FAN6520BMX

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The FAN6520BMX is a DC DC switching controller that belongs to the family of PMICs (Power Management ICs). Designed by Fairchild Semiconductor, it is a voltage regulator capable of high power efficiency and low power loss that meets the tightest system requirements of modern power designs.

The FAN6520BMX is designed to be used in the power distribution systems of appliances, autonomous electric devices, and industrial, medical, and defense applications. It can be used to increase the power density of the entire system, enhance system reliability and cost-effectiveness, and optimize the structural resources of the control system.

The FAN6520BMX has a high frequency synchronous buck controller, which is capable of supplying 0.8A continuous output current from a 6V to 15V input, up to a 48V input. It has adjustable output voltage ranging from 0.8V to 5.5V, and is able to achieve up to 95% efficiency. It uses two phase and two switch synchronization control architecture, with a built-in internal oscillator, current sensing compensation, and cycle-by-cycle current limit for increased system reliability.

The FAN6520BMX also has a feature known as “EasySync”, which allows the user to quickly and easily synchronize the switching frequency without the need for an external oscillator. This feature allows users to modify the switching frequency to adapt to different loads, which increases the system\'s efficiency and improves the stability and reliability of the application. The FAN6520BMX also has a built-in digital, analog and mixed-mode digital control, with a 16-bit digital signal processor (DSP) that can be programmed to realize a wide range of intelligent behaviors.

The FAN6520BMX’s working principle is simple and straightforward. When the power supply is on and the voltage is above the regulating voltage, the current through the opto-isolated MOSFET is reduced, turning it off and allowing the power supply to start up. When the current is flowing, the voltage across the MOSFET increases, and the voltage regulator begins to regulate the output voltage. When the voltage rises above or drops below the target voltage, a feedback signal is sent to the FAN6520BMX, which turns on or off the MOSFET as needed to keep the output voltage steady at the desired value.

In summary, the FAN6520BMX is a powerful and efficient switch-mode DC DC controller that meets the application requirements of a wide range of applications and is designed to operate with minimum power loss, increased system reliability, and cost-effectiveness. It uses a high frequency synchronous buck controller, with adjustable output voltage, current sensing compensation and cycle-by-cycle current limit. It also features an EasySync function that removes the need for an external oscillator, and a 16-bit digital signal processor (DSP) for intelligent behaviors programming.

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