Buck (step-down) | TI.com (2024)

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Buck (step-down)

Efficient conversion of an input voltage to a lower output voltage

High-efficiency step-down solutions

Our portfolio of high-efficiency DC/DC step-down buck switching regulators and low-dropout (LDO) linear regulators include more than 7,000 individual devices, from buck converters with the flexibility of a controller integrated circuit, to highly integrated buck power modules, to LDO linear regulators designed to filter power-supply noise for sensitive loads. With 1V to 100V input voltage ranges and 50mA to 420A output voltage ranges, there's a step-down voltage regulator that meets your system requirements.

Browse products by category

Power modules (integrated magnetics)

The simplest and smallest option for step-down DC/DC voltage conversion

  • parametric-filter Low VIN<7V
  • parametric-filter Mid VIN7V to 30V
  • parametric-filter Wide VIN>30V
Linear & low-dropout (LDO) regulators

Generate low-noise rails with minimal input-voltage headroom using a simple linear solution

  • parametric-filter Low VIN<7V
  • parametric-filter Mid VIN7V to 30V
  • parametric-filter Wide VIN>30V
Converters (integrated FET)

Balance simplicity and flexibility with integrated-FET step-down voltage converters

  • parametric-filter Low VIN<7V
  • parametric-filter Mid VIN7V to 30V
  • parametric-filter Wide VIN>30V
Controllers (external FET)

Achieve high reliability in high-power, thermally-demanding applications

  • parametric-filter VIN<7V
  • parametric-filter VIN7V to 40V
  • parametric-filter VIN>40V

Discover featured applications

Factory automation and control

Design high-performance, cost-effective factory automation systems with TI buck converters and modules

HEV and EV

Meet system power requirements of HEVs and EVs with TI buck regulators

Infotainment and cluster

Expand functionality in automotive infotainment and cluster systems with TI buck converters and controllers

Data center and enterprise computing

Our DC/DC converters and power modules address your power-density and thermal design challenges for enterprise applications

Design high-performance, cost-effective factory automation systems with TI buck converters and modules

Our power-dense buck regulators meet electromagnetic interference limits to help lower system costs while maintaining high performance for factory automation applications.

  • Easy-to-use buck regulators with a wide input voltage range to handle transients.
  • Great efficiency and thermal performance across specified load ranges.
  • Buck modules include integrated inductors allowing for smaller solution size and lower bill-of-materials count.

Featured resources

END-EQUIPMENT / SUB-SYSTEM

  • Communication module – nonsolated DC/DC power supply
  • Position sensor – nonsolated DC/DC power supply (main)
  • HMI panel – nonsolated DC/DC power supply
  • Computer on module – point-of-load regulators

REFERENCE DESIGNS

  • TIDA-010048 – Channel-to-channel isolated analog input module reference design
  • PMP15039 – Two-Stage Power Supply Reference Design for Field Transmitters
  • PMP15040 – Wide Vin Power Supply Reference Design for Space-Constrained Industrial Sensors

PRODUCTS

  • TPSM365R3 – 3-V to 65-V input, 1-V to 13-V output, 0.3-A synchronous buck converter power module
  • LMR43620 – 3-V to 36-V, 2-A low-EMI synchronous buck regulator with low IQ
  • TPS62A02 – 2.5V to 5.5V input, 2A high-efficiency step-down converter in SOT563 and SOT23 packages

Meet system power requirements of HEVs and EVs with TI buck regulators

Design engineers have many considerations to overcome while managing strict cost and board space targets. We designed and developed our power devices with these challenges in mind.

  • High operating temperature range.
  • Supports strict electromagnetic compatibility standards such as Comité International Spécial des Perturbations Radioélectriques Class 5.
  • Wide input-voltage capability to manage large-input transient conditions.
  • Availability in both leaded and nonleaded packages.

Featured resources

END-EQUIPMENT / SUB-SYSTEM

  • Traction inverter-high voltage – nonisolated DC/DC power supply
  • 48-V to 12-V DC/DC converter – power-management integrated circuit
  • Starter and generator – system basis chip

PRODUCTS

  • TPSF12C3 – Common-mode active EMI filter (AEF) for three-phase systems
  • LMR38020-Q1 – Automotive SIMPLE SWITCHER® power converter 4.2-V to 80-V, 2-A, synchronous buck converter
  • LM5180-Q1 – Automotive 65-VIN no-opto flyback converter with 100-V, 1.5-A integrated MOSFET

TECHNICAL RESOURCES

  • Optimizing Line and Load Regulation in Automotive, 48-V Battery and eBike Apps – Application note

    PDF|HTML

  • How a Stand-Alone Active EMI Filter IC Shrinks Common-Mode Filter Size – Blog

DESIGN TOOLS AND SIMULATION

  • LMR38020QEVM – LMR38020-Q1 evaluation module SIMPLE SWITCHER® power converter 80-V, 2-A, synchronous buck, 40-µA IQ

Expand functionality in automotive infotainment and cluster systems with TI buck converters and controllers

Today's automotive infotainment and cluster systems inform, entertain, and connect modern drivers. As we look to the future, the amount of functionality within these systems is only expected to increase. This means more processing power within the same physical space. In order to power these next-generation systems, power converters need to excel in two key aspects.

  • High output power-to-package size ratio without overheating.
  • Minimized conducted and radiated electromagnetic interference.

Featured resources

END-EQUIPMENT / SUB-SYSTEM

  • Digital cockpit processing unit – application processor
  • Automotive center information display – off-battery power supply

REFERENCE DESIGNS

  • PMP30670 – Automotive wide VIN front-end reference design for digital cockpit processing units
  • PMP22030 – Efficient, low-heat, CISPR 25 class 5-compliant power reference design for infotainment display

PRODUCTS

  • LM61495-Q1 – 10-A automotive buck converter optimized for power density and low EMI
  • TPS62813-Q1 – Automotive 2.75-V to 6-V, 3-A step-down converter with fixed Fsw and SYNC in 2x3mm wettable-flanks
  • TPS62873-Q1 – Automotive 2.7-V to 6-V input, 15-A, stackable, synchronous buck converter

TECHNICAL RESOURCES

  • Understanding the trade-offs and technologies to increase power density (Rev. C) – White paper

    PDF|HTML

  • Advanced Power-Converter Features for Reducing EMI – More literature

    PDF|HTML

Our DC/DC converters and power modules address your power-density and thermal design challenges for enterprise applications

Data centers are crucial for business continuity and reliable communications. Our power-management solutions enable high availability and efficiency when powering high-performance processors while providing regulated power.

  • High efficiency, excellent thermal performance and PMBus with telemetry keep data centers cooler while saving energy.
  • Fast transient response for reducing output filter size.
  • High output-voltage accuracy to power the latest advanced processors.

Featured resources

END-EQUIPMENT / SUB-SYSTEM

  • Rack server motherboard – CPU and memory power
  • Smart network interface card – point-of-load power
  • Network attached storage - enterprise – nonisolated DC/DC power

PRODUCTS

  • TPS54J061 – 4-V to 16-V input, 6-A synchronous buck converter, 600-mV reference voltage and hiccup current limit
  • TPS54KB20 – 4-V to 16-V input, 25-A remote sense synchronous step-down converter

HARDWARE DEVELOPMENT

  • TPS546D24AEVM – Fixed frequency synchronous buck converter 2-phase evaluation module
  • TPS54KB20EVM – TPS54KB20 step-down converter evaluation module
  • TPS54J061EVM – 2.7-V to 16-V, 6-A, step-down converter evaluation board

TECHNICAL RESOURCES

  • Point-of-Load Solutions for Network Interface Cards (NIC) – Application note

    PDF|HTML

  • Point-of-Load Designs in Data Center Apps for Intel Xeon Sapphire Rapids Scalabl (Rev. B) – Application note

    PDF|HTML

DESIGN TOOLS AND SIMULATION

  • WEBENCH-CIRCUIT-DESIGNER – Create customized power supply and active filter circuits
  • PSPICE-FOR-TI – PSpice® for TI design and simulation tool

SOFTWARE DEVELOPMENT

  • FUSION_DIGITAL_POWER_DESIGNER – Digital Power Software

Design & development resources

Design tool

WEBENCH® Power Designer

WEBENCH® Power Designer creates customized power-supply circuits based on your requirements. The environment gives you end-to-end power-supply design capabilities that save you time during all phases of the design process.

Simulation tool

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 (...)

Design tool

Power Stage Designer™ software tool of most commonly used switchmode power supplies

Power Stage Designer is a JAVA-based tool that helps speed up power-supply designs as it calculates voltages and currents of 21 topologies based on user inputs. Additionally, Power Stage Designer contains a Bode plotting tool and a helpful toolbox with various functions to make power supply design (...)

Buck (step-down) | TI.com (2024)
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