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.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | Compact LCD Bias IC With High Speed Amplifiers for TV-LCD Panels datasheet (Rev. C) | 2012/7/3 | |||
| 應用說明 | Basic Calculation of a Boost Converter's Power Stage (Rev. D) | PDF | HTML | 2022/10/28 | |||
| 應用說明 | Understanding Undervoltage Lockout in Power Devices (Rev. A) | 2018/9/19 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Generation of a VCOM buffer input using PWM signal | 2015/12/21 | ||||
| 應用說明 | Basic Calculation of a Buck Converter's Power Stage (Rev. B) | PDF | HTML | 2015/8/17 | |||
| 使用指南 | TPS65162EVM-278 (Rev. A) | 2009/10/5 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGZ) | 48 | Ultra Librarian |