UCC3895DW

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The UCC3895DW is an AC/DC synchronous buck converter offering a reliable, cost effective solution for high power applications. The UCC3895DW is capable of delivering up to 150 W of output power and can be configured to run from an input voltage range of 8 V to 30 V. It is well suited for applications such as automotive supplies, point-of-load (POL) conversion and data storage.

The UCC3895DW integrates several features to ensure efficient, reliable and rugged designs. Its advanced protection features include cycle-by-cycle current limit, over-voltage protection, short-circuit protection and thermal overload protection. The UCC3895DW also includes integrated remote-sense and voltage-mode control loop for improved transient response. Additionally, its wide operating range, low Quiescent Current (Iq) and low Rds(on) FETs reduce switching losses and improve efficiency.

The UCC3895DW offers a wide operating range and a wide variety of operating modes, providing superior flexibility and cost savings. At the heart of the UCC3895DW device is a low-noise power converter with a synchronous buck topology. This topology provides robust operation and excellent transient response, even at light load. The integrated control loop includes an internal temperature compensation, as well as an adjustable soft-start/soft-stop frequency.

In addition to its high power delivery, the UCC3895DW also features a wide range of configurable operating modes including Burst Mode® operation, frequency synchronization, and flexible fault protection. Burst Mode operation allows the UCC3895DW to achieve exceptional efficiency at very light load currents, while still offering robust protection features. The UCC3895DW also features a wide range of configurable fault protection features, including cycle-by-cycle current limit, overvoltage protection, and over temperature shutdown.

The UCC3895DW integrates both high and low side drivers to control the power switch. The drivers employ a proprietary Adaptive Dead Time control logic to ensure low-noise operation and improved switching efficiency. The drivers are also capable of supporting many different switching schemes, including pulse width modulation (PWM), Pulse Frequency Modulation (PFM), and continuous conduction mode (CCM), as well as several other configurable modes.

In summary, the UCC3895DW is a highly integrated, cost-effective solution for high power applications. It offers robust protection features, excellent efficiency, and a wide range of configurable operating modes. Additionally, its wide operating range, low quiescent current, and low FET Rds(on) allow significantly reduced switching losses and improved efficiency.

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