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Induction Cooker | Cypress Semiconductor

Block Diagram

PSoC programmable analog & digital resources integrate everything shown in light blue below.

Design Considerations

The system functions in induction cook tops include touch and induction subsystems. The touch subsystem needs to be robust from water drops and immune from EMI. The manufacturing variation also demands time-consuming tuning to achieve optimal capacitive touch sensing performance. The induction subsystem includes a heatproof ceramic panel, which is used as the cooker plane. Through the electrified coil under the plane, the AC current creates a magnetic field that induces a vortex in iron and stainless steel pan bottom. This heats the pan bottom quickly, and then conducts the heat to food. The induction subsystem typically includes functions such as Insulated-Gate Bipolar Transistor (IGBT) self protection, temperature and power control.

This block diagram shows a Dual Induction Cooker, where the user interface (UI) and coil control are integrated to a single device. 

CapSense provides unprecedented touch performance

  • Multiple types of sensors such as buttons, sliders and proximity sensors
  • 5mm thick overlay
  • Water resistance with wipe detection across the entire panel

Visual and audible feedback with UDB based Segment LED drive and Buzzer, with minimal firmware overhead

Integrated Coil control

  • Dual coil drive
  • Pan detection implemented with programmable analog and digital blocks inside PSoC
  • Safety features implemented inside the PSoC –over-voltage, over-current and temperature protection

We developed Class B libraries along with our world-class CapSense to secure safe operation. 


Application Notes

  • Capacitive touch sensing has changed the face of industrial design in products such as cellphones, PCs, consumer electronics, automotive, and white goods. Cypress CapSense solutions bring elegant, reliable, and easy-to-use capacitive touch sensing functionality to your design. Our capacitive touch sensing solutions have replaced more than four billion mechanical buttons

  • This document provides design guidance for building CapSense applications with the PSoC 3 and PSoC 5LP family of devices.

  • PSoC 3, PSoC 4, and PSoC 5LP have a powerful and flexible programmable digital peripheral system. In addition to a set of fixed function blocks (4 timers, I2C, USB, CAN), they offer as many as 24 programmable Universal Digital Blocks (UDBs) and an extensive signal routing system called the Digital System Interconnect (DSI).

  • The PSoC® 4 and PSoC 6 CapSense® Design Guide shows how to design capacitive touch sensing applications with the PSoC 4, PSoC 6 families of devices.

  • Application Note AN86233 shows how to use the PSoC 4 low-power modes and features to operate at very low power levels while retaining essential functionality.

  • AN88619 shows you how to design a hardware system around a PSoC® 4 device, starting with considerations for
    package selection, power, clocking, reset, I/O usage, programming and debugging interfaces, and analog module
    design. Also included are instructions on how to use PSoC Creator™ to configure the device for the hardware

Development Kits/Boards

Software and Drivers

  • PSoC Creator

    PSoC Creator is a state-of-the-art software development IDE combined with a revolutionary graphical design editor to form a uniquely powerful hardware/software co-design environment.

  • PSoC Designer

    PSoC Designer is the revolutionary Integrated Design Environment (IDE) that you can use to customize PSoC to meet your specific application requirements. PSoC Designer software accelerates system bring-up and time-to-market.