COSEL & Powerbox Isolated DC/DC Converters
Board-Level DC Power Conversion for Industrial, Medical, Railway, and Defence Applications
Modern electronic systems across virtually every industry require isolated DC/DC conversion at the board level. Whether the goal is voltage translation, noise isolation between functional blocks, protection of sensitive circuitry, or compliance with safety standards requiring galvanic separation, isolated DC/DC converters are a fundamental building block of robust system design.
FORTEC Switzerland offers a comprehensive portfolio of isolated DC/DC converters from COSEL and Powerbox, covering output power levels from below 1 W up to 500 W, with a broad selection of input voltage ranges, output configurations, mounting formats, and application-specific approvals. This depth of choice means engineers can identify a well-matched solution for general industrial use, medical-grade applications, railway installations, defence systems, and everything in between.
Designed for Demanding Applications Across Multiple Sectors
The portfolio addresses a wide range of application environments, including:
- Industrial automation, process control, and embedded systems
- Medical devices and patient-adjacent equipment requiring low leakage currents and high isolation
- Railway and transportation systems requiring certified compliance with relevant rolling stock standards
- Military and defence applications demanding conduction cooling and reverse polarity protection
- Telecommunications, networking, and infrastructure equipment
- Test and measurement systems with mixed signal and power requirements
Technical Characteristics
The isolated DC/DC converter range spans a broad technical scope to accommodate diverse system requirements:
- Output power from below 1 W up to 500 W within the combined portfolio
- Input voltage ranges from 4.5 V up to 425 V DC, including ultra-wide 12:1 ratio options and ranges up to 160 V DC
- Single, dual, and triple output configurations available across the range
- Output voltages from 1.5 V to 53 V covering standard logic, control, and communication supply levels
- Isolation voltages from 1,500 V DC up to 6,000 V DC depending on series
- Medical-grade series with 2× MOPP or 2× MOOP isolation and leakage currents as low as 2 µA
- Railway-certified series compliant with applicable rolling stock standards
- Military and defence compliant series with conduction cooling and series/parallel operation capability
- Ultra-wide input range series with no built-in aluminium or tantalum electrolytic capacitors for enhanced long-term reliability
- Fully potted housings on selected series for resistance to moisture, vibration, and contamination
- Industry-standard package sizes including 1/4 brick, 2×2 inch, and through-hole PCB mount formats
- PMBus interface on selected high-power series for system-level power management
- Built-in Remote On/Off and overcurrent protection across most series
- Convection and conduction cooling options to suit sealed and open enclosures
- EN and UL safety approvals on COSEL series; 5- and 10-year manufacturer warranties depending on series
- Long product lifecycles and consistent manufacturing quality from both COSEL and Powerbox
A Portfolio Built Around Application Requirements
What makes this combined COSEL and Powerbox portfolio particularly useful is the breadth of specialist variants available within it. Medical designers can select series specifically engineered to meet IEC 60601-1 isolation and leakage requirements. Railway system integrators can choose from certified converters built to tolerate the wide input voltage swings and vibration profiles of rolling stock environments. Defence programmes requiring conduction-cooled, ruggedised converters with reverse polarity protection and operation across extended input voltage ranges have dedicated series available. And for general industrial board-level designs, a wide selection of convection-cooled, fully potted through-hole converters with industry-standard footprints covers the majority of common requirements.
Across all segments, long product lifecycles and high manufacturing quality from both COSEL and Powerbox support ongoing system serviceability and reduce the risk of mid-lifecycle component obsolescence.
FORTEC Switzerland supports you in identifying the right isolated DC/DC converter for your application - from initial specification and technical consultation through to project-specific procurement and long-term supply.