EL7222CS

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

EL7222CS application field and working principle

The EL7222CS is a monolithic dual low-side gate-driver IC from Eupec. The device is a combination of two low side gate driver outputs, specifically used to control high-side power MOSFETs and low-side power MOSFETs in power supplies with a low-side-floating topology. The device has an integrated start-up and shutdown control. The EL7222CS is designed for use in high-performance and low-cost applications, such as automotive and industrial power supplies.

Application fields

The EL7222CS is suitable for driving power MOSFETs from 12V to 45V, as well as driving other types of high-power components such as IGBTs and Thyristors. It can be used in switch-mode power supplies (SMPS) with low-side-floating topology, such as flyback, quasi-resonant or half-bridge, as well as in motor drivers and DC-DC converters. The device is also suitable for various automotive systems, such as electronic throttle control (ETC) and the electronic power steering (EPS) system.

Architecture of EL7222CS

The EL7222CS consists of three main functional blocks: two high-side gate drivers with integrated failure-LED drivers, and a low-side switching module. Both the high side drivers and the low side switching module are controlled by the Start/Stop Control input. The Start/Stop Control input can be driven by either a pushbutton switch, or by a PWM signal. The Start/Stop Control input also has a shutdown / tachometer input and a power fail detection functionality.

The low-side switching module consists of two N-channel power MOSFETs and their associated circuitry. The two N-Channel power MOSFETs are controlled by the Start/Stop Control input from the Start/Stop Control input. This module also has integrated short-circuit protection, thermal shutdown and overtemperature protection. The low-side switching module is designed to deactivate the power MOSFETs in case of a fault condition.

Working Principle

When the Start/Stop Control input is enabled, the two high-side gate drivers in the EL7222CS drive the power MOSFETs in the low-side switching module. Both the high-side gate drivers and the low-side switching module are powered by an external power supply. When the Start/Stop Control input is disabled, the power MOSFETs in the low-side switching module are disabled, and the power to the high-side gate drivers is removed. This ensures that both the high side and the low side are safely disconnected from the external power supply.

The EL7222CS also includes an integrated failure-LED driver, which is enabled by the Start/Stop Control input. When the low-side switching module is active, the failure-LED driver will drive an external LED, informing the user of a power-failure or fault state in the system.

The EL7222CS is designed to operate at a temperature range from -40°C to +85°C, and has an integrated over-temperature and short-circuit protection circuit. The device is also designed to support the most common bus-voltage range from 9V to 17V.

Conclusion

In summary, the EL7222CS is a dual low-side gate-driver IC from Eupec, which can be used in various automotive and industrial applications. The device has an integrated start-up and shutdown control and includes an integrated failure-LED driver. The EL7222CS is designed for use in high-performance and low-cost applications, and can be used to drive power MOSFETs from 12V to 45V. The EL7222CS is a cost-effective solution for driving various high-power components such as IGBTs and Thyristors.

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