V375 DC-DC Converters
F1
PC-Tron
3A
C5
+IN
GATE IN
F3
15 A
+OUT
HAMD
P/OK
E/O
A/S
-OUT
R1
C1
D1
R2 D2
+IN
PC
C2
D4
Input
L1
L1
1N4006
Bridge
Rectifier
~
GATE OUT
-IN
PR
-IN
C6
C7
+
270 V MOV
P/N 03040
GND
L2/N
Line Filter
12.6 A**
1N4006
Y-Capacitor
L2/N
~
–
F2
PC-Tron
3A
410 V Transorb
1.5 KE 130CA
1.5 KE 130CA
1.5 KE 150CA
+IN
GATE IN
BAMD
GATE OUT
-IN
+OUT
R3 D3
C4
D5
R4*
C3
+IN
PC
PR
-IN
C8
Component
Designation
C1,
C2, C3
C4
Description
0.1
µF
ceramic
0.01
µF
ceramic
Hold-up capacitor,
1,000 to 3,000
µF
50 K ohm
250 ohm, 0.25 W
100 K ohm, 2 W
1N4691
1N4006
1N5817
270 V MOV
4,700 pF Y2 cap.
3 A PC Tron
15 A
Vicor
Part Number
01328
00192
Available as a HUB
from Vicor (see
adjoining table)
-OUT
Y-Capacitor
R1
R2, R3
R4*
D1
D2, D3
D4, D5
V1
C5–C8
F1, F2
F3
00670
26108
03040
06852
02178
Hold-up Box (HUB)
available as accessory product
through Vicor Express
540
µF
940
µF
1,640
µF
2,000
µF
HUB270-P
HUB470-P
HUB820-P
HUB1000-P
150 W max
300 W
450 W
675 W
* A 100 K, 2 Watt resistor is used for every
1,000 µF of hold-up capacitance.
Figure 5
— Connection Diagram, HAMD / BAMD / V375 DC-DC Converters
HAMD-CL Driver HAM: No internal bridge rectifier or synchronization diodes.
BAMD-CL Booster HAM: Companion module to HAMD-CM used for additional output power. No internal bridge rectifier.
Pin Function Description (cont.)
E/O must be connected to the Gate Input of all VI-26x and
VI-J6x drivers and / or the PC pin of the V375 DC-DC converters;
failure to do so may cause the converters to toggle on and off.
(Figure 4) If an external load is connected directly to the output of
the HAM, do not apply the load until the output hold-up
capacitor(s) are fully charged.
+
In applications using VI-26x drivers and VI-J6x boosters, the E/O
pin should be connected to the Gate In pin of the driver module
only, it is not necessary to connect this pin to boosters as they are
controlled by their respective driver.
The E/O pin ancillary circuitry illustrated in Figures 4 and 5
provides transient immunity. The aforementioned connections
are the minimum required. In addition, there are other features
available.
• A/S
The HAM provides a low voltage output Auxiliary Supply (A/S)
that may be used to power primary side control and monitoring
circuitry. This output is 19-23 Vdc, referenced to -OUT, at 3 mA
max. Do not overload or short this output as the HAM will fail. A
typical use for A/S is to power an optical coupler that isolates the
Power OK signal (Figure 6).
** Consult Vicor's technical support center at
800-927-9474
for specific HAMD / BAMD filtering information.
19 - 23 V
–
A/S
≤
3 mA
-OUT
"Power OK" Status
Low = OK
+ OUT
P/OK
E/O
A/S
– OUT
18 kΩ, 1/4 W
Figure 6
— Auxiliary Supply (A/S)
Vicor Corp.
Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
HAM, Harmonic Attenuation Module
Rev. 1.5
Page 6 of 8
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VICOR [ VICOR CORPORATION ]
