1results about How to "Achieve zero current shutdown" patented technology

This application discloses a resonant DC / DC converter, system, method, and controller, including: a primary-side circuit, a resonant cavity, a secondary-side circuit, and a controller; the first terminal of the primary-side circuit is connected to a DC source, the second terminal of the primary-side circuit is connected to the first terminal of the resonant cavity, and the second terminal of the resonant cavity is connected to the secondary-side circuit; the controller is used to achieve zero-current turn-off of the primary-side circuit's switching transistor when the gain of the resonant DC / DC converter is less than 1, and when the gain of the resonant DC / DC converter is greater than 1, and when the switching frequency of the resonant DC / DC converter is greater than the resonant frequency of the resonant cavity, to achieve zero-current turn-off of the primary-side circuit's switching transistor. Thus, during startup, the switching transistor of the primary-side circuit of the resonant DC / DC converter can achieve zero-current turn-off, protecting the switching transistor.