ZL2105ALNFT

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The ZL2105ALNFT is a high performance synchronous Multi-Phase buck DC/DC converter that provides outstanding power conversion efficiency and cycle-by-cycle current monitoring over a wide voltage range. Multi-phase buck converters enable higher power conversion efficiency than a single-phase solution with the same output current rating. The ZL2105ALNFT also provides adjustable slew rate control, programmable power good output voltage and an adjustable constant frequency synchronous control, Both these features and the high efficiency enable it to be used in many applications, such as computing and networking, server, storage, digital display, and more.

The ZL2105ALNFT is configured as a 4-phase buck DC/DC converter with integrated power MOSFETs. It requires a minimum current sense resistor to provide real-time current monitoring for every switch cycle for each phase. It also has programmable soft start and adjustable constant frequency control in order to provide constant current output from different load conditions. In addition, the ZL2105ALNFT features an adjustable slew rate control to minimize output voltage transients and an internal power good signal when an input voltage is below the output voltage.

The main features of the ZL2105ALNFT include an adjustable output voltage range of 0.5V to 5.5V, adjustable input voltage range of 4.25V to 24V, adjustable output current rating of up to 25A and high available power of up to 300W. The device also has a high efficiency rating of up to 96%, a T˜Jmax rating of +125°C, and a wide operating temperature range of -40°C to +125°C.

In terms of its applications, the ZL2105ALNFT is suited for a wide range of applications, such as computing, networking, server, storage, digital display, and more. It’s also suitable for mobile and embedded applications, especially where efficiency and size are key considerations. In these types of applications, the high efficiency of the ZL2105ALNFT makes it an ideal choice.

The working principle of the ZL2105ALNFT is based on synchronous buck DC/DC conversion. It is a four-phase buck converter with integrated MOSFETs. In each phase, the current sense resistor senses the drain current of the MOSFET and provides real-time current monitoring for each switch cycle. The MOSFETs are controlled by an adjustable constant frequency PWM control, which provides a constant current output despite different load conditions.

Additionally, a programmable soft start function and adjustable slew rate control are included to minimize output voltage transients and minimize the output voltage transition time. An internal power good signal is generated by the device when the input voltage is below the output voltage. The ZL2105ALNFT also has programmable HS and LS overcurrent protection and thermal shutdown protection to protect the device from over current, over temperature, and short circuit fault conditions.

In conclusion, the ZL2105ALNFT is a high performance multi-phase synchronous buck DC/DC converter with integrated power MOSFETs. It has a wide voltage range and adjustable output current and can handle up to 300W of available power. It is suitable for a wide array of applications including computing, networking, server, storage, digital display, and more. It’s also well-suited for mobile and embedded applications, especially where efficiency and size are key considerations. The ZL2105ALNFT applies a synchronous buck DC/DC conversion, with current sense resistors in each phase and adjustable frequency PWM, soft start, and slew rate control to provide real-time current monitoring and smoother voltage transition times.

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