COSEL & Powerbox Through-Hole DC-DC Converters
Board-Level DC Power Conversion Across a Wide Range of Applications
Through-Hole DC-DC Converters for Reliable Integration into Demanding System
COSEL and Powerbox offer a comprehensive portfolio of through-hole DC-DC converters designed for direct PCB integration in industrial, medical, railway, and defence applications. With a broad selection of power classes, input voltage ranges, and output configurations, engineers have access to proven solutions that address a wide variety of system architectures - from lightweight, low-power designs to high-power brick-format modules.
The through-hole format provides mechanical robustness and thermal stability, making it particularly well suited to environments subject to vibration, temperature cycling, and extended operating periods.
Designed for Demanding Applications
Through-hole DC-DC converters from COSEL and Powerbox serve a broad range of sectors, including:
- Industrial automation, process control, and embedded systems
- Medical devices and patient-critical equipment
- Railway and transportation systems
- Marine and defence applications
- Telecommunications and networking infrastructure
- Test and measurement equipment
Technical Characteristics
The through-hole DC-DC converter range covers a wide technical scope:
- Output power from 1 W to over 1,400 W
- Input voltage ranges from 4.5 V up to 435 V DC, including ultra-wide 6-60 V and 12:1 ratio options
- Single, dual, and triple output configurations
- Output voltages from 1.5 V to 65 V
- Isolated and non-isolated topologies
- Efficiency up to 95% in selected series
- Operating temperature range from -40 °C to +100 °C depending on series
- Galvanic isolation from 1,500 V DC to 6,000 V DC
- PMBus interface on selected high-power series
- Built-in remote On/Off and Power Good signalling
- Conduction and convection cooling options
- Industry-standard package sizes including 1/4 brick, 1/2 brick, and full brick formats
- EN and UL safety approvals; IEC 60601-1 compliance on medical series
- Railway certification on applicable series (EN 50155/applicable standards)
- Manufacturer warranties up to 10 years on selected COSEL series
Portfolio Highlights
The portfolio spans a wide range of converter families to suit different design requirements. The MGXS and MGXW Series from COSEL feature an ultra-wide 6-60 V input range with 1,500 V DC isolation and no built-in electrolytic capacitors - a design approach that supports long-term reliability in temperature-sensitive environments. The MHFS and MHFW Series are fully potted, medically approved converters built to an industry-standard pin layout, suited for integration into compact medical devices. The DCS Series covers high-power requirements with up to 1,404 W output, a 200-435 V DC input range, and support for CVCC control, parallel operation of up to 12 units, and conduction cooling - making it well suited for marine, defence, and heavy industrial use.
The MGS, MGFS, MGW, MGFW, and CHS Series from COSEL cover a broad output power range with high efficiency, and selected models include PMBus connectivity for system-level power management.
Medical-Grade Converter Options
For applications requiring compliance with medical safety standards, the portfolio includes dedicated series from both COSEL and Powerbox. The MHFS and MHFW Series carry medical approvals and are designed with fully potted housings for use in patient-adjacent environments. The Powerbox PMM and PMP Series offer 2 × MOPP/2 × MOOP isolation with leakage currents as low as 2 µA, providing the electrical safety margins required for body-applied and patient-connected equipment.
Railway and Infrastructure Solutions
Several series within the through-hole portfolio carry railway certification, including the Powerbox MAE, MAF, PED, PQB, and PQAE Series. These converters are engineered to meet the specific demands of rolling stock and trackside infrastructure - wide input voltage tolerance, vibration resistance, and compliance with applicable railway standards. High-isolation designs and wide operating temperature ranges further support deployment in infrastructure and transportation environments.
Safety and Quality Standards
Products in this portfolio comply with internationally recognised safety and quality requirements. EN and UL approvals cover the core COSEL and Powerbox series. Medical series meet IEC 60601-1 requirements. Railway-compliant series address applicable rolling stock standards. Long product lifecycles and high manufacturing quality support ongoing serviceability and system continuity.
A Broad Portfolio from Established Manufacturers
COSEL has been developing DC-DC power conversion products since 1969. Powerbox is a long-established European manufacturer with particular strength in railway, defence, and industrial power electronics. Together, they offer a complementary through-hole converter portfolio that covers the full range from sub-watt designs to multi-kilowatt system-level solutions.
As an authorised partner for both COSEL and Powerbox, FORTEC Switzerland supports you in identifying the right through-hole DC-DC converter for your application - from technical consultation through to project-specific configuration and procurement.