Not Recommended for New Designs ADDENDUM Low input voltage for the Granite Power PFC Front End (GP-MPFC1H21) Granite Power Mission Power The MIL-COTS PFC Front End can accept a wide 102-264 VAC input range, frequencies from 47 to 440 Hz, and deliver up to 1400 W of output power. It has been determined that the product will operate to input voltages as low at 85 VAC*, provided that an additional de-rating is applied. The figure below displays the required de-rating based on input voltage and baseplate temperature, including operation to 85 VAC and up to 100 °C. The PFC Front End will follow the de-rating below for all rated frequencies. The PFC Front End is safety agency certified (UL and TUV) for operation down to 85 VAC, provided that the de-rating outlined below is followed. PFC Front End Power De-rating 1600 1400 1200 Output Power (W) 1000 800 600 400 200 0 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Baseplate Temperature (°C) 102 - 114 Vac 115 - 196 Vac 197 - 264 Vac 85 - 101 Vac *LONG-TERM LOW INPUT VOLTAGE TESTING HAS NOT BEEN PERFORMED ON THIS PRODUCT, SO IT IS RECOMMENDED THAT ANY INPUT VOLTAGES FROM 85 TO 101 VAC ARE OF A SHORT DURATION. vicorpower.com GP-MPFC1H21 2/13