Patent ID: 8213137

Claim:
A solid state relay for controlling a motor comprising: a power source; two high side N-type MOSFETs and two low side N-type MOSFETs establishing a full bridge; a first set of charge pumps to drive a first high side MOSFET of the two high side N-type MOSFETs and a first low side MOSFET of the two low side N-type MOSFETs, wherein each MOSFET gate is driven separately; a second set of charge pumps to drive a second high side MOSFET of the two high side N-type MOSFETs and a second low side MOSFET of the two low side N-type MOSFETs, wherein each MOSFET gate is driven separately; and two current sensing circuits, each current sensing circuit comprising a shut down slave circuit, wherein the first low side MOSFETs is used as a current sensing device for a first current sensing circuit of the two current sensing circuits, and the second low side MOSFETs is used a current sensing device for a second current sensing circuit of the two current sensing circuits.