SPECIFICATIONS
OUTPUT CHARACTERISTICS
(typical at T BP = 25°C, nominal line and 75% load, unless otherwise specified)
Clamp voltage
Parameter Min Typ Max
Units
Test Conditions/Notes
24 Vdc input
48 Vdc input
300 Vdc input
36.0
40.5
62.0
80.0
400
44.0
50.0
71
90.0
435
Vdc
Vdc
Vdc
Vdc
Vdc
–A11– models
–AWW– models
–A33– models
–ANN– models
–A66– models
Output power
24 V models
48 V models
300 V models
250
510
510
Watts
Watts
Watts
Output of IAM
Output of IAM
Output of IAM
Internal voltage drop
24 Vdc
48 Vdc
300 Vdc
0.6
0.6
1.7
0.85
0.95
3.5
Vdc
Vdc
Vdc
Overload protection
24 Vdc input
48 Vdc input
–AWW–
–A11–
–ANN–
–A33–
20
15
20
15
Amps
Amps
Amps
Amps
Foldback threshold; auto recovery
with latched shut down after 2 ms
ISOLATION CHARACTERISTICS
THERMAL?CHARACTERISTICS
MECHANICAL SPECIFICATIONS
300 Vdc input –A66– 4
Input to base
Parameter Min
Output to base
Parameter Min
Efficiency
Baseplate to sink
Operating temperature,
baseplate
Storage temperature
Parameter Min
Typ
1,500
1,500
Typ
97
0.14
Typ
Max
Max
100
125
Max
Amps
Vrms
Units
Vrms
Units
%
°C/Watt
°C
°C
Units
1 Test minute
Conditions
1 minute
Test Conditions
See product grade specifications
See product grade specifications
Test Conditions
PRODUCT GRADE SPECIFICATIONS
Weight 3.0 (85)
Storage E
Parameter Temp. (Baseplate) –20°C to +105°C
C
–40°C to +105°C
ounces (grams)
I
–55°C to +105°C
M
–65°C to +105°C
EMI CHARACTERISTICS
Operating Temp. (Baseplate)
–10°C to +100°C
–25°C to +100°C
–40°C to +100°C
–55°C to +100°C
EMI/ RFI (conducted emissions)
TRANSIENT?PROTECTION
Meets Bellcore TR-TSY-000513, Issue 2, Rev. 1 (24 and 48V Input);
British Telecom BTR 2511, Issue 2 (24 and 48V Input);
FCC Part 15, Class A, EN55022 Class B
Meets Bellcore TA-TSY-001003, Issue 1, 9/89
British Telecom BTR 2511, IEC61000-4-5 Level 2 (VI-A66 only)
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
VI-IAM Input Attenuator Modules
Rev. 1.2
Page 2 of 5
Set your site on VICOR at www.vicorpower.com
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