STEVAL-ISA117V1,宽范围隔离反激演示板,基于 VIPer16LN 的单输出 12 V/4.2 W。该板使用离线高压转换器 VIPER16LN,采用反激式隔离拓扑实现 4 W 单输出宽范围主电源组。这些功能包括 800 V 雪崩坚固型电源部分、60 kHz 的 PWM 操作(带频率抖动以降低 EMI)、具有可调设定点的电流限制、板载软启动、故障情况后的安全自动重启以及低耐受性-通过权力。该器件不需要
偏置电路即可工作,因为 IC 可以由内部电流发生器供电,因此节省了变压器辅助绕组的成本
说明
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STEVAL-ISA117V1, Wide Range Isolated Flyback Demonstration Board, single output 12 V/4.2 W based on the VIPer16LN. This board implements a 4 W single-output wide range mains power supply set in flyback isolated topology, using the VIPER16LN, an off-line high voltage converter. The features include an 800 V avalanche rugged power section, PWM operation at 60 kHz with frequency jittering for lower EMI, current limiting with adjustable set point, on-board soft-start, a safe auto-restart after a fault condition and a low stand-by power. The device does not require a biasing circuit to operate because the IC can be supplied by an internal current generator, therefore saving the cost of the transformers auxiliary winding
主要特色
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Conversion Type
AC to DC
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Input Voltage
90 to 264 (AC) V
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Output Voltage
12 V
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Output Current
0.35 A
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Output Power
4 W
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Efficiency
75 %
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Topology
Flyback