Output Switching Circuit

摘要

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.

主权项

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.