Vicor VI-J00 Family DC-DC Converters and Configurable Power Supplies - Manual (Page 7)

Design Guide & Applications Manual
For VI-200 and VI-J00 Family DC-DC Converters and Configurable Power Supplies
VI-200 and VI-J00 Family Design Guide Rev 3.5 vicorpower.com
Page 6 of 98
Apps. Eng. 800 927.9474 800 735.6200
SAFETY CONSIDERATIONS
Shock Hazard. Agency compliance requires that the
baseplate be grounded.
Fusing. Internal fusing is not provided in Vicor DC-DC
converters. To meet safety agency conditions, a fuse is
required. This fuse should be placed in the positive input
lead, not the negative input lead, as opening of the
negative input lead will cause the GATE IN and GATE OUT
to rise to the potential of the +IN lead, causing possible
damage to other modules or circuits that share common
GATE IN or GATE OUT connections.
Safety agency conditions of acceptability require module
input fusing. The VI-x7x, VI-x6x and VI-x5x require the use
of a Buss PC-Tron fuse, or other DC-rated fuse. See below
for suggested fuse ratings.
The safety approvals section of the Vicor website should
always be checked for the latest fusing and conditions of
acceptability information for all DC-DC converters
including the MegaMod family.
Package Size Required Fuse Package Size Required Fuse
VI-27x-xx PC-Tron 2.5 A VI-J7x-xx PC-Tron 2.5 A
VI-26x-xx PC-Tron 3 A VI-J6x-xx PC-Tron 3 A
VI-25x-xx PC-Tron 5 A VI-J5x-xx PC-Tron 5 A
VI-2Tx-xx PC-Tron 5A VI-JTx-xx PC-Tron 5A
VI-24x-xx 6 A / 125 V VI-J4x-xx PC-Tron 5A
VI-2Nx-xx 8A / 125 V VI-JNx-xx PC-Tron 5A
VI-23x-xx 8 A /125 V VI-J3x-xx PC-Tron 5A
VI-22x-xx 8 A / 60 V VI-J2x-xx PC-Tron 5A
VI-2Wx-xx 12 A / 50 V VI-JWx-xx 8 A / 60 V
VI-21x-xx 12 A / 32 V VI-J1x-xx 8 A / 60 V
VI-2Vx-xx 12 A / 32 V VI-J0x-xx 8 A / 60 V
VI-20x-xx 12 A / 32 V
Acceptable Fuse Types and Current Rating for the VI-200 and VI-J00 Family of Converters
3. Module Do’s and Dont’s