A method of controlling a power converter, comprising: providing an inductor connected between an input lead and an output lead , wherein the inductor is configured to receive an input direct current, DC, voltage level through the input lead and apply an output DC voltage, being lower than the input DC voltage level, to the output lead; providing an internal overvoltage detection module electrically communicative with the output lead and operatively associated with a top magnetizing MOSFET , wherein the top magnetizing MOSFET is connected to the inductor ; providing an external overvoltage detection module electrically communicative with the output lead and operatively associated with a power disconnect MOSFET , wherein the power disconnect MOSFET is connected in series between the input lead and the top magnetizing MOSFET; receiving the input direct current, DC, voltage; and converting the input DC voltage to an output DC voltage, wherein the output DC voltage is lower than the input DC voltage; characterized by comparing the output DC voltage to first and second overvoltage thresholds, the first overvoltage threshold being less than the second overvoltage threshold; opening a power disconnect MOSFET if the DC output voltage exceeds the first overvoltage threshold to remove the DC voltage from being converted to the output DC voltage and to limit current to a bottom synchronous MOSFET , being connected to the top magnetizing MOSFET and the inductor , to keep the bottom synchronous MOSFET in a safe operating area; opening the top magnetizing MOSFET if the DC output voltage exceeds the second overvoltage threshold due to propagation delays in opening the power disconnect MOSFET ; and closing the bottom synchronous MOSFET in tandem with opening the top magnetizing MOSFET for complementary tandem opening and closing of both the top magnetizing MOSFET and the bottom synchronous MOSFET. providing an inductor connected between an input lead and an output lead , wherein the inductor is configured to receive an input direct current, DC, voltage level through the input lead and apply an output DC voltage, being lower than the input DC voltage level, to the output lead; providing an internal overvoltage detection module electrically communicative with the output lead and operatively associated with a top magnetizing MOSFET , wherein the top magnetizing MOSFET is connected to the inductor ; providing an external overvoltage detection module electrically communicative with the output lead and operatively associated with a power disconnect MOSFET , wherein the power disconnect MOSFET is connected in series between the input lead and the top magnetizing MOSFET; receiving the input direct current, DC, voltage; and converting the input DC voltage to an output DC voltage, wherein the output DC voltage is lower than the input DC voltage; characterized by comparing the output DC voltage to first and second overvoltage thresholds, the first overvoltage threshold being less than the second overvoltage threshold; opening a power disconnect MOSFET if the DC output voltage exceeds the first overvoltage threshold to remove the DC voltage from being converted to the output DC voltage and to limit current to a bottom synchronous MOSFET , being connected to the top magnetizing MOSFET and the inductor , to keep the bottom synchronous MOSFET in a safe operating area; opening the top magnetizing MOSFET if the DC output voltage exceeds the second overvoltage threshold due to propagation delays in opening the power disconnect MOSFET ; and <EOS>