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TPS5401

ACTIVE

3.5V to 42V Input, 0.5 A Step Down Converter

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TPS560430 ACTIVE SIMPLE SWITCHER® 36-V, 600-mA Buck Regulator With High-Efficiency Sleep Mode SOT23 packaging, FPWM and PFM option.

Product details

Vin (min) (V) 3.5 Vin (max) (V) 42 Vout (min) (V) 0.8 Vout (max) (V) 39 Iout (max) (A) 0.5 Iq (typ) (mA) 0.116 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Tracking, UVLO adjustable Operating temperature range (°C) -40 to 150 Rating Catalog Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 98 Type Converter
Vin (min) (V) 3.5 Vin (max) (V) 42 Vout (min) (V) 0.8 Vout (max) (V) 39 Iout (max) (A) 0.5 Iq (typ) (mA) 0.116 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Tracking, UVLO adjustable Operating temperature range (°C) -40 to 150 Rating Catalog Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 98 Type Converter
HVSSOP (DGQ) 10 14.7 mm² 3 x 4.9
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads With a Pulse-
    Skipping Eco-mode™ Control Scheme
  • 116-µA Operating Quiescent Current
  • 1.3-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start/Sequencing
  • UV and OV Power-Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V ±3.5% Internal Voltage Reference
  • MSOP10 With PowerPAD Package
  • Supported by WEBENCH
  • APPLICATIONS
    • 12-V and 24-V Industrial and Commercial
      Low-Power Systems
    • E-Meters

All other trademarks are the property of their respective owners

  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads With a Pulse-
    Skipping Eco-mode™ Control Scheme
  • 116-µA Operating Quiescent Current
  • 1.3-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start/Sequencing
  • UV and OV Power-Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V ±3.5% Internal Voltage Reference
  • MSOP10 With PowerPAD Package
  • Supported by WEBENCH
  • APPLICATIONS
    • 12-V and 24-V Industrial and Commercial
      Low-Power Systems
    • E-Meters

All other trademarks are the property of their respective owners

The TPS5401 device is a 42-V, 0.5-A, step-down regulator with an integrated high-side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the supply current to 116 µA when outputting regulated voltage with no load. Using the enable pin, shutdown supply current is reduced to 1.3 µA when the enable pin is low.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage start-up ramp is controlled by the slow-start pin that can also be configured for sequencing/tracking. An open-drain power-good signal indicates the output is within 94% to 107% of its nominal voltage.

A wide switching-frequency range allows efficiency and external component size optimization. Frequency foldback and thermal shutdown protect the part during an overload condition.

The TPS5401 is available in a 10-pin thermally enhanced MSOP PowerPAD package.

The TPS5401 device is a 42-V, 0.5-A, step-down regulator with an integrated high-side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the supply current to 116 µA when outputting regulated voltage with no load. Using the enable pin, shutdown supply current is reduced to 1.3 µA when the enable pin is low.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage start-up ramp is controlled by the slow-start pin that can also be configured for sequencing/tracking. An open-drain power-good signal indicates the output is within 94% to 107% of its nominal voltage.

A wide switching-frequency range allows efficiency and external component size optimization. Frequency foldback and thermal shutdown protect the part during an overload condition.

The TPS5401 is available in a 10-pin thermally enhanced MSOP PowerPAD package.

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Technical documentation

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Type Title Date
* Data sheet TPS5401 0.5-A, 42-V Input, Step-Down Converter datasheet (Rev. B) PDF | HTML 10 Feb 2016
Application note Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications 05 Mar 2015
Application note Designing Low Cost Flyback Power Supply Using Boost Converter (TPS61165) for HF 17 Apr 2014
Application note Improved Load Current Capability for Cap-Drop Off-Line Power Supply for E-Meter 27 Oct 2011
EVM User's guide TPS5401EVM-708 0.5-A, SWIFT™ Regulator Evaluation 10 Jan 2011

Design & development

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

Evaluation board

TPS5401EVM-708 — Evaluation Module for TPS5401 0.5A Step-Down SWIFT™ Converter

The TPS5401EVM-708 is a fully assembled and tested circuit for evaluating the TPS5401 Step Down SWIFT Converter. The TPS5401EVM-708 accepts a 7.5V to 35V input and provides a 5V output at 0.5A.
User guide: PDF
Not available on TI.com
Simulation model

TPS5401 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMAZ9A.ZIP (65 KB) - PSpice Model
Calculation tool

SLVC392 Capacitor Drop Design Calculator

Supported products & hardware

Supported products & hardware

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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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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Design guide: PDF
Schematic: PDF
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Schematic: PDF
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Schematic: PDF
Reference designs

TIDA-00202 — Interface to a HIPERFACE Position Encoder Reference Design

The TIDA-00202 reference design implements an EMC compliant industrial hybrid analog and digital interface to a HIPERFACE position encoder. A 3.3V supply RS485 transceiver with IEC-ESD and IEC-EFT protection is used for the bidirectional parameter channel. For the analog sin/cos signal (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
HVSSOP (DGQ) 10 View options

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