FOD8316R2 Isolators

Isolators - Gate Drivers

The FOD8316R2 is a dynamic digital isolator IC (Integrated Circuit) designed for gate driving of bipolar junction transistors (BJTs), insulated-gate bipolar transistors (IGBTs) or other switching elements in high-side and low-side arrangements. It features a wide range of input logic control and a wide operating supply voltage range, making it suitable for applications ranging from motor control to DC-DC converters. The FOD8316R2 isolator accepts digital logic input from devices such as microcontrollers, providing a bidirectional isolation channel to the switching device.

Application Field

The FOD8316R2 is designed to control and isolate signals from devices such as microcontrollers and other logic control devices. Its wide operating supply voltage range and low power consumption make it suitable for applications where noise disruptions must be minimized or where space is limited. Common applications include: motor control, AC relay control, industrial switch controllers, DC-DC converters, automotive power systems, and any other application where isolation is important for reliable operation. Additionally, the isolator can be used to protect logic circuits from high-frequency interference caused by switching elements.

Working Principle

The FOD8316R2 works by isolating digital logic signals between two circuits with its onboard integrated transformer. The input side of the isolator can accept a logic signal from a microcontroller or other logic device, and pass it to the output side of the isolator. The logic signal is converted from a digital signal to an analog signal in order to be transmitted across the isolator\'s transformer, and then converted back into digital form to control a BJT, IGBT, or other switching element. The output side of the isolator is protected from high-frequency interference as the analog signal is transformed to a more robust digital signal.

The FOD8316R2 also features a remote shutdown feature that allows the user to turn off the output devices without having to reset the whole system. This allows a user to easily configure a system to operate in a low-power state during periods of inactivity. It also helps to reduce the risk of damage caused by false triggers.

Conclusion

The FOD8316R2 is a low-power isolator designed to provide bidirectional isolation between a logic device and a switching element, such as a BJT or IGBT. Its wide operating supply voltage range and low power consumption make it ideal for applications in motor control, AC relay control, industrial switch controllers, DC-DC converters, automotive power systems, and any other application where noise disruption must be minimized. Additionally, the isolator protects the logic circuit from high-frequency interference and provides a remote shutdown feature for controlling a system in a low-power state.