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 Vin. 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

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Application Notes & White Papers
Doing More with Buck Regulator ICs White Paper PDF 1.07 MB
How to Improve DC/DC Converter Performance with Phase Shifting Time Delay White Paper PDF 531 KB
How to Reconfigure a Buck Converter for Multiple Outputs White Paper PDF 468 KB
How to Select a PWM Controller for Narrow On-Time Buck Conversion 简体中文 White Paper PDF 322 KB
How to Configure the Tracking and Power Sequencing of FPGAs White Paper PDF 526 KB
How to Protect Buck Regulators from Overcurrent Damage White Paper PDF 378 KB
How to Charge Supercapacitor Banks for Energy Storage 简体中文 White Paper PDF 431 KB
AN1663: Designing a Buck Converter Application Note PDF 279 KB

News & Additional Resources