STMicroelectronics STEVAL-IHT005V2 User Manual page 11

UM1631
Full wave pulse control is based on sending gate control pulse immediately after ZVC
signal. Gate control pulse length is defined by the software.
Refer to
pulse is set separately for 50 Hz and 60 Hz mains.
Device Variable name for 50 Hz mains
ACS1 ACS_1_SWITCHTIME_50HZ
ACS2 ACS_2_SWITCHTIME_50HZ
ACS3 ACS_3_SWITCHTIME_50HZ
Z0109 Z0109_SWITCHTIME_50HZ
ACST16 ACST16_SWITCHTIME_50HZ
T1635H T1635H_SWITCHTIME_50HZ
1. The timer step is 100 µs.
Figure 5. Full wave control description
Table 2 for default gate current pulse duration for all AC switches. Duration of each
Table 2. Initial gate current pulse duration
Initial gate
pulse
duration Variable name for 60 Hz mains
(ms/timer
(1)
steps)
10/100 ACS_1_SWITCHTIME_60HZ
2/20
ACS_2_SWITCHTIME_60HZ
2/20 ACS_3_SWITCHTIME_60HZ
2/20 Z0109_SWITCHTIME_60HZ
1/10 ACST16_SWITCHTIME_60HZ
1/10 T1635H_SWITCHTIME_60HZ
DocID024503 Rev 1
Functional description
Initial gate
pulse
duration
(ms/timer
(1)
steps)
8.3/83
1.6/16
1.6/16
1.6/16
0.8/8
0.8/8
11/27