UCC2809PW-1

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

Power conversion devices have become an essential component in a range of electrical and electronic products from audio/video, home appliances, digital cameras, medical devices, data converters, and PLC\'s. With the rise of the semiconductor industry, Power Management Integrated Circuits (PMICs) have emerged as the primary component for managing power supply, switching and voltage regulation applications. One such PMIC is the UCC2809PW-1, a standard low loss three-phase offline switcher.

UCC2809PW-1 falls under the PMIC - AC DC Converters, Offline Switchers class of PMICs. These components are designed to convert alternating current (AC) to direct current (DC), as well as to switch between AC and DC sources. Typical applications include UPSs, solar energy systems, and home appliances.

The UCC2809PW-1 is a three-phase offline switcher, designed to convert AC to DC up to 460VAC, while ensuring very low switching losses, high efficiency, and high power density. It integrates all active components needed for the implementation of high power three-phase offline flyback converters, including:

• Three high voltage power MOSFETs.
• Safe operating area protection and over temperature protection.
• Auxiliary parts consisting of an optocoupler for feedback, an auxiliary winding for start-up current regulation, an NTC for temperature sensing, and a bypass capacitor.

The UCC2809PW-1 is also capable of PFC functionality with a boost-buck control feature when combined with an external transistor. It contains a primary control loop with various protection functions, including undervoltage lock-out (UVLO), maximum duty cycle cycle protection, adjustable OCP and thermal shutdown.

The working principle of UCC2809PW-1 is fairly simple and straightforward. First, a current starts to flow through the main winding which, due to the induction effect, creates a magnetic field. This magnetic field is then used to build a voltage in the secondary winding, which is rectified by the diode and then collected at the output filter capacitor. The output voltage is controlled by the feedback control circuit which detects any changes in the output voltage and then adjusts the switching times of the MOSFETs accordingly. This ensures that the output voltage is stabilized and regulated.

Aside from the primary control loop mentioned above, the UCC2809PW-1 also contains several protection circuits, such as overcurrent protection (OCP) and over-temperature protection (OTP). The OCP is used to monitor the current through the MOSFETs, and if the current gets too high, the device will shut itself down. The OTP monitors the ambient temperature of the device and warns the user if the device is running too hot. If the temperature exceeds a certain threshold, the device will shut itself down to prevent damage.

In summary, the UCC2809PW-1 is a low loss three-phase offline switcher, designed to provide reliable and efficient power conversion up to 460VAC. It integrates all the active components required for the implementation of high power three-phase offline flyback converters, and also offers OCP and OTP protection, as well as PFC functionality. Thus, the UCC2809PW-1 is an excellent choice for a range of power conversion applications.

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