This application note describes an induction cooking design based on the ST7FLITE09Y0, which can be used to evaluate ST's components or quickly start your own induction cooking development project. The design provides an opportunity to understand how an induction cooker works and to make an in-depth examination of the various modules and parts of this type of cooking application, such as the driving topology, how the resonant tank works, how the pot gets hot and how to safely remove it from the cooking element. The design is entirely controlled by a single ST7FLITE09Y0 microcontroller, which provides the PWM driving signals, communicates information to the user interface, and drives the fan and relay control to the plate feedback.
The document details an induction cooking design intended for evaluating ST components or initiating development projects. The system is entirely controlled by the ST7FLITEO9Y0 8-bit microcontroller, which generates PWM driving signals, manages user interface communication, and controls fan and relay functions based on plate feedback.
The note covers fundamental principles of induction heating, including L-C resonant circuits and magnetic field control. It provides a comprehensive breakdown of the system architecture via block diagrams and schematics, covering mains filtering, isolated power supplies, IGBT driver stages, and feedback mechanisms.
| Microcontroller Model | ST7FLITEO9Y0 |
|---|---|
| Mains Voltage | 220 V AC 50 Hz |
| DC Link Voltage | +325 V |
| Operating Efficiency | around 90% |
The system is entirely controlled by a simple ST7FLITEO9Y0 8-bit microcontroller.
This document describes an induction cooking design that can be used to evaluate ST components or to start a development project quickly.
The system uses 15 volts to supply the IGBT driver, fan, relay, and feedback circuitry.
The design requires 5 volts to power the remaining integrated circuits, such as the microcontroller.