Difference between revisions of "Vicor Power Assembly"

From MCEWiki
 
(33 intermediate revisions by 2 users not shown)
Line 1: Line 1:
−
#REDIRECT[[MCE Power Requirements#Vicor Switching Supplies (24V-in)]]
+
{{Related|Power}}
 +
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==
 +
 
 +
;DC input
 +
: Either:
 +
:* 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
 +
:    V<sub>a</sub><sup>+</sup>: 6.1 to 6.3 V
 +
:    V<sub>a</sub><sup>&minus;</sup>: -6.1 to -6.3 V
 +
:    V<sub>lvd</sub>: 4.4 to 4.7 V
 +
:    V<sub>core</sub>: 2.9 to 3.2 V
 +
* ''Note:'' The VPA does not provide the obsolete V<sub>ah</sub> used by rev.A and B [[Readout card]]s and rev.A through D [[Bias card]]s
 +
 
 +
; Power: 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
 +
 
 +
== Connectors ==
 +
; Input:
 +
* '''Writing harness''': [http://www.phas.ubc.ca/~scuba2/sc2mce/system/power_supply_of_all_kinds/psu_Vicor/design/protel/vpa-c585-401d/ELE-S585-401C3_Schematics.PDF PDF]
 +
* '''Connector''': Amphenol PTC-2A-14-5P
 +
[[File:24-48Vin.png|400px]]
 +
; Output:
 +
* '''Wiring harness''': [http://www.phas.ubc.ca/~mce/mcedocs/hardware/schematics/PowerSupplyVicor/ELE-C584-402_RevA_Wiring_Harness.pdf PDF]
 +
* '''Connector''': Winchester MRA34SG.  '''[[MCE Power#Connector & pinout|Pinout]]'''
 +
* ''Note:'' The VPA can power one 72-HP subrack, or two 48-HP subracks.  Early revisions of the VPA had two output connectors.  Currently, all VPAs have only one Winchester connector for power output, and a wye cable is used when powering pairs of 48-HP subracks.
 +
== Schematics ==
 +
* Vicor Power Supply Rev C2, PCB Schematics [https://phas.ubc.ca/~mce/mcedocs/hardware/schematics/PowerSupplyVicor/ELE_C585-401_RevC2_VicorPSU_Schematics.pdf]
 +
* Vicor Power Supply Rev C3, PCB Schematics [https://phas.ubc.ca/~mce/mcedocs/hardware/schematics/PowerSupplyVicor/ELE_C585-401_RevC3_VicorPSU_Schematics.pdf]
 +
* Wiring [https://phas.ubc.ca/~mce/mcedocs/hardware/schematics/PowerSupplyVicor/ELE-C584-402_RevA_Wiring_Harness.pdf]
 +
== Mechanical Drawings ==
 +
* Assembled Box: [http://www.phas.ubc.ca/~scuba2/sc2mce/system/power_supply_of_all_kinds/psu_Vicor/design/mech/Aluminum_Box/MEC-C585-416D_Enclosure.PDF MEC-C585-416D]
 +
* Box Lid: [http://www.phas.ubc.ca/~scuba2/sc2mce/system/power_supply_of_all_kinds/psu_Vicor/design/mech/Aluminum_Box/MEC-C585-405D_Enclosure_Lid.PDF MEC-C585-405D]
 +
* Unfolded Box: [http://www.phas.ubc.ca/~scuba2/sc2mce/system/power_supply_of_all_kinds/psu_Vicor/design/mech/Aluminum_Box/MEC-C585-404D_Enclosure_Box_Unfolded.PDF MEC-C585-404D]
 +
* Mounting Flange: [http://www.phas.ubc.ca/~scuba2/sc2mce/system/power_supply_of_all_kinds/psu_Vicor/design/mech/Aluminum_Box/MEC-C585-406B_Enclosure_Flange.PDF MEC-C585-406B]
 +
 
 +
== Cooling ==
 +
For Spider, the mounting/heat extraction block is bolted to a heat exchanger through which the <sup>4</sup>He blow-off from the cryostat's vapour-cooled shield is vented.
 +
 
 +
== Photos ==
 +
<gallery>
 +
File:Vicor supply 1.jpg|Vicor supply attached to a subrack
 +
File:Vicor supply 2.jpg|Vicor supply top face with heat pipes
 +
File:Vicor supply 3.jpg|Vicor supply attached to a subrack
 +
File:Vicor in spider flingle 1.jpg|3 vicor supplies in Spider mounting bracket, connector side
 +
File:Vicor in spider flingle 2.jpg|3 vicor supplies in Spider mounting bracket, mounting/cooling side
 +
</gallery>
 +
 
 +
== Testing ==
 +
* [[Testing VPA]]
 +
 
 +
== ==
 +
* back to [[MCE_Power]]
 +
 
 +
[[Category:Accessories]]
 +
[[Category:Power]]

Latest revision as of 11:12, 22 October 2020

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
Either:
  • 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
Va+: 6.1 to 6.3 V
Va−: -6.1 to -6.3 V
Vlvd: 4.4 to 4.7 V
Vcore: 2.9 to 3.2 V
Power
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

Connectors

Input
  • Writing harness: PDF
  • Connector: Amphenol PTC-2A-14-5P

24-48Vin.png

Output
  • Wiring harness: PDF
  • Connector: Winchester MRA34SG. Pinout
  • Note: The VPA can power one 72-HP subrack, or two 48-HP subracks. Early revisions of the VPA had two output connectors. Currently, all VPAs have only one Winchester connector for power output, and a wye cable is used when powering pairs of 48-HP subracks.

Schematics

  • Vicor Power Supply Rev C2, PCB Schematics [1]
  • Vicor Power Supply Rev C3, PCB Schematics [2]
  • Wiring [3]

Mechanical Drawings

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

Retrieved from "https://e-mode.phas.ubc.ca/mcewiki/index.php?title=Vicor_Power_Assembly&oldid=7120"