The On Board Charger (OBC) converts AC power supplied from either a household outlet or charging station into DC power, which charges the high-voltage battery, drive for EV and PHEV.
The On Board Charger (OBC) uses low on-resistance Si IGBTs or SiC MOSFETs to reduce conversion loss. The on-resistance has the characteristic to drop as the gate voltage rises so it is recommended to design a gate drive circuit using, for example, an Si IGBT with a high voltage of around 15V or an SiC MOSFET with a high voltage of around 18V.
ABLIC has a lineup of LDOs that can output a high voltage required for the gate driver circuit. In addition, our lineup offers LDOs with built-in watchdog timers for monitoring MCUs, and operational amplifiers ideal for current monitoring of PFC. ABLIC undoubtedly provides ICs ideal for On Board Chargers (OBC).