FDS6910

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FDS6910 is a power MOSFET array manufactured by Fairchild Semiconductor. It is used in a variety of circuits including high-speed switching, load switching, motor control and class D amplifiers. Its uses are highly dependent on its technical characteristics, which are discussed below.

Application Field

FDS6910 is designed for applications requiring fast switching, high power levels and high current capability. It is particularly suited to high-current switching applications, such as those in motor control circuits, and can be used to drive dc motors, stepper motors, and other power-intensive electrical loads. It is also used in class D audio amplifiers as its switching capabilities reduce distortion and create a more efficient audio distribution system.

The device is available in a variety of packages, allowing for a variety of use cases. It can be arranged in parallel to form a universal gate driver, or in series for better noise immunity. This makes it a versatile MOSFET array, allowing for applications that require a large amount of current or need to switch quickly and with high accuracy.

Working Principle

The FDS6910 utilizes an array of FETs, or field-effect transistors, controlled by a unipolar (on/off) driver. A FET is a transistor that is operated by a voltage signal, rather than a current signal. In the case of the FDS6910, each FET is controlled by a signal fed to their respective gate pins. This allows for each FET to be turned on and off with a simple signal.

When the signal applied to the gate is high (on), the FET is turned on and current flows through the FET. Conversely, when the signal is low (off), the FET is turned off and no current flows. This allows for precise current control with minimal voltage changes.

The FDS6910 is also useful for high-speed switching applications due to its low rise and fall times. With a rise time of 4 ns and a fall time of 4 ns, the FDS6910 is able to switch quickly and accurately, making it suitable for use in switching power supplies, motor drivers, and other applications that require fast response times.

Conclusion

This article discussed the application field and working principle of the FDS6910, a power MOSFET array from Fairchild Semiconductor. It is a versatile array, capable of handling high-current switching applications, class D amplifiers, and other high-speed switching tasks. Through its use of unipolar voltage signals to control its FETs, the FDS6910 is able to provide precise current control with minimal voltage changes, making it ideal for use in applications where fast response times and high accuracy are required.

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