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dsPICDEM? MC1L 3-Phase Low Voltage Power Module
1.7
TEST POINTS
The following test points are all located on the topside of the PCB. See Appendix A for
references to the net names on the schematics.
Test Point
TP 1
TP 2
TP 3
TP 4
TP 5
TP 6
TP 7
TP 8
TP 9
TP 10
TP 11
TP 12
TP 13
TP 14
TP 15
TP 16
TP 17
TP 18
TP 19
TP 20
Signal Function
LIVE PFC Switch Firing Command (Active Low)
LIVE Red Top Switch Firing Command
LIVE Red Bottom Switch Firing Command
LIVE Yellow Top Switch Firing Command
LIVE Yellow Bottom Switch Firing Command
LIVE Blue Top Switch Firing Command
LIVE Blue Bottom Switch Firing Command
LIVE Fault Indication
LIVE Brake Chopper Firing Command (Active Low)
LIVE Serial Data from PIC12C671 for voltage feedback
LIVE Serial Clock from PIC12C671 for voltage feedback
LIVE Divided down voltage of half DC bus
LIVE High reference used for FAULT trips
LIVE Low reference used for FAULT trips
LIVE Fault Reset (and PIC12C671 MCLR) line (Active
Low)
LIVE +15V power supply
Live +5V power supply
ISOLATED High reference used for FAULT trips
ISOLATED Low reference used for FAULT trips
LIVE Star Reference Point for Low Voltage PSUs
Net Name
PFC_FIRE
FIRE_R_TOP
FIRE_R_BOT
FIRE_Y_TOP
FIRE_Y_BOT
FIRE_B_TOP
FIRE_B_BOT
FAULT
BRAKE_FIRE
LIVE_DATA
LIVE_SCLK
HALF_BUS_SENSE
HIGH_REF
LOW_REF
RESET
+15V
+5V
ISO_HIGH_REF
ISO_LOW_REF
—
DS70097A-page 32
? 2003 Microchip Technology Inc.
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