FAN48615UC08X

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FAN48615UC08X Application Field and Working Principle

FAN48615UC08X is a highly integrated single-chip DC/DC converter IC that belongs to the power management integrated circuit (PMIC) family. It’s integrated with a switching regulator, an output driver and a protection circuitry, allowing it to have a wide range of application fields as an efficient DC/DC converter. It guarantee reliable output power because of its over-voltage protection, over-current protection, over-temperature protection, soft start, and short circuit protection.

Application Fields

FAN48615UC08X is mainly suitable for general power converters in industrial and consumer products, like Internet of Things (IoT) products, mobile phones, tablets, and other mobile devices, digital cameras, thin-client products, and remote monitoring equipment.

Working Principle

The working principle of FAN48615UC08X is that it uses two transistors to build a two-stage buck converter as the power electronic part. Then an analog current mode controller and a fast over-current comparator, both with digital control functions, are connected to the power electronic part, establishing a system with digital control, analog current sense and analog voltage feedback.

To ensure the stability of the circuit, the feedback control loop is constructed. Any changes in the output voltage are sensed by the voltage feedback circuit and generate a control signal that adjusts the ON period to optimize the power conversion efficiency. This control loop allows the FAN48615UC08X to dynamically and quickly responds to Voltage fluctuations and temperature.

The primary output voltage of FAN48615UC08X can be between 1.2V and 5V, the secondary output voltage can be between 1.2V and 3.3V. Its extreme small output ripple voltage, low current consumption and fast active time makes it much preferred as a DC/DC converter.

Conclusion

FAN48615UC08X is a single-chip DC/DC converter IC that belongs to the power management integrated circuit (PMIC) family, mainly suitable for general power converters. It uses two transistors to build a two-stage buck converter as the power electronic part and an analog current mode controller and a fast over-current comparator as the digital control system. Its extreme small output ripple voltage, low current consumption, fast active time and wide range of application fields make it much preferred as a DC/DC converter.

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