Primary-side-control power converter having a switching controller using frequency hopping and voltage and current control loops
AssigneeSystem General Corp.
InventorTa-yung Yang
Life of this patent
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Abstract
A power converter includes a switch and a controller. The switch switches electrical power in the power converter. The controller generates a switching signal to control the switch in response to a first feedback signal associated with a voltage control loop and a second feedback signal associated with a current control loop. The controller can also allow the switching frequency to hop from frequency to frequency according to a digital pattern.
Claims55
A power converter comprising:
- a switch, responsive to a switching signal, to control electrical power in the power converter;
- and
- a controller to generate the switching signal and to control the switching signal in response to a first feedback signal associated with a voltage control loop and a second feedback signal associated with a current control loop.
A method for regulating power in a power converter, comprising:
- receiving electrical power from input terminals;
- and
- controlling a switching signal to regulate the connection of the electrical power to output terminals in response to a first feedback signal associated with a voltage control loop and a second feedback signal associated with a current control loop.
A power converter comprising:
- input terminals and output terminals;
- a transformer to transfer electrical power from the input terminals to the output terminals;
- a switch to control the transformer in response to a switching signal having a switching frequency;
- and
- a controller to generate the switching signal and to allow the switching frequency to hop from frequency to frequency according to a digital pattern.
A power converter comprising:
- input terminals and output terminals;
- a transformer to transfer electrical power from the input terminals to the output terminals;
- a switch to switch the transformer in response to a switching signal having a switching frequency;
- and
- a controller to generate the switching signal in response to a first feedback signal associated with a voltage control loop and a second feedback signal associated with a current control loop in the primary-side of the transformer.
A power converter comprising:
- a transformer coupled to an input voltage for the power converter;
- a switch to switch electrical power flowing through the transformer;
- a sense device coupled to the transformer to sense at least current from the transformer;
- and
- a controller coupled to the transformer, the controller to provide a switching signal to the switch for regulating output power for the power converter, and to control the switching signal based on a first feedback signal associated with a first control loop and a second feedback signal associated with a second control loop in the primary-side of the power converter.
A power converter comprising:
- a transformer to transfer electrical power from a primary-side of the power converter to a secondary-side of the power converter;
- a switch to switch the electrical power transferred by the transformer, the switching being controlled by a switching signal;
- a controller to generate the switching signal and to control the switching signal in response to a first feedback signal by sampling a voltage signal and a discharge-time associated with the transformer during an off time of the switching signal.
Dependencies are inferred from the claim text.