Pulsed light-emitting diode driver with high-speed voltage detection module

Abstract

An apparatus includes a voltage detection module and a sense resistor configured to couple a low-voltage domain of the voltage detection module to a high-voltage node of an external circuit and to develop a sense current based on a voltage developed at the high-voltage node, the sense current being received at a sensing node of the voltage detection module. The voltage detection module includes a reference network configured to establish one or more threshold conditions at respective internal nodes within the voltage detection module, the one or more threshold conditions being generated based on one or more biasing circuits, and a comparison network configured to generate one or more comparison output signals based on a received current level of the sense current and the one or more threshold conditions.

Dependencies are inferred from the claim text.