Product details

Display type LCD bipolar IC integration LCD bias Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Source driver voltage (Min) (V) -15 Source driver voltage (Max) (V) 15 Level shifter/scan driver (ch) 0 V_POS (Min) (V) 3.2 V_POS (Max) (V) 15 V_NEG (Min) (V) -15 V_NEG (Max) (V) -2 Features Adjustable sequencing Topology Split-Rail Rating Catalog
Display type LCD bipolar IC integration LCD bias Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Source driver voltage (Min) (V) -15 Source driver voltage (Max) (V) 15 Level shifter/scan driver (ch) 0 V_POS (Min) (V) 3.2 V_POS (Max) (V) 15 V_NEG (Min) (V) -15 V_NEG (Max) (V) -2 Features Adjustable sequencing Topology Split-Rail Rating Catalog
VQFN (RGE) 24 16 mm² 4 x 4
  • 2.7-V to 5.5-V Input Voltage Range
  • Dual Adjustable Output Voltages Up to 15 V and
    Down to –15 V
  • 800-mA Typical Switch Current Limit at Boost and
    Inverter Main Switches at TPS65130
  • 2-A Typical Switch Current Limit at Boost and
    Inverter Main Switches at TPS65131
  • Up to 89% Efficiency at Positive Output
    Voltage Rail
  • Up to 81% Efficiency at Negative Output
    Voltage Rail
  • Power-Save Mode for High Efficiency at Low Load
    Currents
  • Independent Enable Inputs for Power-Up and
    Power-Down Sequencing
  • Control Output for External PFET to Support
    Completely Disconnecting the Battery
  • Minimum 1.25-MHz Fixed Frequency PWM
    Operation
  • Thermal Shutdown
  • Overvoltage Protection on Both Outputs
  • 1-µA Shutdown Current
  • Small 4-mm × 4-mm VQFN-24 Package (RGE)
  • 2.7-V to 5.5-V Input Voltage Range
  • Dual Adjustable Output Voltages Up to 15 V and
    Down to –15 V
  • 800-mA Typical Switch Current Limit at Boost and
    Inverter Main Switches at TPS65130
  • 2-A Typical Switch Current Limit at Boost and
    Inverter Main Switches at TPS65131
  • Up to 89% Efficiency at Positive Output
    Voltage Rail
  • Up to 81% Efficiency at Negative Output
    Voltage Rail
  • Power-Save Mode for High Efficiency at Low Load
    Currents
  • Independent Enable Inputs for Power-Up and
    Power-Down Sequencing
  • Control Output for External PFET to Support
    Completely Disconnecting the Battery
  • Minimum 1.25-MHz Fixed Frequency PWM
    Operation
  • Thermal Shutdown
  • Overvoltage Protection on Both Outputs
  • 1-µA Shutdown Current
  • Small 4-mm × 4-mm VQFN-24 Package (RGE)

The TPS6513x is dual-output DC-DC converter generating a positive output voltage up to 15 V and a negative output voltage down to –15 V with output currents in a 200-mA range in typical applications, depending on input voltage to output voltage ratio. With a total efficiency up to 85%, the device is ideal for portable battery-powered equipment. The input voltage range of 2.7 V to 5.5 V allows the devices to be powered from batteries or from fixed 3.3-V or 5-V supplies. The TPS6513x comes in a small 4-mm × 4- mm VQFN-24 package. Together with a minimum switching frequency of 1.25 MHz, the device enables designing small power supply applications because it requires only a few small external components.

The converter operates with a fixed frequency PWM control topology and, if power-save mode is enabled, it uses a pulse-skipping mode at light-load currents. It operates with only 500-µA device quiescent current. Independent enable pins allow power-up and powerdown sequencing for both outputs. The device has an internal current limit overvoltage protection and a thermal shutdown for highest reliability under fault conditions.

The TPS6513x is dual-output DC-DC converter generating a positive output voltage up to 15 V and a negative output voltage down to –15 V with output currents in a 200-mA range in typical applications, depending on input voltage to output voltage ratio. With a total efficiency up to 85%, the device is ideal for portable battery-powered equipment. The input voltage range of 2.7 V to 5.5 V allows the devices to be powered from batteries or from fixed 3.3-V or 5-V supplies. The TPS6513x comes in a small 4-mm × 4- mm VQFN-24 package. Together with a minimum switching frequency of 1.25 MHz, the device enables designing small power supply applications because it requires only a few small external components.

The converter operates with a fixed frequency PWM control topology and, if power-save mode is enabled, it uses a pulse-skipping mode at light-load currents. It operates with only 500-µA device quiescent current. Independent enable pins allow power-up and powerdown sequencing for both outputs. The device has an internal current limit overvoltage protection and a thermal shutdown for highest reliability under fault conditions.

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Technical documentation

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Type Title Date
* Data sheet TPS6513x Positive and Negative Output DC-DC Converter datasheet (Rev. D) 26 Jan 2016
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Technical article Improving sensor DAQ performance using the PRU-ICSS for grid protection and control 09 Oct 2018
Application note Understanding Undervoltage Lockout in Power Devices (Rev. A) 19 Sep 2018
Technical article Interfacing multiple ADCs to a single processor for grid protection and control 13 Sep 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
User guide TPS65131EVM-839 User's Guide 22 Dec 2017
Application note Basic calculation of an inverting buck-boost power stage (Rev. A) 28 Aug 2017
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. C) 08 Jan 2014
Technical article Everything is bigger in Texas 16 Dec 2013
User guide TPS65131EVM User's Guide (Rev. C) 23 Nov 2010
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

TPS65131EVM-839 — Evaluation Module for TPS65131 - Positive and Negative Output DC-DC Converter

The TPS65131EVM-839 is an evaluation tool for the TPS65131 Positive and Negative Output DC-DC Converter for general-purpose split-rail supplies, industrial applications and LCD or OLED displays. The evaluation module can accept input voltages in range of 2.7 V to 5.5 V and delivers by default 8 V (...)
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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 (...)
Reference designs

TIDA-010065 — High-efficiency, low-emission, isolated DC/DC converter-based analog input module reference design

This reference design is a simplified architecture for generating an isolated power supply for isolated amplifiers for measuring isolated voltages and currents. A fully integrated DC/DC converter with reinforced isolation operating from a 5-V input with configurable 5-V or 5.4-V output (headroom (...)
Reference designs

TIDA-01576 — High accuracy analog input module reference design with 16-bit 1-MSPS dual simultaneous-sampling ADC

This reference design accurately measures 16-channel AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range. This range covers protection and measurement requirements (including sampling requirements as per IEC 61850-9-2), which simplifies system design and improves (...)
Reference designs

TIDA-00834 — High Accuracy Analog Front End Using 16-Bit SAR ADC with ±10V Measurement Range Reference Design

The TIDA-00834 reference design accurately measures voltage and current inputs using simultaneously sampled, 16-bit, ±10 V, bipolar input SAR ADC critical to identify power systems malfunction and power quality related failures accurately and quickly. This results in reduced power systems (...)
Reference designs

TIDA-010008 — Flat-Clamp TVS based Reference Design for Protection Against Transient for Grid Applications

This reference design features multiple approaches for  protecting AC or DC analog input, DC analog output, AC or DC binary input, digital output with a high side or low side driver, LCD bias supply, USB interfaces (power and data) and onboard power supplies with 24, 12 or 5V input used in (...)
Reference designs

TIDA-01555 — Flexible Interface (PRU-ICSS) Reference Design for Simultaneous, Coherent DAQ Using Multiple ADCs

This reference design showcases an interface implementation for connecting multiple high voltage bipolar input, 8-channel, mux-input SAR ADCs (6) with the Sitara Arm processors for expanding the number of input channels using Programmable Real-time Unit (PRU-ICSS). ADCs are configured for (...)
Reference designs

PMP9780 — Reference Design: Bipolar TFT LCD Supply Using TPS65131-Q1 and Charge Pumps

This reference design details a display power circuit which generates a bipolar voltage rail for source drivers and additional supplies for gate drivers. Charge pumps are used to generate the voltage supply for gate drivers, which makes this design easy to implement. By using only one dc-dc (...)
Reference designs

TIDA-00493 — Voltage & Current (Power) Measurement AFE for mV Output Sensor Interface to SAR ADC Reference Design

This reference design is a fixed-gain amplifier stage for measuring low-amplitude voltage and current inputs accurately over a wide dynamic range using SAR ADC for power measurement applications. Low-amplitude AC voltage from voltage dividers, current transformers or split-core current sensors with (...)
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VQFN (RGE) 24 View options

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