Patent ID: 9246323
Filing Date: 2016-01-26
CPC Classification: G01K,H02H

Claim Text:
1. A current controller for generating a control signal which controls supply current flowing from a power source to a load, comprising: 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 clock generating circuit which generates a clock signal; a current sensing circuit which determines a current of a current sensing element during a period of the clock signal, and to output 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; and a temperature sensing circuit which determines a temperature of a temperature sensing element during a period of the clock signal, and to output 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, wherein the period of the clock signal decreases when the supply current increases.