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SWITCHING CONTROL DEVICE, DRIVING DEVICE, ISOLATED DC-DC CONVERTER, AC-DC CONVERTER, POWER ADAPTER, AND ELECTRIC APPLIANCE
SWITCHING CONTROL DEVICE, DRIVING DEVICE, ISOLATED DC-DC CONVERTER, AC-DC CONVERTER, POWER ADAPTER, AND ELECTRIC APPLIANCE
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机译:开关控制装置,驱动装置,隔离的DC-DC转换器,AC-DC转换器,电源适配器和电器
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摘要
A direct-current voltage is applied to a series circuit composed of a switching transistor, a sense resistor, and a coil. A control circuit is configured to be capable of performing current control in which the control circuit, after turning on the switching transistor, determines a turn-off time point of the switching transistor based on a sense voltage appearing across the sense resistor, and to turn off the switching transistor during the current control if, despite a predetermined time having passed after the switching transistor being turned on, the sense voltage does not reach a predetermined threshold voltage.
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