ELECTRIC POWER SUPPLY DEVICE

摘要

An electric power supply device in which electric power efficiency can be enhanced when an output load is low in, for example, a system standby mode. The electric power supply device (10) serially connects two or more power supply circuits ( non-insulated power supply circuit (11), insulated power supply circuit (12)). Each electric power supply circuit (non-insulated power supply circuit (11), insulated power supply circuit (12)) has an output voltage set lower than an input voltage.