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TPS53353

ACTIVE

High-efficiency 1.5-V to 15-V, 20-A synchronous SWIFT™ buck converter with eco-mode

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Data sheet

A newer version of this product is available

open-in-new Compare alternates
Same functionality with different pin-out to the compared device.
TPS548B23 ACTIVE 4V to 16V, 20A synchronous step-down converter Higher efficiency in a smaller package
TPS54KB20 ACTIVE 4-V to 16-V input, 25-A remote sense synchronous step-down converter Optimized for higher current in a smaller form factor

TPS53353

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 15 Vin (min) (V) 1.5 Vout (max) (V) 5.5 Vout (min) (V) 0.6 Features Adjustable current limit, Enable, Forced PWM, Light-load efficiency, Overcurrent protection, Power good, Prebias startup, Soft-start adjustable, Synchronous rectification, UVLO Fixed Control mode D-CAP Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00032 Duty cycle (max) (%) 90
Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 15 Vin (min) (V) 1.5 Vout (max) (V) 5.5 Vout (min) (V) 0.6 Features Adjustable current limit, Enable, Forced PWM, Light-load efficiency, Overcurrent protection, Power good, Prebias startup, Soft-start adjustable, Synchronous rectification, UVLO Fixed Control mode D-CAP Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00032 Duty cycle (max) (%) 90
LSON-CLIP (DQP) 22 30 mm² (6 mm × 5 mm)
  • New product available: TPS548B28 16-V, 20-A synchronous-buck converter with remote sense
  • Conversion input voltage range: 1.5 V to 15 V
  • VDD input voltage range: 4.5 V to 25 V
  • 92% efficiency from 12 V to 1.5 V at 20 A
  • Output voltage range: 0.6 V to 5.5 V
  • 5-V LDO output
  • Supports single-rail input
  • Integrated power MOSFETs with 20 A of continuous output current
  • Auto-skip Eco-mode™ for light-load efficiency
  • < 10-µA shutdown current
  • D-CAP™ mode with fast transient response
  • Selectable switching frequency from 250 kHz to 1 MHz with external resistor
  • Selectable auto-skip or PWM-only operation
  • Built-in 1% 0.6-V reference
  • 0.7-ms, 1.4-ms, 2.8-ms, and 5.6-ms selectable internal voltage servo soft start
  • Integrated boost switch
  • Precharged start-up capability
  • Adjustable overcurrent limit with thermal compensation
  • Overvoltage, undervoltage, UVLO, and overtemperature protection
  • Supports all ceramic output capacitors
  • Open-drain power-good indication
  • Incorporates NexFET™ power block technology
  • 22-pin QFN package with PowerPAD™
  • For SWIFT™ power products documentation, see http://www.ti.com/swift
  • New product available: TPS548B28 16-V, 20-A synchronous-buck converter with remote sense
  • Conversion input voltage range: 1.5 V to 15 V
  • VDD input voltage range: 4.5 V to 25 V
  • 92% efficiency from 12 V to 1.5 V at 20 A
  • Output voltage range: 0.6 V to 5.5 V
  • 5-V LDO output
  • Supports single-rail input
  • Integrated power MOSFETs with 20 A of continuous output current
  • Auto-skip Eco-mode™ for light-load efficiency
  • < 10-µA shutdown current
  • D-CAP™ mode with fast transient response
  • Selectable switching frequency from 250 kHz to 1 MHz with external resistor
  • Selectable auto-skip or PWM-only operation
  • Built-in 1% 0.6-V reference
  • 0.7-ms, 1.4-ms, 2.8-ms, and 5.6-ms selectable internal voltage servo soft start
  • Integrated boost switch
  • Precharged start-up capability
  • Adjustable overcurrent limit with thermal compensation
  • Overvoltage, undervoltage, UVLO, and overtemperature protection
  • Supports all ceramic output capacitors
  • Open-drain power-good indication
  • Incorporates NexFET™ power block technology
  • 22-pin QFN package with PowerPAD™
  • For SWIFT™ power products documentation, see http://www.ti.com/swift

TPS53353 is a D-CAP™ mode, 20-A synchronous switcher with integrated MOSFETs. It is designed for ease of use, low external component count, and space-conscious power systems.

This device features 5.5-mΩ / 2.2-mΩ integrated MOSFETs, accurate 1%, 0.6-V reference, and integrated boost switch. A sample of competitive features include: a conversion input voltage range from 1.5 V to 15 V, very low external component count, D-CAP™ mode control for super fast transient, auto-skip mode operation, internal soft-start control, selectable frequency, and no need for compensation.

The conversion input voltage ranges from 1.5 V to 15 V, the supply voltage range is from 4.5 V to 25 V, and the output voltage range is from 0.6 V to 5.5 V.

The device is available in 5-mm × 6-mm, 22-pin QFN package and is specified from –40°C to 85°C.

The TPS548B28 is a newer 20A device designed for data center applications with a smaller, Pb-free package.

TPS53353 is a D-CAP™ mode, 20-A synchronous switcher with integrated MOSFETs. It is designed for ease of use, low external component count, and space-conscious power systems.

This device features 5.5-mΩ / 2.2-mΩ integrated MOSFETs, accurate 1%, 0.6-V reference, and integrated boost switch. A sample of competitive features include: a conversion input voltage range from 1.5 V to 15 V, very low external component count, D-CAP™ mode control for super fast transient, auto-skip mode operation, internal soft-start control, selectable frequency, and no need for compensation.

The conversion input voltage ranges from 1.5 V to 15 V, the supply voltage range is from 4.5 V to 25 V, and the output voltage range is from 0.6 V to 5.5 V.

The device is available in 5-mm × 6-mm, 22-pin QFN package and is specified from –40°C to 85°C.

The TPS548B28 is a newer 20A device designed for data center applications with a smaller, Pb-free package.
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Technical documentation

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* Data sheet TPS53353 High-Efficiency 20-A Synchronous Buck SWIFT™ Converter With Eco-mode™ datasheet (Rev. D) PDF | HTML Apr 8, 2021
Application brief Detailed Comparison Between TPS54KB20 Family and TPS53353 Family PDF | HTML Sep 3, 2024
Application note Measuring the Bode Plot of D-CAP™, D-CAP2™, and D-CAP3™ DC/DC Converters (Rev. A) PDF | HTML Apr 21, 2023
White paper Power solution options for data center applications (Rev. A) Feb 27, 2020
Selection guide SWIFT DC/DC Converters Selector Guide (Rev. G) Feb 6, 2019
Application note DC/DC Point-of-load Power Solutions for Wired Networking Switch Systems Dec 11, 2018
Application note Minimizing Switching Ringing at TPS53355 and TPS53353 Family Devices (Rev. A) Nov 14, 2018
Application note Analysis and Design of Input Filter for DC-DC Circuit Nov 27, 2017
Application note Calculating Output Capacitance to Meet Transient and Ripple Requirements May 2, 2017
Application note Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev Jan 25, 2017
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC Feb 22, 2016
Application note TPS53319 DCAP Mode with Ripple Injection Modeling Design Consideration Oct 23, 2014
Application note D-CAP(TM) Mode With All-Ceramic Output Capacitor Application Feb 3, 2011

Design & development

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

Evaluation board

TPS53353EVM-744 — High-Efficiency, 20-A, Synchronous Buck Converter With Eco-mode Control Scheme Evaluation Module

The TPS53353EVM-744 is designed to help the user easily evaluate and test the operation and functionality of the TPS53353 buck converter. The EVM converts a 1.5-V to 15-V input voltage to a regulated 1.5-V output voltage that delivers up to 20 A in a 5-mm x 6-mm QFN package. This board includes (...)

User guide: PDF | HTML
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Simulation model

TPS53353 Unencrypted PSpice Transient Model Package (Rev.A) (Rev. B)

SLUM387B.ZIP (38 KB) - PSpice model
Supported products & hardware
Calculation tool

SLURAZ7 — TPS533xx Excel Calculator Tool

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LSON-CLIP (DQP) 22 Ultra Librarian
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