Buck (step-down)
Efficient conversion of an input voltage to a lower output voltage
High-efficiency step-down solutions
With over 1000 unique devices, you can select from the industry’s most comprehensive portfolio of high-efficiency DC/DC step-down (buck) switching regulators. This extensive family of products includes all types of step-down switching regulators, ranging from the flexibility of a controller IC to the high-integration and simplicity of a buck power module. From a 1-V to 100-V input and 50-mA to 420-A output, you can count on us to have a step-down voltage regulator that meets your system’s requirements.
Browse products by category
Power modules (integrated magnetics)
The simplest and smallest option for step-down DC/DC voltage conversion.
Converters (integrated FET)
Balance simplicity and flexibility with integrated-FET step-down voltage converters
Controllers (external FET)
Achieve high reliability in high-power, thermally-demanding applications
Discover featured applications
Design high-performance, cost-effective factory automation systems with TI buck coverters 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
- 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
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
- 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
- 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
- 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
- Understanding the trade-offs and technologies to increase power density (Rev. C) – White paper
- Advanced Power-Converter Features for Reducing EMI – More literature
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
- 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
- Point-of-Load Solutions for Network Interface Cards (NIC) – Application note
- Point-of-Load Designs in Data Center Apps for Intel Xeon Sapphire Rapids Scalabl (Rev. B) – Application note
- WEBENCH-CIRCUIT-DESIGNER – Create customized power supply and active filter circuits
- PSPICE-FOR-TI – PSpice® for TI design and simulation tool
- FUSION_DIGITAL_POWER_DESIGNER – Digital Power Software
Design & development resources
WEBENCH® Power Designer
PSpice® for TI design and simulation 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 (...)