Open-circuit/pin-lift detector

Abstract

One example discloses a power regulator, including: a power output node configured to be coupled to a high-side of a load; a load ground node configured to be coupled to a low-side of the load; a negative feedback node (Fbm) configured to form a negative feedback path when coupled to the low-side of the load; a controller configured to regulate voltages at the power output node and the load ground node in response to a voltage on the negative feedback path; a current source configured to inject a current at the negative feedback node (Fbm); and a detector circuit configured to monitor a voltage (VFbm) at the negative feedback node (Fbm); wherein the detector circuit is configured to switch the negative feedback node (Fbm) from the load ground node to an internal ground node, if the voltage (VFbm) exceeds a predetermined threshold voltage.

Dependencies are inferred from the claim text.