MUMBAI, India, Feb. 27 -- Intellectual Property India has published a patent application (202541131088 A) filed by Dr. G. Sundar; S. Saijagatheeswaran; Dr. B. Tharani; K M. Sanjay; and R. Karthikeyan, Coimbatore, Tamil Nadu, on Dec. 24, 2025, for 'high-density bidirectional ev on-board charger with totem-pole pfc and llc converter.'
Inventor(s) include Dr. G. Sundar; S. Saijagatheeswaran; Dr. B. Tharani; K M. Sanjay; and R. Karthikeyan.
The application for the patent was published on Feb. 27, under issue no. 09/2026.
According to the abstract released by the Intellectual Property India: "This work presents the design, implementation, and validation plan for a high-power-density, bidirectional onboard charger (OBC) for electric vehicles. The proposed OBC integrates a bridgeless totem-pole power-factor-correction (PFC) front end with an isolated LLC resonant DC-DC stage, leveraging wide-bandgap power semiconductors (SiC and GaN) to minimize switching and conduction losses. The system supports CC/CV battery charging, bidirectional energy flow for V2G/V2H, and compliance with automotive charging and EMC standards. Key innovations include hybrid SiC/GaN device allocation, adaptive PFC modulation to guarantee ZVS across a wide AC input range, and a compact thermal routing scheme for high power density. Target performance: -6.6 kW peak power, 96% peak system efficiency, unity power factor, low input THD, and compliance with lEC 61851 EMC requirements."
Disclaimer: Curated by HT Syndication.
