TPS65161 Datasheet, PDF (1/28 Pages) Texas Instruments – BIAS POWER SUPPLY FOR TV AND MONITOR TFT LCD PANELS

TPS65161
www.ti.com
SLVS617 – APRIL 2006
BIAS POWER SUPPLY FOR TV AND MONITOR TFT LCD PANELS
FEATURES
• 8-V to 14-V Input Voltage Range
• V_S Output Voltage Range up to 19 V
• 1% Accurate Boost Converter With 2.8-A
Switch Current
• 1.5% accurate 2.3-A Step-Down Converter
• 500-kHz/750-kHz Fixed Switching Frequency
• Negative Charge Pump Driver for VGL
• Positive Charge Pump Driver for VGH
• Adjustable Sequencing for VGL, VGH
• Gate Drive Signal to Drive External MOSFET
• Internal and Adjustable Soft Start
• Short-Circuit Protection
• Overvoltage Protection
• Thermal Shutdown
• Available in TSSOP-28 Package
APPLICATIONS
• TFT LCD Displays for Monitor and LCD TV
DESCRIPTION
The TPS65161 offers a compact power supply solution to provide all four voltages required by thin-film transistor
(TFT) LCD panel. With its high current capabilities, the device is ideal for large screen monitor panels and LCD
TV applications.
TYPICAL APPLICATION
Vin
12 V
C1
2 * 22 μF
C3
1 μF
VGL
−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
Vs
18 V/1.3 A
TPS65161
8
12
SUP
FREQ
20 _VINB
21
22
VINB
16 ^AVIN
9 ^EN1
EN2
11
13 ^DRN
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
VGH
32 V/50 mA
C13
0.47 μF
C17
22 nF
Cb
100 nF
L2
15 μH
R6
22 kΩ
Vlogic
3.3 V/2.3 A
D6
SL22
R7
2 kΩ
C14
10 nF
C12
2 * 22 μF
R8
1.2 kΩ
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.
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, Texas Instruments Incorporated