ST Life.augmented


Cold thermostat kit based on AC switches and the STM8S
  • active 活性

The STEVAL-IHT001V2 thermostat kit provides a robust and low-cost ST solution (microcontroller and AC switches) to control refrigerators, freezers or fridge/freezer combinations.

Basic, defrost, and air circulation versions are configurable in order to address the low-end and medium-end cooling appliances market. It allows the control of a single-phase induction motor and a light bulb, and optionally, a defrost resistor and a fan, working on 220/240 VRMS, 50/60 Hz mains voltage. The thermostat kit is operational with 100/120 V RMS 50/60 Hz but the supply capacitor value must be modified.

The board can operate in an ambient temperature range from 0 °C to 60 °C.

The exact maximum temperature depends on the power of the loads. For demonstrative purposes a graphic user interface (GUI) has been developed.

The connection between the PC and STM8S microcontroller, the MCU performing thermostat regulation, is achieved through a USB bus.

As the STM8S is a low-cost MCU without an embedded USB peripheral, an additional MCU (STM32) has been used as a bridge between the PC and STM8S MCU, for demonstrative purposes only.

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Data Brief

Key Features

  • Low-cost solution for spark-free thermostats:
  • No need for a sealed version
  • Low-cost STM8S microcontroller for thermostat control
  • Low-cost capacitive power supply
  • High efficiency:
  • Refrigerator consumption reduction by adjusting and reducing the hysteresis threshold of the temperature
  • Improved efficiency by turning on the defrost resistor only when it's useful and not at each OFF cycle of the compressor (as done in some mechanical thermostats)
  • High system immunity:
  • Overvoltage protected ACS switches: ACST610-8FP for compressor control, ACS110-7SN for defrost resistor and ACS102-6TA for light bulb and fan
  • Class A criteria for IEC 61000-4-4 up to above 3 kV levels
  • Flexibility:
  • Development: program setting with PC interface to change firmware variables
  • Industrialization: end-of-production MCU programming thanks to FLASH, for soft upgrade and efficient MCU stock management
  • RoHS compliant


图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DB1651: Cold thermostat kit based on AC switches and the STM8S
3.0 142 KB

User Manual

描述 版本 大小
UM1542: Cold thermostat kit based on AC switches and the STM8S003F3
1.0 2,942 KB

Hardware Resources

Board Manufacturing Specification

描述 版本 大小
STEVAL-IHT001V2 gerber files
1.0 287 KB

Bill of Materials

描述 版本 大小
1.1 51 KB

Schematic Pack

描述 版本 大小
STEVAL-IHT001V2 schematics
1.1 123 KB

Related Tools and Software

Related Tools and Software

产品型号 描述
STSW-IHT001V2 STEVAL-IHT001V2 thermostat setup
STSW-STR7045 Production prgramming solutions for STR7 and STR9
STSW-STR7051 STR7/STR9 USB developer kit software
STSW-STR9002 Interfacing with the STR91x software library using Configuration and Programming Software (CAPS)
STSW-STR9006 Using the STR91xFA external memory interface (EMI)
STSW-STR9014 Using the STR91xFA DMA controller
STSW-STR9015 STR9 in-application Programming using UART

样品 & 购买

产品型号 Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-IHT001V2ActiveACST610; ACS110; ACS102; STM32F103C6; STM8S103F3Buy Direct208.25Distributor reported inventory date: 2015-11-28
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA50
Farnell Element14Order NowEUROPE51

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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