Redundant DC/DC Converter 3600W

When power continuity is non-negotiable, the CKR-3600 by Premium PSU delivers. This modular redundant DC/DC converter provides up to 3,600 W of continuous power — with a 5,400 W peak capability for 10 seconds — in a standard 19″ 4U subrack format. Designed and manufactured by Premium S.A. in Barcelona, the CKR-3600 is built for industrial environments where reliability, scalability and digital control are critical requirements.

CKR-3600: Redundant DC/DC Converter for Demanding Applications

When power continuity is non-negotiable, the CKR-3600 delivers. This modular DC/DC converter system provides up to 3,600 W of continuous power — with a 5,400 W peak capability for 10 seconds — in a standard 19″ 4U subrack format.

Modular and redundant by design

The CKR-3600 is built around up to six hot-swappable CKS-600 modules of 600 W each, internally connected in redundant mode. Each module can be removed and replaced without interrupting system operation. Input and output lines can be configured independently or merged, giving engineers full flexibility to define the redundancy architecture that best fits their system.

MOS ORing circuitry is integrated in every module, ensuring that any individual failure is isolated without affecting the rest of the system.

Key specifications

• Input voltage: 48 Vdc or 110 Vdc (66–144 V range)
• Output voltage: 48 Vdc (24 Vdc available under request)
• Continuous output power: 3,600 W / Peak: 5,400 W (10 s)
• Efficiency: up to 92%
• Output ripple: < 100 mVpp
• Operating temperature: –25°C to +55°C at full load; up to –40°C with derating
• Isolation Input–Output: 3,000 Vac / 4,200 Vdc
• Cooling: natural convection (forced air optional for stacked configurations)

Full digital control and communications

Each module shares real-time voltage, current and temperature data via CAN Bus or Modbus RS-485. Parameters such as current limit are configurable remotely through communications. The optional DAS-5603 touchscreen accessory allows local monitoring and interaction directly on the rack. Ethernet connectivity is also available via the expansion module.

Up to four CKR-3600 units can operate in parallel as a single system, scaling total capacity to 14.4 kW.

Protection and compliance

The CKR-3600 includes comprehensive protection: overcurrent, overvoltage with redundant feedback shutdown, short-circuit and per-module input fusing. Output failure is signalled via relay contacts configurable in parallel across all modules for centralized alarm detection.

Certified CE and UKCA (2025), compliant with EN 62368-1, EN 61000-6-2, EN 61000-6-4 and EN 50121-3-2, and RoHS/REACH compliant. Manufactured in L’Hospitalet de Llobregat by Premium S.A., ISO 9001 and ISO 14001 certified.

 

This product has been developed by Germán Viñas, HW Product Leader Junior at Premium S.A.

 

 

 

 

 

 

 

 

 

 

Download the full datasheet and explore the complete CKR-3600 technical specifications