ADUM4121-1ARIZ

Current - Output High, Low:	--
Base Part Number:	ADUM4121
Approvals:	CSA, UR, VDE
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	4.5 V ~ 35 V
Voltage - Forward (Vf) (Typ):	--
Current - Peak Output:	2.3A
Series:	iCoupler®
Rise / Fall Time (Typ):	18ns, 18ns
Pulse Width Distortion (Max):	13ns
Propagation Delay tpLH / tpHL (Max):	42ns, 53ns
Common Mode Transient Immunity (Min):	150kV/µs
Voltage - Isolation:	5000Vrms
Number of Channels:	1
Technology:	Magnetic Coupling
Part Status:	Active
Packaging:	Tube

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ADUM4121-1ARIZ Isolators - Gate Drivers

The ADUM4121-1ARIZ is an isolated gate driver component manufactured by Analog Devices, Inc. Designed to drive high-current loads, the ADUM4121-1ARIZ provides superior isolation performance while maintaining extremely low power losses. Featuring a high voltage rating and a maximum drive current of up to 4A, this product can easily meet the current requirements of most applications.

Applications

The ADUM4121-1ARIZ can be used to drive high-current loads, such as high-power switches, relays, and power transistors in applications such as power converters, motor control, and high-side switches in automotive systems. It can also be used to isolate a control signal from an isolated supply, as well as providing noise immunity and transient protection for low-voltage applications.

Working Principle

The ADUM4121-1ARIZ is based on the principle of galvanic isolation, which provides complete electrical separation between two circuits while still allowing them to communicate with each other. The ADUM4121-1ARIZ uses an opto-coupler to optically couple the input signal, a high-voltage transformer to provide isolation, and a high-side driver to drive the output.The opto-coupler converts the input signal into an electrical current which is fed into the high-voltage transformer. The transformer steps up the current to a higher voltage that is then used to drive the output signal. The high-side driver is responsible for handling the high-voltage, high-current output. The ADUM4121-1ARIZ features integrated circuitry designed to provide over-voltage, over-temperature, and over-current protection for the system. This protects the device from damage caused by high-transient voltage spikes and current surges.

Conclusion

The ADUM4121-1ARIZ is an isolated gate driver component designed to drive high-current loads efficiently and reliably. Its integrated protection circuitry ensures the system will remain safe from hazardous conditions, and its high-voltage, high-current rating make it suitable for a range of applications. The device utilizes galvanic isolation to optically couple the input signal and to provide an isolated output, making it an effective solution for providing robust electrical isolation without sacrificing performance.

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