SI8238AB-C-IS1

Rise / Fall Time (Typ):	12ns, 12ns (Max)
Approvals:	CQC, CSA, UR, VDE
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	6.5 V ~ 24 V
Voltage - Forward (Vf) (Typ):	--
Current - Peak Output:	4A
Current - Output High, Low:	2A, 4A
Series:	Automotive, AEC-Q100
Pulse Width Distortion (Max):	5.6ns
Propagation Delay tpLH / tpHL (Max):	60ns, 60ns
Common Mode Transient Immunity (Min):	20kV/µs
Voltage - Isolation:	2500Vrms
Number of Channels:	2
Technology:	Capacitive Coupling
Part Status:	Obsolete
Packaging:	Tube

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SI8238AB-C-IS1 Gate Drivers Overview

The SI8238AB-C-IS1 is a high performance optically-isolated gate driver for use in a wide range of applications. The device is used in a variety of circuits, including automotive, industrial, and aerospace applications. The SI8238AB-C-IS1 provides a single-channel, isolated gate driver with a low-voltage power supply range, enabling it to be used in a variety of applications. It has been designed to operate in both AC and DC circuits and has the capability to support high-current loads.

Applications and Features

The SI8238AB-C-IS1 is a high-performance optically-isolated gate driver. It is designed with an integrated optical isolation, enabling the device to protect the gate driver circuit from high voltage spikes. The device is suitable for automotive, industrial, and aerospace applications. The SI8238AB-C-IS1 can drive up to 1 A peak output current to the gate of the power switching device. The device has a high-frequency operation and low jitter while driving, featuring an adjustable deadtime.The features of the SI8238AB-C-IS1 include an adjustable delay, logic controlled sleep mode, SAE J 2578-compliant overvoltage protection with adjustable thresholds, and termination resistor input. The device contains an integrated error amplifier, enabling it to adjust the bias voltage for the switching device. Moreover, the device also features negative voltage input protection and positive voltage lock-out. The device also offers adjustable overvoltage protection and adjustable frequency.

Working Principle

The working principle of the SI8238AB-C-IS1 is based on the optical isolation principle. The device works by isolating the higher-voltage power supply from the lower-voltage control supply. An optically isolated gate driver works by transmitting the control signal through a light-emitting diode (LED) and photodiode pair. The light output from the LED travels through the gap between the diode pairs, allowing it to safely transmit the signal without any risk of shorting the two circuits. The device then amplifies the signal and drives the gate of the power switch. The device also offers the following features: adjustable on-time and off-time delays, logic controlled sleep mode, overvoltage protection with adjustable thresholds, and a termination resistor input. The overvoltage protection feature is designed to protect the device from overvoltage events. The adjustable frequency feature enables the user to easily adjust the frequency of the gate driver as per their individual requirements.

Conclusion

In conclusion, the SI8238AB-C-IS1 is a high-performance optically-isolated gate driver designed for a wide range of applications. The device features an adjustable delay, logic controlled sleep mode, SAE J 2578-compliant overvoltage protection with adjustable thresholds, and termination resistor input. It also has an adjustable frequency function which helps to easily adjust the frequency of the gate driver. The device is suitable for automotive, industrial, and aerospace applications as it is designed to protect the gate driver circuit from high voltage spikes.

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