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TPS65165 Compact LCD Bias IC With High Speed Amplifiers for TV and Monitor TFT-LCD Panels TI
Texas Instruments TI
TPS65165 Datasheet PDF : 26 Pages
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www.ti.com
TPS65165
SLVS723 – DECEMBER 2006
Compact LCD Bias IC With High Speed Amplifiers for TV and Monitor TFT-LCD Panels
FEATURES
2.5 V to 6.0 V Input Voltage Range
Vs Output Voltage up to 18 V
– 1%-Accurate Boost Converter With 4.5 A
Switch Current
– 600 kHz Fixed Frequency PWM Operation
– Overvoltage Protection
– Adjustable Softstart
Regulated Positive Charge Pump Converter
VGH
Integrated Gate Voltage Shaping of VGH
Regulated Negative Charge-Pump Driver VGL
Adjustable Sequencing for Vs and VGH
3 Integrated High-Speed Operational
Amplifiers
– 50 MHz 3 db Bandwidth
– Slew Rate 45 V/µs
– 215 mA Short Circuit Current
High Voltage Test Mode (HVS)
Thermal Shutdown
40-Pin 5×5-mm QFN Package
APPLICATIONS
LCD Monitor
LCD TV Panel
DESCRIPTION
The TPS65165 is a Compact LCD Bias IC with 3 high-speed operational amplifiers for gamma correction and/or
VCOM supply. The device generates all 3 voltage rails for TFT-LCD displays (Vs, VGL and VGH). The device
incorporates a high-voltage switch that can be controlled by a logic signal from the timing controller (TCON) to
provide the gate-voltage modulation for VGH. If this function is not required, the CTRL pin can be tied high.
Vin
2.5V to 6.0V
L1
10uH
D1
C1 C2 C3
22 mF 22 mF 22 mF
C4
1 mF
C10
2.2 nF
R3
10 kW
COMP
C2P
C11
330 nF C2N
HVS
CTRL
DRN
R10
1kW
POS1
NEG1
OUT1
C5 C6 C7
22 mF 22 mF 22 mF
Boost Converter
D
S
Positive Charge
Pump
x2 or x3
High Voltage
Switch Control
1
POS2
3
NEG2
2
OUT2
C17 C18 C19
22 nF 22 nF 22 nF
C8
R1
1 mF 470 kW
Vs
15V/1.0A
C9
100 pF
R2
39 kW
FB
RHVS
R4
220 kW
FBP
POUT
C12
330nF
C1P
C1N
C13
1 mF
C14
100 pF
PGND
PGND
VGH
DRVN
FBN
REF
C20
220 nF
C15
D2
330 nF
D3
R7
160 kW
R8
39 kW
R5
300
kW
R6
16 kW
VGH
27.5V/50mA
VGL
-5V/50mA
C16
330 nF
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 © 2006, Texas Instruments Incorporated
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