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TPS54JA20 ACTIVE 2.7-V to 16-V input, 12-A synchronous buck converter with remote sense and latch-off current limit This 12-A converter product offers greater efficiency in a in smaller, fully lead-free package.

Product details


Vin (Min) (V) 1.5 Vin (Max) (V) 18 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 12 Iq (Typ) (uA) 1350 Switching frequency (Min) (kHz) 250 Switching frequency (Max) (kHz) 1000 Features Enable, Light Load Efficiency, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Soft Start Adjustable, Over Current Protection, UVLO Fixed, Adjustable Current Limit Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN-CLIP (RVE) 28 16 mm² 4.5 x 3.5 open-in-new Find other Buck converters (integrated switch)
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Technical documentation

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Type Title Date
* Data sheet TPS53515 1.5-V to 18-V (4.5-V to 25-V Bias) Input, 12-A Single Synchronous Step-Down SWIFT™ Converter datasheet (Rev. B) Jul. 27, 2015
Application note DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications (Rev. A) May 04, 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) Apr. 08, 2021
Application note Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) Jan. 08, 2020
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Selection guide SWIFT DC/DC Converters Selector Guide (Rev. G) Feb. 06, 2019
Application note Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev Jan. 25, 2017
Application note 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 Mar. 07, 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. 02, 2015
White paper Choosing the Right Variable Frequency Buck Regulator Control Strategy (PPT) Oct. 02, 2015
Application note Not All Jitter Is Created Equal (Rev. A) Jul. 04, 2015
Technical article D-CAP3 – A sequel better than the original May 07, 2015
User guide TPS53515 User's Guide (Rev. B) Feb. 03, 2014
Technical article Power Tips: Hooray for integrated FETs! Jan. 07, 2014

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

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 (...)

  • D-CAP3™ control mode for fast transient response and low external component count
  • 0.5%, 600-mV reference voltage enables tight output voltage regulation accuracy

Design tools & simulation

SLUM399.ZIP (531 KB) - PSpice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SLURB03.ZIP (877 KB)

Reference designs

Three Different Buck Converter Circuits to Convert 12V to 1.2V at >6A Load Current Reference Design
PMP11438 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 (...)
document-generic Schematic
PMBus Power System for Enterprise Ethernet Switches Reference Design
PMP11399 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 (...)
document-generic Schematic
TPS53515 Low Power DDR Memory Power Supply Reference Design
PMP20026 The PMP20026 reference design provides an efficient low power solution for DDR4 memory.  The power supply is powered from a 12V source and regulates the output to 1.2V at up to 6A.  The TPS53515 operates in a single phase buck mode at 500kHz that allows for very high efficiency (...)
document-generic Schematic
High Power Density 12Vin, 11.8W Buck Converter with Inductor On Top of the IC
TIDA-00595 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 (...)
document-generic Schematic document-generic User guide
Xilinx Virtex UltraScale FPGA Power Solution with PMBus Reference Design
PMP9475 The PMP9475 12V-input reference design provides all the power supply rails necessary to power Xilinx's Virtex® UltraScale™ family of FPGAs in  a compact, highly efficient design.  This design uses several of TI's PMBus Point-Of-Load voltage regulators for ease of (...)
document-generic Schematic
Complete PMBus Power System for Enterprise Ethernet Switches Reference Design
PMP10896 Complete PMBus power system for 3 ASIC/FPGA cores, DDR3 core memory, and auxiliary voltages found on high-performance Ethernet Switches.
document-generic Schematic
Communication ASIC Core Power Supply Reference Design
PMP9146 The PMP9146 utilizes the TPS53515 DCAP3-mode SWIFT stepdown DC-DC converter to power high-current ASIC core rails at 1.2Vout/12A, with only 247mm2 of total power supply area and 27 total components.
document-generic Schematic
Design files

CAD/CAE symbols

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VQFN-CLIP (RVE) 28 View options

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