ISL8016IR25Z

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The PMIC, ISL8016IR25Z is a wide input adjusted, low input current, high performance DC-DC switching converter. It is suitable for portable or desktop applications and is capable of delivering up to 25A of output current, permitting conversion of DC voltages ranging from 3.3V to 24V. ISL8016IR25Z incorporates a power MOSFET, high frequency oscillator, voltage regulator, over current protection and thermal protection circuit, making it ideal for a wide range of applications such as notebook computers, LCD TVs and consumer applications.

ISL8016IR25Z Application Field

ISL8016IR25Z is commonly used in notebook computers and LCD TVs, as they require efficient power supplies to ensure the proper operation of components. This dual-channel DC-DC switching regulator is suitable for the wide range of input voltages needed by these applications, and offers high efficiency and fast response to the changing loads.

ISL8016IR25Z offers numerous advantages. Clearly, its wide range of input voltages eliminates the need for voltage adjusters and is perfect for applications where space is limited. Additionally, its small size and high power density allow it to integrate easily into space-constrained circuits.

The regulator also features short circuit protection by automatically shutting down output when an over current condition is detected. Additionally, the device features an operational temperature range of -40 degrees Celsius to +90 degrees Celsius and an additional junction temperature range of 0 - 125 degrees Celsius. This makes is suitable for extreme environmental conditions.

ISL8016IR25Z Working Principle

ISL8016IR25Z is based on the principle of DC-DC switching. It utilizes a buck regulator topology, which allows it to step down the voltage from the input to the desired output. The device is designed with two-stage switching to maximize the power efficiency of the system. The two stages are the main power stage, which is a synchronous rectifier, and the control stage, which is the controller.

The main power stage of the ISL8016IR25Z includes a synchronous rectifier and several driver transistors. The synchronous rectifier switch is connected to the input voltage and enables the flow of current between the input side and the output side of the power stage. The driver transistors control the timing of each pulse of the switch and regulate the amount of current flowing through it. The voltage across the output side of the power stage is regulated by the controller in the control stage.

The controller is responsible for regulating the output voltage of the regulator based on the input voltage. The controller adjusts the voltage drop of the power stage based on the differential between the input and output voltages. It also adjusts the duty cycle of the power stage to ensure that the output voltage remains as close to the desired output voltage as possible.

In addition to controlling the power stage, the controller also monitors the operation of the circuit and provides protection against potential faults in the system. It monitors the input current, output current, the input voltage, and the output voltage, and automatically shuts down output when an over-current or over-voltage condition is detected.

Conclusion

ISL8016IR25Z is an ideal choice for applications requiring an efficient power supply with a wide range of input voltages. Its high power density and fast response time make it suitable for a variety of applications where space is limited. Its built-in protections, such as short-circuit and over-current protection, make it safe and reliable for use in the most extreme conditions. By utilizing a two-stage switching regulator, ISL8016IR25Z offers high efficiency and allows for the transformation of DC voltages from 3.3V to 24V.

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