FAN8301MX Integrated Circuits (ICs)

Introduction

The FAN8301MX is a PMIC (power management integrated circuit) and a DC-DC switching regulator designed for high-performance and low-power operation applications. It features a compact size and wide temperature operating range. This makes it suitable for a variety of applications, including those in the industrial, medical, communications, and automotive arenas. In this article, we will discuss the application field, as well as the working principle, of the FAN8301MX.

Application Field

The FAN8301MX is suitable for a variety of low-power applications, including those in the industrial, medical, communications, and automotive sectors. This PMIC can be used in a variety of applications, including those that require high efficiency and low noise, such as data center and application server systems, power management solutions, and Ethernet switches.

The FAN8301MX can also be used in automotive applications, which require efficient power conversion and minimal heat generation. With a wide operating temperature range, the FAN8301MX can handle the challenging temperature environment seen in the automotive space. Additionally, the FAN8301MX can be used in wireless charging applications, where it can convert a universal input voltage into a wide, adjustable output voltage between 1.8V to 5.5V.

Working Principle

At its core, the FAN8301MX is a DC-DC switching regulator, meaning that it converts a source voltage DC voltage, such as 3.3V or 5V, into another DC voltage. This output voltage can be adjusted by changing the duty cycle of the control signal sent to the regulator. This process works according to the following working principle.

The input voltage is first filtered to remove high frequency noise. This filtered voltage is then fed into the switching module, where it is compared to an internal reference voltage. If the input voltage rises above the reference voltage, a positive logic control signal is sent to the FET (Field Effect Transistor), switching it on and allowing current to flow through the voltage regulator. As current flows through the regulator, a feedback voltage is generated, which is compared to the reference voltage in order to ensure that a stable output voltage is maintained.

The stability of the output voltage is further maintained by a cycle-by-cycle current limit. If the current drawn from the output of the FAN8301MX exceeds a predetermined amount, the FET is switched off, preventing the output voltage from dropping. This ensures that the output voltage remains within the predetermined tolerance.

Conclusion

The FAN8301MX is a highly versatile PMIC and DC-DC switching regulator designed for low-power, high-performance applications. It offers wide temperature operating range and a range of features which make it suitable for a number of different applications. Additionally, its working principle is based on simple switching and feedback methods, enabling it to provide stable output voltage with minimal power losses.