ACPL-P314-560E

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Isolators - Gate Drivers

ACPL-P314-560E is an isolated gate driver IC optimized for Inter-Integrated Circuit (I2C) bus applications. This device\'s features make it suitable for applications that require isolation from host boards and for faster transient response than traditional optocouplers. It supports an I2C-bus interface with an adjustable I⁄O voltage and 5V TTL/CMOS-compatible outputs. It is designed to meet the industrial I2C bus standard (defined in the I2C-bus specification version 2.1) and operates in the I2C bus slave mode with eight independent address pins. The ACPL-P314-560E can switch up to 600mA and an adjustable pull-up resistors and capacitors around the I/O pins. In addition, the logic input pins are powered with up to 5V logic and feature ESD protection.

The ACPL-P314-560E is well-suited for transferring data signals or power through the isolation barrier between two circuits. The device can be used for different signal transmission protocols such as RS485, Ethernet, and other industrial protocols. The device\'s robust design and low operating power make it a great choice for applications with space limitations. It has also been designed to withstand high humidity and extreme temperature conditions.

In terms of working principle, the ACPL-P314-560E is an isolated gate driver IC that offers level shifter protection and functional isolation. The device utilizes open-drain outputs to switch the isolated side power supply directly while providing logic level shifting between the two connected sides. That is to say, the low supply voltage on the input side is shifted to the output side which is powered with an isolated supply voltage. To ensure proper isolation, the device has a galvanic barrier, which is a modified transformer with a principal leakage inductance of 2.4µH.

The galvanic barrier incorporates an optocoupler which is used to provide galvanic isolation. The optocoupler\'s LED is driven with logic voltage from the logic input pins on the input side. This in turn brings about a change in the output side voltage when driven by the LED\'s light. Consequently, the ACPL-P314-560E achieves logic level shifter protection. Additionally, an isolated power Mosfet drive enable pins are present that enable and disable the isolated side power supply.

Finally, the ACPL-P314-560E device is also equipped with edge rate control, which is useful for controlling the rise and the fall times of the output voltage. This helps to switch the voltage on the output side quickly, thereby increasing the overall efficiency of the device. Additionally, the adjustable I/O voltage ensures compatibility with varying output voltages. With the help of these features, the ACPL-P314-560E can be used for transferring signals or power across galvanic barriers.

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