CXAC85171高性能二次侧同步整流控制器控制NMOS二极管的特性进行整流实现系统节能采用伏秒平衡控制方法内置系统频率检测DCM临界和CCM模式

CXAC85171是一款高性能二次侧同步整流控制器。CXAC85171控制NMOS以实现近乎理想二极管的特性进行整流，从而实现系统节能。CXAC85171采用伏秒平衡控制方法而不直接与MOSFET的漏端相连，可实现更宽的输出电压应用范围。CXAC85171内置系统频率检测，在极轻负载时进入待机模式。其适用于DCM、临界和CCM模式
•适用5V-24V系统
•伏秒平衡控制方式
•适用DCM、临界和CCM模式
•短路保护
•SOT23-6和SOP-8 封装
•符合RoHS规范及Pb-Free

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

---

       CXAC85171是一款高性能二次侧同步整流控制器。CXAC85171控制NMOS以实现近乎理想二极管的特性进行整流，从而实现系统节能。CXAC85171采用伏秒平衡控制方法而不直接与MOSFET的漏端相连，可实现更宽的输出电压应用范围。CXAC85171内置系统频率检测，在极轻负载时进入待机模式。其适用于DCM、临界和CCM模式The CXAC85171 is a high performance controller used to secondary side synchronous rectifier (SR). The fundamental of CXAC85171 is utilized N-channel MOSFET power devices used for secondary side synchronous to emulate a near-ideal diode rectifier. This method not only directly reduces power dissipation of the rectifier but also reduces primary side losses as well. The CXAC85171 is applied voltage-second balancing control method and not directly connected to the MOSFET drain, so it is ideal for flyback power supplies over the wide-output voltage range. The SR drive turn-off threshold is not related to the MOSFET RDS(on), which allows optimizing for maximum conduction time. The CXAC85171 offers a frequency detector to automatically switch to standby mode during low power conditions and pin fault protections. It is compatible with DCM, TM and CCM operation

   产品特点 返回TOP

---

•适用5V-24V系统

•伏秒平衡控制方式

•适用DCM、临界和CCM模式

•短路保护

•SOT23-6和SOP-8 封装

•符合RoHS规范及Pb-Free

Secondary-Side SR Optimized Controller for 5V to

24V Flyback Systems

Volt-Second Balance SR On-Time Control

Compatible with Primary-Side and Second-Side

Control

CCM Operation Compatibility

Short Pin Fault Protection

Available in SOP-8 and SOT23-6 Packages

RoHS Compliant and 100% Lead (Pb)-Free

Halogen-Free

   应用范围 返回TOP

---

•电视、显示器、网通电源等

•其它消费电子电源。

Switching Mode Power Supply(DCM, TM and CCM)

Chargers for Smart Phones and Tablets

High Efficiency Auxiliary Power in Server

Desktop and Appliance Application

   技术规格书（产品PDF) 返回TOP 

---

     需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！

 

产品封装图 返回TOP

---

a

电路原理图 返回TOP

---

相关芯片选择指南 返回TOP     更多同类产品......

---

AC/DC电源管理
Part   Number	remark	Topology	Control  Method	Frequency  (max)(kHz)	UVLO  Thresholds  On/Off (V)	Controller /Driver	Package
CXAC85170	Synchronous Rectifier Controller	SSR	Volt-second  Balance	150	3.8/3.5	Controller	SOT23-6
CXAC85171	Synchronous Rectifier Controller	SSR	Volt-second  Balance	150	3.8/3.5	Controller	SOT23-6
CXAC85172	Synchronous Rectifier Controller	PSR	Volt-second  Balance	150	3.8/3.5	Controller	SOT23-6
CXAC85173	Constant-Voltage, Constant-Current Controller with Primary-Side   Regulation	PSR	current	100	22/7.8	Controller	SOT23-6
CXAC85174	Constant-Voltage, Constant-Current Controller	SSR	current	100	22/6.5	Controller	SOT23-6;SOP-8