Abstract: A flyback converter can include: a power switch controlled to be turned on/off to control a current through a primary side; a first primary winding coupled between an input terminal and a first terminal of the power switch, where a dotted terminal of the first primary winding is coupled to a first terminal of the power switch; a second primary winding coupled between a second terminal of the power switch and a primary grounding terminal, where a dotted terminal of the second primary winding is coupled to the primary grounding terminal; a secondary winding configured between the first and second primary windings in a radial direction of a magnetic core, where the first primary winding, the second primary winding, and the secondary winding are wound around the magnetic core; and a secondary rectifier and filter circuit coupled with the secondary winding, and configured to generate a stable current/voltage.

Abstract: The present application discloses a device for wireless charging circuit, comprising: a primary circuit box, which comprises at least one first switch unit; a secondary circuit box, which comprises at least one second switch unit; a transmission plate, which comprises a primary inductor of a transformer and a primary compensation capacitor, the primary inductor being coupled in series with the primary compensation capacitor; a receiving plate, which comprises a secondary inductor of the transformer; the transmission plate and the receiving plate are magnetically coupled with each other; the transmission plate is coupled with the primary circuit box; and the receiving plate is coupled with the secondary circuit box. The voltage between external terminals of transmission plate and the voltage between external terminals of receiving plate can satisfy the safety requirement.

Abstract: A flyback converter can include: a power switch controlled to be turned on/off to control a current through a primary side; a first primary winding coupled between an input terminal and a first terminal of the power switch, where a dotted terminal of the first primary winding is coupled to a first terminal of the power switch; a second primary winding coupled between a second terminal of the power switch and a primary grounding terminal, where a dotted terminal of the second primary winding is coupled to the primary grounding terminal; a secondary winding configured between the first and second primary windings in a radial direction of a magnetic core, where the first primary winding, the second primary winding, and the secondary winding are wound around the magnetic core; and a secondary rectifier and filter circuit coupled with the secondary winding, and configured to generate a stable current/voltage.

Abstract: Disclosed are an isolated power converter and a switching control signal using the same. In the isolated power converter, the positions of the power switch and the primary winding are exchanged, and the feedback voltage detection and secondary current zero-crossing detection are carried out in accordance with the voltage across the primary winding. Thus, primary side control can still be implemented without employment of an auxiliary winding.

Abstract: Disclosed are an isolated power converter and a switching control signal using the same. In the isolated power converter, the positions of the power switch and the primary winding are exchanged, and the feedback voltage detection and secondary current zero-crossing detection are carried out in accordance with the voltage across the primary winding. Thus, primary side control can still be implemented without employment of an auxiliary winding.

Abstract: The present application discloses a device for wireless charging circuit, comprising: a primary circuit box, which comprises at least one first switch unit; a secondary circuit box, which comprises at least one second switch unit; a transmission plate, which comprises a primary inductor of a transformer and a primary compensation capacitor, the primary inductor being coupled in series with the primary compensation capacitor; a receiving plate, which comprises a secondary inductor of the transformer; the transmission plate and the receiving plate are magnetically coupled with each other; the transmission plate is coupled with the primary circuit box; and the receiving plate is coupled with the secondary circuit box. The voltage between external terminals of transmission plate and the voltage between external terminals of receiving plate can satisfy the safety requirement.

Abstract: A non-isolated resonant converter is provided. The provided non-isolated resonant converter includes a switch circuit, a resonant circuit and a rectifying-filtering circuit. The switch circuit, the resonant circuit and the rectifying-filtering circuit are sequentially connected. The resonant circuit includes an auto-transformer, a capacitor and an inductor, wherein the capacitor and the inductor are connected to the auto-transformer. The configuration of the provided non-isolated resonant converter has small size, low loss and high power density.

Abstract: A non-isolated resonant converter is provided. The provided non-isolated resonant converter includes a switch circuit, a resonant circuit and a rectifying-filtering circuit. The switch circuit, the resonant circuit and the rectifying-filtering circuit are sequentially connected. The resonant circuit includes an auto-transformer, a capacitor and an inductor, wherein the capacitor and the inductor are connected to the auto-transformer. The configuration of the provided non-isolated resonant converter has small size, low loss and high power density.