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AC/DC & DC/DC converters (integrated FET)

TPS54332

ACTIVE

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

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Data sheet

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TPS62933 ACTIVE 3.8-V to 30-V, 3-A, 200-kHz to 2.2-MHz, low-IQ synchronous buck converter in SOT-583 package This product offers wider Vin, higher frequency and lower IQ.

TPS54332

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 3.5 Vin (min) (V) 3.5 Vin (max) (V) 28 Switching frequency (min) (kHz) 1000 Switching frequency (max) (kHz) 1000 Features Enable, Light Load Efficiency, Soft Start Adjustable, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 25 Iq (typ) (µA) 82 Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 3.5 Vin (min) (V) 3.5 Vin (max) (V) 28 Switching frequency (min) (kHz) 1000 Switching frequency (max) (kHz) 1000 Features Enable, Light Load Efficiency, Soft Start Adjustable, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 25 Iq (typ) (µA) 82 Duty cycle (max) (%) 90
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • 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™ integrated circuit package
  • Use TPS62933 for a 30 VIN converter with higher frequency, lower IQ, and improved EMI
  • Create a custom design using the TPS54332 with the WEBENCH Power Designer
  • 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™ integrated circuit package
  • Use TPS62933 for a 30 VIN converter with higher frequency, lower IQ, and improved EMI
  • Create a custom design using the TPS54332 with the WEBENCH Power Designer

The TPS54332 is a 28-V, 3.5-A non-synchronous buck converter that integrates a low-R DS(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 integrated circuit package.

The TPS54332 is a 28-V, 3.5-A non-synchronous buck converter that integrates a low-R DS(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 integrated circuit package.
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TPS54232 ACTIVE 3.5-V to 28-V input, 2-A 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.
TPS54531 ACTIVE 3.5V to 28V Input, 5A, 570kHz Step-Down Converter with Eco-mode Equivalent part with higher output current, lower frequency.

Technical documentation

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Type Title Date
* Data sheet TPS54332 3.5-A, 28-V, 1-MHz, Step-Down DC/DC Converter With Eco-mode datasheet (Rev. D) PDF | HTML 15 Sep 2023
User guide TPS54332 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 08 Oct 2021
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Using TPS54335A to Create an Inverting Power Supply (Rev. A) 19 Jul 2017
Application note Understanding Eco-mode(TM) Operation 05 Dec 2016
Application note Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) 26 Oct 2012
Application note Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) 15 Sep 2010

Design & development

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

Evaluation board

TPS54332EVM-416 — TPS54332 15V Input, 2.5V Output, 3A Evaluation Module

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 (...)
User guide: PDF | HTML
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Simulation model

TPS54332 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMAS5A.ZIP (90 KB) - PSpice Model
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Calculation tool

SWIFTINV-CALC — SWIFT™ Converter Inverting Buck/Boost Calculator

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 (...)

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
TPS54040 — 3.5V to 42V Input, 0.5A Step-Down Converter with Eco-Mode TPS54060 — 3.5V to 60V Input, 0.5A Step-Down Converter with Eco-Mode TPS54060-EP — TPS54060-EP- 0.5-A, 60V Step Down DC/DC Converter with Eco-Mode TPS54140 — 3.5V to 42V Input, 1.5A Step-Down Converter with Eco-Mode TPS54160 — 3.5V to 60V Input, 1.5A Step-Down Converter with Eco-Mode TPS54231 — 3.5 to 28V Input, 2A, 570kHz Step-Down Converter with Eco-mode™ TPS54232 — 3.5-V to 28-V input, 2-A step-down converter with eco-mode TPS54233 — 3.5 to 28V Input, 2A, 300kHz Step-Down Converter with Eco-mode TPS54260 — 3.5V to 60V Input, 2.5A Step-Down Converter with Eco-Mode TPS54331 — 3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode TPS54332 — 3.5V to 28V Input, 3.5A, 1MHz Step-Down Converter with Eco-mode TPS54340 — 42 V Input, 3.5 A, Step-Down DC/DC Converter with Eco-mode™ TPS54360 — 4.5V to 60 V Input, 3.5 A Step-Down Converter with Eco-mode TPS54360B — 60-V input, 3.5-A, step-down DC/DC converter with Eco-Mode™ TPS54540 — 42 V, 5 A, Step-Down DC-DC Converter with Eco-Mode TPS54560 — 4.5V to 60 V input, 5 A step-down converter with Eco-Mode TPS54560B — 4.5-V to 60-V input, 5-A, step-down DC-DC converter with Eco-mode™ TPS54561 — 4.5V to 60V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™
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Calculation tool

SWIFTPOSNEG-CALC — TPS54160 Pos/Neg Calculation Utility Download

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 (...)

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
TPS54040 — 3.5V to 42V Input, 0.5A Step-Down Converter with Eco-Mode TPS54060 — 3.5V to 60V Input, 0.5A Step-Down Converter with Eco-Mode TPS54060-EP — TPS54060-EP- 0.5-A, 60V Step Down DC/DC Converter with Eco-Mode TPS54140 — 3.5V to 42V Input, 1.5A Step-Down Converter with Eco-Mode TPS54160 — 3.5V to 60V Input, 1.5A Step-Down Converter with Eco-Mode TPS54231 — 3.5 to 28V Input, 2A, 570kHz Step-Down Converter with Eco-mode™ TPS54232 — 3.5-V to 28-V input, 2-A step-down converter with eco-mode TPS54233 — 3.5 to 28V Input, 2A, 300kHz Step-Down Converter with Eco-mode TPS54240 — 3.5V to 42V Input, 2.5A Step-Down Converter with Eco-Mode TPS54260 — 3.5V to 60V Input, 2.5A Step-Down Converter with Eco-Mode TPS54331 — 3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode TPS54332 — 3.5V to 28V Input, 3.5A, 1MHz Step-Down Converter with Eco-mode
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Reference designs

TIDA-01243 — USB Type-C™ and Power Delivery Minidock With Video and Charging Support Reference Design

The USB Type-C® and power delivery (PD) minidock reference design provides a reference for a USB Type-C dock including audio, USB data, power and video.  This reference design has a small 2-inch by 4-inch form factor and supports both source and sink power capabilities over the (...)
Design guide: PDF
Schematic: PDF
Reference designs

PMP40154 — USB Type-C™ and USB PD DRP Reference Design with HDMI Output

The PMP40154 is a true USB Type-C™ and USB PD DRP reference design.  The reference design supports USB Type-C™ input to HDMI output display. It implements the USB PD controller and power switch TPS65986, and the alternate mode MUX HD3SS460. It is fully compatible with (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP40280 — Bi-Directional Battery Initialization System Control Board Reference Design

The PMP40280 is a battery initialization reference design solution for automotive and battery applications. The MCU TM4C123GH6PZ sets charging/discharging current and real time monitors battery voltage and charging/discharging current. It will calibrate system gain error to meet (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-00315 — 100/200Vac Input, 30W Isolated Power Supply Reference Design for Servo Drives

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 (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00609 — Self-Booting Audio System

The purpose of this reference design is to provide hardware and software tools that can be used as reference for audio systems. The new revision of the PurePath™ Console Motherboard (Rev F) adds stand-alone self-booting capabilities to allow making compelling demos with any evaluation module (...)
Test report: PDF
Schematic: PDF
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