SI8235AB-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Part Status:	Obsolete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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Introduction

The SI8235AB-C-IS1 is anisolator for the gate drivers commonly used in electric vehicles and other motor-driven machines. This isolator provides isolation between two or more different interfaces, typically by means of an opto-coupler for maximum noise immunity. It allows current and voltage signals, logic signals, serial communications signals, and other types of signal to be safely transmitted from one side of the islation barrier to the other.

Application Field

The SI8235AB-C-IS1 can be used in a wide variety of applications, including:

• Semiconductor drive circuitry.
• Electric vehicle components.
• Robotic arms and industrial automation systems.
• Aerospace and defense.
• Medical equipment.
• Control systems.
• Wireless devices.

The SI8235AB-C-IS1 is well suited to motor control applications, as it offers a high level of isolation between the device\'s output and input stages. This enables the gate driver backplane voltage to be isolated from the low voltages used to operate the motor control circuitry. Additionally, this isolator offers increased protection against Electro Magnetic Interference (EMI).

Working Principle

The basic principle behind the operation of the SI8235AB-C-IS1 is simple. A light-emitting diode (LED) is used to transmit a signal from the input side to the output side, where a light sensitive transistor (LST) detects the signal and amplifies it. The output side of the LST is then passed through an opto-coupler\'s integrated circuit (IC) and a voltage regulator before the signal is passed to the output. The isolation is made possible by the opto-coupler\'s IC, which acts as a barrier between the input and output stages. This barrier significantly reduces the possibility of high frequency noise or electrical transients from being transmitted from one side to the other. The voltage regulator also helps to ensure that the accuracy of the output signal is maintained over a wide range of temperatures and voltages.

Conclusion

The SI8235AB-C-IS1 gate driver isolator is suitable for a wide range of motor-driven applications, thanks to its high level of isolation and its accuracy in signal transmission. The simple working principle and design of the isolator make it an ideal choice for many applications.

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