UCC28056CDBVT datasheet(27/55 Pages) TI2

27 / 55 page

UCC28056

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SLUSD37E – OCTOBER 2017 – REVISED NOVEMBER 2019

Product Folder Links: UCC28056

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9 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

9.1 Application Information

The UCC28056 controller can be used in a wide range of applications in which a PFC stage is needed. This

design example demonstrates the features of the controller.

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EVM hardware

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Excel design calculator

9.2 Typical Application

Figure 26 shows a typical application of the UCC28056 as a preregulator with high power factor and efficiency.

The assembly consists of two distinct parts

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the control circuit centering on the UCC28056

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the power section

The power section is a Boost converter, with the inductor operating in Transition Mode (TM/CrM) or

Discontinuous Mode (DCM) according to Line and Load.

UCC28056CDBVT Datasheet(PDF) 27 Page - Texas Instruments