The TPS65162 is a compact LCD bias IC with two high-speed operational amplifiers for the Vcom supply. The high current capability of the device is ideal for large LCD-monitor and LCD-TV applications.
The TPS65162 generates all four voltage rails for a TFT LCD (Vs, Vlogic, VGH and VGL) and includes two op-amps to generate the VCOM supply rail. An input-to-output isolation switch is integrated into the device, providing short-circuit protection for the boost converter. A current-limit function is implemented in the input-to-output isolation switch to allow soft turn-on during start-up. The device also features gate voltage shaping for improved TFT-LCD picture quality. The device consists of a boost converter to provide the source voltage Vs, and a step-down converter to provide the logic voltage for the system. A positive and a negative charge-pump driver provide adjustable regulated output voltages VGH and VGL to bias the TFT. Both boost and buck converter, as well as the charge-pump drivers, operate with a fixed switching frequency of 500 kHz or 750 kHz, selectable by the FREQ pin. The device includes adjustable power-on sequencing. The safety features of the device are overvoltage protection for boost converter, short-circuit protection for Vs, Vlogic and VGH, and thermal shutdown.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | Compact LCD Bias IC With High Speed Amplifiers for TV-LCD Panels datasheet (Rev. C) | 03 Jul 2012 | |
| Application note | 스트컨버터의 전력계 기본 계산 (Rev. D) | PDF | HTML | 21 Nov 2022 | |
| Application note | Basic Calculation of a Boost Converter's Power Stage (Rev. D) | PDF | HTML | 28 Oct 2022 | |
| Application note | Understanding Undervoltage Lockout in Power Devices (Rev. A) | 19 Sep 2018 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| Application note | Generation of a VCOM buffer input using PWM signal | 21 Dec 2015 | ||
| Application note | Basic Calculation of a Buck Converter's Power Stage (Rev. B) | 17 Aug 2015 | ||
| User guide | TPS65162EVM-278 (Rev. A) | 05 Oct 2009 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | Download |
|---|---|---|
| VQFN (RGZ) | 48 | View options |
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