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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

TPS53353

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 20 Vin (min) (V) 1.5 Vin (max) (V) 15 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 1000 Features Adjustable current limit, Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO Fixed Control mode D-CAP Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 320 Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 20 Vin (min) (V) 1.5 Vin (max) (V) 15 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 1000 Features Adjustable current limit, Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO Fixed Control mode D-CAP Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 320 Duty cycle (max) (%) 90
LSON-CLIP (DQP) 22 30 mm² 6 x 5
  • 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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Type Title Date
* Data sheet TPS53353 High-Efficiency 20-A Synchronous Buck SWIFT™ Converter With Eco-mode™ datasheet (Rev. D) PDF | HTML 08 Apr 2021
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
Application note Measuring the Bode Plot of D-CAP™, D-CAP2™, and D-CAP3™ DC/DC Converters (Rev. A) PDF | HTML 21 Apr 2023
User guide TPS53353 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 11 Nov 2021
White paper Power solution options for data center applications (Rev. A) 27 Feb 2020
Selection guide SWIFT DC/DC Converters Selector Guide (Rev. G) 06 Feb 2019
Application note DC/DC Point-of-load Power Solutions for Wired Networking Switch Systems 11 Dec 2018
Application note Minimizing Switching Ringing at TPS53355 and TPS53353 Family Devices (Rev. A) 14 Nov 2018
Application note Analysis and Design of Input Filter for DC-DC Circuit 27 Nov 2017
Application note Calculating Output Capacitance to Meet Transient and Ripple Requirements 02 May 2017
Application note Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev 25 Jan 2017
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 22 Feb 2016
Application note TPS53319 DCAP Mode with Ripple Injection Modeling Design Consideration 23 Oct 2014
Application note D-CAP(TM) Mode With All-Ceramic Output Capacitor Application 03 Feb 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
Not available on TI.com
Simulation model

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

SLUM387B.ZIP (38 KB) - PSpice Model
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Calculation tool

SLURAZ7 — TPS533xx Excel Calculator Tool

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
TPS53318 — 1.5-V to 22-V, 8-A synchronous buck converter with eco-mode TPS53319 — 1.5-V to 22-V, 14-A synchronous buck converter with eco-mode TPS53353 — High-efficiency 1.5-V to 15-V, 20-A synchronous SWIFT™ buck converter with eco-mode TPS53355 — High-efficiency 1.5-V to 15-V, 30-A synchronous SWIFT™ buck converter with eco-mode
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LSON-CLIP (DQP) 22 Ultra Librarian
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