Controller capable of detecting a direct current (dc) voltage information
AssigneeLeadtrend Technology Corp.
InventorJian-Zhou Yan
Life of this patent
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Abstract
A controller capable of detecting a direct current (DC) voltage information is applied to a power factor correction (PFC) power converter. The controller includes an active switch and a filter. The active switch is used for receiving a detection signal from a detection pin of the controller, and filtering a voltage component of the detection signal to generate a first signal, wherein the voltage component relates to a turning-on period of a power switch of the PFC power converter. The filter is coupled to the active switch and used for filtering a switching component of the first signal to generate the DC voltage information.
Claims7
A controller capable of detecting a direct current (DC) voltage information, wherein the controller is applied to a power factor correction (PFC) power converter, the controller comprising:
- an active switch for receiving a detection signal from a detection pin of the controller, and filtering a voltage component of the detection signal to generate a first signal, wherein the voltage component relates to a turning-on period of a power switch of the power factor correction power converter;
- and
- a filter coupled to the active switch, wherein the filter is used for filtering a switching component of the first signal to generate the DC voltage information.
Dependencies are inferred from the claim text.