Product details

Vin (Min) (V) 1.5 Vin (Max) (V) 15 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 30 Iq (Typ) (uA) 320 Switching frequency (Min) (kHz) 250 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Enable, Light Load Efficiency, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Forced PWM, Soft Start Adjustable, Over Current Protection, UVLO Fixed Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 1.5 Vin (Max) (V) 15 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 30 Iq (Typ) (uA) 320 Switching frequency (Min) (kHz) 250 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Enable, Light Load Efficiency, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Forced PWM, Soft Start Adjustable, Over Current Protection, UVLO Fixed Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
LSON-CLIP (DQP) 22 30 mm² 6 x 5
  • Alternative product available: LMZ31530 14.5-V, 30-A step-down power module in 15 × 16 × 5.8-mm QFN package
  • 96% maximum efficiency
  • Conversion input voltage range: 1.5 V to 15 V
  • VDD input voltage range: 4.5 V to 25 V
  • Output voltage range: 0.6 V to 5.5 V
  • 5-V LDO output
  • Supports single rail input
  • Integrated power MOSFETs with 30 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
  • Green (RoHS compatible) is optional
  • Create a custom design using the TPS53355 with the WEBENCH Power Designer
  • Alternative product available: LMZ31530 14.5-V, 30-A step-down power module in 15 × 16 × 5.8-mm QFN package
  • 96% maximum efficiency
  • Conversion input voltage range: 1.5 V to 15 V
  • VDD input voltage range: 4.5 V to 25 V
  • Output voltage range: 0.6 V to 5.5 V
  • 5-V LDO output
  • Supports single rail input
  • Integrated power MOSFETs with 30 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
  • Green (RoHS compatible) is optional
  • Create a custom design using the TPS53355 with the WEBENCH Power Designer

The TPS53355 is a D-CAP™ mode, 30-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-mΩ/2-mΩ integrated MOSFETs, accurate 1% 0.6-V reference, and integrated boost switch. A sample of competitive features include: 1.5-V to 15-V wide conversion input voltage range, 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 6-mm × 5-mm, 22-pin QFN package.

The LMZ31530 integrates the TPS53355, an inductor, and other passive components into a small, easy-to-use module.

The TPS53355 is a D-CAP™ mode, 30-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-mΩ/2-mΩ integrated MOSFETs, accurate 1% 0.6-V reference, and integrated boost switch. A sample of competitive features include: 1.5-V to 15-V wide conversion input voltage range, 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 6-mm × 5-mm, 22-pin QFN package.

The LMZ31530 integrates the TPS53355, an inductor, and other passive components into a small, easy-to-use module.

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LMZ31530 ACTIVE 3V to 14.5V, 30A Step-Down Power Module in 15x16x5.8mm QFN Package This product is a 30-A power module with integrated inductor to simplify design.

Technical documentation

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Type Title Date
* Data sheet TPS53355 1.5-V to 15-V Input (4.5-V to 25-V bias), 30-A Synch Step-down SWIFT™ Converter with Eco-mode™ datasheet (Rev. G) 08 Apr 2021
Application note Measuring the Bode Plot for D-CAPx DC/DC Converters 25 May 2021
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
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
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note 如何实现比基准更低的输出电压 08 Apr 2018
Application note Analysis and Design of Input Filter for DC-DC Circuit 27 Nov 2017
Selection guide Control-Mode Quick Reference Guide (Rev. A) 14 Sep 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
Technical article Don’t say goodbye to your power supply 07 Mar 2016
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 22 Feb 2016
Technical article Power Tips: How to reduce D-CAP control output capacitance 21 Jul 2015
Application note Not All Jitter Is Created Equal (Rev. A) 04 Jul 2015
Technical article Power Tips: How to create an adjustable output power supply 24 Jun 2015
Application note TPS53319 DCAP Mode with Ripple Injection Modeling Design Consideration 23 Oct 2014
User guide Using TPS53355EVM-743, High-Efficiency 30A, Synchronous Buck Converter 09 Aug 2011
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

TPS53355EVM-743 — High-Efficiency, 30-A,Synchronous Buck Converter With Eco-mode Control Scheme Evaluation Module

The TPS53355EVM-743 evaluation module provides a fixed 1.5-V output at up to 30 A from a 12-V input bus. The design acheives 89.5% full-load efficiency.

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Simulation model

TPS53355 Unencrypted PSpice Transient Model Package (Rev. A)

SLUM388A.ZIP (38 KB) - PSpice Model
Simulation model

TPS53355 TINA TI Reference Design

SLUM451.TSC (424 KB) - TINA-TI Reference Design
Simulation model

TPS53355 TINA TI Transient Model

SLUM452.ZIP (57 KB) - TINA-TI Spice Model
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 (...)
Calculation tool

TPS533xx Excel Calculator Tool (Rev. A)

SLURAZ7A.ZIP (466 KB)
Reference designs

PMP7828 — Non-Isolated Synchronous Buck (1.8V@8A)

The PMP7828 uitlizes the TPS53355, TPS53318, and TPS53319 buck converters using TI NexFET PowerStack technology to power Xilinx Virtex7 FPGA core and I/O, DDR memory core, and 3.3V System Rail with  high efficiency and excellent thermal performance in a small area.
Reference designs

TIDA-00510 — High Power Density 12Vin, 100W Synchronous DC/DC Step-Down Buck Converter with Inductor-On-Top

The TPS53355 Inductor-On-Top step-down buck converter design enables high power density through reduction of X-Y PCB area by placing the output inductor on top of the IC and results in 92% minimum efficiency for 66W and 100W output power designs (3.3V and 5V output)  requiring only (...)
Reference designs

PMP10449 — High Power Density Buck Converter with Integrated FET DCAP Regulator Reference Design

The PMP10449 offers a high power desnity solution, able to deliver up to 20A.  This, coupled with over 93% peak efficiency, makes this solution optimal for communications or enterprise switcing applications.
Reference designs

TIDA-00471 — High Power Density 12Vin, 12.6W Buck Converter with Integrated Inductor

The TPS53355 Inductor-On-Top step-down buck converter design enables high power density through reduction of X-Y PCB area and results in >86% efficiency with only 1.8W of power loss and 6mV of output voltage ripple requiring only 5x100uF ceramic output caps.
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.
Reference designs

PMP10488 — Adaptive Voltage Scaling Power Supply for Communication and Enterprise Storage ASIC Core Rails

This design is for implementing an ASIC Core AVS power supply using the the TPS53355 PowerStack Synchronous Buck SWIFT dc/dc converter and the LM10011 VID chip. The design accepts a 10V to 14V input and provides a 1V 20A output. The LM10011 is a precision, digitally programmable device, allowing for (...)
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Ordering & quality

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  • Ongoing reliability monitoring

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