同步整流控制器Synchronous Rectifier Controller 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。

   产品概述 返回TOPrAh嘉泰姆

       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TOPrAh嘉泰姆

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•适用5V-24V系统rAh嘉泰姆

•伏秒平衡控制方式rAh嘉泰姆

•适用DCM、临界和CCM模式rAh嘉泰姆

•短路保护rAh嘉泰姆

•SOT23-6和SOP-8 封装rAh嘉泰姆

•符合RoHS规范及Pb-FreerAh嘉泰姆

Secondary-Side SR Optimized Controller for 5V torAh嘉泰姆

24V Flyback SystemsrAh嘉泰姆

Volt-Second Balance SR On-Time ControlrAh嘉泰姆

Compatible with Primary-Side and Second-SiderAh嘉泰姆

ControlrAh嘉泰姆

CCM Operation CompatibilityrAh嘉泰姆

Short Pin Fault ProtectionrAh嘉泰姆

Available in SOP-8 and SOT23-6 PackagesrAh嘉泰姆

RoHS Compliant and 100% Lead (Pb)-FreerAh嘉泰姆

Halogen-FreerAh嘉泰姆

   应用范围 返回TOPrAh嘉泰姆

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•电视、显示器、网通电源等rAh嘉泰姆

•其它消费电子电源。</p>

Switching Mode Power Supply(DCM, TM and CCM)rAh嘉泰姆

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Desktop and Appliance ApplicationrAh嘉泰姆

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