[原创] Infineon IRS2982S多用途开关电源(SMPS)控制器解决方案

Infineon公司的IRS2982S是多用途开关电源(SMPS)控制器,集成了高压起动,精密温度补偿内部基准,跨导型误差放大器,初级检测开路保护和逐个周期初级限流,和降压,升压,反激和其它SMPS电路拓扑兼容,主要用在LED驱动器和开关电源.本文介绍了IRS2982S主要特性,框图,应用电路以及IRXPSU1 36W反激评估板主要特性,电路图,材料清单和PCB设计图.

The IRS2982 is a versatile SMPS control IC designed to drive switching converters for LED drivers and power supplies. Features include; integrated high voltage start up, accurate temperature compensated internal reference, transconductance type error amplifier, primary sensed open circuit protection and cycle by cycle primary current limiting. The IRS2982 is compatible with Buck, Boost, Flyback and other SMPS circuit topologies and is able to regulate voltage or current directly or by secondary feedback through an opto-isolator. The high voltage startup cell enables the VCC supply to be derived initially from the DC bus until an auxiliary inductor winding or other supply source is able to take over enabling rapid start up under all line input voltage conditions. The IRS2982 uses voltage mode control operating in critical conduction (CrCM) with a minimum off time limit so that it enters discontinuous (DCM) mode at light loads. Burst mode operation is also available at very light loads. ..

查看全文