Exploring FNB41560: Datasheet, Features, and Applications

The FNB41560 is a smart power module perfect for controlling motors in appliances like washing machines and industrial fans. It combines a powerful 600V, 15A inverter with built-in safety features in a small package, making it great for reliable and efficient motor operation.

FNB41560 Overview

The FNB41560 is an intelligent power module designed for AC motor drives in low-power applications such as washing machines and industrial fans. It features a 600V, 15A three-phase IGBT inverter bridge that integrates control ICs for gate driving and protection, providing a high-performance, compact inverter solution. The module includes built-in bootstrap diodes and divided negative DC-link terminals for easy PCB layout and effective inverter current sensing. It also comes with a built-in thermistor for temperature monitoring and multiple protection features including under-voltage lockouts and over-current protection, ensuring reliability and safety in operation.

Housed in a 26-PowerDIP module, the FNB41560 is UL certified with an isolation rating of 2000 Vrms/min, making it suitable for through-hole mounting. While this module is not recommended for new designs, it remains a robust choice for existing applications needing efficient, space-saving solutions.

Bulk orders of the FNB41560 are available for businesses looking to secure supply of this primary component.

FNB41560 Features

• UL Certification: Certified under UL1557 with file number E209204, ensuring compliance with safety standards.

• Integrated Gate Drivers and Protection: Combines gate drivers and protection circuits within the module, simplifying design and enhancing reliability.

• Low Thermal Resistance: Utilizes a ceramic substrate to achieve low thermal resistance, improving heat dissipation.

• Low-Loss, Short-Circuit Rated IGBTs: Features IGBTs designed for low power loss and short-circuit protection, enhancing efficiency and safety.

• Built-In Bootstrap Diodes: Includes bootstrap diodes and dedicated Vs pins, simplifying PCB layout and reducing component count.

• Integrated NTC Thermistor: Contains a built-in NTC thermistor for quick temperature monitoring, aiding in thermal management.

• Separate Open-Emitter Pins: Provides separate open-emitter pins from low-side IGBTs, facilitating accurate three-phase current sensing.

• Single-Grounded Power Supply: Operates with a single-grounded power supply, simplifying power management.

• Isolation Rating: Offers an isolation rating of 2000 Vrms per minute, ensuring robust electrical isolation. These features make the FNA41560T2 suitable for applications in home appliances and industrial motor control systems.

The FNB41560 integrates six Insulated Gate Bipolar Transistors (IGBTs) configured as a three-phase inverter bridge, each paired with a freewheeling diode to manage inductive loads. Each IGBT is controlled by dedicated gate driver ICs, ensuring efficient switching and protection. The module includes built-in bootstrap diodes that facilitate the generation of the necessary gate drive voltages for the high-side IGBTs, simplifying the power supply design. Additionally, the integrated NTC thermistor provides quick temperature monitoring, enhancing system reliability by enabling thermal protection mechanisms. The separate open-emitter pins for the low-side IGBTs allow for precise current sensing in each phase, ideal for accurate motor control. This compact integration within a fully isolated package streamlines PCB layout and reduces the overall component count in motor drive applications.

FNB41560 Applications

Motion Control

Ideal for precise control of AC induction, BLDC, and PMSM motors in automation systems, offering integrated gate drivers and protection features for efficient and reliable operation.

Home Appliances

Suitable for appliances like air conditioners and refrigerators, providing compact and high-performance inverter solutions that enhance energy efficiency and system reliability.

Industrial Motors

Applicable in industrial motor drives, delivering robust performance with features like low-loss, short-circuit-rated IGBTs, and built-in temperature monitoring to ensure durability and safety in demanding environments.

FNB41560 Application Circuit

The FNB41560's application circuit exemplifies its role in three-phase motor control systems. It connects to a DC power supply through the P and N terminals, with the P terminal linked to the positive DC bus and the N terminal to the negative. The U, V, and W output terminals interface with the motor's corresponding phases, facilitating efficient power delivery. Control signals for the six IGBTs are managed via input pins, typically driven by a microcontroller or DSP, enabling precise modulation of motor speed and torque. The built-in bootstrap diodes simplify the high-side driver supply, reducing external component requirements. Additionally, the integrated NTC thermistor allows for quick temperature monitoring, enhancing system protection. This compact integration streamlines PCB design and improves overall system reliability.

Conclusion

In summary, the FNB41560 is a reliable choice for managing motors, offering a compact design with top safety features. While it's not for new projects, it remains valuable for current systems needing smart, space-saving solutions. This module is a testament to enduring design and continues to impact future power technologies.