Power Converter
AssigneeDialog Semiconductor (UK) Limited
InventorHorst Knoedgen
Life of this patent
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Abstract
Control circuit for a power converter that converts an input voltage into an output voltage is disclosed. The control circuit comprises a power switch; a power switch driver coupled with the power switch to control the switching state of the power switch so as to provide the output voltage at an output port of the power converter, the output port for coupling with a first terminal of a load; a load port for coupling with a second terminal of the load; a switching element coupled with the load port to selectively connect the load port to ground; and operating voltage supply means coupled with the load port, for providing an operating voltage to the control circuit.
Claims45
A control circuit for a power converter that converts an input voltage into an output voltage, comprising
- a power switch;
- a power switch driver coupled with the power switch to control the switching state of the power switch so as to provide the output voltage at an output port of the power converter, the output port for coupling with a first terminal of a load;
- a load port for coupling with a second terminal of the load;
- a switching element coupled with the load port to selectively connect the load port to ground;
- and
- operating voltage supply means coupled with the load port, for providing an operating voltage to the control circuit.
A power converter comprising:
- a control circuit for a power converter that converts an input voltage into an output voltage, comprising
- a power switch;
- a power switch driver coupled with the power switch to control the switching state of the power switch so as to provide the output voltage at an output port of the power converter, the output port for coupling with a first terminal of a load;
- a load port for coupling with a second terminal of the load;
- a switching element coupled with the load port to selectively connect the load port to ground;
- and
- operating voltage supply means coupled with the load port, for providing an operating voltage to the control circuit.
- an inductor coupled with the power switch;
- and
- a diode coupled with the power switch and an output port.
A method for operating a power converter that converts an input voltage into an output voltage, the method comprising:
- operating a power switch driver coupled with a power switch to control the switching state of the power switch so as to provide the output voltage at an output port of the power converter, wherein a load is coupled with the output port and a load port;
- and
- operating a switching element coupled with the load port to selectively switch the load port to ground and to thereby provide an operating voltage from the load port to the power switch driver.
Dependencies are inferred from the claim text.