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Adaptive timing for high frequency inverters

專利號(hào)
US11996767B1
公開日期
2024-05-28
申請(qǐng)人
Apple Inc.(US CA Cupertino)
發(fā)明人
Weihong Qiu; Jun Liu; Jizhen Fu; Zaki Moussaoui
IPC分類
H02M1/08; H02J50/10; H02M1/38; H02M7/5387; H02M7/5395
技術(shù)領(lǐng)域
dead,switching,inverter,voltage,vsw,comparator,time,gate1,gate2,switch
地域: CA CA Cupertino

摘要

A method of adaptively controlling dead time between turn off of a first switching device of an inverter and turn on of a second switching device of the inverter that is a counterpart of the first switching device can include: monitoring a plurality of switching events of at least one of the first and second switching devices, storing for each monitored switching event an indication whether a dead time associated therewith permitted optimal switching, and adaptively controlling the dead time responsive to the stored indications. Monitoring a plurality of switching events of at least one of the first and second switching devices can further include sampling an output voltage of the inverter and comparing the sampled output voltage to one of a high reference voltage corresponding to a high inverter rail voltage and a low reference voltage corresponding to a low inverter rail voltage.

說明書

As mentioned above, controller/communications module 116 may be a single module, for example, provided on a single integrated circuit, or may be constructed from multiple modules/devices provided on different integrated circuits or a combination of integrated and discrete circuits having both analog and digital components. The teachings herein are not limited to any particular arrangement of the controller/communications circuitry.

PTx device 110 may optionally include other systems and components, such as a separate communications module 118. In some embodiments, comms module 118 may communicate with a corresponding module tag in the PRx via the power transfer coils. In other embodiments, comms module 118 may communicate with a corresponding module using a separate physical channel 138.

權(quán)利要求

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