ISL6522BIRZ-TK

Frequency - Switching:	200kHz
Base Part Number:	ISL6522B
Supplier Device Package:	16-QFN-EP (5x5)
Package / Case:	16-VQFN Exposed Pad
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable, Frequency Control, Phase Control, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	100%
Series:	--
Voltage - Supply (Vcc/Vdd):	10.8 V ~ 13.2 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The ISL6522BIRZ-TK is a DC to DC switch controller designed by Intersil Corporation. It is a member of the highly innovative ISL6522 series of devices which are designed to control the switching of synchronous regulators. It utilizes the latest power topology to provide increased efficiency and provide higher voltage outputs. As with all other switching controllers, it provides a current-mode control that allows for dynamic adjustment of the current and voltage levels for optimal efficiency.

Application Field

The ISL6522BIRZ-TK is suitable for a wide range of applications from industrial to consumer electronics. It is highly suited for use in high-current, high-efficiency converters. It is especially popular in notebook computers and other portable devices due to its small size and efficient operation. It is also popular in industrial applications and power converters as it provides high reliability, low noise operation and robust protection features.

Working Principle

The ISL6522BIRZ-TK utilizes a current-mode technique to control the switching of the synchronous regulators. This technique provides accurate signal transfer between the controller and the regulator and keeps the system running in a stable and efficient manner. When the input voltage exceeds the set threshold, the controller begins the switching process. The controller then compares the sensed output from the regulator to its reference voltage to maintain the voltage of the output within the required specification. The controller provides a number of different features for protection and flexibility including a fault signal, soft start, over-voltage protection, under-voltage protection and over-temperature protection.

Conclusion

The ISL6522BIRZ-TK is a highly efficient DC to DC switch controller designed by Intersil Corporation. It is suitable for use in many different application fields from industrial to consumer electronics. The controller utilizes a current-mode technique to control the switching of the synchronous regulators which provides accurate signal transfer between the controller and the regulator. It also provides several protection features and a fault signal which provide reliability and robust operation.

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