ISO5500DW

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The ISO5500DW is a versatile gate drive solution for isolators designed to switch between high and low levels in a variety of circuits and applications. Developed by International Rectifier, it is used by industries as diverse as fuel cells, power supplies, semiconductors and automotive applications. The ISO5500DW’s features and remarkable performance set it apart and make it a preferred choice for applications requiring multi-channel gate drive solutions.

The ISO5500DW is a two-channel gate drive designed to operate with 250 buses for each channel. This gives it a wide operating range and enables it to work efficiently in a variety of applications. The device features gate drive voltage range of 5 to 40 volts, a low on-state resistance of 80 mOhms, and a high on-state resistance of 20 mOhms. The ISO5500DW is capable of providing high resolution switching and can handle peak currents of up to 150 amperes.

The ISO5500DW is designed to support two-or-more channel applications. The device employs a built-in switch that can be switched between single-or-dual-channel mode, allowing it to offer a higher degree of flexibility in meeting the requirements of different applications. The device also features adjustable dead times, allowing it to optimize output performance while still maintaining the current limiting requirements of the circuit.

In terms of its working principle, the ISO5500DW is designed to use three distinct drive phases: pre-pulse, foldback, and breakdown (normal). During the pre-pulse phase, the device will apply a controlled current to the gate drive line to reduce or eliminate switching losses. This is followed by the foldback phase in which the device adjusts the internal resistance of the RS-485 network, providing a low voltage level to the gate drive lines. The final phase of the device is the breakdown phase, which limits the current by gradually adjusting the gate voltage.

The ISO5500DW offers considerable advantages over other gate drive solutions, such as excellent noise immunity and full support for every low-side gate drivers as well as the latest high-side gate drive devices. The device also offers high speed operation and is highly reliable with a long life cycle. The device is also suitable for low temperature applications and can support a wide range of operating temperatures from -40 to +100°C.

In summary, the ISO5500DW from International Rectifier combines an outstanding range of features with efficient and reliable operation. This makes it suitable for a wide range of industrial and automotive applications as well as many other applications requiring gate drive solutions. Its combination of adjustable voltage, current limiting, and adjustable dead times makes it both flexible and customizable, allowing it to meet the requirements of different applications with different levels of performance.

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