SI8274AB4D-IMR

Rise / Fall Time (Typ):	10.5ns, 13.3ns
Approvals:	CQC, CSA, UR, VDE
Supplier Device Package:	14-LGA (5x5)
Package / Case:	14-VFLGA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	4.6 V ~ 30 V
Voltage - Forward (Vf) (Typ):	--
Current - Peak Output:	4A
Current - Output High, Low:	1.8A, 4A
Series:	Automotive, AEC-Q100
Pulse Width Distortion (Max):	47ns
Propagation Delay tpLH / tpHL (Max):	105ns, 75ns
Common Mode Transient Immunity (Min):	200kV/µs
Voltage - Isolation:	2500Vrms
Number of Channels:	2
Technology:	Capacitive Coupling
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Isolators - Gate Drivers: SI8274AB4D-IMR Application Field and Working PrincipleThe SI8274AB4D-IMR is an Isolator-Gate Driver designed by Silicon Laboratories to provide maximum flexibility and optimal performance across many applications. This product is designed to provide an isolated DC voltage of up to 15V for driving various power module or transistor embodiments. It is also suitable for driving both MOSFETs and non-MOSFETs, and its intrinsic isolation provides electrical isolation to the driven device.The SI8274AB4D-IMR is ideal for a variety of applications. It is commonly used in military, aerospace, and industrial applications and is suitable for use in harsh environments. It is suitable for use in motor control, high voltage regulation, switch mode power supply (SMPS) applications, and telecommunications. It can also be used in automotive and medical applications because it offers reliable operation over a wide temperature range.The SI8274AB4D-IMR is designed to provide maximum flexibility and superior performance across many applications. It has a wide input voltage range of 4.5V to 15V and provides a maximum switching speed of 1 MHz. Its intrinsic isolation provides electrical isolation to the driven device, eliminating the need for additional isolation for the application. The SI8274AB4D-IMR also offers a wide range of features, including a selectable supply voltage of either 3.3V or 5V, adjustable maximum current limit, adjustable deadtime for dual-channel driver, adjustable minimum turn-on pulsewidth, and adjustable PWM frequency for pulse-width modulation (PWM) mode.The working principle behind the SI8274AB4D-IMR is based on an AC-to-DC transformer. When a DC input voltage is applied to the gate driver, the transformer converts the DC voltage to an AC voltage which is then sent to the load switch. The load switch then converts this AC voltage to a DC output voltage, which is then applied to the controlled device.This DC output voltage then drives the power MOSFET or its equivalent. The SI8274AB4D-IMR also features thermal shutdown which allows it to shut down in the event of an over-temperature condition. This ensures that the device and its associated components are protected from damage.In conclusion, the SI8274AB4D-IMR is a powerful and reliable Isolator-Gate Driver designed for many industrial, commercial and medical applications. It is designed to provide high performance, reliable operation and maximum flexibility. Its AC-to-DC transformer provides electrical isolation to the controlled device, eliminating the need for additional isolation. Its thermal shutdown feature ensures that the device and its associated components are protected from damage.

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