STEVAL-IHM020V1 STMicroelectronics

STEVAL-IHM020V1 Demonstration board based on the STCC08 AC switch failure mode detector Data Brief Features ST7LITE39F2 MCU to: drive the AC switch through the STCC08 analyze the AVF signals and detect an AC switch failure Mechanical switches to simulate AC switch failures (diode mode, short and open circuit) Mechanical control switch to turn ON or OFF the AC switch through the MCU LEDs used to indicate AC switch states STCC08 used to control ACS, ACST and STEVAL-IHM020V1 TRIAC up to 10 mA IGT and to monitor AC switch states Measure points for connecting voltage probes such as drain pumps, door locks, heaters, cooling fans and compressors. Capacitive power supply (5 V DC) For information regarding the setup and operation 15 W (under 230 V) light bulb (load) of the STEVAL-IHM020V demonstration board, refer to user manual UM0583. Description The STEVAL-IHM020V demonstration board allows users to: evaluate the full ST solution (microcontroller + STCC08) test and analyze the AC switch failure detection features of the STCC08 device This demonstration board provides a means to evaluate the performance of the STCC08, an AC switch failure mode detector and AC power switch driver. The device is dedicated to driving up to 10 mA IGT AC switches (ACS, ACST and TRIACs), and detecting any switch failures. This solution embeds a switch driver and an AC switch state detector. It contributes to system safety by monitoring AC switches driving sensitive loads November 2008 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4 Obsolete Product(s) - Obsolete Product(s)Schematic diagram STEVAL-IHM020V1 1 Schematic diagram Figure 1. Circuit schematic 2/4 Obsolete Product(s) - Obsolete Product(s) TP1 NN COM / V CC TP3 F1 FUSE / 1 A COM / V CC D1 Varistor 375 V 2 C15 C1 ++ C2 J1 5.6 V - 0.5 W R13 3 100 nF / 16 V 1 220 F / 25 V 10 nF - X2 2 TP4 R14 C16 D2 1 39 - 3 2.2 F - X2 1N4148 GND AC mains ZVS TP10 TP5 R9 R10 R11 R12 ININ TP2 68 k 68 k 68 k 68 k L C16 ZVS 1 nF IN MCU C3 100 nF / 16 V C14 100 nF TP8 AVF U1 COM / V COM / V CC CC 5 4 AC V AC C8 C9 CC R24 Gate 6 3 120 nF 120 nF 1.2 K NC U2 GATE RST COM / V CC R23 / 16 V / 16 V 1 20 7 2 V OSC/CLKIN RIG AVF SS 19 J3 2 COM / V 43 8 1 CC V OSC2 IN MCU DD GND IN 10 3 RST RST 9 STCC08 4 R16 PB0/AIN0 8 R17 7 SW1 R15 5 0 PB1/AIN1 6 18 C4 C5 0 PA0(HS) C6 680 k 10 nF 10 nF 5 10 nF / C7 PA1(HS) 17 / 16 V / 16 V 4 16 V 100 nF / 16 V PA2(HS) 16 3 PA3(HS) COM / V 6 15 2 PB2/AIN2 CC IN MCU PA4(HS) 1 LS 7 14 D3 D4 PB3/AIN3 1N4007 1N4007 PA5(HS) 8 13 PB4/AIN4 INDART J2 SW2 SW3 9 PA6(HS) 12 J2 Gate U3 CONNECTOR: 1 PB5/AIN5 light TP6 ACS HE10 11 bulb PA7/TDO OUT 2 10 LS PB6/RDI - 15 W SW4 TP9 R18 R19 R20 R21 R22 R25 ST7LITE39 470 470 470 470 470 470 ON / OFF SW5 C13 C12 C11 C10 D5 D6 D7 D8 D9 D10 R1 R2 R3 R4 10 nF 10 nF 10 nF 10 nF AC COM / V OPEN CC ON CC 56 k 56 k 56 k 56 k DIODE R5 STCC08 CNTRL STCC08 CNTRL TP7 56 k ZVS AC R6 56 k R7 56 k R8 56 k AM00305