STEVAL-IHM020V1 STMicroelectronics, STEVAL-IHM020V1 Datasheet - Page 9

• 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

UM0583
Note:
Table 2
Knowing the IN signal state, the MCU is able to define the AC switch state by analyzing the
AVF signal. According to the failure mode, the MCU can place the system in a safe
configuration by switching off the home appliance front-end relay.
Table 2.
“If the AC switch is damaged in short-circuit: the ‘CC’ LED is ON (D8)”
“f the AC switch is damaged only in one direction (diode mode): the ‘DIODE’ LED is ON
(D6)”
STCC08 control (IN)
gives the AC switch state according to the AVF signal and the MCU control (IN).
0
0
0
1
1
AVF output definition
+V
+V
CC
CC
(except at each zero crossing of the AC line)
(except at each zero crossing of the AC line)
Toggle from +V
AVF signal
0
0
CC
to 0
STCC08 description
AC switch states
OFF (no failure)
ON (no failure)
Diode mode
Short-circuit
Open circuit
9/23