Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715

375V Maxi Family

Rev. 8.6

Page 2 of 15

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Parameter

Min

Typ

Max

Unit

Notes

Operating input voltage

250

375

425

Vdc

Input surge withstand

500

Vdc

<100 ms

Undervoltage turn-on

242.5

247.5

Vdc

Undervoltage turn-off

204.7

212.2

Vdc

Overvoltage turn-off/on

429.2

446.3

467.5

Vdc

Disabled input current

1.1

mA

PC pin low

Parameter

Min

Typ

Max

Unit

Notes

Output voltage setpoint

1

% Vout nom

Nominal input; full load; 25°C

Line regulation

±0.02

±0.2

%

Low line to high line; full load

Temperature regulation

±0.002

±0.005

% / °C

Over operating temperature range

Power sharing accuracy

± 2

± 5

%

10 to 100% of full load

Programming range

10

110

%

Of nominal output voltage. For trimming below 90%

of nominal, a minimum load of 10% of maximum

rated power may be required.

+Out to –Out, +Sense to –Out — Absolute Maximum Ratings

2 V

-0.5 to 3.1

Vdc

Externally applied

3.3 V

-0.5 to 4.7

Vdc

Externally applied

5 V

-0.5 to 7.0

Vdc

Externally applied

8 V

-0.5 to 10.9

Vdc

Externally applied

12 V

-0.5 to 16.1

Vdc

Externally applied

15 V

-0.5 to 20.0

Vdc

Externally applied

24 V

-0.5 to 31.7

Vdc

Externally applied

28 V

-0.5 to 36.9

Vdc

Externally applied

32 V

-0.5 to 41.9

Vdc

Externally applied

36 V

-0.5 to 47.1

Vdc

Externally applied

48 V

-0.5 to 62.9

Vdc

Externally applied

54 V

-0.5 to 70.2

Vdc

Externally applied

MODULE INPUT SPECIFICATIONS

MODULE OUTPUT SPECIFICATIONS

MODULE FAMILY ELECTRICAL CHARACTERISTICS

Electrical characteristics apply over the full operating range of input voltage, output load (resistive) and baseplate temperature,

unless otherwise specified. All temperatures refer to the operating temperature at the center of the baseplate.

Note: For important information relative to applications where the converter modules are subject to continuous dynamic loading,

contact Vicor applications engineering at 800-927-9474.

Parameter

Min

Typ

Max

Unit

Baseplate to sink; flat, greased surface

0.08

°C/Watt

Baseplate to sink; thermal pad (P/N 20265)

0.07

°C/Watt

Baseplate to ambient

4.9

°C/Watt

Baseplate to ambient; 1000 LFM

1.1

°C/Watt

Thermal capacity

165

Watt-sec/°C

THERMAL RESISTANCE AND CAPACITY