Resonant converter
AssigneeSignify Holding B.V.
InventorsYufei Zhou, Hui Zhang
Life of this patent
Estimating the term…
Abstract
A resonant converter has a resonant capacitor between the input stage and the output stage. An output inductor arrangement of the output stage has a first inductor component and a second inductor component. A first output is coupled to a reference output by both of the first and second inductor components in series and connects to a first load with a first (high) forward voltage. A second output is coupled to the reference output by only one of the first and second inductor components, and connects to a second load with a second (low) forward voltage. Only one output connects to a corresponding load at one time. This enables a large output voltage range with low total harmonic distortion and/or low voltage stress on the components of the input and output stages.
Claims15
A resonant converter comprising:
- an input stage;
- an output stage comprising an output inductor arrangement;
- and
- a resonant capacitor between the input stage and the output stage;
- wherein at least part of the output inductor arrangement of the output stage is adapted to be electrically connected in parallel with said resonant capacitor and charged by said resonant capacitor,
- wherein the output inductor arrangement comprises a first inductor component and a second inductor component magnetically coupled to each other, and wherein the output stage further comprises:
- a first output coupled to a reference output by both of the first inductor component and the second inductor component in series and adapted to connect to a first load with a first forward voltage, wherein the first inductor component and the second inductor component is adapted to convert the output voltage into a smaller effective output voltage for the resonant converter;
- and
- a second output coupled to the reference output by only one of the first and second inductor components, and adapted to connect to a second load with a second forward voltage smaller than the first forward voltage,
- wherein given only one of the first load and the second load being driven by the resonant converter at one time, the first output is adapted to connect to the first load always and the second output is adapted to be electrically floating always, or the second output is adapted to connect to the second load always and the first output is adapted to be electrically floating always.
Dependencies are inferred from the claim text.