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


Product details


Vin (Min) (V) 4.5 Vin (Max) (V) 28 Vout (Min) (V) 0.6 Vout (Max) (V) 26 Iout (Max) (A) 2 Iq (Typ) (uA) 40 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 500 Features Enable, Light Load Efficiency, Pre-Bias Start-Up, 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 5 mm² 2.9 x 1.6 open-in-new Find other Buck converters (integrated switch)


  • 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
  • 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
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The TPS54202H 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 TPS54202H 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.

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
* Data sheet TPS54202H 4.5-V to 28-V Input, 2-A Output, SWIFT™ Synchronous Step Down Voltage Converter datasheet (Rev. A) Apr. 06, 2021
Application note Simple Solution for EMI Filter Stability Issue in DC/DC Converters (Rev. A) Apr. 25, 2019
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application note Field Oriented Control Made Easy for Brushless DC Motors Using Smart Gate Drive (Rev. B) Aug. 22, 2018
Application note Using the TPS54x02 to Create an Inverting Power Supply Jun. 15, 2018
User guide TPS54202HEVM-716 2-A Regulator Evaluation Module User's Guide Apr. 27, 2016

Design & development

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Hardware development

document-generic User guide

The TPS54202HEVM-716 is a fully assembled and tested circuit for evaluating the TPS54202H synchronous step-down SWIFT™ converter. The EVM converts a 4.2-V to 28-V input voltage to a regulated 5-V output voltage that delivers up to 2 A. The TPS54202H enables small designs by integrating the (...)

  • 4.2-V to 28-V input voltage range
  • 40-μA ultra-low quiescent supply current (IQ)
  • 94.06% efficiency (VIN = 12-V, IO = 1-A)
  • 0.6-V internal voltage reference
  • 2-μA shutdown quiescent current
  • High efficiency at light loads with pulse-skipping eco-mode
  • Monotonic start-up into pre-biased outputs
  • Synchronous (...)

Design tools & simulation

SLVMBJ7A.ZIP (94 KB) - PSpice Model
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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 (...)
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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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TIDA-010034 — Power over Ethernet (PoE) enables power to be delivered over the same ethernet cable as data with no danger of cross-talk, interference, or corruption of the data streams. This reference design showcases end-to-end power tree for an IP network camera powered using PoE or 12-V adapter based on the (...)
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SOT-23-THIN (DDC) 6 View options

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