UCC38051P

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The UCC38051P is one of the latest power factor correction (PFC) power management integrated circuits (PMICs) released by Texas Instruments. It provides an easy-to-use, low-power and cost-effective solution for power supply design. It is an ideal choice for energy-aware, performance-demanding applications such as lighting, home appliance and professionally powered applications.

PFC is a technology designed to increase efficiency and safety of AC power systems. It works by converting load current into a square waveform with constant amplitude, thus minimizing losses associated with the heating of wires and other components. The UCC38051P is a current-mode PFC IC that employs an autotransformer to regulate current for a system connected in series. It uses a constant-frequency, peak-current-mode control design and is capable of regulating output power up to 1 kW.

The UCC38051P provides several features, such as power factor correction up to 99%, soft-start, inrush current limiting, over current and over temperature protection, as well as integrated compensation and protection circuits. It also includes an internal low-side gate driver for a MOSFET switch and the ability to perform active power factor correction with either a single switch or a half-bridge topology. The output voltage can be set using an external voltage divider, and the output current can be adjusted using an external Resistor.

The UCC38051P utilizes various forms of control algorithms, such as average current control mode, load compensated average current control mode and hysteretic control mode. The autotransformer boosts the dc current until the current drawn is equal to the load current and operates at an estimated frequency of 400 kHz, minimizing EMI and RF interference. In addition, it has a full set of protection circuits, including over temperature protection and short-circuit protection, as well as current sensing for accurate, real-time monitoring of the output current.

In summary, the UCC38051P is an advanced power factor correction IC from Texas Instruments, which provides an optimized, cost-effective and highly efficient solution for power supply regulation. Its efficient power conversion and integrated protection features makes it an ideal choice for lighting and application-critical applications, as it helps to consumer less energy and provide a more stable power output.

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