Patent ID: 11909198
Assignee: WITRICITY CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A method for protecting one or more components of a wireless power receiver, the components comprising at least one transistor gate configured to be controlled by at least one gate driver, the method comprising:
providing, by a gate driver, at least one control signal to control switching of the transistor gate such that power is transmitted to a load coupled to the receiver, wherein providing the control signal comprises:
in a pre-drive circuit,
receiving at least one pre-pulse width modulation (PRE-PWM) signal from a power controller; and
transmitting the at least one PRE-PWM signal; and

in a post-driver circuit,
receiving the at least one PRE-PWM signal from the pre-drive circuit; and
transmitting at least one post-PWM (POST-PWM) signal to the transistor gate;

generating, by a first controller coupled to the gate driver, a protection signal, the protection signal comprising at least one of:
(i) a fault signal indicating a fault in one or more components of the receiver;
(ii) a signal indicating that the transistor gate should be latched; and/or
(ii) at least one undervoltage signal indicating that an undervoltage condition exists in a power supply of the gate driver; and

adjusting, by the gate driver based on the generated protection signal, the provided control signal to latch the transistor gate such that power is not transmitted to the load.