Minimize bulk capacitance and prevent controller resets due to the voltage drop associated with a fault condition

A connection circuit for connecting a voltage source to a main load, the connection circuit comprising:

• a Vbatt node configured to be electrically connected to a voltage source and a main load;
• a blocking diode electrically connected to the Vbatt node;
• a battery isolation switch module, the blocking diode being arranged in series between the battery isolation switch module and the Vbatt node;
• a microprocessor power supply input capacitor bank electrically connected to the battery isolation switch module at a first end of the power supply input capacitor bank, the battery isolation switch module being electrically connected between the blocking diode and the microprocessor power supply input capacitor bank, the microprocessor power supply input capacitor bank being connected to ground at a second end of the microprocessor power supply input capacitor bank, the first end of the microprocessor power supply input capacitor bank being configured to be further connected with a power supply, the blocking diode being arranged to prevent current from flowing back through the blocking diode from the microprocessor power supply input capacitor bank to the Vbatt node.