TPS65161
TPS65161A, TPS65161B
www.ti.com .................................................................................................................................................... SLVS617C–APRIL 2006–REVISED OCTOBER 2008
BIAS POWER SUPPLY FOR TV AND MONITOR TFT LCD PANELS
1
FEATURES
•
•
•
•
•
Internal and Adjustable Soft Start
Short-Circuit Protection
2
•
8-V to 14.7-V Input Voltage Range
•
•
•
•
VS 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
Overvoltage Protection
Thermal Shutdown
Available in HTSSOP-28 Package
TPS65161B has a 3.7-A Switch Current Limit
and 100-mA Charge Pump Output Current
APPLICATIONS
•
TFT LCD Displays for Monitor and LCD TV
•
•
•
•
•
•
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
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
D1
SL22
L1
10 μH
S
18 V/1.3 A
V
IN
12 V
C1
2 * 22 μF
C4
22 pF
R1
825 kΩ
TPS65161
C2
3 * 22 μF
C3
1 μF
4
8
12
20
21
22
SW
SW
FB
SUP
5
FREQ
VINB
VINB
1
R2
56 kΩ
C15
470 nF
3
OS
GND
GD
D4
23
27
AVIN
EN1
EN2
DRN
FBN
C16
1 μF
16
9
GD
V
D5
GL
−5 V/50 mA
V
C6
0.47 μF
C5 0.47 μF
GH
32 V/50 mA
10
14
17
18
19
15
DRP
FBP
D2
11
13
24
6
R5
560 kΩ
C13
0.47 μF
BOOT
D3
SWB
NC
FBB
REF
R3
620 kΩ
C7
0.47 μF
PGND
PGND
7
R6
22 kΩ
28
25
2
COMP
DLY2
SS
DLY1
Cb
100 nF
26
R4
150 kΩ
V
(LOGIC)
L2
15 μH
C17
22 nF
3.3 V/2.3 A
C11
10 nF
C9
22 nF
C10
10 nF
C8
220 nF
D6
SL22
C14
10 nF
C12
2 * 22 μF
R7
2 kΩ
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.
2
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 © 2006–2008, Texas Instruments Incorporated