MC34VR500V7ES

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PMIC stands for Power Management Integrated Circuit and is used to manage electrical power in electronic circuits. MC34VR500V7ES is a three-phase PFC boost controller specially designed by ON Semiconductor for application in the fields of server power supplies, industrial power supplies, and renewable energy systems. It helps design a power management system that can accurately regulate output voltage and current, protect components from overvoltage and current, and minimize the waste of energy. The MC34VR500V7ES provides the necessary power management functionality for a wide range of applications.

MC34VR500V7ES Application Field

The MC34VR500V7ES is a three-phase boost PFC controller designed primarily for server power supplies, industrial power supplies, and renewable energy systems. Its features include a high-performance voltage regulator loop and a synchronous PWM buck-boost detector built-in, as well as current mode, frequency foldback, and cycle-by-cycle peak current limit protection. It also features current foldback and undervoltage detection voltage protection, enabling the system to guarantee a safe and reliable operation even in the event of excessive load requirements.

Its multiple housekeeping functions make up a good system-level protection, including positive temperature coefficient (PTC) overload protection, undervoltage lockout (UVLO), open loop detector, and cycle-by-cycle peak current limit protection.

The MC34VR500V7ES has been designed for use in high power applications, making it a perfect solution for various industrial, commercial and residential applications, such as server power supplies, industrial power supplies, outdoor lighting, solar systems, and renewable energy systems. It can also be used as a high-efficiency voltage regulator for a variety of other power management applications.

MC34VR500V7ES Working Principle

The MC34VR500V7ES operates with a three-phase bridge full bridge structure to achieve over 98% efficiency. Power is supplied to the three-phase bridge rectified power by an external power supply. The voltage is then regulated by an external adjustable voltage regulator and a set of feedback resistors.

The MC34VR500V7ES outputs a regulated + 5V DC voltage to its load through its boost output pin and has a PWM control pin to control current across the inductors of the bridge. The MC34VR500V7ES also has an enable pin which allows the user to enable and disable the voltage converter as needed.

A frequency foldback feature is also included which reduces the output voltage when the load exceeds the set current limit. When the load current drops below the set level, the output voltage is restored to normal. This feature helps to prevent the converter from wasting energy when the load is too high.

Finally, the MC34VR500V7ES includes an essential set of housekeeping features such as an overvoltage protection circuit which detects when the output voltage exceeds a predetermined level, an open loop detector which detects when the output current has exceeded the internal limit, and a positive temperature coefficient (PTC) overload protection circuit which reduces the output voltage when the load current exceeds a predetermined level.

Conclusion

The MC34VR500V7ES is a three-phase boost PFC controller designed by ON Semiconductor for server power supplies, industrial power supplies, and renewable energy systems. It has a high-performance voltage regulator loop and a synchronous PWM buck-boost detector built-in, as well as current mode, frequency foldback, and cycle-by-cycle peak current limit protection. It also has current foldback, undervoltage detection voltage protection, and a set of housekeeping features including positive temperature coefficient (PTC) overload protection, undervoltage lockout (UVLO), open loop detector, and cycle-by-cycle peak current limit protection. The MC34VR500V7ES is suitable for wide range of applications and provides the necessary protection features for any power management system.

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