Step-down (Buck)

A buck converter, also known as a step-down converter, is a DC/DC power converter that provides voltage step down and current step up. The converter reduces the voltage when the power source has a higher voltage than V_IN. A buck converter generally provides the most efficient solution with the smallest external components.

Unsure if a low-powered linear regulator or highly efficient switching regulator is a better option for your design? Learn more about Linear vs. Switching Regulators.

Documentation

Document title Title		Document type Type	Date Date
	AN1663: Designing a Buck Converter PDF 279 KB	Application Note	Jan 19, 2004
	Doing More with Buck Regulator ICs PDF 1.07 MB	White Paper	Oct 30, 2020
	How to Reconfigure a Buck Converter for Multiple Outputs PDF 468 KB	White Paper	Aug 15, 2018
	How to Configure the Tracking and Power Sequencing of FPGAs PDF 526 KB	White Paper	Aug 10, 2018
	How to Select a PWM Controller for Narrow On-Time Buck Conversion PDF 322 KB 简体中文	White Paper	Aug 10, 2018
	How to Protect Buck Regulators from Overcurrent Damage PDF 378 KB	White Paper	Feb 8, 2018
	How to Charge Supercapacitor Banks for Energy Storage PDF 431 KB 简体中文	White Paper	Jan 31, 2018
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Videos & Training

High-performance 80V Dual-phase Buck and Boost Controllers for GaN FETs

An overview of the industry’s first high-performance 80V dual-phase buck and boost controllers optimized to drive GaN FETs. With high efficiency, tight load regulation and current sharing, these devices deliver ideal power solutions for industrial automation, telecommunications, medical and automotive applications.

Video List

High-performance 80V Dual-phase Buck and Boost Controllers for GaN FETs

12V Sync Buck Regulator Family Delivers Up to 14A

ISL85003/3A Sync Buck Regulators

ISL78268 55V Buck Controller and Eval Board

ISL8018 8A Synchronous Buck Regulator Webinar

ISL8002B 2A Synchronous Buck Regulator Webinar

ISL8117 Synchronous Step-down PWM Controller

ISL8117/A 60V Synchronous Buck Controller Webinar