A driver device, a method for monitoring a driver device, and a power supply device are disclosed. The driver device includes a controller and a driver module. The driver module includes a voltage divider loop and a plurality of drivers. The voltage divider loop includes a pull-down resistor and one or more corresponding resistors connected to each of the plurality of drivers, where the pull-down resistor and the one or more corresponding resistors are coupled to a power supply via a first node, and the first node is coupled to the controller.