Vicor Power Assembly

Template:Hierarchy header The MCE can alternatively be equipped with a 18–36Vin (24Vin nominal) switching supply designed for use in balloon-based experiments. The Vicor supplies are trimmed to accomodate losses of up to 2m cable, so they can be located up to 2m away from the actual MCE crate.

Schematics

• Schematics for the Vicor Supplies can be found here
• The schematics for the Wiring harness in the box and the pinout for the Winchester connector: pdf

Check the schematics for Input/Output connector pinout.

Output Connector

Winchester MRA34SG

Input Connector

Amphenol PTC-2A-14-5P

Specification

DC Input Type

18-36V

3A from 24V to power one 3-MDM MCE48 crate (6A for two)

DC output

pVa: 6.1 to 6.3 V

nVa: -6.1 to -6.3 V

Vlvd: 4.4 to 4.7 V

Vcore: 2.9 to 3.2 V

Watts

100W

Regulated

Yes

Efficiency

75%

Dimensions (L x W x H)

24cm x 20cm x 5cm

Weight

< 2kg and a 1m power cable is ~1kg

Notes

The Vicor supply is equipped with two Winchester connector to power two MCE48 crates. So far, we are able to use a Y cable and power two MCE48 from one connector. When we tried to use each connector separately, for some odd reason, we experienced higher noise performance.

Testing

• Testing VPA

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