In a solid state switch (SSS) driver circuit for controlling a solid state switch operated as high side switch between a battery cell stack and a load, the SSS driver circuit includes: a voltage generation circuit; a switch off circuit; and a switch controller connected to a first output node and to a second output node, wherein the switch controller is configured to: receive a ground voltage via a third ground node, and a fourth control signal; and connect the first output node and a gate node of the solid state switch according to the fourth control signal.