Power
On board wireless charger for EVs provides galvanic isolation
An On-Board Charger (OBC) is used in an Electric Vehicle (EV) or Hybrid Electric Vehicle (HEV) to charge the traction battery from 48-800V.
Functions of the OBC from Texas Instruments include:
- Converting the grid 50/60Hz to DC
- Adjusting the DC voltage to the levels required by the battery
- Providing galvanic isolation
- Power Factor Correction (PFC)
- Motor control to prevent damage by arcs caused by hot unplugging
Wireless chargers are gaining significant traction in the automotive industry, and are expected to have at least 95% efficiency of wired charger electronics.
Alignment of both transmission and receiver coils play a significant role in improving the charger's efficiency and performance.
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