Systems and methods are provided for protecting a door system from damage by a back electromotive force (EMF) voltage generated when a door coupled to a door actuator is manually closed. The door system may include a driver configured to drive the door actuator to move the door, and a back EMF protection circuit. The back EMF protection circuit detects a back EMF voltage generated by the door actuator when the door is moved, and determines whether the back EMF voltage exceeds an overvoltage threshold. In response to determining that the back EMF voltage exceeds the overvoltage threshold, the back EMF protection circuit causes the driver to transition to an enabled state to short the back EMF voltage to ground.

A vehicle opening-closing body control apparatus includes: a driving device driving an opening-closing body; a lock device retaining the opening-closing body in fully open and fully closed positions by including a latch mechanism, which performs an engagement action depending on a movement position of the opening-closing body; and a control device controlling the actions of the driving and lock devices, wherein the control device includes a position determination unit determining whether the movement position is in an engagement action position of the latch mechanism in a case in which driving control of the opening-closing body is stopped, and it becomes possible for the driving control to be restarted thereafter, and an engagement release control unit causing the latch mechanism to perform a release action by controlling the action of the lock device in a case in which it is determined that the movement position is in the engagement action position.

Systems and methods are provided for protecting a door system from damage by a back electromotive force (EMF) voltage generated when a door coupled to a door actuator is manually closed. The door system may include a driver configured to drive the door actuator to move the door, and a back EMF protection circuit. The back EMF protection circuit detects a back EMF voltage generated by the door actuator when the door is moved, and determines whether the back EMF voltage exceeds an overvoltage threshold. In response to determining that the back EMF voltage exceeds the overvoltage threshold, the back EMF protection circuit causes the driver to transition to an enabled state to short the back EMF voltage to ground.