SM72482E/NOPB Integrated Circuits (ICs)

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The SM72482E/NOPB is an integrated gate driver that provides gate drive and power supply voltage regulation for a variety of power devices, including IGBTs, MOSFETs, and Schottky diodes. It is well suited for a variety of consumer and industrial applications.

Overview

The SM72482E/NOPB is an integrated gate driver specifically designed to provide both gate drive voltage and power supply voltage regulation for various power devices. This device offers the flexibility of two independent gates per channel and can drive both n-channel and p-channel power devices. It also includes fault detection and current limit protection features. The SM72482E/NOPB provides optimized short-circuit protection over the entire operating temperature range, even when its supply voltage is lower than typical power modules. The SM72482E/NOPB also offers configurable gate drive voltage and a wide operating temperature range of up to 125°C.

Application Field

The SM72482E/NOPB is suitable for a variety of applications, including consumer and industrial motor drives, inverters, and uninterruptible power supplies (UPSs). This device can be used in automotive, telecom, renewable energy, and avionics systems, in addition to general-purpose power converter solutions.The SM72482E/NOPB is especially suited for applications that require short-circuit protection, low quiescent current consumption, and high switching frequency.

Working Principle

The SM72482E/NOPB is a dual-channel integrated gate driver that provides gate drive and power supply voltage regulation. It offers two independent gates per channel along with configurable gate drive voltage and a wide operating temperature range of up to 125°C. The SM72482E/NOPB incorporates a current limit protection circuit that monitors both the average current and the instantaneous peak current. If the current limit is exceeded, the gate drive is shut off until the current falls below the limit.\'

The SM72482E/NOPB also contains an integrated fault detector circuit that monitors the overcurrent condition by monitoring both the power supply and the gate drive voltages. The fault detector circuit is configured to trip at a programmable voltage between 0.85 V and 1.3 V. If an overcurrent condition is detected, the fault detector circuit shutdowns the gate drive until the fault is cleared. The SM72482E/NOPB also includes an under-voltage lock-out (UVLO) circuit that prevents the gate drive from operating when VCC falls below the UVLO threshold.

The SM72482E/NOPB features a dedicated input supply pin (VIN) for the gate drive voltage, allowing for improved efficiency when driving higher voltage devices. The VIN pin can be powered either directly from the input supply or, depending on the application, can be provided with bias voltage from an external regulator.

Conclusion

The SM72482E/NOPB is a powerful integrated gate driver that provides flexible gate drive and power supply voltage regulation for a variety of power devices. Its features, such as short-circuit protection, low quiescent current consumption and wide operating temperature, make it an ideal choice for applications requiring power module-like performance. The SM72482E/NOPB is suitable for a variety of consumer and industrial applications, such as motor drives, inverters and UPS systems.

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