B384F120T30-EB Vicor Corporation, B384F120T30-EB Datasheet - Page 2

• Manufacturer Part Number: B384F120T30-EB
• Description: Specifications: Board Type: Fully Populated ; Main Purpose: DC/DC, Step Down ; Regulator Topology: Buck ; Outputs and Type: 1, Isolated ; Voltage - Output: 12V ; Current - Output: 25A ; Voltage - Input: 360 ~ 400V ; Frequency - Switching: 3.4MHz ; Po
• Manufacturer: Vicor Corporation

User Guide UG:001
Evaluation Board schematic
BCM Customer
Figure 2
vicorpower.com
Set Up
The Customer Evaluation Board should be set up as follows:
Note: Care should be taken to avoid reversing polarities if connecting to the opposite (solder) side of
the board.
+ IN, – IN
Connect a high-quality, low-noise power supply to the +IN and –IN terminals of the Customer
Evaluation Board. The interconnect leads should be heavy gauge and as short as possible.
Additional capacitance may have to be added on the evaluation board to make up for impedances
in the interconnect leads as well as deficiencies in the source. It is important to remember that
noise from the source, as well as any input source voltage drops, will appear at the output of the
BCM multiplied by its K factor. Test points 4 (–IN) and 5 (+IN) can be used to monitor the input
and are located on the PCB adjacent to the input terminals.
+ OUT , –OUT
An electronic or passive load should be connected to +OUT and –OUT terminals of the Customer
Evaluation Board with short heavy-gauge leads. Most commercially available electronic loads do
not have current slew rates capable of fully exercising the BCM. The Customer Evaluation Board can
be connected directly to the application for which the BCM is intended. However, the interconnect
impedances between the Customer Evaluation Board and the application can greatly affect the
transient response. For applications where transient response is critical, the user should consider
mounting the BCM directly to the target application PCB. Test points 6 (–OUT) and 7 (+OUT) can
be used to monitor the output and are located on the PCB adjacent to the output terminals.
Output Voltage Measurement Jack (J1)
This connector is provided to make accurate measurements of the output voltage of the BCM.
Many types of scope probes may be directly connected to this point if the probe is equipped with
a removable plastic sheath. To avoid creating ground loops when making measurements of the
output or input voltage, these measurements should be made separately.
+IN
–IN
TM
RSV
PC
100 μF
C1
63V
800-735-6200
TP5
TP2
TP4
TP1
Rev. 1.0
TM
RSV
PC
+In
-In
BCM
+Out
+Out
-Out
-Out
TP7
TP6
12/ 2006
J1
–OUT
+OUT
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