LOAD CONTROL DEVICE HAVING CLOSED-LOOP GATE DRIVE CIRCUIT

A load control device for controlling power delivered from an AC power source to an electrical load may have a closed-loop gate drive circuit for controlling a semiconductor switch of a controllably conductive device. The controllably conductive device may be coupled in series between the source and...

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Bibliographische Detailangaben
Hauptverfasser: BOLLINGER BRIAN J, WALDRON JONATHAN, GEETHA VEDARAMAN, CHOLASHARI FIROZBABU
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:A load control device for controlling power delivered from an AC power source to an electrical load may have a closed-loop gate drive circuit for controlling a semiconductor switch of a controllably conductive device. The controllably conductive device may be coupled in series between the source and the load. The gate drive circuit may generate a target signal in response to a control circuit. The gate drive circuit may shape the target signal over a period of time and may increase the target signal to a predetermined level after the period of time. The gate drive circuit may receive a feedback signal that indicates a magnitude of a load current conducted through the semiconductor switch. The gate drive circuit may generate a gate control signal in response to the target signal and the feedback signal, and render the semiconductor switch conductive and non-conductive in response to the gate control signal. 用于控制从AC电源输送至电负载的电力的负载控制装置可具有用于控制可控导通装置的半导体开关的闭环栅极驱动电路。所述可控导通装置可串联耦合在所述源与所述负载之间。所述栅极驱动电路可响应于控制电路而生成目标信号。所