Vicor VI Brick AC Front End Evaluation Board - Manual (Page 6)

The Power Behind Performance
Rev 1.4 12/2013 vicorpower.com Applications Engineering: 800 927.9474 Page 6
Input Current Measurement
A current probe can be passed around either input lead connected to the VI Brick® AC
Front End Evaluation Board. Note that an input capacitor on the evaluation board is
downstream of this measurement point.
Enable (EN) DANGER! HIGH VOLTAGE!
The EN pin can be used to disable the VI Brick AC Front End module. Connecting EN
to the IN-PFM pin will disable the module. This will also clear any latching output OVP
fault if one has occurred. Note that the EN pin is referenced to the primary (hazardous
voltage) side of the converter. Warning: The EN Pin, or the –IN PFM Pin must not be
connected to line or output of the VI Brick AC Front End.
Efficiency Measurement
As the VI Brick AC Front End module can deliver and consume large currents, the effect
of the PCB must be considered when making an efficiency measurement. Be certain to
accurately measure the voltage using test points TP08 (LINE1) , TP14 (LINE2/NEUTRAL),
TP18 (–OUT), and TP01 (+OUT). Using these test points will more closely represent the
efficiency of the VI Brick AC Front End module.
Hardware
The hardware kit provided with the evaluation board includes the following:
n (3) #10-32 screws n (6) #10-32 lock washer
(for +OUT, -OUT, and Earth terminals) (for +OUT, -OUT, and Earth terminals)
n (3) #10-32 hex nut n (1) 6800 uF hold-up capacitor
(for +OUT, -OUT, and Earth terminals) (can be applied between H03 and
H07, H12 and H10, or H14 and H10)
Ring lugs are also recommended for making output connections.
Thermals
For most lab environments a fan blowing across the evaluation board is recommended.
See VI Brick Thermal Management Application Note at:
www.vicorpower.com/documents/application_notes/AN200_VIBrickTherm.pdf
or contact Vicor Applications Engineering for assistance (800) 927-9474.
Ordering Information
The evaluation board is specified by replacing the “–00” suffix with “–CB” on the
VI Brick AC Front End model number.