RL78/G1F Motor Driver Board GB01
User's Manual
R12UT0012EJ0100 Rev.1.00
Page 16 of 32
20.10.2020
8.5 3-Phase Voltage Detection Filter Switching Circuit
This board integrates a circuit used to switch the filter constant for 3-phase voltage detection. When the
signal level of the corresponding pin is changed, C of the ERC filter is switched, and the filter constant can
thus be changed.
10k
Ω
470
Ω
NC
V
U
Vin
Vout
V
V
V
W
0.1
µ
F
FSW0
FSW1
FSW2
100k
Ω
Figure 8-6 Schematic Diagram of 3-Phase Voltage Detection Filter Switching Circuit
Table 8.2 3-Phase Voltage Detection Filter Switching Circuit
FWS No.
Pin Signal Level
Filter Circuit State
Connected RL78/G1F Pin
FSW0
High
NC
P60
Low
0.1µF
FSW1
High
NC
P61
Low
0.1µF
FSW2
High
NC
P62
Low
0.1µF
