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TPS65105

ACTIVE

4-CH LCD Bias w/ Fully Int. Pos. Charge Pump, 3.3V LDO Contr., 0.96A Min. Boost Ilim, Fault & VCOM

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Data sheet

TPS65105

ACTIVE
Data sheet Order now

Product details

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 V_POS (Max) (V) 30 V_NEG (Max) (V) -2 Features VCOM or op amp Topology Boost Rating Catalog
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 V_POS (Max) (V) 30 V_NEG (Max) (V) -2 Features VCOM or op amp Topology Boost Rating Catalog
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HTSSOP (PWP) 24 34 mm² 4.4 x 7.8 VQFN (RGE) 24 16 mm² 4 x 4
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  • 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
  • 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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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.

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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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

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Type Title Date
* Data sheet TPS6510x Triple Output LCD Supply With Linear Regulator and VCOM Buffer datasheet (Rev. D) 31 Aug 2016
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
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 Basic calculation of an inverting buck-boost power stage (Rev. A) 28 Aug 2017
Application note How to Estimate the Output Voltage Range of the Charge Pumps in the TPS6510x 08 Aug 2017
Application note Load Disconnect for the TPS6510x (Rev. A) 08 Feb 2017
Application note How to Compensate the TPS6510x and the TPS6514x 30 Aug 2016
Application note Generation of a VCOM buffer input using PWM signal 21 Dec 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
Application note Customizing your TPS6510x/TPS6514X 22 Jun 2004

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS65100EVM-030 — TPS65100 Evaluation Module

The TPS65100EVM-030 is an evaluation tool for the TPS6510x multi-channel power supply for TFT LCD displays. The evaluation module can accept input voltages in range of 2.7V to 5.8V and supplies 10V, -5V and 23V to power a TFT display. Other voltages can be adjusted by changing resistor feedback (...)
document-pdfAcrobat User guide
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Evaluation board

TPS65140EVM-031 — TPS65140 Evaluation Module

The TPS65140EVM-031 is an evaluation tool for the TPS6514x multi-channel power supply for TFT LCD displays. The evaluation module can accept input voltages in range of 2.7V to 5.8V and supplies 10V, -5V and 23V to power a TFT display. Other voltages can be adjusted by changing resistor feedback (...)
document-pdfAcrobat User guide
In stock
Limit: 3
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Reference designs

TIDEP0015 — Capacitive Touchscreen Display Reference Design

Capacitive touchscreen displays generally provide a higher quality and better user experience than traditional resistive touchscreen displays. This reference design shows how to interface a capacitive touchscreen display to the Sitara AM437x processors. The display has an integrated touchscreen (...)
document-pdfAcrobat Schematic
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HTSSOP (PWP) 24 View options
VQFN (RGE) 24 View options

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