EL7156CSZ-T7 Integrated Circuits (ICs)

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EL7156CSZ-T7 Application Field and Working Principle

EL7156CSZ-T7 is a low cost, high bandwidth gate driver for driving power MOSFETs and IGBTs. It is classified as belonging to PMIC - Gate Drivers. The EL7156CSZ-T7 is a single-channel, high-performance monolithic gate driver optimized for a wide range of intelligent, low-power, and low-cost applications such as communications, industrial, and home/consumer electronics.

The EL7156CSZ-T7 integrates a high-frequency internal bias regulator and an internal gate driver stage with independent inputs for shut-down, active high enable and active low disable. The device provides best-in-class transient and static performance, featuring an adjustable turn-on and turn-off slew rate, an adjustable maximum gate current limit and a fast, low-loss driver dead-time control. It also features an adjustable, short circuit current limit. The total power dissipation of the device is lower than 90 mW typical.

Feature:

• Wide Supply Voltage Range: +4.5V to +15V Single Supply Operation
• High Isolation Voltage: up to 17V
• High Speed Active High, Active Low, and Shutdown
• Integrated Driver Transformer and Latches
• Gate Driver Shutdown Time Selectable by User
• Inputs Compatible with Most Logic Families
• Low Loss Multi-Channel Driver
• Temperature Compensated Current Limit
• On-Board Thermal Protection
• High Frequency Bias Regulation
• Low Power Consumption

The working principle of EL7156CSZ-T7 is a 2-stage, driver-transformer gate driver with an independent enable (active high) and shutdown (active low) inputs for each channel. The top stage of the device contains a high-voltage level shifter which translates the logic level input signals into gate drive signals. The bottom stage contains the power MOSFET driver and the transformer which serves to isolate the control logic from the high voltage MOSFET. The device also contains an adjustable current limit and a predriver.

The primary function of the EL7156CSZ-T7 is to drive high voltage power MOSFETs and IGBTs in switching applications. The device is used to translate low level logic signals into high voltage drive signals that can interface to power MOSFET gate drivers. The device is capable of driving a wide range of power MOSFETs and IGBTs with up to 4A maximum peak current. The device includes a temperature sensing system which protects the device from over temperature conditions.

EL7156CSZ-T7 is suitable for different types of application, such as automotive, solar energy, industrial, communications, domestic, medical and consumer electronics.

Automotive applications: EL7156CSZ-T7 is ideal for use in automotive applications where a high bandwidth and low power gate drive is required. It is particularly suited for applications such as electric vehicles, fuel cells, hybrid vehicles and battery systems.

Solar energy applications: EL7156CSZ-T7 can be used in solar energy applications such as high power solar inverters, solar panel arrays, solar cell controllers and solar panel trackers.

Industrial applications: EL7156CSZ-T7 is suitable for use in industrial applications where high power control is required such as motor drives, lighting controllers and industrial inverters.

Communications applications: EL7156CSZ-T7 is suitable for use in telecommunications and networking applications such as base stations and central office switching systems.

Domestic applications: EL7156CSZ-T7 is also suitable for use in residential and commercial equipment in applications such as solar inverters, home security systems, and lighting controllers.

Medical applications: EL7156CSZ-T7 can be used in medical applications such as home monitoring and diagnostic equipment, patient monitors and medical robots.

Consumer electronics applications: EL7156CSZ-T7 is also suitable for use in consumer electronics such as video game consoles, guitar processors, set-top boxes and HDTVs.

In summary, EL7156CSZ-T7 is a highly integrated and reliable gate driver solution for driving a wide range of power MOSFETs and IGBTs. It offers best-in-class transient and static performance and good system stability. This device is a good fit for various applications such as automotive, solar energy, industrial, communications, domestic and consumer electronics where a low cost and high bandwidth gate driver is needed.

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