.7
IEN,L
–
0.1
10
–
1
µA
ms
µs
tEN,OFF,DEL
tEN,START
8
12
–
100
–
Current Consumption
7.2.8
Current Consumption,
Iq_off
Iq_on
–
–
–
–
10
7
µA
V
EN/PWMI = 0.8 V;
Shutdown Mode
Tj ≤ 105C; VIN = 16V
7.2.9
Current Consumption,
mA
V
EN/PWMI ≥ 4.75 V;
Active Mode1)
I
BO = 0 mA;
VIN = 16V
V
SWO = 0% Duty
1) Dependency on switching frequency and gate charge of boost and dimming switch.
Datasheet
15
Rev. 1.0, 2009-11-30
TLE8386EL
Linear Regulator
8
Linear Regulator
8.1
Description
The internal linear voltage regulator supplies the internal gate drivers with a typical voltage of 5 V and current up
to 50 mA. An external output capacitor with low ESR is required on pin IVCC for stability and buffering transient
load currents. During normal operation the external boost MOSFET switche will draw transient currents from the
linear regulator and its output capacitor. Proper sizing of the output capacitor must be considered to supply
sufficient peak current to the gate of the external MOSFET switch. Please refer to application section for
recommendations on sizing the output capacitor. An integrated power-on reset circuit monitors the linear regulator
output voltage and resets the device in case the output voltage falls below the power-on reset threshold. The
power-on reset helps protect the external switches from excessive power dissipation by ensuring the gate drive
voltage is sufficient to enhance the gate of an external logic level n-channel MOSFET.
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Figure 7
Voltage Regulator Block Diagram and Simplified Application Circuit
8.2
Electrical Characteristics
VIN = 6V to 40V; 4.5V ≤ VFBH ≤ 40V, 4.5V ≤ VFBL ≤ 40V, Tj = -40 °C to +150 °C, all voltages with respect to ground,
positive current flowing into pin; (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit Conditions
Min.
Typ.
Max.
8.2.1
8.2.2
Output Voltage
VIVCC
ILIM
4.6
5
5.4
V
6 V ≤ VIN ≤ 45 V
0.1 mA ≤ IIVCC ≤ 50 mA
VIN = 13.5 V
Output Current Limitation
51
90
mA
V
IVCC = 4.5V
8.2.3
8.2.4
8.2.5
8.2.6
Drop out Voltage
Output Capacitor
Output Capacitor ESR
Undervoltage Reset Headroom VIVCC,HDRM 100
VDR
CIVCC
RIVCC,ESR
1400
–
0.5
–
mV
µF
Ω
I
IVCC = 50mA 1)
2)
0.47
f = 10kHz
–
mV
V
IVCC decreasing
V
IVCC - VIVCC,RTH,d
8.2.7
8.2.8
Undervoltage Reset Threshold VIVCC,RTH,d 4.0
–
–
–
4.5
V
V
V
IVCC decreasing
Undervoltage Reset Threshold VIVCC,RTH,i
–
VIVCC increasing
1) Measured when the output voltage VCC has dropped 100 mV from its nominal value.
2) Minimum value given is needed for regulator stability; application might need higher capacitance than the minimum.
Datasheet
16
Rev. 1.0, 2009-11-30
TLE8386EL
Protection and Diagnostic Functions
9
Protection and Diagnostic Functions
9.1
Description
The TLE8386EL has integrated circuits to diagnose and protect against output overvoltage, open load, open
feedback and overtemperature faults. In case any of the four fault conditions occur the Status output ST will output
an active logic low signal to communicate that a fault has occurred. During an overvoltage or open load condition
the gate driver outputs SWO will turn off. Figure 11 illustrates the various open load and open feedback conditions.
In the event of an overtemperature condition the integrated thermal shutdown function turns off the gate drivers
and internal linear voltage regulator. The typical junction shutdown temperature is 175°C. After cooling down the
IC will automatically restart operation. Thermal shutdown is an integrated protection function designed to prevent
immediate IC destruction and is not intended for continuous use in normal operation.
Input
Output
Protection and
Diagnostic Circuit
Output
Overvoltage
Open Load
SWO Gate Driver
Off
OR
Open Feedback
Overtemperature
Linear Regulator
Off
OR
Input
Undervoltage
Pro_Diag_BlckDiag.vsd
Figure 8
Protection and Diagnostic Function Block Diagram
Input
Output
SWO
Sw*
L
Condition
Level*
False
True
ST
H
L
IVCC
Active
Active
Active
Active
Active
Active
Active
Overvoltage
False
True
H
L
Sw*
L
Open Load
False
True
False
True
H
L
H
L
Sw*
L
Sw*
L
Open Feedback
Overtemperature
Shutdown
Pro_Diag_TT .vsd
*Note:
Sw = Switching
False = Condition does not exist
True = Condition does exist
Figure 9
Status Output Truth Table
Datasheet
17
Rev. 1.0, 2009-11-30
TLE8386EL
Protection and Diagnostic Functions
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Figure 10 Open Load and Open Feedback Conditions
Datasheet
18
Rev. 1.0, 2009-11-30
TLE8386EL
Protection and Diagnostic Functions
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Figure 11 Status Output Timing Diagram
Datasheet
19
Rev. 1.0, 2009-11-30
TLE8386EL
Protection and Diagnostic Functions
9.2
Electrical Characteristics
VIN = 6V to 40V; 4.5V ≤ VFBH ≤ 40V, 4.5V ≤ VFBL ≤ 40V, Tj = -40 °C to +150 °C, all voltages with respect to ground,
positive current flowing into pin; (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit Conditions
Min.
Typ.
Max.
Status Output:
9.2.1
9.2.2
9.2.3
9.2.4
Status Output Voltage Low
VST,LOW
IST,MAX
IST,HIGH
tSD
–
2
–
8
–
–
–
10
0.4
–
1
V
IST = 1mA
Status Sink Current Limit
Status Output Current
Status Delay Time
mA
µA
ms
V
V
–
ST = 1V
ST = 5V
12
Temperature Protection:
9.2.5
9.2.6
Over Temperature Shutdown
Over Temperature Shutdown
Hystereses
Tj,SD
Tj,SD,HYST
160
–
175
15
190
–
°C
°C
–
–
Overvoltage Protection:
9.2.7
9.2.8
9.2.9
Output Over Voltage Feedback VOVFB,TH 1.21
1.25
–
1.29
150
10
V
–
Threshold Increasing
Output Over Voltage Feedback VOVFB,HYS 50
mV
µs
µA
Output Voltage
decreasing
Output Voltage
decreasing
Hysteresis
Over Voltage Reaction Time
tOVPRR
IOVFB
2
–
9.2.10 Over Voltage Feedback Input
Current
-1
0.1
1
V
OVFB = 1.25 V
Open Load and Open Feedback Diagnostics
9.2.11 Open Load/Feedback
Threshold
9.2.12 Open Feedback Threshold
VREF,1,3
-100
0.5
–
–
-20
1
mV
V
V
REF = VFBH - VFBL
Open Circuit 1 or 3
VREF,2
V
REF = VFBH - VFBL
Open Circuit 2
Note:Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
Datasheet
20
Rev. 1.0, 2009-11-30
TLE8386EL
Package Outlines
10
Package Outlines
0.35 x 45°
1)
0.1 D 2x
0.1
3.9
+0.06
0.19
0.08
C
C
0.64
0.25
0.65
2)
0.05
0.2
0.25
6
M
M
0.2
D 8x
0.15
C A-B D 14x
D
Bottom View
0.1
3
A
1
7
14
8
1
7
14
8
Exposed
Diepad
B
0.1 A-B 2x
1)
0.1
4.9
Index Marking
1) Does not include plastic or metal protrusion of 0.15 max. per side
2) Does not include dambar protrusion
PG-SSOP-14-1-PO V01
Figure 12 PG-SSOP-14
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant with
government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e
Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
For further package information, please visit our website:
http://www.infineon.com/packages.
Dimensions in mm
Datasheet
21
Rev. 1.0, 2009-11-30
TLE8386EL
Application Information
11
Application Information
Note:The following information is given as a hint for the implementation of the device only and shall not be
regarded as a description or warranty of a certain functionality, condition or quality of the device.
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Figure 13 Boost Voltage Application Circuit (Voltage Source)
Reference
Value
Manufacturer
Part Number
Type
Quantity
Designator
DBO
Schottky, 3 A, 100 VR
Vishay
SS3H10
Diode
1
CBO
CIN
100 uF, 80V
100 uF, 50V
Panasonic
Panasonic
EEVFK1K101Q
EEEFK1H101GP
Capacitor
Capacitor
1
1
CCOMP
CIVCC
IC1
10 nF
1 uF, 6.3V
--
--
--
Capacitor
Capacitor
IC
1
1
1
1
1
1
1
1
2
1
1
1
1
MLCC CCNPZC105KBW X76
EPCOS
Infineon
Infineon
Coilcraft
--
TLE8386EL
IC2
--
XC886
IC
LBO
100 uH
MSS1278T-104ML_
--
Inductor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Transistor
RCOMP
RFB1,RFB3
RFB2
10 kΩ
51 kΩ, 1%
1 kΩ, 1%
20 kΩ, 1%
51 kΩ, 1%
1 kΩ, 1%
50 mΩ, 1%
N-ch, 75 V, 65 mΩ
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Infineon
ERJ3EKF5102V
ERJ3EKF1001V
ERJ3EKF2002V
ERJP06F5102V
ERJ3EKF1001V
ERJB1CFR05U
IPD22N08S2L-50
RFREQ, RST
ROVH
ROVL
RCS
TSW
AppDiagBoostBOM.vsd
Figure 14 Bill of Materials for Boost Voltage Application Circuit
Note:This is a simplified example of an application circuit. The function must be verified in the real application.
Datasheet
22
Rev. 1.0, 2009-11-30
TLE8386EL
Application Information
IBO
DRV
L1
VIN
LBO
DBO
VBO
VBATT
ISW
CBO
CIN
C1
C2
2
3
TSW
SWO
14
IN
RL
SWCS
RCS
TLE8386
ROVH
4
9
SGND
OVFB
Microcontroller
(e.g. XC2000)
VCC
ROVL
RST
10
13
11
8
Input
Output
Output
ST
EN
RFB
6
7
FBH
FBL
FREQ / SYNC
COMP
CCOMP
1
IVCC
RFB_L
CIVCC
RFREQ
RCOMP
GND
12
VisioDocument
Provisional
Parts
Figure 15 Boost Voltage Application Circuit (Current Source)
Datasheet
23
Rev. 1.0, 2009-11-30
TLE8386EL
Application Information
11.1
Further Application Information
In fixed frequency mode where an external resistor configures the switching frequency the minimum boost inductor
is given by the formula inFigure 16.
•
•
•
•
L
MIN = Minimum Inductacne Required During Fixed Frequency Operation
BO = Boost Output Voltage
CS = Current Sense Resistor
FREQ = Switching Frequency
V
R
f
V
BO[V] × RCS[Ω]
-----------------------------------------------------------------
LMIN
≥
106×10–3[V] × fFREQ[Hz]
Figure 16 Minimum Inductance Required During Fixed Frequency Operation
In synchronization mode where an external clock source configures the switching frequency the minimum boost
inductor is given by the formula in Figure 17.
•
•
•
L
SYNC = Minimum Inductacne Required During Synchronization Operation
BO = Boost Output Voltage
V
R
CS = Current Sense Resistor
V
BO[V] × RCS[Ω]
----------------------------------------------------------
LSYNC
≥
106×10–3[V] × 250kHz
Figure 17 Minimum Inductance Required During Synchronization Operation
•
Datasheet
24
Rev. 1.0, 2009-11-30
TLE8386EL
Revision History
12
Revision History
Revision
1.0
Date
2009-11-30
Changes
Initial datasheet
Datasheet
25
Rev. 1.0, 2009-11-30
Edition 2009-11-30
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2010 Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
The information given in this document shall in no event be regarded as a guarantee of conditions or
characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any
information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties
and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights
of any third party.
Information
For further information on technology, delivery terms and conditions and prices, please contact the nearest
Infineon Technologies Office (www.infineon.com).
Warnings
Due to technical requirements, components may contain dangerous substances. For information on the types in
question, please contact the nearest Infineon Technologies Office.
Infineon Technologies components may be used in life-support devices or systems only with the express written
approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure
of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support
devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain
and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may
be endangered.
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