Avago Technologies ACPL-339J-000E - Manual (Page 3)

3
Practical Connections of the Evaluation Board Using IGBT/Power MOSFET for Actual Inverter Test
1. Solder actual IGBTs/Power MOSFETs at Q5 (or Q6) for the top and bottom arms of the Half Bridge Inverter Isolated
Drivers.
2. Connect a +5 V DC isolated supply 1 across +5 V and GND terminals of CON1 for both arms of the Isolated Drivers.
3. Connect another isolated DC supply 2 (voltage range from 21.6 V ~ 30 V) across V
cc2
and V
ee
terminals of CON2 for top
arm.
4. Connect another isolated DC supply 3 (voltage range from 21.6 V ~ 30 V) across V
cc2
and V
ee
terminals of CON2 for
bottom arm.
5. Connect the signal output (meant to drive the top arm of half-bridge Inverter) from the microcontroller to Signal
Input 1 across pin IN1+ and IN1– of CON1 w.r.t. GND of Top Inverter Arm Isolated Driver.
6. Connect the signal output (meant to drive the bottom arm of half-bridge Inverter) from the microcontroller to Signal
Input 2 across pin IN1+ and IN1– of CON1 w.r.t. GND of Bottom Inverter Arm Isolated Driver.
7. Use a multi-channel Digital Oscilloscope to capture the waveforms at these points:
a. LED signal at IN1+ pin with reference to (w.r.t.) GND for Top Arm
b. LED signal at IN1+ pin w.r.t. GND for Bottom Arm
c. Fault output for any fault signal appearing at FAULT1 w.r.t. GND
d. Fault output for any fault signal appearing at FAULT2 w.r.t. GND
e. V
gmos
for the gmos output voltage of ACPL-339J at U1 pin 14 w.r.t. V
e
of Top Inverter Arm (differential probe
needed)
f. V
gmos
for the gmos output voltage of ACPL-339J at U1 pin 14 w.r.t. V
e
of Bottom Inverter Arm (differential probe
needed)
g. V
desat
for the DESAT voltage of Q5 (or Q6) w.r.t. V
e
of Top Inverter Arm (differential probe needed)
h. V
desat
for the DESAT voltage of Q5 (or Q6) w.r.t. V
e
of Bottom Inverter Arm (differential probe needed)
i. V
gIGBT
for the gate driving voltage of Q5/Q6 w.r.t. V
e
of Top Inverter Arm (differential probe needed)
j. V
gIGBT
for the gate driving voltage of Q5/Q6 w.r.t. V
e
of Bottom Inverter Arm (differential probe needed)
8. Connect the high voltage cable from Top Arm IGBT Emitter pin to the Bottom Arm IGBT Collector pin and then to the
Inverter load.
9. Connect the high voltage cables from Top Arm IGBT Collector to HVDC+ and from Bottom Arm IGBT Emitter to HVDC–
respectively as shown.
Note:
To protect the Inverter and its driver circuitries, it is recommended that you enable the current limiting function of the HV supply supplying the
High Voltage DC Bus during this test.