9001 Over Current Detector: Recommended Mounting and Interface Notes
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The 9001 is designed to protect power electronic circuits by signaling when current in the circuit has exceeded the nominal detector trip point. It is intended to be mounted on a printed circuit board and provides an open collector output for connection to the circuit's control circuitry. In order to ensure that the detector operates reliably and accurately, the end user must mount and connect the detector properly in the circuit assembly. This note provides guidelines for mounting and connect of the detector.
9001 Over Current Detector: Circuit Examples
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The 9001 over current detector has been designed with the intended application of protecting power semiconductors in power electronic circuits. As such, its application is not limited to one type of power circuit, but instead circuits where power semiconductors are used. It combines small size, an isolated output, and fast response time with a low price to provide an effective means for protecting power semiconductors against over current conditions. This application note is intended to illustrate application of the detector in typical power electronic circuits.
Fast Acting Over Current Power Circuit Protection Scheme
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This paper presents a robust method for active over current protection in power electronic circuits. The method eliminates failures in power electronic circuits by protecting power transistors and other power semiconductors against over current events. It actively distinguishes between temporary events - often caused by transient load conditions such as motor starting - and hard events caused by internal circuit failures or output load shorts.