STEVAL-ISA153V1 评估板实现了专为通用应用而开发的 12V/1.25A、15W(20W 峰值)隔离式反激式宽范围电源。该应用程序的核心是 VIPER38LE,它是 VIPerPlus 系列的最新离线转换器。该器件是一款高压转换器,巧妙地将 800V 坚固型功率 MOSFET 与 PWM 电流模式控制集成在一起。该器件具有可调节的额外功率定时器 (EPT),使 IC 能够维持过载条件几秒钟。 VIPER38LE 以固定的 60 kHz 频率运行。实现抖频,有助于应用满足电磁骚扰标准
说明
-
STEVAL-ISA153V1, Evaluation Board implements a 12V/1.25A, 15W (20W peak) isolated flyback wide-range mains developed for general-purpose applications. The core of the application is the VIPER38LE, the latest offline converter from the VIPerPlus family. This device is a high-voltage converter that smartly integrates an 800V rugged power MOSFET with PWM current-mode control. The device features an adjustable extra power timer (EPT) that enables the IC to sustain overload conditions for a few seconds. The VIPER38LE operates at a fixed 60 kHz frequency. Frequency jittering is implemented, which helps the application meet electromagnetic disturbance standards
主要特色
-
Conversion Type
AC to DC
-
Input Voltage
90 to 265 (AC) V
-
Output Voltage
12 V
-
Output Current
1.25 A
-
Output Power
20 W
-
Efficiency
81.55 %
-
Topology
Flyback