TPS65162 Datasheet, PDF (1/36 Pages) Texas Instruments – Compact LCD Bias IC With High Speed Amplifiers for TV-LCD Panels

TPS65162
www.ti.com
SLVS771 – MAY 2007
Compact LCD Bias IC With High Speed Amplifiers for TV-LCD Panels
FEATURES
• 8-V to 14.4-V Input Voltage Range
• 500 kHz / 750 kHz Fixed Switching Frequency
• Boost Output Voltage up to 19 V
– 1%-Accurate Boost With 2.8-A Switch
Current Overvoltage Protection
• Input-to-Output Isolation Switch for Vs
Short-Circuit protection for Boost
• 2.5-A Step-Down Converter
• Regulated Positive Charge-Pump Driver VGH
• Regulated Negative Charge-Pump Driver VGL
• Gate Voltage Shaping for VGH
• Soft Start for all Converters
• Two Integrated High-Speed Opamps
– 50-MHz, 3-dB Bandwidth
– Slew Rate 55 V / µs
– 215-mA Short-Circuit Current
• 48 Pin 7x7 mm QFN Package
APPLICATIONS
• LCD TV
• LCD Monitor
DESCRIPTION
The TPS65162 is a compact LCD bias IC with two high-speed operational amplifiers for the V_com supply. The
high current capability of the device is ideal for large LCD-monitor and LCD-TV applications.
Vin
8 V to 14 V
L1
10 mH
C1
C2
22 mF 22 mF
D1
C5
10 mF
C11 C12
1 mF 1 mF
R1
C7
39 kW 220 pF
C8
22 mF
C9
22 mF
Vs
15 V/1.5 A
C10
22 mF
C4
22 mF
EN1
EN2
FREQ
C11
1 mF
C12
22 nF
C13
22 nF
Enable Gate
Voltage shaping
VFLK
VGL
-5V/50mA
C7
470 nF
C14
100 pF
D4D5
R3
200 kW
C18
470 nF
R4
51 kW
C19
220 nF
VIN
SS
VC
CE
VDPM
VFLK
DRVN
FBN
REF
AGND
Boost
Converter
D
S
Gate Voltage
Shaping
1
2
FB
DRVP
VGH
FBP
VGHM
RE
VDD
CBOOT
Buck
Converter
SWB
SWB
FBB
DLY 1
DLY 2
GND
R2
3.6 kW
D2D3
C16
470 nF
R5
62 kW
C17
470 nF
R10
1 KW
R6
3.3 kW
Vs
R7
10 KW
VGH
25 V/50 mA
C20
100 nF
R8
1.5 KW
L2
10 mH
D5
R11 C21
2.4 kW 470 pF
C22
22 mF
Vlogic
3.3 V/2.5 A
C23
22 mF
C24
10 nF
C25
22 nF
R12
1.5 kW
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.
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 © 2007, Texas Instruments Incorporated