Switching Power Converter Circuit and Control Method Thereof
AssigneePowerX Semiconductor Corporation
InventorsTsung-Wei Huang, Chieh-Ju Tsai, Shao-Chi Huang, Ching-Jen Chen
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Abstract
A switching power converter circuit includes a power stage circuit, configured to generate an output voltage based on an input voltage; a control circuit, configured to compare a ramp signal with a first reference voltage to generate a control signal for controlling the power stage circuit; and a ramp signal generator, coupled to the control circuit, configured to generate the ramp signal and determine a slope of the ramp signal according to a function; wherein the function includes a plurality of parameters, and the plurality of parameters include the input voltage and a second reference voltage but do not include the output voltage.
Claims20
A switching power converter circuit, comprising:
- a power stage circuit, configured to generate an output voltage based on an input voltage;
- a control circuit, configured to compare a ramp signal with a first reference voltage to generate a control signal for controlling the power stage circuit;
- and
- a ramp signal generator, coupled to the control circuit, configured to generate the ramp signal and determine a slope of the ramp signal according to a function;
- wherein the function includes a plurality of parameters, and the plurality of parameters include the input voltage and a second reference voltage but do not include the output voltage.
A control method for a switching power converter circuit, the switching power converter circuit being configured to generate an output voltage based on an input voltage, the control method comprising:
- comparing a ramp signal with a first reference voltage to generate a control signal for controlling the switching power converter circuit;
- and
- generating the ramp signal according to a function;
- wherein the function includes a plurality of parameters, and the plurality of parameters include the input voltage and a second reference voltage but do not include the output voltage.
Dependencies are inferred from the claim text.