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Product details

Parameters

Display type LCD Unipolar IC integration LCD Bias, VCOM Vin (Min) (V) 2.7 Vin (Max) (V) 5.8 Source driver voltage (Min) (V) 5 Source driver voltage (Max) (V) 15 Level shifter/scan driver (ch) 0 Special function VCOM/OpAmp Topology Rating Catalog open-in-new Find other LCD & OLED display power & drivers

Package | Pins | Size

HTSSOP (PWP) 24 34 mm² 4.4 x 7.8 VQFN (RGE) 24 16 mm² 4 x 4 open-in-new Find other LCD & OLED display power & drivers

Features

  • 2.7-V to 5.8-V Input Voltage Range
  • 1.6-MHz Fixed Switching Frequency
  • 3 Independent Adjustable Outputs
  • Boost Converter Output Voltage VO1 of up to 15 V With < 1% Output Voltage Accuracy
  • Negative Regulated Charge Pump VO2
  • Positive Charge Pump VO3
  • Integrated VCOM Buffer
  • Virtual Synchronous Converter Technology in Boost Converter
  • Auxiliary 3.3-V Linear Regulator Controller
  • Internal Soft Start
  • Internal Power-On Sequencing
  • Fault Detection of all Outputs (TPS65100/05)
  • No Fault Detection (TPS65101)
  • Thermal Shutdown
  • Available in TSSOP-24 and VQFN-24 PowerPAD™ Packages
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Description

The TPS6510x series offers a compact and small power supply solution that provides all three voltages required by thin film transistor (TFT) LCD displays. The auxiliary linear regulator controller can be used to generate a 3.3-V logic power rail for systems powered by a 5-V supply rail only.

The main output VO1, is a 1.6-MHz, fixed-frequency PWM boost converter providing the source drive voltage for the LCD display. The device is available in two versions with different internal switch current limits to allow the use of a smaller external inductor when lower output power is required. The TPS65100/01 has a typical switch current limit of 2.3 A, and the TPS65105 has a typical switch current limit of 1.37 A. A fully integrated adjustable charge pump doubler/tripler provides the positive LCD gate drive voltage. An externally adjustable negative charge pump provides the negative gate drive voltage. Due to the high 1.6-MHz switching frequency of the charge pumps, inexpensive and small 220-nF capacitors can be used.

The TPS6510x series has an integrated VCOM buffer to power the LCD backplane. For LCD panels powered by 5 V only, the TPS6510x series has a linear regulator controller using an external transistor to provide a regulated 3.3-V output for the digital circuits. For maximum safety, the TPS65100/05 goes into shutdown as soon as one of the outputs is out of regulation. The device can be enabled again by toggling the input or the enable (EN) pin to GND. The TPS65101 does not enter shutdown when one of the outputs is below its power good threshold.

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Similar but not functionally equivalent to the compared device:
TPS65150 ACTIVE Universal, compact LCD bias Power Supply with integrated VCOM Buffer This product has the same features except there is no LDO for Vlogic.

Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TPS6510x Triple Output LCD Supply With Linear Regulator and VCOM Buffer datasheet (Rev. D) Aug. 31, 2016
Application notes Understanding Undervoltage Lockout in Power Devices (Rev. A) Sep. 19, 2018
Application notes Basic calculation of an inverting buck-boost power stage (Rev. A) Aug. 28, 2017
Application notes How to Estimate the Output Voltage Range of the Charge Pumps in the TPS6510x Aug. 08, 2017
Application notes Load Disconnect for the TPS6510x (Rev. A) Feb. 08, 2017
Application notes How to Compensate the TPS6510x and the TPS6514x Aug. 30, 2016
Application notes Generation of a VCOM buffer input using PWM signal Dec. 21, 2015
Application notes Basic Calculation of a Boost Converter's Power Stage (Rev. C) Jan. 08, 2014
Technical articles Don’t underestimate the power of an LDO Oct. 19, 2013
Technical articles How to optimize your DSP power budget Oct. 03, 2013
Technical articles "X" Marks the spot - 7 Treasures in a pirate engineer's treasure chest Sep. 19, 2013
Technical articles Power Tips: How to be discrete Sep. 17, 2013
Application notes Minimizing Ringing at the Switch Node of a Boost Converter Sep. 15, 2006

Design & development

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HTSSOP (PWP) 24 View options
VQFN (RGE) 24 View options

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