V48B24C250BF2 Vicor Corporation, V48B24C250BF2 Datasheet - Page 7

• Manufacturer Part Number: V48B24C250BF2
• Manufacturer: Vicor Corporation

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The output voltage of the converter can be adjusted or
programmed via fixed resistors, potentiometers or voltage
DACs. See Figures 7 and 8.
1. This converter is not a constant power device – it has a
2. The trim down resistor must be connected to the –Sense pin.
Figure 7 — Output voltage trim down circuit.
constant current limit. Hence, available output power is
reduced by the same percentage that output voltage is
trimmed down. Do not exceed maximum rated output current.
Error
Amp
1kΩ
1.23V
0.033
μF
R
D
(ohms) =
+Out
–Out
+S
SC
–S
1,000 Vout
Vnom - Vout
Set your site on VICOR at vicorpower.com
Trim Down
R
D
Load
48V Mini Family
Figure 8 — Output voltage trim up circuit.
1. The converter is rated for a maximum delivered power. To
2. The trim up resistor must be connected to the +Sense pin.
3. Do not trim the converter above maximum trim range
On-line calculators for trim resistor values are available
on the vicor website at: vicorpower.com/tools.
Resistor values can be calculated for fixed trim up,
fixed trim down and for variable trim up or down.
In addition to trimming information, the web site and
the Applications Manual also include design tips,
applications circuits, EMC suggestions, thermal design
guidelines and PDF data sheets for all available Vicor
products.
ensure that maximum rated power is not exceeded, reduce
maximum output current by the same percentage increase in
output voltage.
(typically +10%) or the output over voltage protection
circuitry may be activated.
Error
Amp
1kΩ
1.23V
R
U
0.033
μF
(ohms) =
1,000 Vout-1.23 Vnom
+Out
–Out
1.23 Vout-Vnom
+S
SC
–S
Rev. 7.4
Trim Up
R
U
– 1,000
Page 7 of 11
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