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STEVAL-IHT002V1
Basic Thermostat Control Board for Cooling Applications based on ST7Ultralite

 Features and Description  Technical Documentation  Resources
 Key Products  Related Information
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Features and Description
Capacitive power supply providing approximately 30 mA at 220 VAC 50 Hz
Temperature level regulation (potentiometer)
Temperature measurement input (external NTC 5k)
Zero voltage switching (ZVS) to synchronize the gate pulses with the mains
Stall rotor detection via AC switch temperature monitoring
ST7Ultralite 8-bit, 8-pin MCU running at 1 MHz (internal clock)
ICC programming connector

Click for larger imageThe STEVAL-IHT002V1 is a low-cost evaluation board designed to replace existing mechanical thermostats.

While driving a compressor, the evaluation board is also capable of driving the RUN winding, replacing the PTC and directly driving the START winding. Stall rotor detection is also implemented. These functions are oriented towards reducing total power consumption.

The evaluation board is based on the new low-cost, 8-pin, 8-bit ST7Ultralite microcontroller (MCU), which controls the entire process. The MCU is equipped with programmable Flash memory, a 1 MHz internal clock source and runs 1 KB C-based software.

Although the evaluation board is specially designed to drive small to mid-size compressors, it is fully customizable and adaptable to any other application where thermostat or temperature control is required.

Technical Documentation
Application Note
/User Manual
Download
Resources
Gerber Files Download (31-October-2007, 30 KB)
Schematics Download (31-October-2007, 63 KB)
Bill of material Download (31-October-2007, 52 KB)
Key Products
ACST67S 
ST7FLITEUS5B6 
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Purchase STEVAL-IHT002V1