TPS65161_08 Datasheet, PDF (1/31 Pages) Texas Instruments – BIAS POWER SUPPLY FOR TV AND MONITOR TFT LCD PANELS

TPS65161
TPS65161A, TPS65161B
www.ti.com .................................................................................................................................................... SLVS617C – APRIL 2006 – REVISED OCTOBER 2008
BIAS POWER SUPPLY FOR TV AND MONITOR TFT LCD PANELS
FEATURES
1
•2 8-V to 14.7-V Input Voltage Range
• V_S Output Voltage Range up to 19 V
• TPS65161 has a 2.8-A Switch Current Limit
• TPS65161A has a 3.7-A Switch Current Limit
• TPS65161B has a 3.7-A Switch Current Limit
and 100-mA Charge Pump Output Current
• 1.5% Accurate 2.3-A Step-Down Converter
• 500-kHz/750-kHz Fixed Switching Frequency
• Negative Charge Pump Driver for V_GL
• Positive Charge Pump Driver for V_GH
• Adjustable Sequencing for V_GL, V_GH
• Gate Drive Signal to Drive External MOSFET
• Internal and Adjustable Soft Start
• Short-Circuit Protection
• Overvoltage Protection
• Thermal Shutdown
• Available in HTSSOP-28 Package
APPLICATIONS
• TFT LCD Displays for Monitor and LCD TV
DESCRIPTION
The TPS65161 family offers a compact power supply solution to provide all four voltages required by thin-film
transistor (TFT) LCD panels. With their high current capabilities, the devices are ideal for large screen monitor
panels and LCD TV applications.
TYPICAL APPLICATION
V_IN
12 V
C1
2 * 22 μF
C3
1 μF
V_GL
−5 V/50 mA
C16
1 μF
D2
C6
0.47 μF
C7
0.47 μF
D3
R3
620 kΩ
R4
150 kΩ
C8
220 nF
C9
22 nF
L1
10 μH
D1
SL22
V_S
18 V/1.3 A
TPS65161
8
12
SUP
FREQ
20 _VINB
21
22
VINB
16 ^AVIN
9 ^EN1
EN2
11
DRN
13
FBN
24
6 ^REF
7 ^PGND
28 ^PGND
25
SS
DLY1
4
SW
SW
5
FB ¹
OS ³
GND ²³
GD ²⁷
DRP ¹⁰
FBP ¹⁴
BOOT
17
18
SWB ₁₉
NC
FBB
15
COMP ²
DLY2 ²⁶
C10
10 nF
C11
10 nF
C4
22 pF
R1
825 kΩ
C2
3 * 22 μF
C15
470 nF
R2
56 kΩ
D4
GD
D5
C5 0.47 μF
R5
560 kΩ
V_GH
32 V/50 mA
C13
0.47 μF
C17
22 nF
Cb
100 nF
L2
15 μH
R6
22 kΩ
V_(LOGIC)
3.3 V/2.3 A
D6
SL22
R7
2 kΩ
C14
10 nF
C12
2 * 22 μF
R8
1.2 kΩ
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2008, Texas Instruments Incorporated