In-vehicle control device

An in-vehicle control device comprising:

• a voltage conversion unit to be provided between a power storage unit and a power path that supplies power from a power supply unit to a load;
• and
• a control unit configured to control the voltage conversion unit,
• wherein the voltage conversion unit performs a first conversion operation of converting a voltage applied to a first conductive path on a power path side and applying the converted voltage to a second conductive path on a power storage unit side, and a second conversion operation of converting a voltage applied to the second conductive path and applying the converted voltage to the first conductive path,
• the voltage conversion unit has a first switch and a second switch connected in series between the first conductive path and ground, a third switch and an element unit connected in series between the second conductive path and the ground, and an inductor,
• the first switch is disposed closer to the first conductive path than the second switch is,
• the third switch is disposed closer to the second conductive path than the element unit is,
• the element unit is a fourth switch or a diode and is capable of interrupting a current flowing through the element unit toward the ground,
• one end of the inductor is electrically connected to a portion between the first switch and the second switch, another end of the inductor is electrically connected to a portion between the third switch and the element unit,
• the voltage conversion unit performs a discharging operation of turning the third switch on and off, interrupting the current flowing to the ground side through the element unit at least when the third switch is in an on state, and maintaining the second switch in an on state, and
• the control unit causes the voltage conversion unit to perform the discharging operation when a discharging condition is satisfied.