ACPL-W340-000E

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Isolators - Gate Drivers

The ACPL-W340-000E device is an isolated gate driver designed to operate with a wide voltage range of 8 volts to 320 volts. It is suitable for both traction drive and traditional motor control applications through its ability to control high power MOSFETS. This application note explains the characteristics and performance of the ACPL-W340-000E gate drive, as well as details on its application fields and working principles.

Application Fields

The ACPL-W340-000E gate driver is designed primarily for driving high power MOSFET gates in high power applications such as motor control, inverter control, lighting control, and general purpose power systems. The device has an integrated bootstrap diode to ensure proper gate voltage even at high switching frequencies, and its robust design makes it suitable for many safety-critical applications. It has an isolated data interface and a wide voltage range, making it flexible enough to be used in various industrial environments.

Working Principle

The ACPL-W340-000E gate driver works by using a low-bandwidth signal to control the gate of a MOSFET. The device isolates the low-bandwidth signal, which is transmitted across the insulation boundary. The power stage of the device uses a wide voltage range of 8-320VDC which further isolates the input signal from the output signal, ensuring safe operation. A bootstrap diode is used to maintain the gate voltage at a specified voltage level, even at a high switching frequency.

The ACPL-W340-000E has a built-in high-speed FET driver circuit with a maximum switching speed of 2.4 MHz. The current capacity of the device is rated at a maximum of 400mA. The gate driver also provides protection against current over 10A pulses on the source and can offer short circuit protection as well.

The ACPL-W340-000E offers an adjustable dead time and provides a diagnostic signal to detect load fault. This gate driver is designed for both single and dual-channel MOSFETs and is suitable for applications with high voltage power supplies.

Conclusion

The ACPL-W340-000E is an isolated gate driver designed primarily for high power applications such as motor control, inverter control, lighting control, and general purpose power systems. It provides robust performance with its wide voltage range and integrated bootstrap diode, and adjustable dead time to meet the requirements of various high power applications. The device also offers short circuit protection and can operate at a maximum switching frequency of 2.4 MHz.

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