AGB75LC04-BG-E Application Field and Working Principle

AGB75LC04-BG-E belongs to the Specialized ICs category. It is an advanced low-voltage integrated circuit (IC) designed for powering a variety of applications and systems. It integrates a switching regulator IC and three-phase Buck Controller and is capable of generating output voltages as low as 0.25 volts from a single input supply.

The AGB75LC04-BG-E uses a three-phase topology to provide a low-ripple,highly accurate output voltage. The integrated FETs switch power to the output and regulate the output voltage by sensing the voltage on the output and making adjustments accordingly. The switching frequency is adjustable, and the maximum switching frequency is limited to ensure minimal noise and EMI levels. The device also features an adjustable soft-start circuit which helps to reduce inrush current at start-up.

The main features of the AGB75LC04-BG-E include overcurrent protection, overvoltage protection, undervoltage lockout, thermal protection, current mode control, and integrated loop compensator. These features make the AGB75LC04-BG-E suitable for a wide range of applications including: personal computers, servers, graphics cards, industrial control systems, telecom systems, home entertainment systems, and audio/video systems. The device can also be operated as a stand-alone regulator for powering small loads efficiently.

Working Principle

The AGB75LC04-BG-E operates on a three-phase topology to provide a low-ripple, highly accurate output voltage. The integrated FETs switch power to the output, and the voltage is regulated by sensing the voltage on the output and making adjustments accordingly. The switching frequency can be set to a maximum frequency of 25kHz, and the switching frequency can be adjusted. The device also features an adjustable soft-start circuit, which helps to reduce inrush current at start-up.

The AGB75LC04-BG-E operates via the power switch control principle. This means that the output voltage is controlled by a feedback loop which senses the output voltage and adjusts the switching frequency accordingly. The output voltage is determined by the input voltage and the number of phases. When the input voltage is increased, the output voltage will also increase. The output voltage is adjusted by adjusting the operating frequency, which can be adjusted from 25kHz to 50kHz. The operating frequency is changed by adjusting the on-time of the power switch.

The AGB75LC04-BG-E is rated to handle up to 50A in continuous operation, while achieving an efficiency of up to 90%. The device also features overcurrent protection, overvoltage protection, undervoltage lockout, thermal protection, current mode control, and integrated loop compensator. These features ensure robust and reliable operation in a wide range of applications.

Conclusion

The AGB75LC04-BG-E is a specialized IC designed for powering a variety of applications and systems. It incorporates a three-phase topology to provide a low-ripple, highly accurate output voltage and is suitable for powering a range of applications, from PCs and servers to audio/video systems. The device has several features which enable it to provide robust and reliable operation, including overcurrent protection, overvoltage protection, undervoltage lockout, thermal protection, current mode control, and integrated loop compensator. The AGB75LC04-BG-E is an excellent choice for powering a wide range of applications.