TPS65162
- 8-V to 14.7-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
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.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | Compact LCD Bias IC With High Speed Amplifiers for TV-LCD Panels datasheet (Rev. C) | 2012. 7. 3 | ||
| 애플리케이션 노트 | 스트컨버터의 전력계 기본 계산 (Rev. D) | PDF | HTML | Download English Version (Rev.D) | 2022. 11. 21 | |
| 애플리케이션 노트 | Understanding Undervoltage Lockout in Power Devices (Rev. A) | 2018. 9. 19 | |||
| 선택 가이드 | Power Management Guide 2018 (Rev. R) | 2018. 6. 25 | |||
| 애플리케이션 노트 | Generation of a VCOM buffer input using PWM signal | 2015. 12. 21 | |||
| 애플리케이션 노트 | Basic Calculation of a Buck Converter's Power Stage (Rev. B) | PDF | HTML | 2015. 8. 17 | ||
| 사용 설명서 | TPS65162EVM-278 (Rev. A) | 2009. 10. 5 |
설계 및 개발
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RGZ) | 48 | Ultra Librarian |