Electrostatic discharge protection circuit of power chip
An electrostatic discharge protection and electrostatic discharge technology, which is applied to emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, circuits, etc., can solve the problem of small leakage current, slow response speed, and low cross voltage. question
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[0033] In order to enable your examiners to further understand the technical content of the present invention, five preferred embodiments are listed as follows. Since the bipolar junction transistor (BJT) can withstand a higher voltage drop and a larger output current, and provide a faster response speed to provide a fast current output path, the existing electrostatic discharge protection circuit 18 can be avoided. Therefore, the internal circuit of the electrostatic discharge protection circuit 18 of the present invention uses at least one bipolar junction transistor.
[0034] Such as figure 2 As shown, the electrostatic discharge protection circuit 181 of the first embodiment of the present invention includes: NPN bipolar junction transistors 30, 31 and a first conduction circuit 187, wherein the collector of the NPN bipolar junction transistor 30 (Collector ) is connected to the signal input / output terminal 14, the bases (Base) of the NPN bipolar junction transistors 30 ...
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