14 th cbm collaboration meeting split 2009 status of front end electronics n-xyter pcb & power...
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![Page 1: 14 th CBM Collaboration Meeting Split 2009 Status of Front End Electronics N-XYTER PCB & Power Supply Volker Kleipa, GSI Darmstadt](https://reader034.vdocument.in/reader034/viewer/2022051115/56649de45503460f94adb9f0/html5/thumbnails/1.jpg)
14th CBM Collaboration Meeting Split 2009
Status of Front End Electronics
N-XYTER PCB &
Power Supply
Volker Kleipa,GSI Darmstadt
![Page 2: 14 th CBM Collaboration Meeting Split 2009 Status of Front End Electronics N-XYTER PCB & Power Supply Volker Kleipa, GSI Darmstadt](https://reader034.vdocument.in/reader034/viewer/2022051115/56649de45503460f94adb9f0/html5/thumbnails/2.jpg)
14th CBM Collaboration Meeting Split 2009
Topics
Investigations in DC power supplies
➲ DC/DC step down converter test➲ Alternative DC step down design
NYXTER FEB_D
➲ N-XYTER PCB Requirements for FEB_D➲ N-XYTER PCB Cooling Plate ➲ FEB_D N-XYTER Cooling➲ N-XYTER FEB_D PCB
Status
![Page 3: 14 th CBM Collaboration Meeting Split 2009 Status of Front End Electronics N-XYTER PCB & Power Supply Volker Kleipa, GSI Darmstadt](https://reader034.vdocument.in/reader034/viewer/2022051115/56649de45503460f94adb9f0/html5/thumbnails/3.jpg)
14th CBM Collaboration Meeting Split 2009
DC/DC step down converter test
First tests done with a supply supported by Floeth ElektronikSupply spec. was 15V to 3.3V, single phase step down DC/DC converter,equipped with an air coil switched at 150KHz, no additional filter.Environment was 1.5T generated with ALADIN magnet at GSILoad 0.5Ohm
Results:+ Supply is working at 1.5T +Efficency independent of magentic field- 70% efficency only- High noise generation independent from magentic filed
Our Requirements for switched DC/DC converters:• High effincency (low local heat generation) to replace linear regulators• Up to 2T magnetic fields means no ferrite shielded components• Low Noise distribution
![Page 4: 14 th CBM Collaboration Meeting Split 2009 Status of Front End Electronics N-XYTER PCB & Power Supply Volker Kleipa, GSI Darmstadt](https://reader034.vdocument.in/reader034/viewer/2022051115/56649de45503460f94adb9f0/html5/thumbnails/4.jpg)
14th CBM Collaboration Meeting Split 2009
Alternative DC step down design
• Multiphase design
• Further investigations will be the testing some Reference desings
• I.e. IR design IRDCiP2002-C, Converter 12V to 3.3V, >82% eff., 120A output with 12mVp-p ripple1MHz/phase• Coils with only 300nH will be replaced by air coils.
![Page 5: 14 th CBM Collaboration Meeting Split 2009 Status of Front End Electronics N-XYTER PCB & Power Supply Volker Kleipa, GSI Darmstadt](https://reader034.vdocument.in/reader034/viewer/2022051115/56649de45503460f94adb9f0/html5/thumbnails/5.jpg)
14th CBM Collaboration Meeting Split 2009
N-XYTER PCB requirements for FEB_D
• Raised bondpad pitch
• Separated LVDS and common mode signals
• NXYTER chip and PCB hardware with efficient and regulated cooling
• Additional diagnostic hardware
• Power control
![Page 6: 14 th CBM Collaboration Meeting Split 2009 Status of Front End Electronics N-XYTER PCB & Power Supply Volker Kleipa, GSI Darmstadt](https://reader034.vdocument.in/reader034/viewer/2022051115/56649de45503460f94adb9f0/html5/thumbnails/6.jpg)
14th CBM Collaboration Meeting Split 2009
N-XYTER PCB Cooling Plate
Cooling Block for FEB_B, FEB_C and FEB_D
Design and Picture by Carmen Simons
![Page 7: 14 th CBM Collaboration Meeting Split 2009 Status of Front End Electronics N-XYTER PCB & Power Supply Volker Kleipa, GSI Darmstadt](https://reader034.vdocument.in/reader034/viewer/2022051115/56649de45503460f94adb9f0/html5/thumbnails/7.jpg)
14th CBM Collaboration Meeting Split 2009
FEB_D N-XYTER Cooling
A copper plate will be fixed on the bottom PCB sideThe N-XYTER will be placed on this copper plate from top side
![Page 8: 14 th CBM Collaboration Meeting Split 2009 Status of Front End Electronics N-XYTER PCB & Power Supply Volker Kleipa, GSI Darmstadt](https://reader034.vdocument.in/reader034/viewer/2022051115/56649de45503460f94adb9f0/html5/thumbnails/8.jpg)
14th CBM Collaboration Meeting Split 2009
N-XYTER FEB_D PCB
Changed/added:
• Alternative connector forseparated LVDs and common mode signals• New bond pitch• Separated supply regulators • 0.3V LDOs used• PT100 sensor out• Testpoints• New power connector• I2C and SPI spike filter
I2C reads now:• Temperature • Current• Testchannels Slow, Fast
I2C RW:• Serial EEprom for data storage
![Page 9: 14 th CBM Collaboration Meeting Split 2009 Status of Front End Electronics N-XYTER PCB & Power Supply Volker Kleipa, GSI Darmstadt](https://reader034.vdocument.in/reader034/viewer/2022051115/56649de45503460f94adb9f0/html5/thumbnails/9.jpg)
14th CBM Collaboration Meeting Split 2009
Status
• Power supply tests will continue with new design
• FEB_D PCB is now ordered
• FEB_D assembly is open
• New cooling case design ready for FEB_B, FEB_C and FEB_D
![Page 10: 14 th CBM Collaboration Meeting Split 2009 Status of Front End Electronics N-XYTER PCB & Power Supply Volker Kleipa, GSI Darmstadt](https://reader034.vdocument.in/reader034/viewer/2022051115/56649de45503460f94adb9f0/html5/thumbnails/10.jpg)
14th CBM Collaboration Meeting Split 2009
Thanksfor your attention