TPS65131

VQFN (RGE)

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.

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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

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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 (...)

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Reference designs

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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 (...)

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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 (...)

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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 (...)

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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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