Switch drive circuit
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United States of America Patent
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Jun 5, 2018
Issued Date -
Feb 1, 2018
app pub date -
Jul 26, 2016
filing date -
Jul 26, 2016
priority date (Note) -
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Abstract
A switch drive circuit includes a high-side power supply section, a latch circuit, a high-side driver, a low-side driver, and a high-side switch control circuit. The latch circuit latches a logical level of a high-side switching signal at the time of performing switching of a high-side switch. The high-side driver drives the high-side switch by the high-side switching signal outputted from the latch circuit. The low-side driver drives a low-side switch by a low-side switching signal. The high-side switch control circuit sets, at the time of stopping the switching of the high-side switch, a stop established state in which the logical level of the high-side switching signal is fixed at a stop logic level, and releases the stop established state at the time of performing the switching of the high-side switch.
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