ISL6527CR-T

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Pericom Semiconductor\'s ISL6527CR-T is a high performance, integrated forward or flyback Pulse-Width-Modulation (PWM) DC-DC switching controller with integrated high voltage MOSFET driver. It is typically used in LED lighting and telecom power management applications, including LED lighting, CRT monitors, DC-DC converters and UPS systems. Based on its wide input voltage range of 8 to 75V, this controller is able to easily compliant with a vigorous range of commercial and industrial applications.

Application Field

The ISL6527CR-T can be used in a number of fields including LED backlighting, DC-DC converters, ON/OFF power boxes, open frame OCP, CRT monitors and UPS systems. In LED lighting applications, this part offers an on-chip emulated current source and also provides an advanced regulated bus voltage, which makes it suitable for a wide range of applications that demand constant light output and uniform illumination.

Working Principle

The working principle of the ISL6527CR-T is based on Pulse-Width-Modulation (PWM) and integrated high voltage MOSFET driver. When the system is powered up, the PWM controller requests power from the power supply. When taken, the PWM controller then adjusts the duty cycle. This PWM signal is then used to drive the internal high voltage MOSFETs that manage the LED lighting current and also manage the input supply\'s varying load conditions. Moreover, the ISL6527CR-T offers an adjustable overvoltage protection circuit, which helps safeguard the system from incoming failure. This circuit allows the system to sense immediate peaks in the input voltage and respond accordingly by pulling down the operating voltage.

Conclusion

The ISL6527CR-T PWM switching controller is an ideal choice for various commercial and industrial applications due to its wide input voltage range. It is a highly versatile and reliable switch mode power supply solution with excellent current Source/Sink capability. This part is also capable of handling varying load conditions and also employs an adjustable overvoltage protection circuit, which helps protect the system in case of a sudden voltage peak.

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