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DCDC-S
Product Family
Product Family
Flexible. Modular. Digitally controlled.
Kolibrik’s DCDC-S Product Family delivers precise, reliable power conversion with a modular and robust architecture — designed to meet the demanding voltage and current control requirements of hydrogen applications, from lab benches to industrial installations.
Built for versatile deployment across DC power applications, including examples like fuel-cell stacks, electrolyzers, and other systems requiring modular, scalable conversion. Built for adaptability, these converters scale to match your power needs — from lab setups to industrial stacks.
Each unit uses 1 to 4 modules, with two voltage tiers (up to 60 V or 90 V), and a total of 14 configurations to choose from.
Scalability
DCDC-S Product Family delivers scale and performance exactly for your needs including dual output variants.
Switchable Output Control
Constant voltage and constant current modes, including current limitations.
Unit Parallelization
Each unit can operate independently or in parallel, enabling distributed power control in complex systems.
Digitally Controlled
Real-time insights and remote configurability for your application.
Each DCDC-S unit is a smart power building block. Modules can be connected in parallel to deliver the total power your application requires — whether you're running a compact test setup or a high-power industrial system.
Type Variants
| Model | No. of modules | Min. input | Max. input | Max. input
current |
Min. output | Max. output | Max. output
current |
| DCDC-S4C-90/104 | 4 | 15 V | 90 V | 104 A | 0 V | 90 V | 104 A |
| DCDC-S3C-90/78 | 3 | 78 A | 78 A | ||||
| DCDC S2C-90/52 | 2 | 52 A | 52 A | ||||
| DCDC-S1C-90/26 | 1 | 26 A | 26 A | ||||
| DCDC-S4C-60/160 | 4 | 15 V | 60 V | 160 A | 0 V | 60 V | 160 A |
| DCDC-S3C-60/120 | 3 | 120 A | 120 A | ||||
| DCDC-S2C-60/80 | 2 | 80 A | 80 A | ||||
| DCDC-S1C-60/40 | 1 | 40 A | 40 A | ||||
|
Dual-output variants
|
|||||||
| DCDC-S4C-90/78+26 | 3+1 | 15 V | 90 V | 104 A | 0 V | 90 V | 78 + 26 A |
| DCDC-S3C-90/52+26 | 2+1 | 78 A | 52 + 26 A | ||||
| DCDC-S2C-90/26+26 | 1+1 | 52 A | 26 + 26 A | ||||
| DCDC-S4C-60/120+40 | 3+1 | 15 V | 60 V | 160 A | 0 V | 60 V | 120 + 40 A |
| DCDC-S3C-60/80+40 | 2+1 | 120 A | 80 + 40 A | ||||
| DCDC-S2C-60/40+40 | 1+1 | 80 A | 40 + 40 A | ||||
Smarter Power Conversion
Need constant voltage? Prefer current control? With DCDC-S, you can do both — and switch between them dynamically.
And yes, it’s all digitally controllable and monitorable, giving you real-time insights and remote configurability for complex or distributed power architectures. That includes setups with system batteries, peak-shaving logic, or multiple hydrogen sources running in parallel with individual current contributions.
For the last six variants, the modules offer flexible power distribution. They can operate as a combined single power source or split their output between two separate power supply branches, allowing for different power ratios tailored to your specific needs. A typical use case for the dual-output configuration is to provide Balance-of-Plant (BoP) power alongside the main stack output — powering auxiliary systems like pumps, valves, and controllers.
Adaptable Performance
The DCDC-S Product Family supports both constant voltage and constant current operation, including current limitation. This makes it ideal for systems with a battery buffer, where the converter can intelligently switch modes depending on the battery’s state of charge and real-time power demand.
The current control mode also enables smart parallelization of multiple DC/DC units — each unit can be activated independently and contribute a different current or power level. That gives you precise, distributed control across complex architectures.
Technical Parameters
| Digital control | CAN, RS-485, USB |
| Cooling | Air |
| Design | Box (dimensions: 428 × 136 × 270 mm) |
| Input voltage | 15 … 90 V |
| Output voltage | 0 … 90 V |
| Max. power | 9 kW |
| Topology | buck-boost (step-up & step-down) |
| Isolation | non-isolated |
| Modularity | 1 .. 4 modules in parallel |
| Power | 1 .. 2 kW per module (depends on max. current per module) |
| Efficiency | up to 97 % |
| Output control |
|
| Controller options |
|
Use Cases
From fuel-cell stacks to BoP and hybrid storage — precision power conversion across your hydrogen system.
Stack output regulation
Stabilizes variable output for downstream use
Balance of Plant (BoP) power supply
Powers pumps, valves, sensors and controls
Battery Peak-Shaving
Intelligent mode switching based on battery charge and real-time load — constant voltage or current as needed.
Multi-stack hydrogen power sources
Combines multiple stacks with individual control
Electrolyzer supplies with precise current control
Delivers accurate, limited current for efficiency
Pre-conditioning for inverters with incompatible inputs
Matches stack output to inverter input range
Example setup
- H2FC stack (35–72 V) → DCDC-S (output 48 V) → Inverter (48 VDC → 230 VAC)
Customization
Ready for your needs
We offer DCDC-S models with custom-defined parameters, tailored mechanical and thermal setups, or as part of complete development services for custom projects and series production.
Need something specific? Just tell us your key requirements — input/output voltage and current ranges, preferred cooling method, control interface needs, and any other application-specific constraints — we offer customized solutions!
Tailored to your setup
We don’t do one-size-fits-all. We offer:
- Stand-alone converters with fixed output settings
- Digital controlled modules
- Open-frame variants for seamless system integration
- Fully customized solutions for OEM or serial production
- Flexible mechanical and cooling options
- Complete development services for custom needs
