PANJIT's fast recovery epitaxial diode (FRED) Gen.1 offers a tailored solution for an array of power conversion circuits, including Boost PFC, Vienna PFC, and Boost converters. The selection of FRED hinges upon the specific requirements of different switching frequencies, where a delicate trade-off exists between forward voltage drop (VF) and reverse recovery charge (QRR). Achieving lower QRR necessitates higher doping concentrations in the epitaxial layer, elevating VF. Thus, optimizing FRED performance becomes paramount in design considerations.
The FRED Gen.1 lineup encompasses two variants: Speedy FRED and Optima FRED. Speedy FRED minimizes QRR, making it apt for high-frequency switching applications like CCM Boost PFCs, Vienna PFCs, and boost converters. On the other hand, Optima FRED reduces VF, catering to low-frequency and high-conduction scenarios such as CrCM and DCM boost PFC, ORing, and line grid rectification.
System designers benefit from PANJIT's diverse FRED product range, enabling them to select the most suitable variant for their applications. The FRED Gen.1 series offers breakdown voltages of 650 V, 1,000 V, and 1,200 V, with current ratings ranging from 8 A to 60 A. Moreover, it presents various discrete packages including TO-220AC, ITO-220AC, TO-263, TO-247AD-2LD, and TO-247AD-3LD, ensuring compatibility with a wide range of system designs.
Best trade-off on VF and TRR
Low leakage current
Soft recovery characteristic for better EMI
Best efficiency
Best combination with power switches
Server power
Telecom power
TV power
PC power
PV inverters
ESS
BMS
Home appliances
EV charging systems
UPS
Industrial motors
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