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

Claim 0:
1. An apparatus comprising:
a first power converter circuit having an input configured to receive an alternating current (AC) voltage and having a first bias output, wherein the first bias output provides a first direct current (DC) voltage;
a second power converter circuit having an input configured to receive the alternating current (AC) voltage and having a second bias output, wherein the second bias output provides a second direct current (DC) voltage;
a safety fault monitor circuit having an input wherein the input receives the first DC voltage and having an output coupled to a fault interrupt output, the safety fault monitor being configured to selectively assert a fault interrupter signal on the fault interrupt output based at least in part on the first DC voltage and a first power consumption; and
a power fault monitor circuit having a first input wherein the first input receives the second DC voltage, having a second input wherein the second input receives the first DC voltage, and having an output coupled to the fault interrupt output, the power fault monitor being configured to selectively assert the fault interrupter signal on the fault interrupt output based at least in part on the second DC voltage and a second power consumption, in which the second power consumption is less than the first power consumption.