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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
TECHNICAL RESOURCES
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 (...)