UC3875QP

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The UC3875QP is an integrated gate-driver device which contains all the necessary components to drive a three-phase bridge rectifier bridge at up to 15A output current. This device is designed for use with standard upper and lower bridge rectifier diodes and is capable of providing currents greater than 15A with slight modifications. The device utilizes a switched voltage-mode technique to regulate the three-phase output current while simultaneously providing a voltage feedback loop to rapidly respond to changes in the input voltage.

The UC3875QP is a single chip, three-phase bridge driven CMOS-based power supply and gate driver which can deliver up to 15A peak output current. Its advanced switching regulation technique and built-in thermal protection make it ideal for advanced power supplies and off-line switchers applications. Additionally, its wide operating voltage range, up to 500V, and its capability to do with standard upper and lower bridge rectifier diodes, makes it a popular choice for applications such as telecom, server and medical power supplies.

The UC3875QP uses a voltage-mode switching technique to regulate the output current of the three-phase bridge. The internal circuitry of the device allows it to provide the necessary voltage feedback necessary to rapidly respond to changes in the input voltage. The device also contains an analog reference voltage source which is used to set the current output. The internal PWM comparator of the UC3875QP then compares the reference voltage to the output voltage that the device is providing, allowing it to make the necessary adjustments to the current output.

In addition to its voltage-mode switching technique, the UC3875QP also contains robust protection features. The device was designed with twice temperature protecting against over-temperature conditions in order to protect the device from overheating. Additionally, the device contains a slew-rate limiter which limits the rate of change of an inductor’s current ramp up or down, thus reducing electrical noise.

As a result, the UC3875QP is an ideal option for a variety of power supply and off-line switchers applications, thanks to its integrated gate-driver capabilities, robust protection features, and advanced switching regulation technique. Its wide operating voltage range and its ability to work with standard upper and lower bridge rectifiers make it a popular choice for telecom, server and medical power supplies.

The specific data is subject to PDF, and the above content is for reference