Commercial vehicles — trucks, coaches, on-board DC/DC
DIA Auxiliary DC/DC Converter
3 / 6 / 12 kW · 80–1100 Vdc input · liquid or air cooled
Power conversion — DC/DC
Overview
Auxiliary DC/DC converters feeding the low-voltage rails of commercial and special vehicles, vessels and machinery. Optional liquid or air cooling with IP67 rating, fully digital control, isolated power with high anti-interference, dual hardware and software protection.
Key features
- CAN communication with bootloader support
- Built-in parameters upgradable via background software
- EMC compliant with GB; compatible with CE and UL
- 3 kW, 6 kW and 12 kW series covering 80–1100 Vdc input
Specification
Technical data
3 kW series selection table
| Model | Rated Vin | Vin range | Rated Pout | Rated Vout | Iout range |
|---|---|---|---|---|---|
| DIA2605-XXX-XX | 144 V | 80–200 VDC | 3.0 kW | 27 V | 0–109 A |
| DIA2606-XXX-XX | 360 V | 200–500 VDC | 3.0 kW | 27 V | 0–109 A |
| DIA2607-XXX-XX | 540 V | 400–900 VDC | 3.0 kW | 27 V | 0–109 A |
| DIA2607-XXX-XX | 720 V | 500–1000 VDC | 3.0 kW | 27 V | 0–109 A |
6 kW series selection table
| Model | Rated Vin | Vin range | Rated Pout | Rated Vout | Iout range |
|---|---|---|---|---|---|
| DIA2481-XXX-XX | 540 V | 600–1000 VDC | 6.0 kW | 720 V | 0–9 A |
| DIA2487-XXX-XX | 720 V | 400–900 VDC | 6.0 kW | 27.5 V | 0–220 A |
| DIA2487-XXX-XX | 540 V | 500–1100 VDC | 6.0 kW | 27.5 V | 0–220 A |
| DIA2488-XXX-XX | 540 V | 400–900 VDC | 6.0 kW | 54 V | 0–111 A |
| DIA2489-XXX-XX | 540 V | 400–900 VDC | 6.0 kW | 72 V | 0–80 A |
12 kW series selection table
| Model | Rated Vin | Vin range | Rated Pout | Rated Vout | Iout range |
|---|---|---|---|---|---|
| DIA2981-XXX-XX | 540 V | 600–1000 VDC | 12 kW | 720 V | 0–18 A |
| DIA2987-XXX-XX | 720 V | 400–900 VDC | 12 kW | 27.5 V | 0–440 A |
| DIA2987-XXX-XX | 540 V | 500–1100 VDC | 12 kW | 27.5 V | 0–440 A |
| DIA2988-XXX-XX | 540 V | 400–900 VDC | 12 kW | 54 V | 0–222 A |
| DIA2989-XXX-XX | 540 V | 400–900 VDC | 12 kW | 72 V | 0–160 A |
Application
Where it is used
Electric vessels — large ships
Special vehicles — sanitation trucks
Construction machinery — loaders
Agricultural machinery — tractors
More in dc/dc converters
Related reading
From the engineering notes
Background on the design decisions behind this component — all articles.
Isolated vs non-isolated DC/DC for fuel cell systems
The topology choice affects safety, cost and coolant insulation. Here is how to decide for your application.
Isolated DC-DC first, then the coolant piping
The 100 Ω/V and 500 Ω/V rules come from touch-safety limits, not from the converter. Worked numbers for a 500 V stack on an 800 V bus, and what they mean for hose length and rigid tube.
DIA Auxiliary DC/DC Converter — product brochure (PDF)
Full specifications, model selection tables and engineering notes. Two pages, English.
Download PDF
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