Semiconductor device with overcurrent protection

Details Semiconductor device with overcurrent protection Semiconductor device with overcurrent protection

2009-12-30

2011-10-25

Nguyen, Danny (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

C361S093700

Reexamination Certificate

active

08045310

ABSTRACT:
A semiconductor device with an over-current detection feature is disclosed. According to an example of the invention the device includes: a semiconductor chip including a load current path that conducts a load current in response to an input signal activating the load current flow. A current sensor arrangement provides a measurement signal representing the load current. An evaluation circuit is configured to compare the measurement signal with a first threshold and to signal an over-current when the measurement signal exceeds the first threshold after a delay time period starting from the activation of the load current flow has elapsed.

REFERENCES:
patent: 4553084 (1985-11-01), Wrathall
patent: 7636227 (2009-12-01), Cheng et al.
patent: 2002/0118500 (2002-08-01), Covi et al.
patent: 2003/0072120 (2003-04-01), Ishikawa et al.

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