Time signal generator and time signal generating method
AssigneeuPI Semiconductor Corp.
InventorYa-Ping Chen
Life of this patent
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Abstract
A time signal generator and a time generating method used in a power converter are provided. The time generating method includes following steps. An error delay signal is generated according to an error signal, wherein the error signal is related to an output voltage of the power converter. A time signal is generated according to the error signal and the error delay signal. The time signal may serve to improve a response speed of the power converter.
Claims22
A time signal generator, adapted to a power converter, the time signal generator comprising:
- an input unit comprising an amplifier, receiving an error signal, wherein the error signal relates to an output voltage of the power converter;
- a delay unit comprising a resistor and a capacitor, coupled to the input unit, and generating an error delay signal according to the error signal;
- a time signal unit, configured to provide a time signal;
- and a conversion control device, coupled to the input unit, the delay unit and the time signal unit, and controlling the time signal unit to generate the time signal according to the error signal and the error delay signal, wherein the conversion control device receives a difference of the error signal and the error delay signal, and controls an operation of the time signal unit according to the difference;
- wherein a first input terminal of the input unit receives the error signal, a first terminal of the resistor is coupled to a second input terminal and an output terminal of the input unit, the capacitor is coupled between a second terminal of the resistor and ground, a first input terminal and a second input terminal of the conversion control device are respectively coupled to the first and second terminals of the resistor.
A time signal generator, adapted to a power converter, the time signal generator generating an error delay signal according to an error signal, and generating a time signal according to the error signal and the error delay signal, wherein the error signal relates to an output voltage of the power converter, wherein the time signal generator comprises:
- an input unit comprising an amplifier, receiving the error signal;
- and a delay unit comprising a resistor and a capacitor, coupled to the input unit, and generating the error delay signal according to the error signal, wherein the time signal generator receives a difference of the error signal and the error delay signal, and generates the time signal according to the difference;
- wherein a first input terminal of the input unit receives the error signal, a first terminal of the resistor is coupled to a second input terminal and an output terminal of the input unit, the capacitor is coupled between a second terminal of the resistor and ground, a first input terminal and a second input terminal of a conversion control device are respectively coupled to the first and second terminals of the resistor.
A time signal generating method, adapted to a power converter, the time signal generating method comprises:
- generating an error delay signal according to an error signal, wherein the error signal relates to an output voltage of the power converter;
- and generating a time signal according to the error signal and the error delay signal, wherein the step of generating the time signal according to the error signal and the error delay signal comprises:
- generating the error delay signal by connecting the error signal to an input unit and to a delay unit comprising a resistor and a capacitor;
- calculating the error delay signal on the capacitor;
- calculating a difference of the error signal and the error delay signal on a cross voltage of the resistor;
- and generating the time signal according to the difference.
A time signal generator, adapted to a power converter, the time signal generator comprising:
- an error signal adjustment circuit, receiving an error signal to generate an error delay signal, wherein the error signal relates to an output voltage of the power converter;
- and a time signal unit, coupled to the error signal adjustment circuit, wherein the time signal unit generates a time signal according to a processing result of the error signal and the error delay signal, wherein the error signal adjustment circuit comprises:
- an input unit comprising an amplifier, receiving the error signal;
- and a delay unit comprising a resistor and a capacitor, coupled to the input unit, and generating the error delay signal according to the error signal, wherein the processing result of the error signal and the error delay signal is a difference of the error signal and the error delay signal, wherein a first input terminal of the input unit receives the error signal, a first terminal of the resistor is coupled to a second input terminal and an output terminal of the input unit, the capacitor is coupled between a second terminal of the resistor and ground, a first input terminal and a second input terminal of a conversion control device are respectively coupled to the first and second terminals of the resistor.
Dependencies are inferred from the claim text.