UCC28C44D

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 UCC28C44D integrated circuit is a dual-channel offline switcher control circuit (PMIC) engineered to provide effective power control to applications such as LED drivers, AC–DC offline converters, switch-mode power supplies and isolated DC–DC converters. The IC provides an economical and reliable solution for controlling power by adaptively switching between two input voltage sources for improved efficiency and reliability.

The UCC28C44D offers users two independently controlled channels for two different devices or two separate loads, e.g. two LEDs in series, two fan motors, two relays, etc. The channel output voltage can be configured from one of two input sources depending on the capacity of the input source, aiming to ensure a stable output voltage through cross regulation. Each channel also features a unique overload protection mechanism that helps reduce over-current concentrations and protect both the device and the load.

Application Field and Working Principle

The UCC28C44D is suitable for many power supply applications. Its dual-channel capability is especially useful in places where multiple loads, such as LEDs, fans, relays, etc., must be controlled. The device is highly configurable and allows each channel to source voltage from either input source depending on its capacity. This feature is particularly useful in offline applications where it’s important to have an alternative power source in case of a power failure.

The UCC28C44D makes power control simple and efficient. The device uses a boost converter topology to regulate the output voltage. The basic principle of operation involves creating a voltage feedback loop through a peak current detection block. When the input voltage drops below the threshold voltage, the peak current detection block senses the lower available power and initiates a cross regulation cycle to switch the internal power switch from one supply to the other. This provides a stable output voltage in case of input voltage fluctuations or power failures.

The UCC28C44D was engineered to be tailored to user’s application needs and preferences. The device features multiple configuration options, allowing users to configure the device’s operating parameters, such as overcurrent protection threshold and frequency. In addition, the device offers several protection features such as over-voltage protection, under-voltage protection, and over-temperature protection, ensuring reliable and safe operation.

In summary, the UCC28C44D integrated circuit offers users a reliable and cost-effective solution for offline power supply applications. Its dual-channel, cross-regulation capabilities make it a great choice for applications requiring flexibility and stability. The device also features numerous, user configurable parameters and protection functions, providing both user and load protection.

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