The **TP11368** is a specialized Integrated Circuit (IC) commonly used in the consumer electronics industry, specifically within **induction heating control systems** (such as induction cookers and hobs). It serves as the primary system controller, managing power modulation and safety protocols. --- ### 1. Key Technical Specifications The following table outlines the general electronic characteristics of the TP11368 series: | Parameter | Specification | | :--- | :--- | | **Package Type** | SOP-16 / DIP-16 | | **Operating Voltage** | 3.3V to 5.5V DC | | **Core Function** | Induction Heating Controller / MCU | | **Control Method** | PWM (Pulse Width Modulation) | | **Safety Integrated** | Over-voltage, Over-current, and Over-temperature | --- ### 2. Main Functional Blocks The TP11368 integrates several critical electronic components and logic circuits into a single chip to manage the high-power environment of an induction heater: 1. **PWM Generator**: Controls the switching frequency of the IGBT (Insulated Gate Bipolar Transistor). By varying this frequency, the IC regulates the heat intensity. 2. **ADC (Analog-to-Digital Converter)**: Reads data from NTC thermistors to monitor the temperature of the ceramic glass and the IGBT heatsink. 3. **Pan Detection Logic**: Uses feedback loops to detect if a compatible ferromagnetic pot is placed on the coil. If no pan is detected, the IC shuts down the power stage. 4. **Voltage/Current Sensing**: Monitors the AC input to ensure the device operates within safe limits, protecting against power surges. --- ### 3. Application Circuit Components When designing a board around the TP11368, the following peripheral electronic parts are typically required: * **IGBT**: The power switch (e.g., FGA25N120) controlled by the TP11368 PWM signal. * **Bridge Rectifier**: Converts AC input to DC for the induction coil. * **Resonant Capacitors**: High-voltage capacitors that work with the induction coil to create an LC resonant circuit. * **Optocouplers**: Often used to isolate the low-voltage control side (IC) from the high-voltage power side. --- ### 4. Simplified Pin Configuration (General SOP-16) ```c // Typical pinout logic for TP11368 based controllers Pin 1: VCC (Power Supply) Pin 2: GND (Ground) Pin 3: PWM Output (To IGBT Driver) Pin 4: Current Sensing Input Pin 5: Voltage Sensing Input Pin 6: NTC Temperature Sensor Input ... Pin 16: User Interface / Display Data Out ``` ---