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CR3017

CategoryPower/power management    Switching power supply chip   
File Size840KB,9 Pages
ManufacturerChip-Rail
Websitehttp://www.chiprail.com
Chengdu Qichen Microelectronics Co., Ltd. (stock code: 870057) is a high-tech enterprise specializing in the design, production and sales of integrated circuits and system products. It is also an integrated circuit design enterprise certified by the Ministry of Industry and Information Technology and an innovative enterprise supported by Chengdu Hi-tech Zone. Qichen Microelectronics focuses on the design, development and sales of high-performance analog and mixed-signal integrated circuit products. With communications, consumer electronics, computers and other markets as its target, it is committed to becoming a first-class domestic analog and mixed-signal integrated circuit design company. Qichen Microelectronics' core technology won the second prize of the National Science and Technology Progress Award in 2016. Qichen Microelectronics has a core technical team composed of well-known domestic integrated circuit design experts, providing customers with integrated circuit products with competitive performance, quality and cost, and providing system application solutions and professional technical services.
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CR3017
自供电同步整流开关
主要特点
隔离型的同步整流控制应用
可工½于CCM模式、DCM模
式和QR模式
最大工½频率400kHz
芯片VDD欠压保护
精简的外围电路
较高的系统效率,
½系统更容易满足更
高½效的要求
无需辅助绕组供电,
可自行供电到稳定
电压,
适用输出电压范围更½的快充应
SOP-8L绿色封装
基本应用
AC/DC电源适配器
手机快充充电器
产品概述
CR3017
是一款高性½同步整流开关芯片,适用于隔离型的同步整流应用。CR3017 支
持前级主控芯片
DCM,QR
CCM
多种工½方式。无需辅助绕组或输出电压供电,可自
行供电到稳定电压,适用输出电压范围更½的快充应用。
CR3017
内½一个
N
沟道的功率
MOS
开关管,用来替换传统的整流二极管。由于功率
MOS
管的导通压降远小于整流二极管,因此它可以有效的提升系统的½换效率,同时降½
热损耗,从而更容易满足高½效的要求。CR3017 高度集成的功½和精简的系统应用电路更
适合于小功率充电器和适配器等对效率和½积有较高要求的应用。
CR3017
通过内部电路将同步整流开关管的正向压降调整在
70mV,½其½在正向压降
变为负值时½快关断同步整流开关管,提高同步整流效率。CR3017 采用
SOP-8L
封装。
V1.1
1/9
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