onsemi provides advanced semiconductor solutions for efficient and compact OBC designs in next-generation electric vehicles
Key Features
- Supports 3.3–22 kW charging power for BEVs and PHEVs
- Uses EliteSiC MOSFETs and diodes for high efficiency and thermal performance
- Supports up to 800 V battery architectures for next‑gen EVs
- Includes PFC + DC/DC architectures with 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 | 3.3–22 kW OBC support | High-efficiency SiC MOSFETs | APM modules enable high-power OBC |
| Battery Voltage | Supports up to 800 V systems | Optimized for 400–800 V EVs | Gate drivers matched to SiC |
| Efficiency | High power density | Superior thermal & switching performance | Reduces losses in PFC/DC-DC |
| Topology | PFC + DC/DC | Totem-pole PFC w/ SiC | Isolated drivers for PFC & DC/DC |
| Applications | BEVs & PHEVs | Fast charging & 800V EVs | Integration into OBC power stages |
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.