STMicroelectronics STEVAL-IHT005V2, Руководство пользователя

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Board immunity performances UM1631
16/27 DocID024503 Rev 1
Note: A. No changes in functionality. The board works properly, no reset occurring.
B. Reset occurs, but the board recovers without external intervention.
C. Application does not recover without external intervention.
Two states were tested. Standby mode, when all devices are OFF, and “ON + level 3" when
all devices are turned ON: the devices controlled in full wave mode (T3, ACS1, ACS2,
ACS3) are ON for the whole period and phase angle controlled devices (T1, T2) are ON at
level 3 (5.2 ms delay after zero voltage crossing signal).
6.3.4 Noise suppressor influence
The noise suppressor circuit that consists of X2 capacitor 10 nF (C2, C12, C14, C19, C21,
C23) and resistor 75

(R13, R19, R28, R43, R51, R60) has significant influence on burst
immunity of the devices, as shown in the tests results below (to compare with Table 5
results).
Table 5. IEC-61000-4-4 results with input filter modification
STEVAL-IHT005V2
V
IN
254 VAC - 50 Hz
2 kV 4 kV 6 kV 8 kV
Standby
+ L
ON + level 3 (5.2 ms)
A
A
A
A
B
B
B
B
Standby
+ N
ON + level 3 (5.2 ms)
A
A
A
A
B
B
B
B
Standby
+ L +N
ON + level 3 (5.2 ms)
A
A
A
A
B
B
B
B
Standby
- L
ON + level 3 (5.2 ms)
A
A
A
A
B
B
B
B
Standby
- N
ON + level 3 (5.2 ms)
A
A
A
A
B
B
B
B
Standby
- L +N
ON + level 3 (5.2 ms)
A
A
A
A
B
B
B
B
Table 6. Immunity of the high power devices without RC noise suppressor
STEVAL-IHT005V2
V
IN
254 VAC - 50 Hz
L+ L- N+ N- LN+ LN-
T1635H (150 W light bulb load) 1.7 kV 1.6 kV 1.9 kV 1.7 kV 2.1 kV 1.7 kV
ACST16 (150 W light bulb load) 4.6 kV 3.5 kV 4.8 kV 3.1 kV 3.3 kV 3.1 kV