PRECISION SURGE CLAMP WITH CONSTANT CLAMPING VOLTAGE AND NEAR-ZERO DYNAMIC RESISTANCE UNDER VARIOUS THERMAL, POWER AND CURRENT LEVELS

摘要

A system includes a voltage surge protection circuit that receives a source voltage from a source. The voltage surge protection circuit includes a reference circuit to generate a reference voltage based on the source voltage when the source voltage exceeds a clamping voltage and a feedback control circuit to receive the reference voltage and clamp an output voltage to the clamping voltage when the voltage from the source exceeds the clamping voltage. A dynamic resistance of the feedback control circuit is substantially zero.

主权项

1. A system comprising:
a voltage surge protection circuit configured to receive a source voltage from a source, the voltage surge protection circuit comprising:
a reference circuit configured to generate a reference voltage based on the source voltage when the source voltage exceeds a clamping voltage; anda feedback control circuit configured to receive the reference voltage and clamp an output voltage to the clamping voltage when the voltage from the source exceeds the clamping voltage, wherein a dynamic resistance of the feedback control circuit is substantially zero.