Non-isolated single-inductor circuit for outputting positive and negative low-voltage power

A non-isolated single-inductor circuit for outputting positive and negative low-voltage power, comprising:

• a circuit input end, a circuit output end, a switch module, an energy storage inductor, a +VCC1 energy storage filter, a −VCC2 energy storage filter, and an inductor freewheel diode,
• wherein the circuit input end, the switch module, the energy storage inductor, the +VCC1 energy storage filter, and the circuit output end are sequentially connected in series, and a conducting direction of the +VCC1 energy storage filter is from the circuit input end to the circuit output end,
• the −VCC2 energy storage filter and the inductor freewheel diode are connected in series, an input end of the −VCC2 energy storage filter is connected between the +VCC1 energy storage filter and the circuit output end, and an output end of the inductor freewheel diode is connected between the energy storage inductor and the switch module,
• when the switch module is turned on, the energy storage inductor and the +VCC1 energy storage filter are charged;
• and
• when the switch module is turned off, the energy storage inductor charges the +VCC1 energy storage filter and the −VCC2 energy storage filter, the +VCC1 energy storage filter outputs positive power, and the −VCC2 energy storage filter outputs negative power.