Patent ID: 11867761
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 9:
10. An integrated circuit that comprises:
a safety fault monitor circuit having a feedback input, a reference input, a first bias input configured to receive a first DC voltage wherein the first DC voltage is derived form an AC voltage and a silicon controlled rectifier output, the safety fault monitor circuit being configured to selectively assert a fault interrupter signal on the silicon controlled rectifier output; and
a power fault monitor circuit coupled to the first bias input, the second bias input, and the silicon controlled rectifier output, for the safety fault monitor circuit, wherein the power fault monitor circuit is configured to selectively assert the fault interrupter signal on the silicon controlled rectifier output, and the power fault monitor circuit includes:
a voltage sense circuit configured to compare the first DC voltage on the first bias input and the second DC voltage on the second bias input, and to determine a comparison result; and
a switch operated based on the comparison result.