MP4021A Ver la hoja de datos (PDF) - Monolithic Power Systems
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MP4021A Datasheet PDF : 21 Pages
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MP4021A—PRIMARY SIDE CONTROL OFFLINE LED CONTROLLER WITH ACTIVE PFC
TYPICAL APPLICATION CIRCUIT
L2
4.7m H
CX2
22nF/2 75VAC
R17
5.1k
R18
L1
5.1k
4.7m H
CX1
22nF/2 75VAC
RV1
F1
250V/2A
TVR10D 431
BD1
MB6S
C4
100nF/400 V
R3
1M
C8
22nF/6 30V
R6
100k
R10
R5
Optional for wide output 5M
510k voltage applications
D2
1N4007
C5
100pF
R4
4.02 k
C6
10 0V
C7
100pF
D6
BZ T52 C27
R19
3M
D3
R13
ES1 D
100
1 MULT
2 ZCD
COMP
FB
8
C10
F/10 V
7
3 VCC
GND 6
4 GATE
CS 5
U1 MP4021A
D1 1N4148W
R1
56k
R7 20
Q1
CEP 05N6 5
R2
C9 15.4k
68pF/6 30V
R12 499
R15
68
R16
300
R8
R9
1.1
2.2
R14
1
RM6
Lp=1.665mH
Np:Ns:Naux =96:28:27
1 T1
D4
MURS 320T3
W
33 F/35V
C2
2
6
B
AUX+
CY1
R11
30k
C1 C3
330
NS
2.2n F/25 0V
D5
C11
1N4148W 47pF
CON2
CON1
Figure 15—Universal Input, Isolated Flyback Converter, Drive 3-6 LEDs in Series, 350mA LED
Current for LED Bulb Lighting
L3 1mH
BD1
KBP206
47nF/275Vac
CX2
R18
5.1k
2.2mH
L1 L2
2.2mH
R19
5.1k
RV1
275Vac
F1
250V/3.15A
CON1
R20 1k
100nF/400V
C4
R3
R5
1M
499k
C8
22nF/630V
R6
100k
R10
10M
D2
1N4007
R21
0
D3
R13
ES1D
357
1
8
MULT COMP
C5
100pF
C6
R4
7.32k
100pF
C7
2 ZCD
3 VCC
FB 7 C10
C9
6 NC
GND
D6 4 GATE CS 5
BZT52C20
U1
MP4021A
R7
20 Q1
SMK0870F
R12
100
R9 R8
3.3 1
Core: EFD25
Lp=2.06mH
Np:Ns:Naux=126:36:20
R22 NC C12NC
T1
D4
C2
MURS320T3
R11
30k
C1
C3
NC CON2
CY1
R14
100k
3.3nF/2600V
1N4148
D5
R2
30.9k
C11
10pF
R1
0.4
R15
750
D1
R16
1N4148
3k
Figure 16—Universal Input, Isolated Flyback Converter, Drive 9 LEDs in Series, 500mA LED
Current for 15W LED Tube Lighting
MP4021A Rev.1.04
www.MonolithicPower.com
19
7/5/2013
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© 2013 MPS. All Rights Reserved.
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