STEVAL-IHT005V2 Demonstration board with full 3.3 V ACS/Triac control using the STM32F100 Data brief IEC 61000-4-4 pre-compliance test passed (burst up to 8 kV) IEC 61000-4-5 pre-compliance test passed (surge up to 2 kV) RoHS compliant Description The STEVAL-IHT005V2 is designed as a complete solution proposal for home appliance applications based on STMicroelectronics components. Special emphasis is placed on demonstration of a robust full 3.3 V solution, based on 4 kV level in class A during an IEC- 61000-4-4 (burst) test. The board also allows designers to evaluate the feasibility of AC switch Features control with a 3.3 V supply. Gate currents can be measured and compared to the information given Complete solution for -3.3 V control in application note AN2986. STEVAL-IHT005V2 Input voltage range: 90-265 VAC 50/60 Hz is based on the recently-introduced 48-pin, 32-bit Negative 6 V/3.3 VDC aux power supply STM32F100C4T6B MCU running at 24 MHz (RC based on the VIPer16L in buck-boost user-trimmable internal RC clock), featuring 16 topology kBytes of Flash memory, 12-bit A/D converter, 5 Total power consumption in standby mode timers, communication interfaces, and 4 kBytes lower than 0.5 W for 264 V/50 Hz of SRAM. The power supply circuitry is based on 48-pin, 32-bit value line family the VIPer16L, an offline converter with an 800 V STM32F100C4T6B MCU as main controller avalanche-rugged power section, operating at 60 Zero voltage switching (ZVS) interrupt to kHz. The power supply provides negative 6 V in synchronize MCU events with voltage mains buck-boost topology. The STEVAL-IHT005V2 1 x T1635H-6T and 1 x ACST1635-8FP for can control 2 high power loads up to 2830 W phase control of high power loads thanks to the T1635H, a 16 A, 600 V high 5 discrete power level states with soft temperature Triac and up to 2050 W using the change for phase-angle controlled devices ACST1635-8FP, a 16 A, 800 V high temperature 1 x Z0109 and 3 x ACS108 for full wave overvoltage-protected ACST device. The high control of low power loads power load control is based on phase-angle Relay to demonstrate board noise control. To limit inrush current and possible robustness current peaks, the board features a soft-start Red LED to indicate board mains supply routine and a smooth power change function for Green LED for each ACS/ACST/Triac to the high power loads. The STEVAL-IHT005V2 indicate device on/off status can also control 4 low power loads up to 100 W JTAG programming connector thanks to 3 ACS108-8S, 0.8 A, 800 V External wire loop for gate current overvoltage-protected ACS devices and a Z0109, measurement 1 A standard 4 quadrant 600 V Triac. 2 I C bus hardware/software ready August 2013 DocID025092 Rev 1 1/4 www.st.com Schematic diagram STEVAL-IHT005V2 1 Schematic diagram Figure 1: STEVAL-IHT005V2 circuit schematic 2/4 DocID025092 Rev 1