TPS54332

ACTIVE

3.5V to 28V Input, 3.5A, 1MHz Step-Down Converter with Eco-mode

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Product details

Parameters

Vin (Min) (V) 3.5 Vin (Max) (V) 28 Vout (Min) (V) 0.8 Vout (Max) (V) 25 Iout (Max) (A) 3.5 Iq (Typ) (mA) 0.082 Switching frequency (Min) (kHz) 1000 Switching frequency (Max) (kHz) 1000 Features Enable, Light Load Efficiency, UVLO Adjustable, Soft Start Adjustable Operating temperature range (C) -40 to 150 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

HSOIC (DDA) 8 19 mm² 4.9 x 3.9 open-in-new Find other Buck converters (integrated switch)

Features

  • 3.5-V to 28-V input voltage range
  • Adjustable output voltage down to 0.8 V
  • Integrated 80-mΩ high-side MOSFET supports up to 3.5-A continuous output current
  • High efficiency at light loads with a pulse-skipping Eco-Mode™
  • Fixed 1-MHz switching frequency
  • Typical 1-µA shutdown quiescent current
  • Adjustable slow-start limits inrush currents
  • Programmable UVLO threshold
  • Overvoltage transient protection
  • Cycle-by-Cycle current limit, frequency foldback and thermal shutdown protection
  • Available in thermally enhanced 8-Pin SOIC PowerPAD™ package
  • Supported by WEBENCH™ tool (http://www.ti.com/lsds/ti/analog/webench/overview.page)

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Description

The TPS54332 is a 28-V, 3.5-A non-synchronous buck converter that integrates a low-RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse-skipping Eco-Mode feature is automatically activated. Furthermore, the 1-µA shutdown supply current allows the device to be used in battery-powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during start-up and transient conditions. A cycle-by-cycle current limit scheme, frequency foldback and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54332 is available in an 8-pin SOIC PowerPAD™ package.

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Same functionality and pinout but is not an equivalent to the compared device:
TPS54232 ACTIVE 3.5V to 28V Input, 2A, 1MHz Step-Down Converter with Eco-mode This product offers lower current (2 A).
TPS54331 ACTIVE 3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode This product offers lower switching frequency.

Technical documentation

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Type Title Date
* Datasheet TPS54332 3.5-A, 28-V, 1-MHz, step-down dc-dc converter with Eco-Mode™ datasheet (Rev. C) Dec. 01, 2014
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application notes Using TPS54335A to Create an Inverting Power Supply (Rev. A) Jul. 19, 2017
Application notes Understanding Eco-mode(TM) Operation Dec. 05, 2016
Application notes Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) Oct. 26, 2012
Application notes Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) Sep. 15, 2010
User guides TPS54332EVM-416 3-A SWIFT Regulator Evaluation Module Feb. 25, 2009

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
199
Description
Features
  • 96-kHz Input Sample Rate Support
  • 2.0, Mono and 2.1 Capable
  • Operates in BTL or PBTL
  • Flexible input signal routing (USB, Coaxial SPDIF and External I2S)
  • Demonstration, Evaluation and Development environment via the PurePath Console 3 software (GUI)
EVALUATION BOARDS Download
document-generic User guide
25
Description
The TPS54332 dc/dc converter is designed to provide up to a 3.5 A output from an input voltage source of 3.5 V to 28 V. Rated input voltage and output current range for the evaluation module are given in Table 1. This evaluation module is designed to demonstrate the small printed-circuit-board areas (...)
Features
  • Integrated 80-mΩ High-Side MOSFET supports up to 3.5-A continuous output current
  • High efficiency at light loads with a Pulse-Skipping Eco-Mode™
  • 3.5-V to 28-V input voltage range
  • Fixed 1-MHz switching frequency

Design tools & simulation

SIMULATION MODELS Download
SLVMAS5A.ZIP (90 KB) - PSpice Model
SIMULATION TOOLS Download
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 (...)
Features
  • 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
  • (...)
CALCULATION TOOLS Download
Inverting Power Supply Calculator for SWIFT DC/DC with Integrated FETs
SWIFTINV-CALC The SWIFTINV-CALC Excel sheet is a complementary worksheet to the SLVA317 application note. The worksheet is used to calculate the external components needed to create a negative output voltage from a positive input voltage. The tool features several families of wide input voltage, current-mode (...)
CALCULATION TOOLS Download
Positive and Negative Output Voltage Split Rail Calculator for SWIFT DC/DC Converters
SWIFTPOSNEG-CALC The SWIFTPosNeg-CALC Excel sheet is a complementary worksheet to the SLVA369 application note.

This worksheet is used to calculate the external components needed to create a dual output (i.e. positive and negative) power supply using a step-down switching regulator and catalog off the shelf coupled (...)

Reference designs

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USB Type-C™ and Power Delivery Minidock With Video and Charging Support Reference Design
TIDA-01243 — The USB Type-C™ and Power Delivery (PD) minidock evaluation module (EVM) provides a complete reference solution for a USB Type-C dock including audio, USB data, power, and video.  The EVM has a small 2 inch by 4 inch  form factor and supports  both source and sink power (...)
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TIDA-00315 This reference design provides isolated 24Vdc, 16Vdc (x3) and 6V outputs to power the control electronics, IGBT module and fan for 100Vac/200Vac input servo drives. The power supply can be either powered directly from a single or 3- phase AC mains or can be powered from the DC link voltage. This (...)
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CAD/CAE symbols

Package Pins Download
SO PowerPAD (DDA) 8 View options

Ordering & quality

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