METHOD AND DEVICE FOR FREQUENCY GENERATION FOR A RESONANCE CONVERTER

摘要

A method and an activation circuit for frequency generation for a resonance converter that is driven by a half bridge or a full bridge. An activation circuit with a controller excites a resonance circuit belonging to the resonance converter. The power, current or voltage of the resonance converter is controlled via the frequency. The controller activates a programmable variable clock generator via a first interface. The frequency dividers able to be programmed via a second interface create the operating frequency of the half bridge or full bridge by dividing the frequency of a clock generator into different duty cycles. The frequency of the clock generator amounts to a multiple of the bridge frequency, and the second clock generator and thereby the H-bridge frequency of the resonance converter is independent of the first clock generator which supplies the controller.

主权项

1. A method for frequency generation for a resonance converter driven by a half bridge or a full bridge, the method comprising:
providing an activation circuit with a controller and exciting a resonance circuit with the activation circuit, wherein a power, a current or a voltage of the resonance converter is controlled via the frequency; operating the controller via a first clock generator and, via a first interface, controlling with the controller a frequency of a second clock generator that is operated independently of or asynchronously of the first clock generator; generating with two frequency dividers a working frequency of the half bridge or full bridge by dividing a frequency of the second clock generator; and via a second interface, controlling with the controller a divider ratio of the frequency dividers with which a dead time is generated; wherein a frequency of the second clock generator amounts to a multiple of the bridge frequency.