CIRCUIT FOR INCREASING BUCK OUTPUT VOLTAGE

摘要

A circuit includes a power supply end, a switching tube and a first loop connected to the power supply end in order, a second loop, and a load. The power supply end provides an input voltage for the circuit through a positive busbar and a negative busbar. The first loop includes a first capacitor, a first inductor, and a first freewheeling diode. When the switching tube is on, the first inductor is charged by the input voltage through the first capacitor; and when the switching tube is off, the first inductor discharges through the first capacitor and the first freewheeling diode. The second loop includes a second inductor coupled with the first inductor, a second capacitor and a second freewheeling diode forming a loop with the second inductor. The second capacitor and the first capacitor are connected in series.

主权项

1. A circuit for increasing a buck output voltage, comprising:
a power supply end, providing an input voltage for the circuit through a positive busbar and a negative busbar; a switching tube and a first loop connecting to the power supply end in order, the first loop comprising a first capacitor, a first inductor, and a first freewheeling diode, wherein when the switching tube is on, the first inductor is charged by the input voltage through the first capacitor, and when the switching tube is off, the first inductor discharges through the first capacitor and the first freewheeling diode; a second loop, comprising a second inductor coupled with the first inductor, a second capacitor and a second freewheeling diode forming a loop with the second inductor, wherein the second capacitor and the first capacitor are connected in series, and when the switching tube is off and the first inductor is discharging, the second inductor generates a coupling voltage and discharges through the second loop; and a load, connecting between a positive terminal of the first capacitor and a negative terminal of the second capacitor.