TPS54202

ACTIVE

4.5V to 28V Input, 2A Output, EMI Friendly Synchronous Step-Down Converter

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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 28 Vout (Min) (V) 0.6 Vout (Max) (V) 26 Iout (Max) (A) 2 Iq (Typ) (mA) 0.04 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 500 Features Enable, Light Load Efficiency, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO Adjustable, Soft Start Fixed Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

SOT-23-THN (DDC) 6 SOT-23-THN (DDC) 6 5 mm² 2.9 x 1.6 open-in-new Find other Buck converters (integrated switch)

Features

  • 4.5-V to 28-V Wide Input voltage Range
  • Integrated 148-mΩ and 78-mΩ MOSFETs for 2-A, Continuous Output Current
  • Low 2-µA Shutdown, 45-µA Quiescent Current
  • Internal 5-mS Soft-Start
  • Fixed 500-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
  • Over Voltage Protection
  • Thermal Shutdown
  • SOT-23 (6) Package
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Description

The TPS54202 is a 4.5-V to 28-V input voltage range, 2-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 TPS54202 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 TPS54202, 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.

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Technical documentation

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Type Title Date
* Datasheet TPS54202 4.5-V to 28-V Input, 2-A Output, EMI Friendly Synchronous Step Down Converter datasheet (Rev. A) Jan. 11, 2017
Application notes L1 and L2 EV Charger Electric Vehicle Service Equipment Design Considerations (Rev. A) Apr. 14, 2020
Selection guides Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
Application notes Low Dropout Operation in a Buck Converter (Rev. A) Apr. 01, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Using the TPS54x02 to Create an Inverting Power Supply Jun. 15, 2018
Application notes SOT23 Package Thermal Consideration Mar. 02, 2018
Technical articles Use an ULQ buck regulator for energy-efficient power products Sep. 12, 2017
Application notes 800VA Pure Sine Wave Inverter's Reference Design (Rev. A) Aug. 01, 2017
Technical articles Powering the next generation of home appliances: How to get more from less Oct. 13, 2016
User guides TPS54202EVM-716 2-A Regulator Evaluation Module User's Guide Apr. 12, 2016

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
49
Description
The TPS54202 is a 28-V, 2-A, ultra-low quiescent supply current (IQ), synchronous monolithic buck converter with integrated MOSFETs. The TPS54202 enables small designs by integrating the MOSFETs, internal compensation and implementing current mode control to reduce external component count (...)
Features
  • Two 148mΩ/78mΩ MOSFETs for 2A Continuous Output Current
  • 0.6 V Internal Voltage Reference
  • Pulse Skipping Boosts Efficiency at Light Loads
  • Monotonic Start-Up into Pre-biased Outputs
  • Ultra-Low Iq: 40μA

Design tools & simulation

SIMULATION MODELS Download
SLVMBJ5C.ZIP (102 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
  • (...)

Reference designs

REFERENCE DESIGNS Download
150-VDC - 430-VDC input, multiple output valley-switching flyback reference design
PMP30825 — This 10-W non-isolated flyback reference design uses the UCC28742 controller to generate four outputs (5 V at 150 mA, 12 V at 690 mA, 15 V at 80 mA, 18 V at 20 mA). The controller provides constant-voltage and constant-current regulation. Transistors are used in place of an optocoupler feedback (...)
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REFERENCE DESIGNS Download
Non-isolated power architecture with diagnostics reference design for protection relay modules
TIDA-010055 — 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 (...)
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REFERENCE DESIGNS Download
5V 1A, Low EMI, 94% Efficiency DC/DC Module in Single Layer TO-247 Form Factor Reference Design
TIDA-00948 — The TI Design TIDA-00948 demonstrates a 15mmx20mm, 94% efficiency, low electromagnetic interference (EMI) DC/DC module with the TPS54202, replacing Low DropOut Regulator (LDO) in major home appliance applications. The high efficiency eliminates the need of heat sink for smaller and cheaper solution (...)
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REFERENCE DESIGNS Download
5V 1A, Low EMI, 94% Efficiency DC/DC Module in Dual Layer TO-220 Form Factor Reference Design
TIDA-00946 — The TI Design TIDA-00946 demonstrates a 10.5mmx14.5mm, 94% efficiency, low electromagnetic interference (EMI) DC/DC module with the TPS54202, replacing Low DropOut Regulator (LDO) in major home appliance applications. The high efficiency eliminates the need of heat sink for smaller and cheaper (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
3.3V 1A, Low EMI, 92% Efficiency DC/DC Module in Dual Layer TO-220 Form Factor Reference Design
TIDA-00947 — The TI Design TIDA-00947 demonstrates a 10.5mmx14.5mm, 92% efficiency, low electromagnetic interference (EMI) DC/DC module with the TPS54202, replacing Low DropOut Regulator (LDO) in major home appliance applications. The high efficiency eliminates the need of heat sink for smaller and cheaper (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
3.3V 1A, Low EMI, 92% Efficiency DC/DC Module in Single Layer TO-247 Form Factor Reference Design
TIDA-00949 — The TI Design TIDA-00949 demonstrates a 15mmx20mm, 92% efficiency, low electromagnetic interference (EMI) DC/DC module with the TPS54202, replacing Low DropOut Regulator (LDO) in major home appliance applications. The high efficiency eliminates the need of heat sink for smaller and cheaper solution (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
IR LED Illumination and ICR Control Reference Design for IP Network Cameras With Day/Night Vision
TIDA-01586 — This reference design showcases an Infrared LED illumination sub-system for Internet Protocol (IP) network cameras with day and night vision. The system features a cut filter control, LED dimming, ambient light measuring and ballasting for current of each IR LED string. Ballasting is an alternative (...)
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REFERENCE DESIGNS Download
Universal 350W CCM PFC with >98% Efficiency and Small Form Factor Reference Design
TIDA-00776 — The TIDA-00776 design  is a 350-W cost competitive power factor regulator converter designed for refrigerators and other appliances applications. This reference design is a Continuous-Conduction-Mode (CCM) boost converter that uses TI’s UCC28180 PFC controller and has all the necessary (...)
document-generic Schematic document-generic User guide

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Package Pins Download
SOT-23-THIN (DDC) 6 View options

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