Patent ID: 9702910
Date: 2017-07-11
CPC Classifications: G01R,H02H,H03K

Claim:
1. A power controller comprising: an input power terminal; an output power terminal; a power switching circuit comprising a first power field-effect transistor having a drain connected to the input power terminal and a gate connected to a control device, and a second power field-effect transistor having a gate connected to the control device and a source connected to the output power terminal; a detection circuit connected to the power switching circuit that measures a load current and a current squared time (I one or more resistors connected in series between a source of the first power field-effect transistor and a drain of the second power field effect transistor, such that a first voltage across the one or more resistors is proportional to the load current, and a RC circuit connected in parallel with the one or more resistors such that a second voltage across the RC circuit is proportional to the current squared time value; one or more data interfaces; and the control device connected to the power switching circuit, the detection circuit and the one or more data interfaces that automatically turns the power switching circuit “OFF” whenever the load current exceeds a first value or the current squared time value exceeds a second value or an “OFF” signal is received from the one or more data interfaces, and automatically turns the power switching circuit “ON” whenever an “ON” signal is received from the one or more data interfaces.