Solid state switch driver circuit for a battery system

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 comprising:

• a voltage generation circuit configured to receive:
• a supply voltage via a first input node;
• an output voltage of the battery cell stack via a second input node;
• a ground voltage via a first ground node;
• and
• a first control signal, wherein the voltage generation circuit is configured to:
• generate a drive voltage higher than the supply voltage and the output voltage of the battery cell stack according to the first control signal;
• and
• output the drive voltage to a first output node;
• a switch off circuit configured to receive:
• the output voltage of the battery cell stack via a third input node;
• a ground voltage via a second ground node;
• a second control signal;
• and
• a third control signal, wherein the switch off circuit is further configured to output the output voltage of the battery cell stack to a second output node according to the second and third control signals;
• and
• a switch controller connected to the first output node and to the 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.