1. LINK BOARD PROJECT UPGRADE
Pigi Paolucci and Napoli group

2. Outline LB CAD project LVDS suppressor studies LV regulator studies
Open questions
To be done
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

3. LV Regulator LHC4913 Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

4. LB project schema
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

5. Test schema LHC4913 Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

6. Temperature Tests
Vin = 5V Vout = 3.3V Iout = 1.4A (Load=2.3W//2200uF); Ta = 27°C; Td = 91°C
1 volt
1 msec
Vin
Vout
2 msec
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

7. Rumping up and down Vin Vout Vin Vout Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

8. Temperature Tests
Vin=5V; Vout=3.3V Iout=2.6A (Load=1.2W//2200uF); Ta=27°C; Td=135°C
1 volt
1 msec
Vin
Vout
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

9. Rumping up and down Vin Vout Vin Vout Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

10. Different Loads
Vin=5V; Vout=3.3V Iout1=1.4A (Load=2.3W//2200uF) Iout2=2.6A (Load=1.2W//2200uF)
Vin
Vout
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

11. How does react to input spikes
Vin=5V; Vout=3.3V Iout1=1.4A (Load=2.3W//2200uF) Spike=5V / Vin=10V  Spike su Vout > 10mV
Vin
Vout
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

12. Heat Dissipation
Tmax (junction) = 125°C; Rcase (junction) = 2°C/W (datasheet) Working case Vin = 5V; Vout = 3.3V; Iout = 1.5A Power to dissipate = (5V - 3.3V) * 1.5A = 2.55W; Tamb=25°C Rtot = DT/W = (125°C – 25°C)/2.55W = 39°C/W Rheatsink = Rtot-Rjc = 37°C/W Worst case Vin=6V; Vout=3V; Iout=3A Power to dissipate= (6V – 3V) * 3A = 9W; Tamb = 40°C Rtot = DT/W = (100°C - 40°C)/9W = 6.6°C/W Rheatsink = Rtot-Rjc = 4.6°C/W
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

13. Max temperature behaviour
Test Conditions Vin=6V; Vout=3.3V; Iout=2.6A; Tamb=25°C Temperature on the case: 155°C -:- 135°C
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

14. Regulator Infrared scan
Standard condition
Worst case – before shutdown
Worst case – after shutdown
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

15. Costs needed spare PCB + mount + test components cost Total Crates 12
€100,0
€1.400,0
ControlBoard 24 4
€430,0
€362,0
€792,0
€22.176,0
Link Board Master 48 5
€200,0
€450,0
€650,0
€34.450,0
Link Board Slave 96 10
€400,0
€600,0
€63.600,0
BackPlane
€337,0
€395,0
€732,0
€10.248,0
Frontplane
€99,0
€75,0
€174,0
€4.872,0
Mod APA450
€146,0
€385,0
€531,0
€14.868,0
Mech.
€37,5
€30,0
€67,5
€1.890,0
€ ,0
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

16. Time schedule Installation and commissioning in the 2013 2011 2012 J F
LB prototype
LB test
CB prototype
CB test
Lbox
production
Test 904
Installation and commissioning in the 2013
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

17. Manpower and tasks
Napoli is interested in the design of the “up-to-date” system
P. Paolucci, S. Buontempo, N. Cavallo (sabbatical year in the 2011)
Electronic Service: 6-7 months in the 2010 and 2011
Napoli is now (2010) designing the “up-to-date” LB system including: LVDS suppressor, LV regulators.
First design almost ready (80%). Cost estimation ready
LNF is looking at the test and commissioning of the system
L.Benussi, L.Passamonti (Tech.), D.Pierluigi (Tech.) and Electronic Service: 3-4 months in 2011
Warsaw is in charge for the test, commissioning and installation of the system
Warsaw is the only group having the full expertise of the link board hardware and firmware system
The participation of new groups at the LB project has been strongly recommended by the CMS management
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

18. Manpower needed ?
Prototypes test at CERN: 1 tech + 1 phys for 3 months (2011) + Warsaw
Test at CERN (blg 904): 1 tech + 1 phys for 6 months (2012) + Warsaw
Installation: 2 tech + 1 phys for 6 months (2013) + Warsaw
Commissioning: 1 phys for 3-4 months (2013) + Warsaw
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

19. To be done
Document about the project, schedule, manpower and responsibilities:
Napoli, LNF and Warsaw ?:
Napoli and LNF: production
Warsaw, Napoli and LNF: prototype test at 904
Warsaw, LNF and Napoli: Production test and commissioning
New design: regulators + heat sink + what else ?
LV board: new firmware + what else ?
What about the spares ?
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010

20. Conclusion
Preliminary conclusions of the Electronic Service in Napoli:
The present project is very good, complex and sophisticated; congratulation to our Warsaw/Finland colleagues
Two “rad-hard” LV regulators per boards (LB/CB) are suggested – heat dissipation to be studied very carefully
Not clear if we really need a set of LVDS protections
Spartan III configuration could be double checked
New LB boxes and boards can be produced in Italy but only Warsaw experts can test and commissioning the full system – Napoli and LNF will be part of the business but not the main actors
INFN will discuss and decide about the project in Jan 2011
Pigi Paolucci
Link Board Upgrade Meeting - Dec 2010