STEVAL-IHM020V1 STMicroelectronics, STEVAL-IHM020V1 Datasheet - Page 16

• Manufacturer Part Number: STEVAL-IHM020V1
• Description: BOARD DEMO STCC08 AC SW DETECTOR
• Manufacturer: STMicroelectronics
• Type: Motor / Motion Controllers & Driversr

Specifications of STEVAL-IHM020V1

• Main Purpose: Power Management, Triac Controller
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: STCC08, ST7FLITE39F2
• Primary Attributes: AC Switch Driver with Failure Mode Detector
• Secondary Attributes: 4 Toggle Switches for Failure Simulation, Capacitive Power Supply
• Input Voltage: 5 V
• Product: Power Management Modules
• Silicon Manufacturer: ST Micro
• Silicon Core Number: STCC08
• Kit Application Type: Power Management
• Application Sub Type: AC Switch Failure Mode Detector
• Kit Contents: Board Docs
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ST7LITE39F2
• Other names: 497-8403

IEC 61000-4-4 Burst immunity test
5
5.1
5.2
5.3
16/23
IEC 61000-4-4 Burst immunity test
Test conditions
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●
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Demonstration board immunity test
The AC line input X2 capacitor C15 (10 nF) is used to help avoid triggering the AC switch
(ACS108-6S). The MCU program reads the AVF signal at each AC line peak voltage (see
Figure
level for three consecutive AC line cycles.
Figure 12. AVF signal detection
The demonstration board and mains wires are placed 10 cm above the ground reference.
The mains wire is shorter than 1 m. Each operating cycle has been tested (load OFF and
ON). The burst withstanding level is higher than 4 kV without spurious triggering of the ACS
or ST7Lite3 MCU loss, whatever the coupling mode (to L, N, PE, etc.).
Recommendations for improving application immunity
To improve application EMC performance, the software must be EMC-oriented (for more
information please refer application note AN1015):
●
Ambient temperature: 25 °C
Relative humidity: 35%
Test performed in accordance with IEC 61000-4-4
Auto-recovery routine. At each RESET interrupt, the program must check if the data in
the RAM are stored as scheduled. Indeed, a RESET can occur without the supply
voltage having fallen below V
startup is not necessary, and the program can continue working with the previous RAM
ZVS
12). The AC switch state detection is deducted if the AVF signal remains at the same
ZVS delay
ZVS detection => TIMER ON
TIMER
> T/4 ms
READ AVF and TIMER OFF
T/2 ms
RM
(data retention parameter). In this case, a complete
ZVS delay
ZVS detection => TIMER ON
READ AVF and TIMER OFF
V
AC
UM0583
AM00149v1