Multi-output DC-DC converter

摘要

A multi-output DC-DC converter comprising a plurality of converters configured so that an inductor (2) and a main switch (31) are used in common, wherein a first output voltage (Vo1) is output from a circuit comprising a diode (41) and a first output capacitor (51), and a second output voltage (Vo2) is output from a circuit comprising an auxiliary switch (32), a diode (42) and a second output capacitor (52). The control circuit (80) of the multi-output DC-DC converter has an output detection circuit (81), an oscillation circuit (82), a PWM circuit (83), a frequency divider circuit (84) and a drive circuit (85), and controls a plurality of outputs at high efficiency and reliability. <IMAGE>