SNVA941A June 2020 – November 2022 LM5156 , LM5156-Q1 , LM51561 , LM51561-Q1 , LM51561H , LM51561H-Q1 , LM5156H , LM5156H-Q1
The LM5156 is a versatile non-synchronous low-side N-FET controller for switching regulators. Common configurations for the LM5156 include boost, flyback, and SEPIC regulators. This application report focuses on how to configure and design the LM5156 as a boost regulator. This procedure is generic and focuses on selecting the correct components for continuos conduction mode (CCM) boost operation. The design example was used to create the LM5156EVM-BST evaluation model and the results are presented in LM5156EVM-BST User's Guide. For typical applications, the LM5155/56 Boost Controller Quick Start Calculator can be used to efficiently complete the calculations described in this report.