Adjustable, -15V Output Inverting DC/DC Converter in 3x3 QFN


Product details


Topology Inverting Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Vout (Min) (V) -15 Vout (Max) (V) -2 Switch current limit (Typ) (A) 1 Duty cycle (Max) (%) 87.5 Features Enable, Load Disconnect, UVLO Fixed Switching frequency (Min) (kHz) 1250 Switching frequency (Max) (kHz) 1380 Type Converter Iq (Typ) (mA) 0.97 Rating Catalog Iout (Max) (A) 0.36 Operating temperature range (C) -40 to 85 open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)

Package | Pins | Size

VSON (DRC) 10 9 mm² 3.00 x 3.00 VSON (DRC) 10 9 mm² 3 x 3 open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)


  • Adjustable Output Voltage Down to –15 V
  • 2.7-V to 5.5-V Input Voltage Range
  • Up to 360-mA Output Current
  • 1000-mA Typical Switch Current Limit
  • Up to 84% Efficiency
  • Typical 1.4-MHz Fixed-Frequency PWM Operation
  • Thermal Shutdown
  • Typical –19-V Output Overvoltage Protection
  • 1.5-μA Shutdown Current
  • Small 3-mm × 3-mm SON-10 Package (DRC)

All other trademarks are the property of their respective ownersPowerPAD Is a trademark of Texas Instruments

  • Generic Negative Voltage Supply
  • Small-to-Medium Size OLED Displays
  • Bias Supply
open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)


The TPS63700 is an inverting DC/DC converter generating a negative output voltage down to –15 V with output currents up to 360 mA, depending on input-voltage to output-voltage ratio. With a peak efficiency of 84%, the device is ideal for portable battery-powered equipment. The input voltage range of 2.7 V to 5.5 V allows the TPS63700 to be directly powered from a Li-ion battery, from 3-cell NiMH/NiCd, from a 3.3-V or 5-V supply rail.

The inverter operates with a fixed-frequency pulse width modulation (PWM) control topology. The device has an internal current limit, overvoltage protection, and a thermal shutdown for highest reliability under fault conditions.

A switching frequency of typically 1.4 MHz allows the use of small external components enabling a small solution size.

The TPS63700 comes in a small 3-mm × 3-mm SON-10 package.

open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)

Technical documentation

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Type Title Date
* Datasheet TPS63700 DC-DC Inverter datasheet (Rev. D) Oct. 30, 2015
Application notes Buck-Boost Converters Solving Power Challenges in Optical Modules May 13, 2019
Application notes Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) Mar. 12, 2019
Application notes Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application notes Understanding Undervoltage Lockout in Power Devices (Rev. A) Sep. 19, 2018
Application notes QFN and SON PCB Attachment (Rev. B) Aug. 24, 2018
Application notes A Topical Index of TI Low Power Buck DC/DC Application Notes Jan. 17, 2018
Application notes Extending the Soft Start Time Without a Soft Start Pin (Rev. B) Jun. 15, 2017
Application notes Design considerations for a resistive feedback divider in a DC/DC converter Apr. 26, 2012
Selection guides Power Management for Precision Analog Jun. 08, 2011
Application notes Minimizing Buck-Boost (Inverting) Converter High-Frequency Switching Noise (Rev. A) Apr. 01, 2011
User guides TPS63700EVM-139 (Rev. A) Mar. 03, 2006

Design & development

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

Hardware development

document-generic User guide

This board supports: TAS2555YZEVMTAS2557EVM and TAS2559EVM.

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TPS63700 Evaluation Module
document-generic User guide

The TPS63700EVM-139 is an evaluation tool for the TPS63700 Inverting DC/DC Converter. It can generate a negative output voltage as low as -15 V with output currents up to 360 mA, depending on input-voltage to output-voltage ratio. With a total efficiency up to 84%, the device is ideal (...)

  • Input Voltage: 2.7 V to 5.5 V
  • Output Voltage: adjustable -2 V to -15 V
  • Output Current: 360 mA (max)
  • Switch Current Limit: 1000 mA (typ)
  • Efficiency at Negative Output Rail: 84% (max)
  • Package: 3x3 QFN-10
  • 1.4-MHz Fixed Frequency PWM Operation (typ)
  • Over Voltage Protection up to -19 V
  • 1.5-uA Shutdown Current

CAD/CAE symbols

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VSON (DRC) 10 View options

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Lowering Noise in Battery Powered Applications with New Buck-Boost Mode Transition

This video shows how to avoid noise caused by mode changes common in battery powered applications when using buck-boost converters.

Posted: 30-Jan-2019
Duration: 04:40

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