Low Voltage Power Supply Project

AUXiliary Control Board (AUX Board)

The AUX board is a VME based 6U sized PCB board to generate all auxiliary signals and power voltages for one cluster of 4 fLVPS. The board consist of 4 x 3 isolated power supplies for ELMB motherboard, ELMB board itself and the StartUp voltage for LV bricks, current sources for remote on/off HV/DIG side electronics of the calorimeter and interlock circuitry. In total 64 AUX Control Boards are installed in the ATLAS USA15 control room in order to supervise 256 finger LVBOXes.

   Power consumption measured:
  Standby mode:  Iin_min= 290mA     (P=  23W, S = 66 VA,  Q = 62 VAR)
  Full 4ch run:    Iin_max=630mA      (P=119W, S =145 VA, Q = 83 VAR)
  
  Counting 64 AUX boards, they will consume in full power mode:
    P = 7620W    S = 9300 VA
 
   Power Factor PF= cos(Fi) = P / S = 0.34 - 0.82   (<0.95!!)
   we need to correct the PF by a parallel connected power line
   capacitors ~min 5uF/AUXboard or by  PF correctors
 
 
 
AUX Board v2.4 production version (May 2006)
            ► Design files         
                                       Scheme v2.4  (Ulticap 5.72 Ultimate)                        UTSCH file
                                       Scheme v2.4                                                                PDF(A3 format), block scheme
                                       PCB design file (Ultiboard 5.71 Ultimate)                 ddf file
                                       PCB Component placement                                       PDF(A3 format)
                                       Bill of Material                                                           EXCEL
            ► Process & pcb manufacturing file   (CAM350 format)                    Zip
            ► AUX_ELMB_V24_SPI2 modified firmware                                    Zip
                                         ELMB_board Boot loader SW                                  Zip
            ► PIC 16F873 program   (Watchdog of ELMB board)                       Zip
            ► Front panel & back panel mechanics                                               PDF_all
                                        Front panel                                                                PDF
                                        Back sub-panel  A                                                      PDF
                                        Back sub-panel  B                                                      PDF
 
            ☞ Production Database & QC reports  Aux_boardv2.3                    Zip 30Jul08
           
            ☞ Operation Manual                                                               info in AUX board tester manual
            ☞ Remote Control Manual                                                      info in AUX board tester manual
            ☞ Service Manual                                  design files and AUX board tester manual can be used