ml4841is Micro Electronics Corporation, ml4841is Datasheet - Page 13

• Manufacturer Part Number: ml4841is
• Description: Variable Feedforward Pfc/pwm Controller Combo
• Manufacturer: Micro Electronics Corporation

TYPICAL APPLICATIONS
Figure 6 is the application circuit for a complete 100W
power factor corrected power supply, designed using the
4A, 600V
300m
BR1
1W
85 TO 265VAC
R5
AC INPUT
680nF
C1
100nF
470nF
C3
C2
1A, 50V
1A, 50V
D12
D13
C19
1µF
3.15A
453k
453k
F1
R2A
R2B
75k
13k
499k
499k
R3
R4
R1A
R1B
10nF
C11
390pF
C18
330µF
22k
C30
R27
56.2k
390pF
Figure 6. 100W Power Factor Corrected Power Supply.
IEAO
I AC
I SENSE
V RMS
SS
V DC
RAMP 1
RAMP 2
27k
R12
IRF840
3.1mH
Q1
L1
ML4841
220pF
R21
22
PWM OUT
C7
DC I LIMIT
24.9k
PFC OUT
160
R6
R28
VEAO
8A, 600V
1nF
GND
C6
V REF
V CC
10µF
V FB
C12
10nF
D1
C4
6.2k
R10
50V
D3
178k
178k
R7A
R7B
100µF
C5
1A, 20V
D8
220pF
C17
general methods and topology suggested in Application
Note 33.
R15
3
100nF
C20
1µF
C25
33
R14
220
T1
R19
10nF
C15
1A, 20V
4.7k
33
R17
D10
R30
IRF830
C16
1µF
Q3
IRF830
Q2
1.1
R20
15V
D7
100nF
C13
600V
D6
C14
1µF
600V
D5
T2
2.37k
1.5k
R23
MBR2545CT
R8
D11
TL431
10k
C31
R26
1nF
1800µF
4.7µF
33µH
C21
C22
L2
750k
100nF
C23
R11
82nF
C8
1.2k
R24
ML4841
220
C24
1µF
R18
8.2nF
C9
2.26k
8.66k
R25
R22
12VDC
RTN
13