This design supplies an isolated 24V at 125mA from three-phase AC mains and DC input voltage. Since a maximum 70-ms startup time is necessary and the maximum input voltage is 1260 Vdc, a low-loss startup network has been developed. In order to reduce the stress on the FET, a cascode (...)
主要特色
LM5020-based isolated flyback in constant switching frequency delivering 24V at 125mA
80% peak efficiency at full load and 325Vdc input voltage
Extremely wide input voltage range: 56Vac to 891Vac
