EPIQ 5 & 7 Training Manual
© 2016 Conquest Imaging
27
Power Regulator Board Block Diagram
Other PRB functions include:
Controls fan speed according to temperature conditions
monitored via the I
2
C bus by applying 10.2 to 13.8 Vdc in parallel
to all three system fans. Fan inrush current is limited to 3 Amps.
To reduce system noise during CW operation multiple
416.667KHz clock inputs from the ACB are used to synchronize
the switching regulators.
Passes three phase motor controller voltages from the backplane
to the Channel Board.
PRB
Fan
Temp
Control
PIC
HV
Supply
Fan
Channel
Board
BACK
PLANE
Power
Module
ACB
Motor
FAN_CTRL
24V
PWR_REG_ON
MOTOR_PHASE(3)
MOTOR_PHASE(3)
+5.5AS, 3.17A
+3.8AS, 5.24A
+2.3AS, 7.2A
-5.5AS, 3.35A
+3.3SS, 7.2A
+2.0DS, 1.68A
+13SS, 6.15A
-13SS, 1.85A
GND sense
PRB_PWR_GOOD
+HV_CBAS, 100W, 4A
HV +AS, 1.5W, 1A
HV -AS, 1.5W, 1A
HV DAC control voltages(3)
HV gain(2)
HV enable(3)
ARGON_PREG_CLK_1-6
I2C_UTIL
I2C_DIAG
PIC_MCLR_POW_REG
PREG_SPARE(3)
The PRB also receives
sense line input from
the Channel Board for
the following analog
and digital supplies:
+2.0 DS, 2.7 A
+2.3 AS, 7.1 A
+3.3 DS, 2 A
+3.8 AS, 7.2 A
+5.5 AS, 3.5 A
Ground
All manuals and user guides at all-guides.com
