TPS5402

ACTIVE

3.5V to 28V Input, 1.7A Output, Non-Synchronous Step-Down Regulator with Integrated MOSFET

Top

Product details

Parameters

Vin (Min) (V) 3.5 Vin (Max) (V) 28 Vout (Min) (V) 0.8 Vout (Max) (V) 26 Iout (Max) (A) 1.7 Iq (Typ) (mA) 0.1 Iq (Typ) (uA) 100 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 1100 Features Light Load Efficiency, Soft Start Adjustable, Light Load Efficiency, Spread Spectrum, Fixed Output Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

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

Features

  • 3.5-V to 28-V Wide Input Voltage Range
  • Up to 1.7-A Maximum Continuous Output Loading Current
  • Pulse Skipping Mode to Achieve High Light Load Efficiency
  • High Light Load Efficiency
  • Frequency Spread Spectrum to Reduce EMI
  • Adjustable 50-kHz to 1.1-MHz Switching Frequency Set by an External Resistor
    (Leave pin ROSC floating. Set frequency to 120 kHz and ground connection to 70 kHz)
  • Frequency Spread Spectrum to Ease EMI Issue
  • Peak Current-Mode Control
  • Cycle-by-CycleOver Current Protection
  • External Soft Start
  • Available in SOIC8 Package
open-in-new Find other Buck converters (integrated switch)

Description

The TPS5402 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 3.5 V to 28 V. Current mode control with internal slope compensation is implemented to reduce component count.

TPS5402 also features a light load pulse skipping mode, which allows for a power loss reduction from the input power supply to the system at light loading.

The switching frequency of the converters can be set from 50 kHz to 1.1 MHz with an external resistor. Frequency spread spectrum operation is introduced for EMI reduction.

A cycle-by-cycle current limit with frequency fold back protects the IC at over loading condition.

open-in-new Find other Buck converters (integrated switch)
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 4
Type Title Date
* Datasheet Monolithic Non-Synchronous Step-Down Regulator With Integrated MOSFET . datasheet Sep. 12, 2012
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Lead-Acid Charger and LED Driver using TPS5402 (Rev. A) Jun. 13, 2013
User guides TPS5402EVM User's Guide Sep. 12, 2012

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
10
Description
The Texas Instruments TPS5402EVM evaluation module (EVM) helps designers evaluate the performance of the TPS5402 non-synchronous step-down regulator with integrated MOSFET. The TPS5402 is designed to provide an adjustable output and 1.7-A continuous current with an operational range of 4.5 V to 28 V (...)
Features
  • Adjustable Output
  • 4.5-V to 28-V Wide Input Voltage Range
  • Up to 1.7-A Maximum Continuous Output Loading Current
  • Pulse Skipping Mode to Achieve High Light Load Efficiency
  • Over 80% Efficiency at 10-mA Loading

Design tools & simulation

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
  • (...)

Reference designs

REFERENCE DESIGNS Download
Single Chip Drive for Industrial Communications and Motor Control
TIDEP0025 This TI design implements a hardware interface solution based on the HEIDENHAIN EnDat 2.2 standard for position or rotary encoders. The platform also allows designers to implement real-time EtherCAT communications standards in a broad range of industrial automation equipment. It enables designers (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Sercos III Slave For AM437x Communication Development Platform Reference Design
TIDEP0039 The TIDEP0039 Sercos III Slave For AM437x Communication Development Platform Reference Design combines the AM437x Sitara processor family from Texas Instruments (TI) and the Sercos III media access control (MAC) layer into a single system-on-chip (SoC) solution. Targeted for Sercos III slave (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
ARM MPU with Integrated BiSS C Master Interface Reference Design
TIDEP0022 Implementation of BiSS C Master protocol on Industrial Communication Sub-System (PRU-ICSS). The design provides full documentation and source code for Programmable Realtime Unit (PRU).
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
ARM MPU with Integrated HIPERFACE DSL Master Interface Reference Design
TIDEP0035 Implementation of HIPERFACE DSL Master protocol on Industrial Communication Sub-System (PRU-ICSS). The two wire interface allows for integration of position feedback wires into motor cable.  Complete solution consists of AM437x PRU-ICSS firmware and TIDA-00177 transceiver reference design.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
EnDat 2.2 System Reference Design
TIDEP0050 The TIDEP0050 TI Design implements the EnDat 2.2 Master protocol stack and hardware interface solution based on the HEIDENHAIN EnDat 2.2 standard for position or rotary encoders. The design is composed of the EnDat 2.2 Master protocol stack, half-duplex communications using RS485 transceivers and (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Offline AC/DC 120W Multi-Output Flyback Power Supply Reference Design
PMP4408 The PMP4408 is a universal AC input, 120W flyback converter reference design. The LM5023 Quasi Resonant Flyback converter was chosen to get 2 high-efficiency isolated outputs. Additionally a downstream Buck converter, the TPS5402 enables 2 high-efficiency non-isolated outputs. The QR Flyback design (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
6-12V Input to 1.5V/1.5A Output Reference Design with CC/CV Controls
PMP10928 The PMP10928 reference design uses the TPS5402 non-synchronous Buck controller along with INA213 current shunt monitor to achieve CC/CV control for an 1.5V/1.5A output from 6-12V input voltage.  +/-5% voltage regulation in CV mode and +/-5% in CC mode is achieved in this design. It is notable (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Ten Output QR Flyback and Buck Converter Reference Design
PMP10822 The PMP10822 reference design utilizes two QR flyback, and four buck converters. The efficiency for the 12V and 24V flyback approaches 87%, while the 16V buck converter has efficiency greater than 89%.
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

Ordering & quality

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

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

Related videos