供应 NCP1654BD65R2G 开关电源芯片

NCP1654BD65R2G

The NCP1654 is a controller for Continuous Conduction Mode .(CCM) Power Factor Correction step-up 

pre-converters. It controls the power switch conduction time (PWM) in a fixed frequency mode and in

dependence on the instantaneous coil current.Housed in a SO8 package, the circuit minimizes the 

number of external components and drastically simplifies the PFC implementation. It also integrates

high safety protection features that make the NCP1654 a driver for robust and compact PFC stages 

like an effective input power runaway clamping circuitry.

Features
●IEC61000-3-2 Compliant
●Average Current Continuous Conduction Mode
●Fast Transient Response
●Very Few External Components
●Very Low Startup Currents (<75 mA)
●Very Low Shutdown Currents (< 400 mA)
●Low Operating Consumption
●+1.5 ATotem Pole Gate Drive
* Accurate Fully Integrated 65/133/200 kHz Oscillator
●Latching PWM for cycle -by- -cycle Duty -Cycle Control
●Undervoltage Lockout with Hysteresis
●Soft Start for Smoothly Startup Operation
●Pin to Pin Compatible with Industry Standard
●This is a Pb-Free Device

NCP1654是一种用于连续导通模式（CCM）功率因数校正升压预转换器的控制器。它以固定频率模式控

制电源开关导通时间（PWM），并依赖于瞬时线圈电流，封装在SO8封装中，使外部元件的数量小化，

大大简化了PFC的实现。它还集成了高安全保护功能，使NCP1654成为一个强大和紧凑的PFC级驱动器，

如一个有效的输入功率失控钳位电路。

特征
●符合IEC61000-3-2标准
●平均电流连续传导模式
●快速瞬态响应
●很少有外部组件
●极低启动电流（<75 mA）
●极低停机电流（<400 mA）
●低运行消耗
●+1.5 ATotem极栅极驱动
*全集成65/133/200kHz振荡器
●用于逐周期占空比控制的锁存PWM
●滞后欠压闭锁
●软启动，启动平稳
●针对针兼容行业标准
●这是一个无铅设备