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TPS65142

ACTIVO

Solución de polarización LCD para paneles LCD con controlador WLED de 6 canales

Detalles del producto

Display type LCD unipolar IC integration LCD bias, LED backlight, VCOM Vin (min) (V) 2.3 Vin (max) (V) 6 Applications 13 to 21 inches, 7 to 13 inches Source driver voltage (min) (V) 7 Source driver voltage (max) (V) 16.5 Level shifter/scan driver (Ch) 0 Features Backlight driver Topology Boost Rating Catalog Operating temperature range (°C) -40 to 85
Display type LCD unipolar IC integration LCD bias, LED backlight, VCOM Vin (min) (V) 2.3 Vin (max) (V) 6 Applications 13 to 21 inches, 7 to 13 inches Source driver voltage (min) (V) 7 Source driver voltage (max) (V) 16.5 Level shifter/scan driver (Ch) 0 Features Backlight driver Topology Boost Rating Catalog Operating temperature range (°C) -40 to 85
WQFN (RTG) 32 18 mm² (6 mm × 3 mm)
  • Integrated Bias and Backlight Power
  • 2.3-V to 6-V Input Voltage Range for Bias
    • Up to 16.5 V Boost Converter with 1.8-A
      Switch Current
    • 1.2-MHz / 650-kHz Selectable Switching
      Frequency
    • Internal Compensation
    • Internal Soft-start at Power on
    • Reset Function (XAO Signal)
    • Regulated VGH
    • Regulated VGL
    • Gate Voltage Shaping
    • LCD Discharge Function
  • 150-mA Unity Gain VCOM Buffer
  • 4.5-V to 24-V WLED Backlight Input Range
    • Integrated 1.5-A / 40-V MOSFET
    • Boost Output Tracks WLED Voltage
    • Internal Compensation
    • External Current Setting Input
    • 6 Current-Sink Channels of 25 mA
    • Better than 3% Current Matching
    • Up to 1000:1 PWM Dimming Range
  • Overvoltage Protection
  • Thermal Shutdown
  • Undervoltage Lockout
  • 32-Pin 6 mm × 3 mm QFN Package
  • Integrated Bias and Backlight Power
  • 2.3-V to 6-V Input Voltage Range for Bias
    • Up to 16.5 V Boost Converter with 1.8-A
      Switch Current
    • 1.2-MHz / 650-kHz Selectable Switching
      Frequency
    • Internal Compensation
    • Internal Soft-start at Power on
    • Reset Function (XAO Signal)
    • Regulated VGH
    • Regulated VGL
    • Gate Voltage Shaping
    • LCD Discharge Function
  • 150-mA Unity Gain VCOM Buffer
  • 4.5-V to 24-V WLED Backlight Input Range
    • Integrated 1.5-A / 40-V MOSFET
    • Boost Output Tracks WLED Voltage
    • Internal Compensation
    • External Current Setting Input
    • 6 Current-Sink Channels of 25 mA
    • Better than 3% Current Matching
    • Up to 1000:1 PWM Dimming Range
  • Overvoltage Protection
  • Thermal Shutdown
  • Undervoltage Lockout
  • 32-Pin 6 mm × 3 mm QFN Package

The TPS65142 provides a compact solution to the bias power and the WLED backlight in note-pc TFT-LCD panels. The device features a boost converter, a positive charge pump regulator, and a negative charge pump regulator to power the source drivers and the gate drivers. A 150 mA unity-gain high-speed buffer is offered to drive the VCOM plane. Gate voltage shaping and the LCD discharge function are offered to improve the image quality. A reset function allows a proper reset of the TCON at the power on. The TPS65142 also offers the complete solution to driver up to 6 chains of WLEDs with 1000:1 ratio PWM dimming.

All features are integrated in a compact 6 × 3 mm2 Thin QFN package.

The TPS65142 provides a compact solution to the bias power and the WLED backlight in note-pc TFT-LCD panels. The device features a boost converter, a positive charge pump regulator, and a negative charge pump regulator to power the source drivers and the gate drivers. A 150 mA unity-gain high-speed buffer is offered to drive the VCOM plane. Gate voltage shaping and the LCD discharge function are offered to improve the image quality. A reset function allows a proper reset of the TCON at the power on. The TPS65142 also offers the complete solution to driver up to 6 chains of WLEDs with 1000:1 ratio PWM dimming.

All features are integrated in a compact 6 × 3 mm2 Thin QFN package.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TPS65142 LCD Bias Power Integrated with WLED Backlight Drivers datasheet (Rev. B) PDF | HTML 14/08/2015
Nota sobre la aplicación Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 28/10/2022
Nota sobre la aplicación Understanding Undervoltage Lockout in Power Devices (Rev. A) 19/09/2018
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018
Nota sobre la aplicación Generation of a VCOM buffer input using PWM signal 21/12/2015
Nota sobre la aplicación TPS65142 Loop Compensation Design Consideration 2/07/2013

Diseño y desarrollo

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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WQFN (RTG) 32 Ultra Librarian

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