Patent ID: 9118322
Filing Date: 2015-08-25
Classification: H03K

Abstract:
1. A high speed bidirectional switch device, comprising: a main pass N-channel transistor connected between an input node and an output node; first and second switching devices connected in series with each other between the input node and the output node, wherein the first and second switching devices have the same resistance in an ON state, wherein a body region of the main pass N-channel transistor is directly electrically coupled between the first switching device and the second switching device at all times, whereby the body region of the main pass N-channel transistor is snatched to a voltage that is half way between the voltage at the input node side and output node side of the main pass N-channel transistor when the first and second switching devices are in the ON state, wherein body regions of the first and second switching devices are shorted to a ground (V a main pass P-channel transistor connected in parallel with the main pass N-channel transistor between the input node and the output node; and third and fourth switching devices connected in series with each other between the input node and the output node, wherein the third and fourth switching devices have the same resistance in an ON state, wherein a body region of the main pass P-channel transistor is electrically coupled between the third switching device and the fourth switching device, whereby the body region of the main pass P-channel MOSFET is snatched to a voltage that is half way between the voltage at the input node side and the output node side of the P-channel transistor when the third and fourth switching devices are in the ON state.