SI8273AB-IMR

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

Isolators are essential components in electronic systems, protecting circuitry and personnel from electric shock while simultaneously allowing signal passages between the input source and the output load. Gate drivers are used when the load requires greater transmittance such as thyristors and other switching devices. One type of isolator-gate driver combination is the SI8273AB-IMR, an opto-isolator with an integrated gate driver which offers a range of benefits for a diverse range of applications. This article reviews the applications and working principles of the SI8273AB-IMR.

The SI8273AB-IMR features 5 mA/2kV isolation between the input and output, sufficient for multiple applications in industrial electronics. The compact form factor of the device is an added benefit, reducing the overall system size as compared to using an isolator and gate driver combination. The combination of an internal optical coupler and MOSFET form a compact and reliable power package. The design is available in both surface mount (SMD) and through hole (TH) packages, while the superior thermal performance prevents destruction of the device due to operating temperatures.

The SI8273AB-IMR is designed for use in a variety of applications, including motor drives for industrial systems, pump systems, DC-DC inverters, On/Off switches, and more. The module is commonly used in energy meter applications to connect the meter to the main power line. The internal optical coupler provides noise immunity and protection against high voltage spikes, while the gate drivers ensure high speed switching of the connected load. The drive current of the module is adjustable, and can be set to drive up to 500mA at up to 20V.

The SI8273AB-IMR isolator-gate driver module works in two stages. The optical coupler isolates the input from the output, preventing the low voltage/low current section from energizing the high voltage/high current parts. The integrated MOSFET gate driver is then used to switch on and off the MOSFET, providing the amplification of the input signal needed to switch the load on and off. The MOSFET gate driver is fully protected against overvoltage and overcurrent conditions, and can be driven either with an internal or external pulse transformer. Due to the low on-resistance of the MOSFET, switching losses are minimized.

In conclusion, the SI8273AB-IMR is an ideal solution for isolation and protection in a variety of applications due to its low on-resistance, high switching speed, adjustable current rating, and compact form factor. The combination of the optical coupler and MOSFET gate driver allows for noise immunity and improved safety in hazardous environments. As a complete, self-contained module, the SI8273AB-IMR allows for simplified system design, and the ability to switch up to 500mA at up to 20V makes it suitable for a wide range of industrial applications.

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