DCDC stepdown converter with a wide input range of 6V to 40V DC, suitable for diverse power sources such as automotive, industrial, and solar systems. Adjustable output for both voltage and current, enabling precise tuning to meet the needs of different loads and protecting connected equipment. efficiency up to 96% when operating at 20A, demonstrated modeled performance for converting 24V to 12V. Robust power stage with 75V/80A dual MOSFETs, providing strong current handling and reliable operation under load. Input and output filtering use frequency lowESR electrolytic capacitors, delivering low ripple and stable output. Compact and versatile for use in applications requiring a reliable 12V rail sourced from 640V inputs, with good headroom for current devices. Use scenario 1: Automotive or RV electrical systems. Draw power from a 12V, 24V, or mixed vehicle electrical system and deliver a stable 12V supply to accessories, sensors, lighting, and control modules without excessive heat. Use scenario 2: Industrial automation and control. Provide a stable 12V supply for sensors, controllers, and small actuators from variable DC sources such as 24V or 48V supply lines, enabling consistent performance. Use scenario 3: Renewable energy setups. Convert solar or battery DC sources in the 640V range to a dependable 12V rail for charging, lighting, and lowpower equipment, with efficient operation and reduced thermal output.