HA16117F Series
8. Summary of cases where P-RUN frequency fluctuates
If there is a double-pulse in P-RUN, RES may be output if the double-pulse has multiple frequency
components. If the P-RUN frequency fluctuates, refer to the following when making the P-RUN
setting.
• P-RUN normal detection region, duty dependency
1 M
100 k
10 k
1 k
Note: 1
When fP-RUN ≥ 20 kHz,
tOFF is frequency-dependent,
so care is required when
making the P-RUN setting
(see figure below).
Normal detection region*2
100
10
1
0
50
100
P-RUN pulse duty D (%)
Note: 2. This is the region when fP-RUN is constant.
If fP-RUN fluctuates within the normal detection region, the following applies:
Normal detection is performed when the condition fP-RUN H/fP-RUN L < M is satisfied.
• fP-RUN dependency of VCR, tOFF, M
tOFF
(s)
3
2
1
5
4
3
2
1
0
100 m
50 m
0
M
Multivibrator threshold voltage (1.6 V)
1 k
3 k
5 k 7 k 10 k
30 k 50 k 70 k 100 k
P-RUN frequency (Hz)
15
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