UCC28019P datasheet(23/48 Pages) TI

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DESIGN EXAMPLE

350-W, Universal Input, 390-V

DC Output, PFC Converter

Design Goals

UCC28019

SLUS755 – APRIL 2007

This example illustrates the design process and component selection for a continuous conduction mode power

factor correction boost converter utilizing the UCC28019. The target design is a universal input, 350W PFC

designed for an ATX supply application. This design process is directly tied to the UCC28019 Design Calculator

spreadsheet that can be found in the Tools section of the UCC28019 product folder on the Texas Instruments

website.

Table 1. Design Goal Parameters

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

Input characteristics

Input voltage

VIN

115

265

VAC

Input frequency

fLINE

VAC(on)

IOUT = 0.9 A

Brown out voltage

VAC

VAC(off)

IOUT = 0.9 A

Output characteristics

VOUT

85 VAC

≤ V

IN ≤ 265 VAC

Output voltage

370

390

410

VDC

47 Hz

≤ f

LINE ≤ 63 Hz

0 A

≤ I

OUT ≤ 0.9 A

85 VAC

≤ V

IN≤ 65VAC

Line regulation

IOUT = 0.440 A

VIN = 115 VAC, fLINE = 60 Hz

0 A

≤ I

OUT≤ 0.9 A

Load regulation

VIN = 230 VAC, fLINE = 50 Hz

0 A

≤ I

OUT≤ 0.9 A

VRIPPLE(SW)

VIN = 115 VAC, fLINE = 60 Hz

3.9

IOUT = 0.9 A

High frequency output voltage

ripple

VRIPPLE(SW)

VIN = 230 VAC , fLINE = 50 Hz

3.9

IOUT = 0.9 A

Vpp

VRIPPLE(f_LINE)

VIN = 115 VAC, fLINE = 60 Hz,

19.5

IOUT = 0.9 A

Line frequency output voltage

ripple

VRIPPLE(f_LINE)

VIN = 230 VAC, fLINE = 50 Hz

19.5

IOUT = 0.9 A

IOUT

Output load current

85 VAC

≤ V

IN≤ 265 VAC

0.9

47 Hz

≤ f

LINE≤ 63 Hz

Output power

POUT

350

Output over voltage protection

VOUT(OVP)

410

Output under voltage protection

VOUT(UVP)

370

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