Product details

Display type LCD unipolar IC integration Gamma buffer, LCD bias, VCOM Vin (Min) (V) 2.6 Vin (Max) (V) 6 Source driver voltage (Min) (V) 6 Source driver voltage (Max) (V) 9.1 Level shifter/scan driver (ch) 0 Features Adjustable sequencing, GPM or GVS, Gamma buffer, I2C interface, Output discharge, Reset generator, Temperature sensor or compensation, VCOM or op amp Topology Boost, Buck Rating Catalog
Display type LCD unipolar IC integration Gamma buffer, LCD bias, VCOM Vin (Min) (V) 2.6 Vin (Max) (V) 6 Source driver voltage (Min) (V) 6 Source driver voltage (Max) (V) 9.1 Level shifter/scan driver (ch) 0 Features Adjustable sequencing, GPM or GVS, Gamma buffer, I2C interface, Output discharge, Reset generator, Temperature sensor or compensation, VCOM or op amp Topology Boost, Buck Rating Catalog
DSBGA (YFF) 56 9 mm² 3.156 x 3.488
  • 2.6 V to 6 V Input Voltage Range
  • Synchronous Boost Converter (AVDD)
  • Non-Synchronous Boost Converter with Temperature
    Compensation (VGH)
  • Synchronous Buck Converter (VCORE)
  • Synchronous Buck Converter (VIO1)
  • Low Dropout Linear Regulator (VIO2)
  • Programmable VCOM Calibrator with
    Two Integrated Buffer Amplifiers
  • Gate Voltage Shaping
  • Panel Discharge Signal (XAO)
  • System Reset Signal (RST)
  • 14-Channel, 10-Bit Programmable Gamma Voltage Correction
  • On-Chip EEPROM with Write Protect
  • I2C™ Interface
  • Thermal Shutdown
  • Supports GIP and Non-GIP Displays
  • 56-Ball, 3.16 mm × 3.45 mm 0.4 mm Pitch DSBGA
  • 2.6 V to 6 V Input Voltage Range
  • Synchronous Boost Converter (AVDD)
  • Non-Synchronous Boost Converter with Temperature
    Compensation (VGH)
  • Synchronous Buck Converter (VCORE)
  • Synchronous Buck Converter (VIO1)
  • Low Dropout Linear Regulator (VIO2)
  • Programmable VCOM Calibrator with
    Two Integrated Buffer Amplifiers
  • Gate Voltage Shaping
  • Panel Discharge Signal (XAO)
  • System Reset Signal (RST)
  • 14-Channel, 10-Bit Programmable Gamma Voltage Correction
  • On-Chip EEPROM with Write Protect
  • I2C™ Interface
  • Thermal Shutdown
  • Supports GIP and Non-GIP Displays
  • 56-Ball, 3.16 mm × 3.45 mm 0.4 mm Pitch DSBGA

The TPS65642 is a compact LCD bias solution primarily intended for use in Notebook and Tablet PCs. The device comprises two boost converters to supply the LCD panel’s source driver and gate driver/level shifter; two buck converters and an LDO linear regulator to supply the system’s logic voltages; a programmable VCOM generator with two high-speed amplifiers; 14-channel gamma voltage correction; and a gate voltage shaping function.

The TPS65642 is a compact LCD bias solution primarily intended for use in Notebook and Tablet PCs. The device comprises two boost converters to supply the LCD panel’s source driver and gate driver/level shifter; two buck converters and an LDO linear regulator to supply the system’s logic voltages; a programmable VCOM generator with two high-speed amplifiers; 14-channel gamma voltage correction; and a gate voltage shaping function.

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Similar functionality to the compared device.
TPS65640 ACTIVE LCD Bias with Digital VCOM Buffer for Notebook PCs and Tablet PCs This product has no integrated gamma buffer, and has two OpAmps.
TPS65642A ACTIVE LCD bias with integrated gamma reference for notebook PCs, tablet PCs and monitors This product has an integrated AVDD range from 7V to 10.1V (instead of 6.0 to 9.1V) and has Vio and Vcore in sync.

Technical documentation

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Type Title Date
* Data sheet LCD Bias with Integrated Gamma Reference for Notebook PCs, Tablet PCs datasheet 19 Jul 2013
Application note Understanding Undervoltage Lockout in Power Devices (Rev. A) 19 Sep 2018
Technical article Display Power: Why TFT LCD needs Temperature Compensation 26 Jul 2017
Application note How to Generate a Regulated VGL Supply Using the TPS65642A 08 Dec 2016
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 17 Aug 2015
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. C) 08 Jan 2014
Application note Minimizing Ringing at the Switch Node of a Boost Converter 15 Sep 2006

Design & development

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TPS65642DESIGN-CALC TPS65642 Temperature Compensation Calculations

TPS65642 Temperature Compensation Calculation Tool.
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TPS65642 Temperature Compensation Calculations (Rev. A) TPS65642 Temperature Compensation Calculations (Rev. A)

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DSBGA (YFF) 56 View options

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