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 Features • • • • • • • • • • • • • • • Complete solution for -3.3 V control Input voltage range: 90-265 VAC 50/60 Hz Negative 6 V/3.3 VDC aux power supply based on the VIPer16L in buck-boost topology Total power consumption in standby mode lower than 0.5 W for 264 V/50 Hz 48-pin, 32-bit value line family STM32F100C4T6B MCU as main controller Zero voltage switching (ZVS) interrupt to synchronize MCU events with voltage mains 1 x T1635H-6T and 1 x ACST1635-8FP for phase control of high power loads 5 discrete power level states with soft change for phase-angle controlled devices 1 x Z0109 and 3 x ACS108 for full wave control of low power loads Relay to demonstrate board noise robustness Red LED to indicate board mains supply Green LED for each ACS/ACST/Triac to indicate device on/off status JTAG programming connector External wire loop for gate current measurement I2C bus hardware/software ready August 2013 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 IEC61000-4-4 (burst) test. The board also allows designers to evaluate the feasibility of AC switch control with a 3.3 V supply. Gate currents can be measured and compared to the information given in application note AN2986. STEVAL-IHT005V2 is based on the recently-introduced 48-pin, 32-bit STM32F100C4T6B MCU running at 24 MHz (RC user-trimmable internal RC clock), featuring 16 kBytes of Flash memory, 12-bit A/D converter, 5 timers, communication interfaces, and 4 kBytes of SRAM. The power supply circuitry is based on the VIPer16L, an offline converter with an 800 V avalanche-rugged power section, operating at 60 kHz. The power supply provides negative 6 V in buck-boost topology. The STEVAL-IHT005V2 can control 2 high power loads up to 2830 W thanks to the T1635H, a 16 A, 600 V high temperature Triac and up to 2050 W using the ACST1635-8FP, a 16 A, 800 V high temperature overvoltage-protected ACST device. The high power load control is based on phase-angle control. To limit inrush current and possible current peaks, the board features a soft-start routine and a smooth power change function for the high power loads. The STEVAL-IHT005V2 can also control 4 low power loads up to 100 W thanks to 3 ACS108-8S, 0.8 A, 800 V overvoltage-protected ACS devices and a Z0109, 1 A standard 4 quadrant 600 V Triac. DocID025092 Rev 1 1/4 www.st.com Schematic diagram 1 STEVAL-IHT005V2 Schematic diagram Figure 1: STEVAL-IHT005V2 circuit schematic 2/4 DocID025092 Rev 1 STEVAL-IHT005V2 2 Revision history Revision history Table 1: Document revision history Date Revision 05-Aug-2013 1 DocID025092 Rev 1 Changes Initial release. 3/4 STEVAL-IHT005V2 Please Read Carefully Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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