Abstract: In a semiconductor device, a semiconductor element having a plurality of gate electrodes including a first gate electrode and a second gate electrode. An electrical connection member is electrically connected to a front surface electrode of the semiconductor element. A cell region of the semiconductor element includes a first cell region that allows a current to flow between the front surface electrode and a back surface electrode when the first gate electrode is applied with a voltage, and a second cell region that allows a current to flow between the front surface electrode and the back surface electrode when the second gate electrode is applied with a voltage. The semiconductor element and a control circuit are configured to generate a time difference in cutting off the current between the first cell region and the second cell region.

Abstract: Systems and methods are provided and include an engine temperature sensor, an engine speed sensor, a switching arrangement, a radiator fan control module, and a pulse-width modulation module. The radiator fan control module calculates a required airflow of a radiator fan of the vehicle based on an engine temperature and calculates a required voltage to produce the required airflow of the radiator fan based on a size of the radiator fan. The radiator fan control module generates a control signal to increase a fan motor voltage of a radiator fan motor in response to the required voltage exceeding a battery voltage and generates the control signal to maintain a standard fan motor voltage of the radiator fan motor in response to the required voltage being less than the battery voltage. The pulse-width modulation module controls a switching operation of the at least one switch in accordance with the control signal.