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On Semi NCP106X低功率离线开关电源高压开关器解决方案

On Semi公司的NCP106X是高压开关器,集成了固定频率电流模式控制器和700V MOSFET,是高度集成的器件,包括软起动,频率抖动,短路保护,跳周期模式,可调峰值设定点,斜率补偿和动态自给电源(不需要辅助绕组).内置700V MOSFET的RDS(ON)为34毫欧姆(NCP1060)和11.4毫欧姆(NCP1063).电流模式固定频率60 kHz 或100 kHz,固定的斜率补偿,用于非隔离转换器的直接反馈连接,内部和可调的超功率保护(OPP)电路,内部具有4ms软起动.器件具有自动恢复的输出短路保护和过压保护,频率抖动获得更好的EMI性能,无负载输入功耗小于50mW,频率折返可改善轻负载时的效率.主要用在非隔离辅助/待机电源,功率表开关电源,宽Vin低功率工业开关电源.本文介绍了NCP106X主要特性, 简化内部电路架构和多种应用电路,以及采用IPM和通用控制器板(UCB) 4kW 650V工业马达开发套件的评估板SECO-MDK-4KW-65SPM31-GEVK主要特性,电路图和材料清单.

 

The NCP106X products integrate a fixed frequency current modecontroller with a 700 V MOSFET. Available in a PDIP−7, SOIC−10 orSOIC−16 package, the NCP106X offer a high level of integration,including soft−start, frequency−jittering, short−circuit protection,

skip−cycle, adjustable peak current set point, ramp compensation, and aDynamic Self−Supply (eliminating the need for an auxiliary winding).

Unlike other monolithic solutions, the NCP106X is quiet by nature:during nominal load operation, the part switches at one of the availablefrequencies (60 kHz or 100 kHz). When the output power demanddiminishes, the IC automatically enters frequency fol

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