onsemi provides advanced semiconductor solutions for efficient and compact OBC designs in next-generation electric vehicles
Key Features
- onsemi offers power electronics that can scale OBC design from 1-Phase low power (3.7 kW) to 3-Phase 22 kW for high-end platforms
- Uses EliteSiC Automotive Power Modules (APM), discrete MOSFETs and diodes for high efficiency and thermal performance.
- Such EVs are not Next-gen, they already exist. They are considered as high-end (more expensive) EV platforms
- Find optimized integrated power modules for both PFC and DC/DC stage, paired together with onsemi’s galvanically isolated gate drivers
Applications
- Battery Electric Vehicles (BEVs) and Plug‑in Hybrid EVs (PHEVs)
- Level‑2 AC home and public charging (7–22 kW)
- 400V and 800V EV platforms requiring efficient, compact OBC systems
| Feature | OBC Overview | EliteSiC Tech | Gate Drivers & Modules |
|---|---|---|---|
| Power Levels | 3.7–22 kW Power Scaling | High-efficiency M3S SiC Technology | APM modules enable higher power density |
| Battery Voltage | Supports up to 800 V systems | Available for 400 - 800 V battery architectures | Gate drivers matched to SiC |
| Efficiency | High power density | Superior thermal & switching performance | Robustness and shoot-through protection |
| Topology | PFC + DC/DC | Totem-pole PFC recommended with SiC | Various Configurations for PFC & DC/DC |
| Applications | BEVs & PHEVs | Improve charging efficiency and speed | Improve system size, weight and power density |
On-Board Chargers: Core Concepts
OBC in EVs and PHEVs
On-Board Chargers are a critical component in plug-in hybrid and battery electric vehicles, converting AC power from the grid into DC power to charge the high-voltage battery.
Evolving OBC Design Trends
The market is trending towards higher power, increased efficiency, and reduced size, weight, and cost (SWaP), driven by the adoption of advanced wide bandgap materials like SiC.
Key System Components
EliteSiC Power Modules
onsemi's EliteSiC Power Modules and MOSFETs enable a highly integrated and compact design for high-power OBCs, improving thermal performance and reliability.
Isolated Gate Drivers
Isolated gate drivers are essential for controlling SiC devices, ensuring high efficiency and reliable switching, with a negative bias for optimal performance.
DC/DC Converters
The OBC system can also include a DC-DC converter to provide a low-voltage rail for vehicle accessories and other electronic systems.
Partner with EBV Elektronik for Your OBC Design
Leverage our expertise and comprehensive portfolio of onsemi products to optimize your next On-Board Charger project. Contact us today to discuss your specific requirements.