V048F080T030-CB Datasheet, PDF (2/9 Pages) Vicor Corporation – PRM® and VTM® Customer Evaluation Boards

Figure 1
PRM-AL mounted
to PRM-CB board
Please take a closer look at the PRM-CB board.
Figure 1 is a picture of a PRM-AL mounted to the PRM-CB board.
The board has several features that enable the user to fully explore the capabilities of the PRM-AL:
2
4
3
5
6
1
7
8
9
Board Overview (reference the designators in the image above)
1 Source voltage input points are designed to accommodate #10 hardware and Panduit ring lugs.
BE CERTAIN THAT THE POLARITY IS CORRECT BEFORE APPLYING POWER.
2 Auxiliary control (H01) - access points for PR, IL, TM, PC, and VH, (header shown installed).
3 Reference test point Signal Ground (SG).
4 Adjustment potentiometers for indicated function are used in conjunction with actuation of
corresponding switch in Item 5.
5 PRM port connections (switch bank and silk screen reference).
a. Toggling the switch indicated PC to the ON position inhibits the PRM output.
b. Toggling the switch indicated IL to the ON position enables an adjustable current limit effected
by varying the corresponding IL trim pot (Item 4).
c. Toggling the switch indicated SC to the ON position enables adjustment of the output voltage
down from the set point determined by the OS resistor by varying the corresponding SC trim
pot (Item 4). - CAUTION: depending upon the initial output voltage set point determined by
the OS resistor it is possible to trim the SC so low that the output shuts off. The minimum
output voltage per the data sheet is 26 Vdc.
d. Toggling the switch indicated CD to the ON position places the PRM in Adaptive Loop
regulation mode (for use with the VTM-CB) from the Local Loop regulation mode. (In Local
Loop mode the set voltage is regulated at the output terminals of the PRM.) Adjusting the
corresponding CD trim pot (Item 4) changes the gain of the loop to compensate for different
OS settings and/or interconnect resistive losses.
e. Toggling the switch indicated OSV (OS Variable) to the ON position requires the switch
indicated OSF (OS Fixed) be placed in the OFF position and allows the PRM output set point to
be varied within the range specified on the data sheet.
f. Toggling the switch indicated OSF to the ON position sets the output of the PRM to the
nominal value indicated on the data sheet. If this switch is in the OFF position and the OSV
switch is also OFF, the unit will not function.
g. IT IS BEST TO SET THE SWITCH POSITION AND CORRESPONDING TRIM POT SETTINGS
BEFORE APPLYING POWER TO THE BOARD.
UG:003
vicorpower.com
Applications Engineering: 800 927.9474
Page 2