Difference between revisions of "Vicor Power Assembly"

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{{Related|Power}}
 
{{Related|Power}}
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The MCE can be equipped with a 18–36Vin (24Vin nominal) switching supply designed for use in balloon-based experiments. This unit contains a set of [http://www.vicorpower.com/dc-dc-converters-board-mount Vicor DC-DC converters] that are trimmed to accomodate losses of up to 2m cable, so they can be located up to 2m away from the actual MCE crate.
+
The MCE can be equipped with a 24V DC-in or 48V DC-in switching supply designed for use in balloon-based experiments. This unit contains a set of [http://www.vicorpower.com/dc-dc-converters-board-mount Vicor DC-DC converters] that are trimmed to accommodate losses from cables of up to 2-metres, so they can be located up to 2-m away from the actual MCE [[subrack]].
 
== Specification==
 
== Specification==
  
 
;DC Input Type
 
;DC Input Type
−
: 18-36V
+
: 24V (18-36V) - Rev. C, Issues 1, 2, 5, 6
−
: 3A from 24V to power one 3-MDM MCE48 crate (6A for two)
+
: 48V (36-60V) - Rev. C, Issues 3, 4, 7
 +
: 3A at 24V to power one 3-MDM MCE48 crate (6A for two)
  
−
; DC output
+
;DC output
 
:    pVa: 6.1 to 6.3 V
 
:    pVa: 6.1 to 6.3 V
−
:   nVa: -6.1 to -6.3 V
+
:   nVa: -6.1 to -6.3 V
 
:    Vlvd: 4.4 to 4.7 V
 
:    Vlvd: 4.4 to 4.7 V
 
:    Vcore: 2.9 to 3.2 V
 
:    Vcore: 2.9 to 3.2 V
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: 24cm x 20cm x 5cm
 
: 24cm x 20cm x 5cm
 
; Weight:
 
; Weight:
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: < 2kg and a 1m power cable is ~1kg
+
: < 2kg and a 1-m power cable is ~1kg
  
 
=== Schematics ===
 
=== Schematics ===
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* Schematics for the Vicor Supplies: [http://www.phas.ubc.ca/~mce/mcedocs/hardware/schematics/PowerSupplyVicor/ELE_C585-401_RevC2_VicorPSU_Schematics.pdf (+24V input - Rev C2 [PDF])] [http://www.phas.ubc.ca/~mce/mcedocs/hardware/schematics/PowerSupplyVicor/ELE_C585-401_RevC3_VicorPSU_Schematics.pdf (Custom +48V input-Rev C3 [PDF])]
+
* Schematics for the Vicor Supplies: [http://www.phas.ubc.ca/~mce/mcedocs/hardware/schematics/PowerSupplyVicor/ELE_C585-401_RevC2_VicorPSU_Schematics.pdf (+24V input - Rev C2 [PDF])] [http://www.phas.ubc.ca/~mce/mcedocs/hardware/schematics/PowerSupplyVicor/ELE_C585-401_RevC3_VicorPSU_Schematics.pdf (+48V input-Rev C3 [PDF])]
 
* The schematics for the Wiring harness in the box and the pinout for the Winchester connector: [http://www.phas.ubc.ca/~mce/mcedocs/hardware/schematics/PowerSupplyVicor/ELE-C584-402_RevA_Wiring_Harness.pdf pdf]
 
* The schematics for the Wiring harness in the box and the pinout for the Winchester connector: [http://www.phas.ubc.ca/~mce/mcedocs/hardware/schematics/PowerSupplyVicor/ELE-C584-402_RevA_Wiring_Harness.pdf pdf]
  

Revision as of 18:18, 7 March 2018

The MCE can be equipped with a 24V DC-in or 48V DC-in switching supply designed for use in balloon-based experiments. This unit contains a set of Vicor DC-DC converters that are trimmed to accommodate losses from cables of up to 2-metres, so they can be located up to 2-m away from the actual MCE subrack.

Specification

DC Input Type
24V (18-36V) - Rev. C, Issues 1, 2, 5, 6
48V (36-60V) - Rev. C, Issues 3, 4, 7
3A at 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 1-m power cable is ~1kg

Schematics

Check the schematics for Input/Output connector pinout.

Output Connector
Winchester MRA34SG
Input Connector
Amphenol PTC-2A-14-5P

Mechanical Drawings

Mechanical Drawings for Vicor Aluminum Box RevC

Notes

  1. The Vicor supply is equipped with two Winchester connectors 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, with separate cables, oddly enough, the noise performance was degraded.
  2. We have not used the Vicor supply to power a 5-MDM MCE72 yet. The power requirements for a 5-MDM MCE are disctributed slightly differently than twice an MCE48 mainly due to LN_BIAS circutries.

Cooling

For Spider, the mounting/heat extraction block is bolted to a heat exchanger through which the 4He blow-off from the cryostat's vapour-cooled shield is vented.

Photos

  • Vicor supply attached to a subrack

  • Vicor supply top face with heat pipes

  • Vicor supply attached to a subrack

  • 3 vicor supplies in Spider mounting bracket, connector side

  • 3 vicor supplies in Spider mounting bracket, mounting/cooling side

Testing

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