VI-HAM-ML Vicor Corporation, VI-HAM-ML Datasheet - Page 6

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VI-HAM-ML

Manufacturer Part Number
VI-HAM-ML
Description
Manufacturer
Vicor Corporation
Datasheet
Figure 5
PIN FUNCTION / DESCRIPTION (CONT.)
A/S
The HAM provides a low voltage non isolated 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).
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.
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
(Figure 4); failure to do so may cause the converters to toggle
on and off. 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-26x 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 illustrated circuitry is the
minimum required, see Figures 4 and 5.
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
Input
Component
Designation
C1
C2, C3
C4
C5–C8
C9,C10
D1
D2, D3
D4, D5
F1, F2
F3
R1
R2, R3
R4**
V1
Z1, Z2
Z3
V1
F3
Description
0.1 μF ceramic, 50 V
0.01 μF ceramic, 50 V
Hold up capacitor,
1000 to 6000 μF
4,700 pF Y2 cap.
0.2 μF, 500 V
1N4691
1N4006
1N5817
Use recommended fusing for specific
DC-DC Converters
20 A, 250 V
50 KΩ
250 Ω, 0.25 W
100 KΩ, 2 W
240 V MOV
130 V Transorb
150 V Transorb
GND
L1
L2/N
diode, 800 V
schottky diode, 20 V
zener, 6.2 V
P/N 1319-13
JMK Filter
12.6 A
*
Set your site on VICOR at vicorpower.com
Available as a HUB
L2/N
Film or Ceramic
adjoining table)
L1
from Vicor (see
Part Number
1.5KE130CA
1.5KE150CA
Vicor
00670
01000
30076
1N4006
1N4006
Bridge
Rectifier
Vicor P/N 30660
2000 μF HUB1000-P 1350 W
Hold up Box (HUB)
Z1
Z2
Z3
HAM, High-Boost Harmonic Attenuation Module
10 A
10 A
Figure 6
GATE IN
GATE OUT
-IN
GATE IN
GATE OUT
-IN
+IN
+IN
* Consult Vicor's Applications Engineering for specific
** A 100 KΩ, 2 W resistor is used for every 1,000 μF
HAMD / BAMD filtering information.
of hold up capacitance.
VI-HAMD-xL
VI-BAMD-xL
19 – 23 V
+OUT
P/OK
-OUT
+OUT
-OUT
E/O
A/S
+
R1
+OUT
–OUT
P/OK
+OUT
–OUT
P/OK
E/O
A/S
E/O
A/S
D1
C4
R3
R2
C1
R4
I AS ≤ 3 mA
**
C2
D3
D2
F1
F2
C3
DO NOT OVERLOAD
or directly connect a capacitor
to the A/S terminal.
Rev. 2.3
18 kΩ, 1/4 W
D5
C10
D4
C9
"Power OK" Status
V375 DC-DC Converters
Low = OK
PC
+IN
PC
PR
+IN
PR
-IN
-IN
C6
C7
C8
C5
Page 6 of 10

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