PRD48AF480T400A00 Datasheet, PDF (2/9 Pages) Vicor Corporation – PRM-AL Customer Evaluation Boards

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:
Figure 1.
PRM-AL mounted
to PRM-CB board
Board Overview
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.
UG:003
vicorpower.com
Applications Engineering: 800 927.9474
Page 2