CXAC85172高性能二次侧同步整流控制器NMOS二极管的特性进行整流伏秒平衡控制方式DCM临界和CCM模式电压二次平衡控制方法宽输出电压范围内反激电源

CXAC85172是一款高性能二次侧同步整流控制器。CXAC85172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。CXAC85172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。其适用于DCM、临界和CCM模式The CXAC85172 is a high performance controller used to secondary side synchronous rectifier (SR). The fundamental of CXAC85172 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 CXAC85172 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. It is compatible with DCM, TM and CCM operation
•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

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

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            CXAC85172是一款高性能二次侧同步整流控制器。CXAC85172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。CXAC85172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。其适用于DCM、临界和CCM模式The CXAC85172 is a high performance controller used to secondary side synchronous rectifier (SR). The fundamental of CXAC85172 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 CXAC85172 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. It is compatible with DCM, TM and CCM operation

   产品特点 返回TOP

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•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

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•手机、掌上设备适配器

•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 

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产品封装图 返回TOP

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电路原理图 返回TOP

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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