Patent ID: 8810302

Claim:
A low voltage isolation switch, comprising an input terminal configured to receive a high voltage signal; an output terminal configured to transmit said high voltage signal to a load; first and second voltage reference terminals configured to receive first and second voltage references, respectively; a driving block electrically coupled between the first and second voltage reference terminals and including: a first driving transistor electrically coupled between said first voltage reference terminal and an intermediate node; and a second driving transistor electrically coupled between said intermediate node and said second supply voltage reference terminal; a protection block; an isolation block electrically coupled between the protection block and the output terminal and electrically coupled by the protection block to the intermediate node, the isolation block including: a diode block electrically coupled between said input and output terminals; a control transistor electrically coupled across said diode block and having a control terminal electrically coupled to said intermediate node by said protection block; and a voltage limiter block coupled between the input terminal and the control terminal of the control transistor.