Home Power management AC/DC & DC/DC converters (integrated FET)
Home
Power management
AC/DC & DC/DC converters (integrated FET)

TPS54302

ACTIVE

4.5-V to 28-V Input, 3-A Output, EMI Friendly Synchronous Step-Down Converter

Order now
Data sheet

A newer version of this product is available

open-in-new Compare alternates
This product continues to be available for existing customers. New designs should consider an alternate product.
Same functionality with different pin-out to the compared device
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 30 VIN with higher frequency and lower IQ.

TPS54302

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 28 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 400 Features Enable, Light Load Efficiency, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 26 Iq (typ) (µA) 40 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 28 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 400 Features Enable, Light Load Efficiency, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 26 Iq (typ) (µA) 40 Duty cycle (max) (%) 100
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • 4.5-V to 28-V wide input voltage range
  • Integrated 85-mΩ and 40-mΩ MOSFETs for 3-A, continuous output current
  • Low 2-µA shutdown, 45-µA quiescent current
  • Internal 5-ms soft start
  • Fixed 400-kHz switching frequency
  • Frequency spread spectrum to reduce EMI
  • Advanced Eco-mode™ pulse skip
  • Peak current-mode control
  • Internal loop compensation
  • Overcurrent protection for both MOSFETs with hiccup mode protection
  • Overvoltage protection
  • Thermal shutdown
  • SOT-23 (6) package
  • 4.5-V to 28-V wide input voltage range
  • Integrated 85-mΩ and 40-mΩ MOSFETs for 3-A, continuous output current
  • Low 2-µA shutdown, 45-µA quiescent current
  • Internal 5-ms soft start
  • Fixed 400-kHz switching frequency
  • Frequency spread spectrum to reduce EMI
  • Advanced Eco-mode™ pulse skip
  • Peak current-mode control
  • Internal loop compensation
  • Overcurrent protection for both MOSFETs with hiccup mode protection
  • Overvoltage protection
  • Thermal shutdown
  • SOT-23 (6) package

The TPS54302 device is a 4.5-V to 28-V input voltage range, 3-A synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation, and 5-ms internal soft start to reduce component count.

By integrating the MOSFETs and employing the SOT-23 package, the TPS54302 device achieves the high power density and offers a small footprint on the PCB.

Advanced Eco-mode implementation maximizes the light load efficiency and reduces the power loss.

In the TPS54302 device, the frequency spread spectrum operation is introduced for EMI reduction.

Cycle-by-cycle current limit in both high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the present time.

The TPS54302 device is a 4.5-V to 28-V input voltage range, 3-A synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation, and 5-ms internal soft start to reduce component count.

By integrating the MOSFETs and employing the SOT-23 package, the TPS54302 device achieves the high power density and offers a small footprint on the PCB.

Advanced Eco-mode implementation maximizes the light load efficiency and reduces the power loss.

In the TPS54302 device, the frequency spread spectrum operation is introduced for EMI reduction.

Cycle-by-cycle current limit in both high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the present time.
filter Find other AC/DC & DC/DC converters (integrated FET)
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
TPS54202 ACTIVE 4.5V to 28V Input, 2A Output, EMI Friendly Synchronous Step-Down Converter Lower current (2A) version
TPS54308 ACTIVE 4.5-V to 28-V Input, 3-A output, synchronous 350-kHz FCCM step-down converter Equivalent part with FCCM mode.
Similar functionality to the compared device
TPSM84209 ACTIVE 4.5-V to 28-V input, 1.2-V to 6-V output, 2.5-A power module Simplify your design with an integrated-inductor power module.

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 8
Type Title Date
* Data sheet TPS54302 4.5-V to 28-V Input, 3-A Output, EMI-Friendly Synchronous Step-Down Converter datasheet (Rev. B) PDF | HTML 16 Apr 2021
User guide TPS54302 Step-Down Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 11 Oct 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Application note Using the TPS54x02 to Create an Inverting Power Supply 15 Jun 2018
Application note SOT23 Package Thermal Consideration 02 Mar 2018
Technical article Upgrade your TO-220 linear regulator with a pin-compatible buck power module PDF | HTML 22 Sep 2017
Technical article Use an ULQ buck regulator for energy-efficient power products PDF | HTML 12 Sep 2017
Application note How to Design a Thermally-Efficient Integrated BLDC Motor Drive PCB (Rev. A) 05 Feb 2017

Design & development

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

Evaluation board

TPS54302EVM-716 — TPS54302 Synchronous Step-Down Converter Evaluation Module

The TPS54302EVM-716 is a fully assembled and tested circuit for evaluating the TPS54302 synchronous step-down SWIFT™ converter. The EVM converts a 8-V to 28-V input voltage to a regulated 5-V output voltage that delivers up to 3 A. The TPS54302 delivers 40-μA ultra-low quiescent supply (...)

User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS54302 Unencrypted PSpice Transient Model (Rev. A)

SLVMBL9A.ZIP (103 KB) - PSpice Model
Download
Reference designs

PMP40937 — 4s battery charger reference design

This reference design is for 4-cell battery charging applications such as vacuum robot or robotic lawn mower, etc. It employs the buck battery charger BQ25672 with a wide input and output range for 1-4 cell battery charging. External ship FET is introduced to minimize the battery leakage current (...)
Test report: PDF
Reference designs

TIDA-010055 — Non-isolated power architecture with diagnostics reference design for protection relay modules

This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
SOT-23-THN (DDC) 6 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos