Fairchild's family of automotive high voltage rectifiers combine outstanding performance with automotive-level reliability. The family is qualified to meet the industry's AEC-Q101 specification and available in a broad range of voltage and current ratings, which makes them ideal for the on-board chargers of plug-in hybrid and electric vehicles, as well as DC to DC converters, stationary chargers and other high-voltage powertrain applications. This product family is currently divided into three technology platforms - Ultrafast, Hyperfast and STEALTHTM - that were designed considering the trade-offs between switching loss and conduction loss.
Ultrafast has the lowest VF (forward voltage), which makes it suitable for low switching frequency applications and applications without a strict EMI requirement. The Hyperfast devices have lower turn off time for faster switching applications such as PFC stages and secondary rectification stage of onboard charger.
Stealth rectifiers are faster than the Hyperfast and offer soft recovery to reduce noise and ringing at the cost of a somewhat higher VF (compared to Ultrafast) and higher reverse recovery charge Qrr (compared to Hyperfast). They are also suitable for high switch frequency applications with an EMI requirement, such as PFC.
Fairchild's nine new automotive high voltage rectifiers are available with breakdown voltages of 600V and 1000V, forward currents from 15A to 80A and multiple package options, including TO247, TO220 and die sales (wafer, Tape &Reel and Known Good Die). With these new additions, Fairchild's portfolio of automotive qualified rectifier is made up of 22 products. Fairchild can also customize these devices to suit manufacturers' specific needs, such as custom dies and breakdown voltages.