SI8235BB-D-IS

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Isolators, also known as optocouplers, have been used for electrical isolation between two circuits for many years. Such devices usually require high voltage isolation to prevent electrical shock and potential physical damage. The SI8235BB-D-IS is a high voltage isolator, designed specifically for gate drivers, which can provide up to 5 kV (5.000 V) of electrical isolation. This is higher than the typical isolator ratings and provides a significant safety margin for circuits connected to it.

The SI8235BB-D-IS is designed for gate driver applications, providing electrical isolation between the gate driver and the powered device. It features integrated sense line protection, short-circuit protection, and low quiescent current. The device is RoHS compliant, and is available in an 8-solder pad package. In addition, the device also features a low-voltage fail-safe (LVFS) function, which keeps the gate driver output low in the event of an undervoltage or overvoltage condition.

The SI8235BB-D-IS can operate across a wide range of supply voltages, from 4.0V to 35V. The device includes an on-board power supply, which ensures that the output voltage remains within the specified limits even when the input voltages fluctuate. It is designed for applications such as DC-DC converters, robotics, welding, and HVAC.

In terms of its working principle, the SI8235BB-D-IS operates on the principle of electrical isolation between the input and output. This is done by means of LEDs on the isolator that light up when a signal is applied at the input. This signal is then picked up by photodetectors on the output side of the isolator, which activate the output. The isolation between the input and output is maintained by the barrier of the LEDs and photodetectors, and provides electrical isolation up to 5 kV.

The SI8235BB-D-IS has been designed to provide excellent performance in terms of EMI/RFI resistance, low power consumption, fast response time, and high reliability. It is suitable for applications requiring electrical isolation between low voltage and high voltage systems.

The SI8235BB-D-IS is an optimal choice for gate driver applications, offering excellent electrical isolation with its 5 kV rating, along with its integrated features which protect the device from damage due to power disturbances. Its wide range of supply voltage range and integrated low-voltage fail-safe function make the SI8235BB-D-IS the ideal choice for DC-DC converters, robotics, welding, and HVAC systems.

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