ISL6334AIRZ

The ISL6334AIRZ is an integrated single-output, pulse-width modulation (PWM) controlled synchronous buck drain regulator. It is designed to operate from +3.3V to +15V power supplies, yielding outputs as low as 0.8V with peak currents of up to 16A. The package is an air cavity with a power pad arrangement that enables a low profile and optimal performance in an array of applications.

The ISL6334AIRZ is an excellent choice for powering processor cores in notebook computers, gaming systems, and industrial and business embedded applications. It features a programmable soft-start and supports programmable frequency using a resistor on the RT pin that sets the switching frequency from 0.3MHz to 3MHz. In addition, it offers high efficiency, fast transient response, and exceptional thermal performance.

Application Field of ISL6334AIRZ

The ISL6334AIRZ is specifically designed for powering processor cores in notebook computers, gaming systems, and industrial and business embedded applications. Its high efficiency, fast transient response, and exceptionally low power losses make this voltage regulator ideal for these and multiple other fields, including computing, broadcast equipment, test and measurement, and medical applications.

One of the outstanding traits of the ISL6334AIRZ is its high efficiency, leading to some impressive gains in energy efficiency. This is achieved through advanced low-RDSON MOSFETs, which enable more localized control of current and better thermal management. Additionally, the inclusion of power-optimization technology boosts efficiency even further, making this voltage regulator the perfect choice for applications which demand minimization of power consumption.

The ISL6334AIRZ features a programmable soft-start and supports programmable frequency using a resistor on the RT pin that sets the switching frequency from 0.3MHz to 3MHz. This makes it suitable for a range of applications, from automotive to consumer, industrial and medical systems.

Working Principle of ISL6334AIRZ

The ISL6334AIRZ is a synchronous buck drain regulator, which means it has two switching elements that regulate the output voltage. The two elements are the high-side switch, which controls the power-supply input, and the low-side switch, which controls the output current. The switching transistors may be P-channel MOSFETs, N-channel MOSFETs, or a combination of both.

When the power is applied, the high-side switch is driven first and then followed by the low-side switch. The difference between the high-side switch voltage and the output voltage is called the “ripple voltage”. This voltage is regulated to close the loop and maintain the output voltage.

The other aim of the ISL6334AIRZ is to ensure that the output current is within the maximum rated current. This is done by monitoring the output current via the current sense resistor. If the current is greater than the threshold set by the current limit setting, the high-side switch is opened and the output current is cut off.

The ISL6334AIRZ is also capable of managing inrush current at startup. This is done by controlling the rise time of the high-side switch to keep the current within the threshold.

Conclusion

The ISL6334AIRZ is an integrated single-output, PWM controlled synchronous buck drain regulator. It is designed to operate from +3.3V to +15V power supplies, yielding outputs as low as 0.8V with peak currents of up to 16A. This voltage regulator is the perfect choice for notebook computers, gaming systems, and industrial and business embedded applications due to its high efficiency, fast transient response, and exceptional thermal performance.