Actuation circuit for a switch in a switch-mode converter for improving the response to sudden changes
First Claim
1. An actuation circuit for a switch that controls the power consumption in a switch-mode converter, the switch-mode converter having input terminals for applying an input voltage and output terminals for providing an output voltage, the actuation circuit comprising:
- an error signal generation circuit configured to generate an error signal based on a reference signal and a voltage measurement signal, the voltage measurement signal dependent on the output voltage,a filter arrangement including a first filter having an integrating response and configured to generate a first filter signal from the error signal and a second filter configured to generate a second filter signal from the error signal in accordance with a hysteresis characteristic, the filter arrangement configured to generate a first control signal based on the first filter signal and the second filter signal,an actuation signal generation circuit configured to generate a switch actuation signal based at least in part on the first control signal, the actuation signal generation circuit adapted to provide the switch actuation signal to the switch.
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Accused Products
Abstract
An actuation circuit is provided for a switch controlling the power consumption in a switch-mode converter which has input terminals for applying an input voltage and output terminals for providing an output voltage. The actuation circuit comprises a first input for supplying a voltage measurement signal which is dependent on the output voltage, an error signal generation circuit which generates an error signal by comparing the voltage measurement signal with a reference signal, a filter arrangement which is supplied with the error signal and which generates a first control signal, and an actuation signal generation circuit which is supplied with the first control signal and which provides an actuation signal for the switch on the basis of the first control signal. The filter arrangement comprises a first filter with an integrating response which generates a first filter signal on the basis of the error signal, a second filter which generates a second filter signal from the error signal in accordance with a hysteresis characteristic, and a combinational logic circuit which generates the first control signal from the first and second filter signals.
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Citations
20 Claims
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1. An actuation circuit for a switch that controls the power consumption in a switch-mode converter, the switch-mode converter having input terminals for applying an input voltage and output terminals for providing an output voltage, the actuation circuit comprising:
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an error signal generation circuit configured to generate an error signal based on a reference signal and a voltage measurement signal, the voltage measurement signal dependent on the output voltage, a filter arrangement including a first filter having an integrating response and configured to generate a first filter signal from the error signal and a second filter configured to generate a second filter signal from the error signal in accordance with a hysteresis characteristic, the filter arrangement configured to generate a first control signal based on the first filter signal and the second filter signal, an actuation signal generation circuit configured to generate a switch actuation signal based at least in part on the first control signal, the actuation signal generation circuit adapted to provide the switch actuation signal to the switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An arrangement for use in a step-up converter, comprising:
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a switch controlling the power consumption in the step-up converter; input terminals for applying an input voltage; output terminals for providing an output voltage, a filter arrangement including a first filter having an integrating response and configured to generate a first filter signal from an error signal and a second filter configured to generate a second filter signal from the error signal in accordance with a hysteresis characteristic, the filter arrangement configured to generate a first control signal based on the first filter signal and the second filter signal, the based on a reference signal and a voltage measurement signal that is dependent on the output voltage, and an actuation signal generation circuit configured to generate a switch actuation signal based at least in part on the first control signal, the actuation signal generation circuit adapted to provide the switch actuation signal to the switch. - View Dependent Claims (14, 15, 16, 17)
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18. A method of operating a switch that controls the power consumption in a switch-mode converter which has input terminals for applying an input voltage and output terminals for providing an output voltage, the actuation circuit comprising:
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generating an error signal based on a reference signal and a voltage measurement signal that is dependent on the output voltage, generating a first filter signal from the error signal using a first filter having an integrating response and generating a second filter signal from the error signal in accordance with a hysteresis characteristic using a second filter, t generating a first control signal based on the first filter signal and the second filter signal, generating a switch actuation signal based at least in part on the first control signal, the actuation signal generation circuit adapted to provide the switch actuation signal to the switch. - View Dependent Claims (19, 20)
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Specification