TPS65162

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4 通道 LCD 偏置，具有輸入到輸出集成隔離開關、2 個運算放大器和 GPM

產(chǎn)品詳情

Display type LCD unipolar IC integration LCD bias Vin (min) (V) 8 Vin (max) (V) 14.7 Applications 13 to 21 inches, 21 inches and above Source driver voltage (max) (V) 19 Level shifter/scan driver (Ch) 0 V_POS (max) (V) 34 V_NEG (max) (V) -2 Features VCOM or op amp Topology Boost, Buck Rating Catalog Operating temperature range (°C) -40 to 85
Display type LCD unipolar IC integration LCD bias Vin (min) (V) 8 Vin (max) (V) 14.7 Applications 13 to 21 inches, 21 inches and above Source driver voltage (max) (V) 19 Level shifter/scan driver (Ch) 0 V_POS (max) (V) 34 V_NEG (max) (V) -2 Features VCOM or op amp Topology Boost, Buck Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGZ) 48 49 mm2 7 x 7
  • 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
  • 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.

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.
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類型 標題 下載最新的英語版本 日期
* 數(shù)據(jù)表 Compact LCD Bias IC With High Speed Amplifiers for TV-LCD Panels 數(shù)據(jù)表 (Rev. C) 2012年 7月 3日
應用手冊 Basic Calculation of a Boost Converter's Power Stage... (Rev. D) PDF | HTML 2022年 11月 21日
應用手冊 升壓轉換器功率級的基本計算 (Rev. D) PDF | HTML 英語版 (Rev.D) PDF | HTML 2022年 11月 11日
應用手冊 Understanding Undervoltage Lockout in Power Devices (Rev. A) 2018年 9月 19日
選擇指南 電源管理指南 2018 (Rev. K) 2018年 7月 31日
選擇指南 電源管理指南 2018 (Rev. R) 2018年 6月 25日
應用手冊 Generation of a VCOM buffer input using PWM signal 2015年 12月 21日
應用手冊 Basic Calculation of a Buck Converter's Power Stage (Rev. B) 2015年 8月 17日
用戶指南 TPS65162EVM-278 (Rev. A) 2009年 10月 5日

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