Inverter - Renesas MCI-HV-1 User Manual

MCI-HV-1 User's Manual
4.2.2
PFC over current detection
OC_PFC is HIGH when PFC current is below 49.1 A, and goes LOW when PFC current exceeds 49.1 A.
OC_PFC is output to the CPU board connector.
CS_PFC-

4.3 Inverter

4.3.1 Phase voltage sensing
U, V and W-phase voltages (IPM_UOUT, IPM_VOUT, IPM_WIOUT) are converted to analog signals
ranging 0~AVCC according to the following equation and output to CPU board connector as UV_AD,
VV_AD and WV_AD.
R12UZ0138EJ0100 Rev.1.00
February 28, 2024
+5V
20k OPAMP
1.2k
20k
GND
1.2k
PGND
Fig. 4-4 PFC over current detection
VU_AD = IPM_UOUT ×
VV_AD = IPM_VOUT ×
VW_AD = IPM_WOUT ×
Fig. 4-5 Phase voltage sensing
Comparator
+5V
4.7k
10k
470
47p
GND
6.8
2006.8
6.8
2006.8
6.8
2006.8
VCC
10k
OC_PFC
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