Patent ID: 11962252
Assignee: NXP USA, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An apparatus comprising:
a first high side gate driver;
a first low side gate driver;
a microcontroller configured to control the first high side and low side gate drivers;
a voltage regulator for providing a supply voltage to the microcontroller;
a first pair of high side voltage regulators for providing a first pair of high side supply voltages to the first high side gate driver;
a first pair of low side voltage regulators for providing a first pair of low side supply voltages to the first low side gate driver; and
a failsafe circuit configured to monitor operation of the microcontroller, the first high side gate driver and the first low side gate driver,
wherein the failsafe circuit is configured to control the first high side and low side gate drivers in response to detecting a failure of the microcontroller or in response to detecting an error in the first high side gate driver or the first low side gate driver;
wherein the first pair of high side voltage regulators are coupled to receive the supply voltage and are coupled to receive an on or off enable signal provided by a device other than the microcontroller;
wherein the first pair of low side voltage regulators are coupled to receive the supply voltage and are coupled to receive the on or off enable signal provided by the device other than the microcontroller; and
wherein a first of the first pair of high side voltage regulators also provides a voltage to a second of the first pair of high side voltage regulators.