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dsPICDEM? MC1H 3-Phase High Voltage Power Module
1.6
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
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)
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
TP 10 LIVE Serial Data from PIC12C671 for voltage feedback
TP 11 LIVE Serial Clock from PIC12C671 for voltage feedback
TP 12 LIVE Divided down voltage of half DC bus
TP 13 LIVE High reference used for FAULT trips
TP 14 LIVE Low reference used for FAULT trips
TP 15 LIVE Fault Reset (and PIC12C671 MCLR) line (Active Low)
TP 16 LIVE +15V power supply
TP 17 Live +5V power supply
TP 18 ISOLATED High reference used for FAULT trips
TP 19 ISOLATED Low reference used for FAULT trips
TP 20 LIVE Star Reference Point for Low Voltage PSUs
LIVE_DATA
LIVE_SCLK
HALF_BUS_SENSE
HIGH_REF
LOW_REF
RESET
+15V
+5V
ISO_HIGH_REF
ISO_LOW_REF
—
DS70096A-page 36
? 2003 Microchip Technology Inc.
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