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Buck converters (integrated switch)

TPS53515

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

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Data sheet

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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.

TPS53515

ACTIVE
Data sheet Order now

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) (mA) 1.35 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 1000 Features Adjustable current limit, Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO Fixed Operating temperature range (°C) -40 to 85 Rating Catalog Regulated outputs (#) 1 Control mode D-CAP3 Duty cycle (max) (%) 80 Type Converter
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) (mA) 1.35 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 1000 Features Adjustable current limit, Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO Fixed Operating temperature range (°C) -40 to 85 Rating Catalog Regulated outputs (#) 1 Control mode D-CAP3 Duty cycle (max) (%) 80 Type Converter
VQFN-CLIP (RVE) 28 15.75 mm² 4.5 x 3.5
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TPS53513 ACTIVE 1.5-V to 18-V, 8-A synchronous SWIFT™ buck converter Lower current equivalent part.
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.

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) PDF | HTML 27 Jul 2015
User guide TPS53515 Step-Down Converter Evaluation Module User's Guide (Rev. C) PDF | HTML 10 Nov 2021
Application note DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications (Rev. A) PDF | HTML 04 May 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Application note Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) PDF | HTML 08 Jan 2020
Selection guide SWIFT DC/DC Converters Selector Guide (Rev. G) 06 Feb 2019
Application note Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev 25 Jan 2017
Analog Design Journal How to select input capacitors for a buck converter 26 Apr 2016
Application note Accuracy-Enhanced Ramp-Generation Design for D-CAP3 Modulation (Rev. A) 25 Apr 2016
Technical article Don’t say goodbye to your power supply PDF | HTML 07 Mar 2016
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 22 Feb 2016
White paper Choosing the Right Variable Frequency Buck Regulator Control Strategy 02 Oct 2015
White paper Choosing the Right Variable Frequency Buck Regulator Control Strategy (PPT) 02 Oct 2015
Application note Not All Jitter Is Created Equal (Rev. A) 04 Jul 2015
Technical article D-CAP3 – A sequel better than the original PDF | HTML 07 May 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
Not available on TI.com
Simulation model

TPS53515 PSpice Transient Model

SLUM399.ZIP (531 KB) - PSpice Model
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Calculation tool

SLURB03 — TPS53513 TPS53515 TPS53915 Excel Calculator and Layout Checklist

Supported products & hardware

Supported products & hardware

Products
Buck converters (integrated switch)
TPS53513 — 1.5-V to 18-V, 8-A synchronous SWIFT™ buck converter TPS53515 — 1.5-V to 18-V, 12-A synchronous SWIFT™ buck converter TPS53915 — 1.5-V to 18-V, 12-A synchronous SWIFT™ buck converter with PMBus
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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

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 (...)
Test report: PDF
Schematic: PDF
Reference designs

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 (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP20026 — TPS53515 Low Power DDR Memory Power Supply Reference Design

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 (...)
Test report: PDF
Schematic: PDF
Reference designs

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 (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP9475 — Xilinx Virtex UltraScale FPGA Power Solution with PMBus Reference Design

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 (...)
Test report: PDF
Schematic: PDF
Reference designs

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.
Test report: PDF
Schematic: PDF
Reference designs

PMP9146 — Communication ASIC Core Power Supply Reference Design

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.
Test report: PDF
Schematic: PDF
Package Pins Download
VQFN-CLIP (RVE) 28 View options
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