SI8231AB-D-ISR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The SI8231AB-D-ISR is an isolator integrated circuit (IC) that offers protection solutions for applications using isolated gate drive circuits. This IC provides isolation up to 8kV peak, which is especially suitable for low-voltage domains using high-side switch drivers. With a high-speed PWM, the SI8231AB-D-ISR is capable of providing high-current drive capability with low losses and a high response time. In addition, the device also features a current-limiting circuit that prevents any overcurrent during the on-state.

Application Field

The SI8231AB-D-ISR is a great solution for various power switching applications and is widely used in the automotive industry. It is especially suitable for motors, solenoids, and hydraulic pumps. It can also be used in medical, LED lighting, and industrial applications. With its high peak voltage of 8kV, it provides excellent isolation in applications that are running on the high side of the circuit.

Working Principle

The SI8231AB-D-ISR consists of an integrated circuit (IC), two capacitors (C1, C2), two resistors (R1, R2), an open-drain output, and complimentary inputs. The integrated circuit provides power path isolation between the input and output power paths. This isolator circuit works in three phases starting with the preparation phase, switching phase, and monitoring phase.

In the preparation phase, the integrated circuit provides a high-voltage level that allows the capacitors to charge up to the maximum drive voltage. The capacitors can then supply the needed voltage to the output stage. In the switching phase, the complementary inputs control the open drain output which enables the power switching. The monitored phase then falls back to the preparation phase when the input is disabled. This feature ensures the reliable and safe operation of the SI8231AB-D-ISR isolator.

Conclusion

The SI8231AB-D-ISR is an isolator integrated circuit that provides high-speed operation with low losses and a fast response time. With its 8kV peak voltage, it is a great solution for applications requiring high-side switch drivers. The device also features current limiting and monitoring capabilities which offer reliable and safe operation. As such, it is ideal for various power switching applications in the automotive, medical, LED lighting, and industrial fields.

The specific data is subject to PDF, and the above content is for reference