Product Summary

The TPS65165 is a Compact LCD Bias IC with 3 high speed operational amplifiers for gamma correction and/or VCOM supply. The TPS65165 generates all 3 voltage rails for TFT-LCD displays (Vs, VGL and VGH). The TPS65165 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. The TPS65165 also features a high-voltage stress test, where the output voltage of VGH is typically set to 30 V, and the output voltage of Vs is programmable to any higher voltage. The high-voltage stress test is enabled by pulling the HVS pin high. Adjustable sequencing is implemented, and can be programmed by selecting the capacitor values connected to ADLY and GDLY. The device consists of a boost converter to provide the source voltage Vs operating at a fixed switching frequency of 600 kHz. A fully integrated positive charge pump, switching automatically between doubler and tripler mode provides an adjustable regulated TFT gate on voltage VGH. A negative charge pump driver provides adjustable regulated output voltage VGL. To minimize external components the charge pumps for VGH and VGL operate at a fixed switching frequency of 1.2 MHz. The TPS65165 includes safety features like overvoltage protection of the boost converter, short circuit protection of VGH and VGL as well as thermal shutdown. The applications of the TPS65165 include LCD Monitor, LCD TV Panel.

Parametrics

TPS65165 absolute maximum ratings: (1)Input voltage range VIN: -0.3 to 7.0V; (2)Voltage range at EN, CTRL, HVS: - 0.3V to 7.0V; (3)VI Voltage on pin SUP: 22 V; (4)VI Voltage on pin SW: 25 V; (5)VI Voltage on pin POUT, VGH, DRN: 32V; (6)TJ Operating junction temperature range: -40 to 150 ℃; (7)TA Operating ambient temperature range: -40 to 85 ℃; (8)Tstg Storage temperature range: -65 to 150℃.

Features

TPS65165 features: (1)2.5V to 6.0V Input Voltage Range; (2)Vs Output Voltage up to 18V; (3)1%-Accurate Boost Converter With 4.5A Switch Current; (4)600 kHz Fixed Frequency PWM Operation; (5)Overvoltage Protection; (6)Adjustable Softstart; (7)Regulated Positive Charge Pump Converter VGH; (8)Integrated Gate Voltage Shaping of VGH; (9)Regulated Negative Charge-Pump Driver VGL; (10)Adjustable Sequencing for Vs and VGH; (11)3 Integrated High-Speed Operational; (12)High Voltage Test Mode (HVS); (13)Thermal Shutdown; (14)40-Pin 5×5-mm QFN Package.

Diagrams

TPS65165 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
TPS65165EVM-233
TPS65165EVM-233

Texas Instruments

Power Management IC Development Tools TPS65165 Evaluation Module

Data Sheet

0-1: $33.17
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TPS65165RSBR

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LCD Gamma Buffers Compact LCD Bias IC

Data Sheet

0-2225: $1.46
2225-3000: $1.40
TPS65165RSBRG4
TPS65165RSBRG4

Texas Instruments

LCD Gamma Buffers Compact LCD Bias IC

Data Sheet

0-2225: $1.46
2225-3000: $1.40