Isolated StepDown DCDC Converter — 140V (75–150 VDC) to 13.8 VDC, 10 A (MAX) Key benefits Converts voltage DC sources to a stable 13.8 V DC output suitable for 12 V/13.8 V systems, allowing equipment that requires lowvoltage supply to run from voltage buses. Isolation between input and output provides galvanic separation, reducing groundloop risks and improving safety in mixedvoltage systems. Rated for up to 10 A output (maximum), enabling reliable power delivery to radios, chargers, control modules, and other 13.8 V devices without needing intermediate battery banks or additional converters. What this product does and why you need it This isolated buck power supply steps down a nominal 140 V input (operating range 75–150 VDC) to a fixed 13.8 V DC output, delivering up to 10 A maximum. It solves the common problem of powering lowvoltage equipment from voltage sources such as vehicle, industrial, or renewable power buses while maintaining isolation for safety and signal integrity. Key attributes Functionality: Isolated stepdown (buck) DCDC converter that provides a regulated 13.8 V DC output. Input compatibility: Operates from 75–150 V DC (nominal 140 V). Output performance: Fixed 13.8 V DC output, up to 10 A (maximum). Isolation: Provides galvanic isolation between input and output to reduce interference and improve safety. Intended applications: Designed to integrate into systems that require conversion from voltage DC rails to 13.8 V DC loads. Typical use cases Mobile or heavyduty vehicles: Power 13.8 V electronics, radios, and control units directly from voltage vehicle buses or hybrid system rails without intermediate power stages. Telecommunications and industrial systems: Feed 13.8 V equipment (e.g., radio transceivers, backup chargers, control modules) from distributed voltage DC supplies while keeping signal and chassis grounds isolated. Renewable and energy storage installations: Derive 13.8 V power for monitoring equipment, charge controllers, or auxiliary devices from solar arrays, battery banks, or DC distribution networks operating above 75 V. Installation and compatibility notes Accepts voltage DC within the specified 75–150 V range; ensure input source remains inside this range for correct operation. Designed to provide a stable 13.8 V output up to the stated 10 A maximum. Verify load requirements do not exceed the converter's maximum current rating. Because the unit is isolated, plan grounding and wiring to take advantage of galvanic separation where required by system design or safety standards. Specifications (as provided) Input voltage range: 75–150 V DC (nominal 140 V) Output voltage: 13.8 V DC Maximum output current: 10 A (MAX) Topology: Isolated stepdown (buck) DCDC converter This converter is intended for applications that require reliable conversion from voltage DC rails to a regulated 13.8 V output with isolation between input and output. Ensure system wiring and load characteristics match the stated input/output specifications.