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Package | PIN:

D | 16


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PUCC28064D-Natural Interleaving™ Transition-Mode PFC Controller With Improved Light-Load Efficiency

This solution extends the advantages of transition mode – high efficiency with low-cost components – to higher power ratings than previously possible. By utilizing a Natural Interleaving™ technique, both channels operate as masters (that is, there is no slave channel) synchronized to the same frequency. This approach delivers inherently strong matching, faster responses and ensures that each channel operates in transition Mode. UCC28064 improves line transients response of UCC28063 because has implemented line feed forward compensation. Improved light load efficiency is obtained thanks to burst mode operation. Burst mode and phase management operation can be set and fine tuned, according to application needs, thanks to flexibility in configuration of these features.

Expanded system level protections feature input brownout and dropout recovery, output over-voltage, open-loop, overload, soft-start, phase-fail detection, and thermal shutdown. The additional failsafe overvoltage protection (OVP) feature protects against shorts to an intermediate voltage that, if undetected, could lead to catastrophic device failure. Advanced non-linear gain results in rapid, yet smoother response to line and load transient events. Special line-dropout handling avoid significant current disruption. Strong reduction of bias current when not switching during burst mode operation, improves stand-by performance.

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