Patent ID: 9660518
Date: 2017-05-23
CPC Classifications: H02M

Claim:
1. A switching converter comprising: a transformer electrically connected to a power supply portion; a switch whose one of a source and a drain is electrically connected to the transformer; a switching control circuit electrically connected to the switch, the switching control circuit comprising: a first rectifying and smoothing circuit whose first terminal is electrically connected to the transformer and whose second terminal is electrically connected to an output portion; and a second rectifying and smoothing circuit whose first terminal is electrically connected to the transformer and whose second terminal is electrically connected to the switching control circuit, wherein the one of the source and the drain of the switch is electrically connected to the first terminal of the first rectifying and smoothing circuit, wherein the other of the source and the drain of the second transistor is directly connected to a ground, wherein the starter circuit further comprises a diode whose first terminal is electrically connected to the other of the source and the drain of the first transistor and whose second terminal is electrically connected to a first terminal of the control circuit, wherein the one of a source and a drain of the first transistor and the first terminal of the resistor are electrically connected to the one of the source and the drain of the switch, wherein a gate of the second transistor is electrically connected to a second terminal of the control circuit, and wherein a gate of the switch is electrically connected to a third terminal of the control circuit.