UCC28180
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SLUSBQ5A –NOVEMBER 2013–REVISED NOVEMBER 2013
Design Example
Design Goals
This example illustrates the design process and component selection for a continuous mode power factor
correction boost converter utilizing the UCC28180. The pertinent design equations are shown for a universal
input, 360-W PFC converter with an output voltage of 390 V.
Table 1. Design Goal Parameters
PARAMETER
Input Characteristics
TEST CONDITION
MIN
TYP
MAX
UNIT
VIN
Input voltage
85
47
265
VAC
Hz
fLINE
Input frequency
63
VIN = VIN(min)
IOUT = IOUT(max)
,
IIN(peak)
Peak input current
7
A
Output Characteristics
V
IN(min) ≤ VIN ≤ VIN(max)
fLINE(min) ≤ fLINE≤ fLINE(max)
OUT ≤ IOUT(max)
,
VOUT
Output voltage
Line Regulation
,
379
390
402
5%
5%
VDC
I
V
IN(min) ≤ VIN≤ VIN(max),
IOUT = IOUT(max)
VIN = 115 VAC,
fLINE = 60 Hz,
I
OUT(min) ≤ IOUT ≤ IOUT(max)
Load Regulation
VIN = 230 VAC,
fLINE = 60 Hz,
5%
I
OUT(min)≤ IOUT ≤ IOUT(max)
IN(min) ≤ VIN ≤ VIN(max)
fLINE(min) ≤ fLINE ≤ fLINE(max)
IN(min) ≤ VIN ≤ VIN(max)
LINE(min) ≤ fLINE ≤ fLINE(max)
V
IOUT
Output Load Current
Output Power
0
0
0.923
360
A
V
f
POUT
W
VIN = 115 VAC,
fLINE = 60 Hz
IOUT = IOUT(max)
2.5
2.5
3.9
3.9
VRIPPLE(SW High frequency
VP-P
Output voltage ripple
)
VIN = 230 VAC,
fLINE = 50 Hz
IOUT = IOUT(max)
VIN = 115 VAC,
fLINE = 60 Hz,
IOUT = IOUT(max)
11.6
13.3
19.5
19.5
VRIPPLE(f_LI Line frequency
VP-P
Output voltage ripple
NE)
VIN = 230 VAC,
fLINE = 50 Hz,
IOUT = IOUT(max)
Output over voltage
protection
VOUT(OVP)
VOUT(UVP)
425
370
V
Output under voltage
protection
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