TPS65142

ACTIVE

LCD Bias Solution For LCD Panels with 6ch WLED Driver

Product details

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 x 3
  • 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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TPS65154 ACTIVE LCD Bias IC with Integrated WLED Driver This product adds a programmable Vcom calibrator and LDO for Vcc, with an LED current of 30mA instead of 25mA.

Technical documentation

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Type Title Date
* Data sheet TPS65142 LCD Bias Power Integrated with WLED Backlight Drivers datasheet (Rev. B) PDF | HTML 14 Aug 2015
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 TPS65142 Loop Compensation Design Consideration 02 Jul 2013

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