ADUM4223BRWZ-RL

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The ADUM4223BRWZ-RL integrated circuit is an isolator used in gate drive applications. It is a 3.3V powered, low frequency, galvanic isolation component with a very high input-to-output isolation voltage (>7kV RMS). The device is designed to work with 1-MP signals with up to 10 MHz of signal frequency. It also provides a 2000 Vrms of digital isolation at frequencies up to 1 MHz.

The ADUM4223BRWZ-RL has two channels, one for input signals and one for output signals. The input signal is applied to the primary side (SLP pin) where it is transformed to differential signals with a current-mode (CM) converter. The differential signals are then converted to CM signals and transmitted through an isolator to the differential receiver on the secondary side. The receiver then converts the CM signals to standard logic-level signals (SLN pin), which are then presented to the gate driver.

The ADUM4223BRWZ-RL has two onboard digital isolation controller sections, which provide remote sensing, supply regulation, and fault monitoring. The remote sensing function monitors both the input and output of the isolation controller to provide information about the signal timing and level of each signal. The supply regulation feature adjusts the power supply voltage to ensure the isolation device is functioning properly. The fault monitoring feature monitors the output of the isolation device and shuts off the power supply if any issues occur.

The ADUM4223BRWZ-RL is also designed to power multiple gate drivers in parallel. It includes an on-board power multiplexer, which serves to route the power managed between the primary and secondary sides, allowing power to be transferred from one side to the other without the need for external components. This feature is particularly useful when multiple gate drivers need to be powered in parallel, as it eliminates the need for multiple power supplies.

Overall, the ADUM4223BRWZ-RL integrated circuit is an excellent choice for use in gate drive applications. Thanks to its high isolation voltage, low frequency operation, digital isolation controller sections, and multiple power multiplexer, it can provide efficient and reliable power and signal transfer between the primary and secondary sides.

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