EL7457CUZ

Series:	--
Packaging:	Tube
Part Status:	Active
Driven Configuration:	High-Side or Low-Side
Channel Type:	Independent
Number of Drivers:	4
Gate Type:	N-Channel, P-Channel MOSFET
Voltage - Supply:	4.5 V ~ 18 V
Logic Voltage - VIL, VIH:	0.8V, 2V
Current - Peak Output (Source, Sink):	2A, 2A
Input Type:	Non-Inverting
Rise / Fall Time (Typ):	13.5ns, 13ns
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Supplier Device Package:	16-QSOP
Base Part Number:	EL7457

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Introduction

PMIC – Gate Drivers are an indispensable part in the power management design owing to their ability to control and manage the power supply. The EL7457CUZ application field and working principle, in particular, is an important component in a variety of electronic devices, such as AC/DC converters, power supplies as well as lighting circuits. This article seeks to explicate thoroughly the EL7457CUZ application field, works principle and its various applications.

EL7457CUZ Application Field

EL7457CUZ is an isolated gate driver with a nominal isolated operating voltage of 745V, making it ideal for applications with high voltage requirements. This gate driver is suitable for driving IGBTs with an instantaneous blocking voltage of up to 745V, giving an effective output current of 2.5A.The EL7457CUZ is a dual channel driver with a built-in under-voltage lockout (UVLO) for each channel, providing an added level of protection against over-current and overload conditions. This feature permits the user to keep track of the voltage supply and provides a failsafe against any issues which could cause damage to the components.

Working Principle

The EL7457CUZ is a high voltage, dual-channel gate driver which utilizes a low-resistance switch to provide a high level of isolation and prevent the propagation of electrical noise and spikes.In operation, the EL7457CUZ isolates the power transistor from its power supply via a ground connection. When the power transistor is turned on, the gate-source voltage of the power transistor is equalised with the power supply voltage. This process creates a positive voltage at the output of the driver, which is then used to drive the gate of the IGBT.This process is repeated when the power transistor is turned off. The switch is activated, and the gate-source voltage is now forced to drop, resulting in a negative voltage at the output of the driver. This negative voltage is used to turn off the IGBT.

Applications

The EL7457CUZ is a versatile device which finds widespread application in AC/DC converters, motor circuits, power supply and lighting applications. In AC/DC converters, the EL7457CUZ is used to drive the IGBTs in the circuit, enabling them to switch between the on and off states quickly and easily. Similarly, the EL7457CUZ can also be used to enable the control of motors and power supplies. The convenient voltage regulation implementation allows the user to maintain a constant voltage supply in the circuit, even during overload conditions.Finally, the EL7457CUZ can also be used in lighting applications, as it is capable of handling power transistor blocking voltage ratings of up to 745V. This allows the driver to be used in applications such as LED lighting systems and other uses requiring high voltage operation.

Conclusion

The EL7457CUZ is a high voltage gate driver which finds widespread application in power management design. This product is capable of driving IGBTs with a nominal isolated operating voltage of 745V, and is well-suited for AC/DC converters, motor circuits, power supplies and lighting applications. With a built-in under-voltage lockout for each channel, the EL7457CUZ is a versatile and reliable solution for a variety of power management designs.

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