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TPS53515

ACTIVE

1.5-V to 18-V, 12-A synchronous SWIFT™ buck converter

A newer version of this product is available

open-in-new Compare alternates
Same functionality with different pin-out to the compared device.
NEW TPS548A23 ACTIVE 4V to 16V, 12A synchronous step-down converter Higher efficiency in a smaller package
Similar functionality to the compared device.
TPS548A28 ACTIVE 2.7-V to 16-V, 15-A synchronous buck converter with remote sense and 3-V LDO Upgraded higher current part with wider operating temperature range and a higher switching frequency in a smaller package.

Product details

Rating Catalog Topology Buck Iout (max) (A) 12 Vin (max) (V) 18 Vin (min) (V) 1.5 Vout (max) (V) 5.5 Vout (min) (V) 0.6 Features Adjustable current limit, Enable, Light-load efficiency, Overcurrent protection, Power good, Prebias startup, Soft-start adjustable, Synchronous rectification, UVLO Fixed Control mode D-CAP3 Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00135 Duty cycle (max) (%) 80
Rating Catalog Topology Buck Iout (max) (A) 12 Vin (max) (V) 18 Vin (min) (V) 1.5 Vout (max) (V) 5.5 Vout (min) (V) 0.6 Features Adjustable current limit, Enable, Light-load efficiency, Overcurrent protection, Power good, Prebias startup, Soft-start adjustable, Synchronous rectification, UVLO Fixed Control mode D-CAP3 Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00135 Duty cycle (max) (%) 80
VQFN-CLIP (RVE) 28 15.75 mm² (4.5 mm × 3.5 mm)
  • Integrated 13.8mΩ and 5.9mΩ MOSFETs with 12A continuous output current
  • Supports all ceramic output capacitors
  • Reference voltage 600mV ±0.5% tolerance
  • Output voltage range: 0.6V to 5.5V
  • D-CAP3™ control mode with fast load-step response
  • Auto-skipping Eco-mode™ for high light-load efficiency
  • FCCM for tight output ripple and voltage requirements
  • Eight selectable frequency settings from 250kHz to 1MHz
  • Precharged start-up capability
  • Built-in output discharge circuit
  • Open-drain power-good output
  • 3.5mm × 4.5mm, 28-pin, VQFN-CLIP package
  • Integrated 13.8mΩ and 5.9mΩ MOSFETs with 12A continuous output current
  • Supports all ceramic output capacitors
  • Reference voltage 600mV ±0.5% tolerance
  • Output voltage range: 0.6V to 5.5V
  • D-CAP3™ control mode with fast load-step response
  • Auto-skipping Eco-mode™ for high light-load efficiency
  • FCCM for tight output ripple and voltage requirements
  • Eight selectable frequency settings from 250kHz to 1MHz
  • Precharged start-up capability
  • Built-in output discharge circuit
  • Open-drain power-good output
  • 3.5mm × 4.5mm, 28-pin, VQFN-CLIP package

The TPS53515 device is a small-sized, synchronous buck converter with an adaptive on-time D-CAP3 control mode. The device offers ease-of-use and low external-component count for space-conscious power systems.

This device features high-performance integrated MOSFETs, accurate 0.5% 0.6V reference, and an integrated boost switch. Competitive features include very low external-component count, fast load-transient response, auto-skip mode operation, internal soft-start control, and no requirement for compensation.

A forced continuous conduction mode helps meet tight voltage regulation accuracy requirements for performance DSPs and FPGAs. The TPS53515 device is available in a 28-pin VQFN-CLIP package and is specified from –40°C to 85°C ambient temperature.

The TPS53515 device is a small-sized, synchronous buck converter with an adaptive on-time D-CAP3 control mode. The device offers ease-of-use and low external-component count for space-conscious power systems.

This device features high-performance integrated MOSFETs, accurate 0.5% 0.6V reference, and an integrated boost switch. Competitive features include very low external-component count, fast load-transient response, auto-skip mode operation, internal soft-start control, and no requirement for compensation.

A forced continuous conduction mode helps meet tight voltage regulation accuracy requirements for performance DSPs and FPGAs. The TPS53515 device is available in a 28-pin VQFN-CLIP package and is specified from –40°C to 85°C ambient temperature.

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TPS548A20 ACTIVE 1.5-V to 20-V, 15-A synchronous SWIFT™ buck converter Higher current part that offers a wider VIN and temperature range with frequency synchronization.
TPS53513 ACTIVE 1.5-V to 18-V, 8-A synchronous SWIFT™ buck converter Lower current equivalent part.

Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS53515 1.5V to 18V (4.5V to 25V Bias) Input, 12A Single Synchronous Step-Down SWIFT™ Converter datasheet (Rev. C) PDF | HTML Feb 5, 2026
Application note DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications (Rev. A) PDF | HTML May 4, 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) Apr 8, 2021
Application note Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) PDF | HTML Jan 8, 2020
Selection guide SWIFT DC/DC Converters Selector Guide (Rev. G) Feb 6, 2019
Application note Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev Jan 25, 2017
Analog design Journal How to select input capacitors for a buck converter Apr 26, 2016
Application note Accuracy-Enhanced Ramp-Generation Design for D-CAP3 Modulation (Rev. A) Apr 25, 2016
Technical article Don’t say goodbye to your power supply PDF | HTML Mar 7, 2016
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC Feb 22, 2016
White paper Choosing the Right Variable Frequency Buck Regulator Control Strategy Oct 2, 2015
White paper Choosing the Right Variable Frequency Buck Regulator Control Strategy (PPT) Oct 2, 2015
Application note Not All Jitter Is Created Equal (Rev. A) Jul 4, 2015
Technical article D-CAP3 – A sequel better than the original PDF | HTML May 7, 2015

Design & development

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

Evaluation board

TPS53515EVM-587 — TPS53515EVM-587 1.5V to 22V Input Synchronous Step-Down Converter Evaluation Module

The TPS53515EVM-587 is designed to help the user easily evaluate and test the operation and functionality of the TPS53515 buck converter. The EVM converts a 1.5-V to 18-V input voltage to a regulated 1.2-V output voltage that delivers up to 12 A in a 4.5-mm x 3.5-mm QFN package. This board includes (...)

User guide: PDF | HTML
Supported products & hardware
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Simulation model

TPS53515 PSpice Transient Model

SLUM399.ZIP (531 KB) - PSpice model
Supported products & hardware
Calculation tool

SLURB03 — TPS53513 TPS53515 TPS53915 Excel Calculator and Layout Checklist

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Reference design

PMP10896 — Complete PMBus Power System for Enterprise Ethernet Switches Reference Design

Complete PMBus power system for 3 ASIC/FPGA cores, DDR3 core memory, and auxiliary voltages found on high-performance Ethernet Switches.

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PMP11399 — PMBus Power System for Enterprise Ethernet Switches Reference Design

PMP11399 is a complete PMBus power system for 3 ASIC/FPGA cores, DDR3 core memory, VTT termination, and auxiliary voltages commonly found on high-performance Ethernet Switches. The hardware is accompanied by a GUI that allows the user to perform real-time configuration and monitoring of the power (...)

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Reference design

PMP11438 — Three Different Buck Converter Circuits to Convert 12V to 1.2V at >6A Load Current Reference Design

PMP11438 is a vehicle used to compare three different power solutions for converting a 12V bus to 1.2V at 6-10A. The 1.2V output voltage is applicable to DDR4 memory applications. Each solution offers an advantage in either full load efficiency, light load efficiency, density, height, transient (...)

Supported products & hardware
Reference design

TIDA-00595 — High Power Density 12Vin, 11.8W Buck Converter with Inductor On Top of the IC

The TPS53515 Inductor-On-Top Step-Down Buck Converter reference design enables reduction of X-Y area while enabling >87% efficiency with 2.6W of power loss @12A load and 12mV of output voltage ripple with only 10x22uF ceramic output caps. This power reference design supports a 12V input and a (...)

Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
VQFN-CLIP (RVE) 28 Ultra Librarian

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