Patent ID: 9590414
Date: 2017-03-07
CPC Classifications: G01K,H02H

Claim:
1. A current controller for generating a control signal which controls supply current flowing from a power source to a load, comprising: a switch which controls the supply current from the power source; an interface circuit which sets a current threshold and a temperature threshold based on an instruction from an outside of the current controller; a current threshold setting circuit which stores and outputs the current threshold; a temperature threshold setting circuit which stores and outputs the temperature threshold; a current sensing circuit which determines a current of a current sensing element, and outputs a current control signal indicating that the supply current should be controlled so as to prevent an over current flowing if a determined current exceeds the current threshold; a temperature sensing circuit which determines a temperature of a temperature sensing element, and outputs a temperature control signal indicating that the supply current should be controlled so as to avoid overheating if a determined temperature exceeds the temperature threshold; and a latching circuit which maintains a control condition when at least one of the current control signal and the temperature control signal is output.