ML4827CS-2 View Datasheet(PDF) - Micro Linear Corporation
Part Name
Description
MFG CO.
'ML4827CS-2' PDF : 16 Pages View PDF
ML4827
LEADING/TRAILING MOD. (Continued)
such synchronized switching, the ripple voltage of the
first stage is reduced. Calculation and evaluation have
shown that the 120Hz component of the PFC’s output
ripple voltage can be reduced by as much as 30% using
this method.
TYPICAL APPLICATIONS
Figure 7 is the application circuit for a complete 100W
power factor corrected power supply. This circuit was
designed using the methods and topology detailed in
Application Note 33.
AC INPUT
85 TO 265VAC
C1
470nF
F1
3.15A
BR1
4A, 600V
R2A
357kΩ
R1A
499kΩ
R2B
357kΩ
C3
470nF
D12
1N5401
D13
1N5401
R1B
499kΩ
R3
75kΩ
C2
470nF
R4
13kΩ
R5
300mΩ
1W
C19
1µF
L1
3.1mH
D1
8A, 600V,
"FRED" Diode
Q1
IRF840
C4
10nF
C5
100µF
R27
39kΩ
R21
2W
22Ω
R28
180Ω
D3
BYV26C
C30
330µF
C12
10µF
C7
220pF
R12
C6
27kΩ
1nF
R7A
178kΩ
R7B
178kΩ
Q2
R17 IRF830
33Ω
C25
100nF
T1
R15
3Ω
R30
4.7kΩ
C20
1µF
D5
BYV26C
D7
15V
D11
L2
T2 MBR2545CT 33µH
D6
BYV26C
C21
1800µF
C24
1µF
R24
1.2kΩ
R14
Q3
33Ω
IRF830
R19
220Ω
R20
1.1Ω
10kΩ
R23
1.5kΩ
MOC
8102
R26
10kΩ
C22
4.7µF
R18
220Ω
9W
C23
100nF
TL431
12VDC
RTN
R22
8.66kΩ
R25
2.26kΩ
1
IEAO
2
IAC
3
ISENSE
4
VRMS
5
SS
6
VDC
7
RAMP 1
8
RAMP 2
16
VEAO
15
VFB
VREF 14
13
VCC
12
PFC OUT
11
PWM OUT
10
GND
9
DC ILIMIT
ML4827-1
C18
470pF
R6
41.2kΩ
R10
6.2kΩ
C15
10nF
C13
100nF
C16
1µF
C14
1µF
R8
2.37kΩ
C9
8.2nF
C31 R11
1nF 750kΩ
C8
82nF
D8
1N5818
D10
1N5818
C17
220pF
L1: Premier Magnetics #TSD-734
L2: 33µH, 10A DC
T1: Premier Magnetics #TSD-736
T2: Premier Magnetics #TSD-735
Premier Magnetics: (714) 362-4211
C11
10nF
Figure 7. 100W Power Factor Corrected Power Supply, Designed Using Micro Linear Application Note 33.
14
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