Onboard chargers for passenger and commercial platforms.
High-efficiency AC→DC modules from 3.3 kW to 22 kW. Liquid-cooled cold plate. Designed for global homologation and seamless integration into your VCU stack.
- Power range
- 3.3–22 kW
- Peak η
- ≥96%
- DC output
- 200–750 V
- Aux rails
- 12 / 24 V
- Comms
- CAN-FD + LIN
- EMC
- CISPR 25 Cl. 3
Joulepoint
Hardware · Onboard Power Electronics
From two-week scope to eight-week prototype
- Peak efficiency
- ≥96%
- Operating range
- –40 → +85°C
- Indian standard
- AIS-038 Rev2
- Safety process
- ISO 26262
22 kW model at full rated load.
ISO 16750-3 thermal & vibration qualified.
Plus CISPR 25 Class 3 + ISO 21780.
Workflow-compatible for ASIL-B/C programmes.
Designed for OEM Production Programmes
Joulepoint onboard chargers combine wide-bandgap power electronics with intelligent diagnostics. Each unit is validated for harsh environments, supports ISO 26262 functional safety workflows, and offers configurable communication stacks to match your vehicle architecture.
Compact thermal package
Aluminium liquid-cooled cold plate with integrated pump headers keeps junction temperatures under control during rapid AC charging.
Configurable communication
CAN 2.0B, LIN bridges, and optional Ethernet diagnostics deliver deep visibility without rewriting your VCU.
Safety built in
Meets AIS-038 Rev2, CISPR 25 Class 3, and ISO 21780 requirements out of the box with redundant isolation monitoring.
Manufacturing ready
Traceable serialisation, automated end-of-line test reports, and ERP integration reduce your PPAP timeline.
Variant Comparison
| Specification | 3.3 kW | 7 kW | 11 kW | 22 kW |
|---|---|---|---|---|
| Input voltage | 85 – 265 V AC single-phase | 175 – 265 V AC single-phase | 304 – 456 V AC three-phase | 304 – 456 V AC three-phase |
| Output voltage window | 200 – 450 V DC | 200 – 450 V DC | 400 – 650 V DC | 450 – 750 V DC |
| Nominal DC voltage | 330 V DC | 380 V DC | 540 V DC | 640 V DC |
| Max output current | 10 A | 20 A | 20 A | 40 A |
| Peak efficiency | ≥94% | ≥95% | ≥95% | ≥96% |
| Auxiliary power rails | 12 V / 24 V (dual rail) | 12 V / 24 V (dual rail) | 12 V / 24 V (dual rail) | 12 V / 24 V (dual rail) |
| Communications | CAN 2.0B (500 kbps) | CAN 2.0B + LIN gateway | Dual CAN 2.0B, ISO 15118 powerline pass-through | Dual CAN 2.0B, Ethernet diagnostics |
| Mass | 6.8 kg | 8.1 kg | 10.5 kg | 13.2 kg |
Environmental testing covers –40 °C to 85 °C operation, 95% relative humidity, and random vibration per ISO 16750-3. Custom housings and connector pin-outs are available upon request.
System Integration Toolkit
Joulepoint provides calibration files, CAN DBC definitions, Functional Safety Concept documentation, and reference wiring harnesses. Our engineering team supports DFMEA reviews and helps you tailor diagnostic trouble codes to your service tooling.
- Turnkey validation artefacts for AIS-038, AIS-048, and IEC 61851 compliance.
- Integration with Joulepoint CSMS for over-the-air firmware updates and health telemetry.
- Optional ISO 15118 / Plug & Charge enablement through our secure credentialing service.
Sample Development Timeline
- Two-week discovery workshop covering mechanical, electrical, and thermal interfaces.
- Eight-week prototype delivery with validation data pack and calibration files.
- Pilot production support with end-of-line programming, traceability, and QA sign-off.
Need a bespoke power stage or alternative connector layout? Talk to us about co-developing a variant for your platform roadmap.
Build your own onboard charger with Joulepoint as your engineering partner.
For vehicle OEMs and tier-1 manufacturers — we are your in-house engineering team for your EV vehicle programme. Co-engineered, certified, manufactured to your name. You own the IP, the brand and the customer relationship.
Your brand. Your form-factor.
Mechanical, label, firmware boot screen, OBD identification — branded to your platform. Joulepoint is the engineering, your customers see your name.
Co-engineered to your spec
We start with your system requirements (power class, voltage rails, comms, certifications). Our team works alongside yours from architecture to BOM freeze.
Source artefacts handed over
Schematics, BOM, firmware source, AUTOSAR module catalogue, ISO 26262 process documentation, EOL test scripts — all packaged for your manufacturing partner.
Long-term technology partnership
Roadmap alignment, regulatory tracking (AIS / IEC / UN-ECE), field-data driven iterations. We stay engaged after start of production.
Send a one-pager — power class, target vehicle, certifications, timeline. An engineer responds within one business day.
Same engineering. Your nameplate.
The reference design ships with Joulepoint branding. For OEM programmes we re-skin mechanicals, firmware boot screen, mobile app and packaging to your identity.
Ships under the Joulepoint name with our nameplate and firmware identity.
Same hardware platform, re-skinned to your brand. You own the IP, sales channel and support relationship.
What gets re-skinned
- Mechanical nameplate & label artwork
- Firmware boot screen & UI identity
- Companion mobile / driver app theming
- Packaging, EOL test labels, OBD VIN data
Three ways to work with us.
Every conversation starts with an engineer — not a sales pitch. Pick the path that fits your team.
R&D collaboration
Co-develop a prototype with our power-electronics and embedded teams. Joint IP, agreed milestones.
Discuss collaborationEnterprise deployment
CSMS, Joulepoint Edge, and Fleet deployments with named engineers on your account.
Talk to salesOEM integration
Onboard chargers, traction inverters, VCU/ECU integration for vehicle programmes.
Start an OEM brief