ISL89161FBEBZ-T

Logic Voltage - VIL, VIH:	1.85V, 3.15V
Base Part Number:	ISL89161
Supplier Device Package:	8-SOIC-EP
Package / Case:	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Rise / Fall Time (Typ):	20ns, 20ns
Input Type:	Inverting
Current - Peak Output (Source, Sink):	6A, 6A
Series:	--
Voltage - Supply:	4.5 V ~ 16 V
Gate Type:	N-Channel MOSFET
Number of Drivers:	2
Channel Type:	Independent
Driven Configuration:	Low-Side
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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ISL89161FBEBZ-T is a cost-effective, 5V High-Speed Gate Driver for Driving N-channel MOSFETs, which integrates the highly configurable gate driver controller and PWM control outputs for pace and current modulation. It is specifically designed for high-performance applications such as automotive, industrial and telecom applications. This Gate driver combines the best features of PWM and linear gate drivers to provide excellent performance.

Application Field

ISL89161FBEBZ-T gate drivers are used in a wide variety of applications including power supplies, motor control, low-side gate drivers, high side gate drivers, and LED drivers. It is especially useful for applications that require accurate current and voltage control. It is also used in automotive and industrial applications where it provides reliable and efficient gate driving.ISL89161FBEBZ-T gate drivers can be used in a variety of applications such as buck converters, synchronous rectifier systems, LLC converters, buck-boostn converters, buck-boost converters and Class D amplifiers. It is also used in DC-DC power supplies and LED lighting systems.

Working Principle

The basic working principle of ISL89161FBEBZ-T gate driver is to provide a high control voltage to the gate of the N-channel MOSFET. This is done by using a high-frequency signal, called the PWM (Pulse-Width Modulation) signal, which is generated from the MOSFET driver IC. The signal is transmitted through a low-inductance transmission line to the MOSFET, which then amplifies the signal and drives the gate of the MOSFET.The controller of the ISL89161FBEBZ-T offers a programmable gain control which can be adjusted to increase the control signal\'s capability to drive the gate of the MOSFET. It also has a slew rate control which can be adjusted to control the amount of current being supplied to the gate of the MOSFET.When the Gate driver receives the PWM signal, it amplifies it, adding the gain control as configured, and then drives the gate of the MOSFET. The output voltage is then regulated through the voltageloop control and is output to the gate of the MOSFET.The ISL89161FBEBZ-T Gate Driver also features a PWM-Lite mode, which is a low-cost PWM control for LED dimming applications. This mode reduces the output frequency to an average of between 1 kHz and 32 kHz, depending on the application requirements. This mode eliminates the need for an external PWM generator, saving cost and simplifying the application.A temperatureProtect feature is also built into the ISL89161FBEBZ-T gate driver, which monitors the junction temperature of the MOSFET and limits the current to the gate if thetemperature rises above a set threshold. This feature ensures that the gate of the MOSFET is protected against thermal runaway.In conclusion, ISL89161FBEBZ-T gate drivers are extremely useful for a variety of applications ranging from power supplies to motor control and LED lighting systems. It offers excellent performance and is cost-effective when compared to other gate driver designs. These gate drivers combine the best features of PWM and linear gate drivers and offer a comprehensive set of features that enable efficient gate driving.

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