Output switching circuit
First Claim
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1. A comparison unit for a switching circuit, comprising:
- a comparator configured to compare an input signal with a feedback signal to provide a first signal;
a sampling circuit configured to sample the first signal according to a reference clock to provide a sampling signal, the sampling signal having a first level or a second level; and
a comparison signal generating circuit configured to provide a comparison signal having the first level when the sampling signal is at the first level for a longer time duration than the second level or having the second level when the sampling signal is at the first level for a shorter time duration than the second level.
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Abstract
An output switching circuit includes a switching circuit having a first transistor connected to a high-voltage power supply, a second transistor connected to a low-voltage power supply, and an output s terminal at a connection node between the first and second transistors; a comparison unit that compares an input signal with a feedback signal obtained by feedback of an output signal of the output terminal via a low-pass filter to generate a comparison signal; and a drive pulse generating unit that generates first drive pulses for driving the first transistor and second drive pulses for driving the second transistor in accordance with the comparison signal.
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Citations
20 Claims
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1. A comparison unit for a switching circuit, comprising:
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a comparator configured to compare an input signal with a feedback signal to provide a first signal; a sampling circuit configured to sample the first signal according to a reference clock to provide a sampling signal, the sampling signal having a first level or a second level; and a comparison signal generating circuit configured to provide a comparison signal having the first level when the sampling signal is at the first level for a longer time duration than the second level or having the second level when the sampling signal is at the first level for a shorter time duration than the second level. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for switching a switching circuit, comprising:
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comparing an input signal with a feedback signal to provide a first signal; sampling the first signal according to a reference clock to provide a sampling signal, the sampling signal having a first level or a second level; providing a comparison signal having the first level when the sampling signal is at the first level for a longer time duration than the second level or having the second level when the sampling signal is at the first level for a shorter time duration than the second level; and switching an output signal of the switching circuit between the first level and the second level when the comparison signal transitions between the first level and the second level. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A comparison unit for a switching circuit, comprising:
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means for comparing an input signal with a feedback signal to provide a first signal; means for sampling the first signal according to a reference clock to provide a sampling signal, the sampling signal having a first level or a second level; and means for providing a comparison signal having the first level when the sampling signal is at the first level for a longer time duration than the second level or having the second level when the sampling signal is at the first level for a shorter time duration than the second level. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification