XL XL401X Series Buck-Boost Design Guide

Design guide with specifications, component selection, PCB layout tips, and example circuits for the XL401X buck‑boost regulator series.


XL XL401X Series Buck-Boost Design Guide - cover page
Brand
XL
Document type
Application Note
Language
Chinese
Pages
19
File format
PDF
File size
610 KB
Published
03 October, 2026
Updated
03 October, 2026
MD5 checksum
55A4D634ECAD9538B096E0F4C5BD057C

About this manual

The XL401X series design guide provides detailed information for designing buck‑boost converters, including quick‑selection tables, typical application schematics, and system‑level design considerations such as input and output capacitor selection, inductor sizing, and free‑wheeling diode choice.

It also covers PCB layout recommendations, a complete design example with component values, and a FAQ section that addresses common issues like short‑circuit protection, undervoltage protection, and output shutdown methods. This manual is written in Chinese.

What's inside

  • Quick Selection Table
  • Typical Application Circuits
  • System Design Overview
  • Input Capacitor Selection
  • Inductor Selection
  • Freewheeling Diode Selection
  • Output Capacitor Selection
  • PCB Design Guidelines
  • Design Example
  • FAQ and Troubleshooting

Specifications

Input voltage range8 V – 30 V (typical 12 V)
Output voltage5 V
Output current3 A
Output ripple voltage0.1 V
Switching frequency180 kHz
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