Description

12v~38v 13.8v 15v 18v 19v 20v 24v 28v 30v 32v 36v 40v ac to 5v dc power supply 1a 2a 3a 5w 10w 15w ac to dc converter

I. INTRODUCTION

AC/DC converter is a voltage converter which can effectively output fixed voltage after converting input voltage AC/DC converters are divided into three categories: Boost type, boost&buck type, and buck type.

Three kinds of control can be adopted according to the demand. PWM control type has high efficiency and good output voltage ripple and noise. PFM control type has the advantage of low power consumption even if it is used for a long time, especially under small load.

PFM control is implemented when PWM/PFM converts to small load, and it is automatically converted to PWM control when heavy load occurs. At present,AC-DC converters are widely used in mobile phones, MP3, digital cameras, portable media players and other products. It belongs to chopper circuit in the classification of circuit types.

II. TECHNICAL PARAMETER