F3
8A
270 V MOV
P/N 03040
V375 DC-DC Converters
F1
PC-Tron
3A
C5
L1
GND
L2/N
LINE
L1
Vicor
Line Filter
P/N 07818
6.3 A
L2/N
LOAD
L1
GATE IN
GATE OUT
L2/N
VI-HAM
+ OUT
P/OK
E/O
A/S
– OUT
R1
R2
C1
D1
D2
C2
+IN
PC
PR
D4
-IN
C6
Y-Capacitor
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
8A
Vicor
Part Number
01328
00192
Available as a HUB
from Vicor (see
adjoining table)
C4
R4*
C3
F2
PC-Tron
3A
R3
D3
D5
VI-26X or VI-J6X
DC-DC Converters
C7
+IN
GATE IN
GATE OUT
-IN
R1
R2, R3
R4*
D1
D2, D3
D4, D5
V1
C5–C8
F1, F2
F3
00670
26108
03040
01000
02178
Hold-up Box (HUB)
available as accessory product
through Vicor Express
C8
Y-Capacitor
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 4
— Connection diagram HAM / DC-DC converters
Pin Function / Description
• L1 and L2/N (HAM)
The HAM requires Vicor’s P/N 07818 line filter or equivalent.**
Connect single phase AC mains to the input of the line filter via
a standard 8 A, 250 V fuse. Connect the output of the filter to L1
and L2/N of the HAM. Do not put an X capacitor across the
input of the HAM or use a line filter with an X capacitor on its
output as power factor correction may be impacted.
• +IN, –IN (HAMD, BAMD):
These pins are connected to the output of the external bridge
rectifier in HAMD / BAMD configurations (Figure 5).
• GATE IN (HAM):
The user should not make any connection to this pin. This pin
disables the boost converter only. Rectified line current may still
be present on the output. This pin does not provide the same
function as the Gate Input pin of VI-200 / VI-J00 modules.
• GATE IN (HAMD):
This pin provides line voltage envelope and phase information
for power factor correction. This connection must be made
through the synchronization diodes between the line filter and
bridge rectifier (Figure 5).
• GATE IN (BAMD):
The Gate In pin is an interface pin to the Gate Out pin of a
HAMD or BAMD depending on configuration. The user should
not make any other connection to this pin.
• GATE OUT:
The Gate Out pin is an interface pin to BAMDs; the user should
not make any other connection to this pin.
• +OUT and -OUT
Connect the +OUT of the HAM to the +IN of the respective
Vicor DC-DC converters via a 3 A PC Tron DC fuse. Connect the
-OUT of the HAM to the -IN of the converters. In addition, an
external hold-up capacitor of 1,000 µF with a minimum voltage
rating of 450 Vdc, is required (across the output of the HAM) for
16 ms ride through time at 600 W (500 µF for 300 W, etc). This
capacitor must be in close proximity to the HAM. Do not exceed
3,000 µF of total output capacitance. Lower values of capacitance
may be used for reduced hold-up requirements, but not less than
470 µF. Lower capacitance values may degrade power factor
specifications.
• E/O
The Enable Output (E/O) is used to inhibit the DC-DC converters
at start up until the hold-up capacitors are charged, at which time
Enable is asserted high (open state, Figure 8). If the AC line fails,
E/O goes low when the DC output of the HAM drops below
250 Vdc.
**
Contact the Vicor technical support center at
800-927-9474
for filter substitutes.
Vicor Corp.
Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
HAM, Harmonic Attenuation Module
Rev. 1.5
Page 5 of 8
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