Semiconductor switch arrangement and an electronic device

Details Semiconductor switch arrangement and an electronic device Semiconductor switch arrangement and an electronic device

2011-03-29

2011-03-29

Nguyen, Danny (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

C361S111000

Reexamination Certificate

active

07916439

ABSTRACT:
A semiconductor switch arrangement comprises a bipolar transistor and a semiconductor power switch having an input node, an output node and a control node for allowing a current path to be formed between the input node and the output node. The bipolar transistor is coupled between the input node and the control node such that upon receiving an electro-static discharge pulse the bipolar transistor allows a current to flow from the input node to the control node upon a predetermined voltage being exceeded at the input node to allow the control node to cause a current to flow from the input node to the output node. Thus, the bipolar transistor device protects the semiconductor switch device, such as an LDMOS device, against ESD, namely protection against power surges of, say, several amperes in less than 1 usec.

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