• [ CXAC85174 ]

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1.产品概述       2.产品特点     nWQ嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）nWQ嘉泰姆

5.产品封装       6.电路原理图  nWQ嘉泰姆

7.相关产品nWQ嘉泰姆

   产品概述 返回TOPnWQ嘉泰姆

      CXAC85174是一个通过光耦回馈实现自动调节恒压输出，并且通过辅助线圈检测实现自动调节恒流输出的AC-DC控制器。CXAC85174通过HV引脚控制耗尽型NFET实现快速启动并降低静态功耗，并通过DCM模式下的波谷检测减少开关损耗。采用PWM和PFM模式自动切换调节，且最高频率为100KHz，最低频率为170Hz，实现高的转换效率及小于30mW静态功耗。CXAC85174内置了热关断、过流、输出过压及输入过压保护功能，同时可通过NTC引脚检测环境温度进行过温保护。The CXAC85174 is a high performance AC-DC power supply controller which provides constant output voltage (CV) using the Secondary Side Regulation (SSR) and accomplishes constant output current (CC) through Primary-side Regulation (PSR) techniques. The device together with an external depletion mode NFET provides a fast start-up time without consuming extra power dissipation in no-load. The drive output interfaces to a MOSFET power switch. Discontinuous conduction mode (DCM) with valley-switching effectively reduces switching losses. The controller operates in pulse width modulation mode (PWM) or pulse frequency modulation mode (PFM) automatically to keep the conversion high efficiency within the line ranges and contains thermal shutdown function, over-voltage protection and over-current protection. A wide switching frequency range from 170Hz to 100kHz can achieve both less than 30mW no-load power dissipation and high average active efficiency

   产品特点 返回TOPnWQ嘉泰姆

•<30mW的空载功耗nWQ嘉泰姆

•±1%的恒压±5%恒流调整精度nWQ嘉泰姆

•输出驱动电压钳位nWQ嘉泰姆

•170Hz～100KHz开关频率nWQ嘉泰姆

•适用小尺寸外部元件nWQ嘉泰姆

•光耦反馈调节恒压和源边反馈调节恒流nWQ嘉泰姆

•有源器件启动使启动速度更快nWQ嘉泰姆

•SOT23-6和SOP-8 封装nWQ嘉泰姆

•符合RoHS规范及Pb-FreenWQ嘉泰姆

<30mW No-Load Power.nWQ嘉泰姆

±1% Voltage Regulation and ±5% CurrentnWQ嘉泰姆

RegulationnWQ嘉泰姆

Clamped Gate-Driver Output for MOSFETnWQ嘉泰姆

170Hz ~ 100kHz Switching FrequencynWQ嘉泰姆

Tiny External ComponentsnWQ嘉泰姆

Opto-Coupler Feedback of CV and PrimarynWQ嘉泰姆

Side Regulation(PSR) for CCnWQ嘉泰姆

Active Start-up Scheme Enables FastestnWQ嘉泰姆

Possible Start-up.nWQ嘉泰姆

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

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

Halogen-FreenWQ嘉泰姆

   应用范围 返回TOPnWQ嘉泰姆

•消费类电子产品适配器nWQ嘉泰姆

•AC-DC电源
Adapters for Consumer Electronics
AC/DC PowernWQ嘉泰姆

   技术规格书（产品PDF) 返回TOP nWQ嘉泰姆

     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！nWQ嘉泰姆

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产品封装图 返回TOPnWQ嘉泰姆

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电路原理图 返回TOPnWQ嘉泰姆

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◀ 上一篇: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

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下一篇▶:CXAC85175高集成度电流模式PWM控制器电源适配器中小功率的开关电源设备内部采用了频率抖动技术改善开关电源系统的EMI性能内罝软起功能降低MOSFET应力

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