Product details

Display type LCD unipolar IC integration LCD bias Vin (Min) (V) 8 Vin (Max) (V) 14.7 Source driver voltage (Max) (V) 19 Level shifter/scan driver (ch) 0 V_NEG (Max) (V) -2 Features Adjustable sequencing Topology Boost, Buck Rating Catalog
Display type LCD unipolar IC integration LCD bias Vin (Min) (V) 8 Vin (Max) (V) 14.7 Source driver voltage (Max) (V) 19 Level shifter/scan driver (ch) 0 V_NEG (Max) (V) -2 Features Adjustable sequencing Topology Boost, Buck Rating Catalog
HTSSOP (PWP) 28 43 mm² 4.4 x 9.7 HTSSOP (PWP) 28 43 mm² 4.40 x 9.70
  • 8-V to 14.7-V Input Voltage Range
  • VS Output Voltage Range up to 19 V
  • TPS65161 has a 2.8-A Switch Current Limit
  • TPS65161A has a 3.7-A Switch Current Limit
  • TPS65161B has a 3.7-A Switch Current Limit and 100-mA
    Charge Pump Output Current
  • 1.5% Accurate 2.3-A Step-Down Converter
  • 500-kHz/750-kHz Fixed Switching Frequency
  • Negative Charge Pump Driver for VGL
  • Positive Charge Pump Driver for VGH
  • Adjustable Sequencing for VGL, VGH
  • Gate Drive Signal to Drive External MOSFET
  • Internal and Adjustable Soft Start
  • Short-Circuit Protection
  • Overvoltage Protection
  • Thermal Shutdown
  • Available in HTSSOP-28 Package
  • 8-V to 14.7-V Input Voltage Range
  • VS Output Voltage Range up to 19 V
  • TPS65161 has a 2.8-A Switch Current Limit
  • TPS65161A has a 3.7-A Switch Current Limit
  • TPS65161B has a 3.7-A Switch Current Limit and 100-mA
    Charge Pump Output Current
  • 1.5% Accurate 2.3-A Step-Down Converter
  • 500-kHz/750-kHz Fixed Switching Frequency
  • Negative Charge Pump Driver for VGL
  • Positive Charge Pump Driver for VGH
  • Adjustable Sequencing for VGL, VGH
  • Gate Drive Signal to Drive External MOSFET
  • Internal and Adjustable Soft Start
  • Short-Circuit Protection
  • Overvoltage Protection
  • Thermal Shutdown
  • Available in HTSSOP-28 Package

The TPS65161 family offers a compact power supply solution to provide all four voltages required by thin-film transistor (TFT) LCD panels. With their high current capabilities, the devices are ideal for large screen monitor panels and LCD TV applications.

Compared to the TPS65160 and TPS65160A the TPS65161/A/B family of devices offer increased step-down converter output current. The TPS65161B also offers increased charge pump output current, and a higher undervoltage lockout threshold. The devices can be powered from a 12-V input supply and generate the four main supply voltages required by TFT LCD display panels.

Each device comprises a boost converter to generate the source voltage VS, a step-down converter to generate the logic supply V(LOGIC), and regulated positive and negative charge pumps to generate the TFT bias voltages VGH and VGL. Both switching converters and both charge pumps operate from a central clock that can be set to either 750-kHz or 500-kHz by tying the FREQ pin high or low.

The TPS65161/A/B devices feature adjustable power supply sequencing, plus a number of safety features such as boost converter overvoltage protection, buck converter short-circuit protection, and thermal shutdown. The devices also incorporate a gate drive signal to control an external MOSFET isolation switch connected in series with VS or VGH (see the application section at the end of this data sheet for more information).

The TPS65161 family offers a compact power supply solution to provide all four voltages required by thin-film transistor (TFT) LCD panels. With their high current capabilities, the devices are ideal for large screen monitor panels and LCD TV applications.

Compared to the TPS65160 and TPS65160A the TPS65161/A/B family of devices offer increased step-down converter output current. The TPS65161B also offers increased charge pump output current, and a higher undervoltage lockout threshold. The devices can be powered from a 12-V input supply and generate the four main supply voltages required by TFT LCD display panels.

Each device comprises a boost converter to generate the source voltage VS, a step-down converter to generate the logic supply V(LOGIC), and regulated positive and negative charge pumps to generate the TFT bias voltages VGH and VGL. Both switching converters and both charge pumps operate from a central clock that can be set to either 750-kHz or 500-kHz by tying the FREQ pin high or low.

The TPS65161/A/B devices feature adjustable power supply sequencing, plus a number of safety features such as boost converter overvoltage protection, buck converter short-circuit protection, and thermal shutdown. The devices also incorporate a gate drive signal to control an external MOSFET isolation switch connected in series with VS or VGH (see the application section at the end of this data sheet for more information).

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Similar products you might be interested in

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Similar functionality to the compared device.
TPS65170 ACTIVE 4-CH LCD Bias w/ Regulators for External Charge Pump This product has the same rails and controllers for VGH & VGL.
TPS65176 ACTIVE LCD Bias IC for TV This product has the same rails, and adjustable power-on sequence and switching frequency.

Technical documentation

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Type Title Date
* Data sheet Bias Power Supply for TV and Monitor TFT LCD Panels. datasheet (Rev. E) 05 Mar 2013
Application note 벅 컨버터의 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 Basic Calculation of a Buck Converter's Power Stage (Rev. B) 17 Aug 2015
EVM User's guide TPS65161EVM-194 (Rev. A) 22 Apr 2008
Application note Minimizing Ringing at the Switch Node of a Boost Converter 15 Sep 2006

Design & development

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

Evaluation board

TPS65161EVM-194 — TPS65161 Evaluation Module

The TPS65161EVM-194 is an evaluation tool for the TPS65161 Bias Power Supply for TV and Monitor TFT LCD Panels.

User guide: PDF
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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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HTSSOP (PWP) 28 View options

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