ISL6224CAZ-T

ISL6224CAZ-T Application Field and Working Principle

The ISL6224CAZ-T is a integrated DC/DC switching regulator controller IC that provides the control circuitry necessary to implement a single-ended primary-inductor type switching regulator. It combines high output accuracy and wide input voltage range capability. It can operate from an input voltage of 4V and provides an adjustable output voltage range from 0.8V to 12V with ±0.5% accuracy.

Features of the ISL6224CAZ-T include a wide input voltage range, multiphase operation, programmable output current limit, and a low on-resistance power MOSFET. The device also includes a built-in ramp generator and soft-start circuit, as well as integrated synchronization and Multi-Cycle Logic (MCL) capabilities. In addition, the device provides protection circuits including under-voltage lockout, over-voltage protection, overcurrent protection, thermal shutdown, and over-temperature protection.

ISL6224CAZ-T Application Field

The ISL6224CAZ-T is ideal for applications that require high accuracy, low power, and small size. These applications include on-board power, notebook computer power supplies, server and telecom power supplies, point-of-load converters, and battery-chargers. It is also suitable for automotive applications such as USB power in-vehicle power systems.

ISL6224CAZ-T Working Principle

The working principle of the ISL6224CAZ-T is based on the fact that it uses an integrated switching regulator controller IC to provide the control circuitry necessary to implement a single-ended primary-inductor type switching regulator. The operating principle of the ISL6224CAZ-T is as follows.

• The controller IC first measures the input voltage and produces a control signal based on the measured voltage.
• The control signal is then used to turn on the power MOSFET switch located between the input and output of the switching regulator.
• When the power MOSFET switch is turned on, current flows through the primary side of the inductor and the voltage across the inductor rises.
• The rising voltage across the inductor is then used to charge the output capacitor to the desired voltage.
• The power MOSFET switch is then turned off and the current flowing through the inductor will flow through the load.

The ISL6224CAZ-T integrates several features that allow it to be programmed to provide the desired output voltage, current limit and other parameters. The device is also protected from over-voltage, over-current, and thermal conditions.

The ISL6224CAZ-T is a high accuracy and low power solution that provides the advantages of a single-ended primary-inductor type switching regulator in a compact package. It is ideal for applications where high output accuracy, low power, and a small size are required.