Half bridge induction cooker

This solution is suitable for household induction cookers, with a maximum power of up to 15 kilowatts. It can support high-wattage stir-frying functions, or requires linear power adjustment and low-power continuous heating to maintain boiling point, heat preservation and other functions. It also has hardware security protection mechanisms to achieve high efficiency. , safety features.

The induction cooker solutions are: single-tube solution, half-bridge solution and full-bridge solution. The single-tube solution is suitable for less than 2 kilowatts (mostly used in household induction cookers at present); but if a high-wattage stir-frying function is required, the power needs to reach 3 kilowatts ~ 15 kilowatts, or linear power adjustment and boiling point maintenance, heat preservation and other functions are required. A half-bridge solution is required; for industrial heating exceeding 15 kilowatts, a full-bridge solution is required. Nuvoton's half-bridge induction cooker solution uses an industrial-grade microcontroller with an operating temperature of -40°C ~ 105°C as the main control. It has a built-in hardware safety protection mechanism to achieve high efficiency and safety features. The maximum power can reach 15 kilowatts and supports linear power adjustment. And low-power continuous heating (maintaining boiling point, keeping warm, etc.) function, and also provides a multi-head stove solution to achieve centralized control and coordinated distribution of total power.

Single-burner stove/double-burner stove

• An Introduction:
  • Arm® Cortex®-M0, up to 48 MHz, can quickly detect, adjust power and safety protection in real time
  • Built-in 12-bit 6-channel ADC, 2 comparators
  • Multi-channel accurate detection: grid voltage, current, IGBT temperature, wire reel temperature, pot bottom temperature, zero-crossing detection, etc.
  • Built-in 48 MHz 16-bit 6-channel PWM (complementary with dead zone)
  • Efficiently control IGBT switches to improve efficiency and extend service life
  • Adjustable dead zone, compatible with a variety of IGBTs

• Security protection mechanism:
  • Over-temperature, over-voltage, over-current, surge and other output protection
    (external signals can switch PWM on and off and set the output state to achieve fast protection)
  • Centralized control and coordinated distribution of total power

Multi-burner stove (up to 5 burners)

• An Introduction:
  • Arm® Cortex®-M4, up to 72 MHz, can quickly detect over-temperature/over-voltage/over-current of each stove, and adjust power distribution and safety protection in real time
  • 12-bit 16-channel ADC, 2 comparators
  • Multi-channel accurate detection: grid voltage, current, IGBT temperature, wire reel temperature, pot bottom temperature, zero-crossing detection, etc.
  • 144 MHz, 16-bit 12-channel PWM (complementary with dead zone)
  • Efficiently control IGBT switches to improve efficiency and extend service life
  • Adjustable dead zone, compatible with a variety of IGBTs

• Security protection mechanism:
• Safety protection mechanism: over-temperature, over-voltage, over-current, surge and other output protections
  (external signals can switch PWM on and off and set the output state to achieve fast protection)
• Centralized control and coordinated distribution of total power

• Program features:
  • Supports linear power output and low-power continuous heating, boiling point maintenance, and heat preservation functions
  • The half-bridge circuit flexibly adjusts the charging and discharging time of the upper and lower arm IGBTs.
  • Multiple safety and fast protection: overturning, over-temperature, over-voltage and over-current, etc., 12-bit 6-channel ADC,
    2 comparators and other signal hardware to directly switch PWM
  • Improve efficiency and extend service life: 16-bit PWM (complementary with dead zone), which can efficiently control IGBT switching

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