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
R17
1k
L3
1.2mH
C1
220nF/400V
CX1
BD1
R1
DF06S
1M
R3
499k
R7
10M
47nF/275Vac
R19
1k
L1
1.8mH
L2
R18
1.8mH 1k
C2
R2
100pF 6.8k
D3
R4
ES1G
357
1 MULT
2 ZCD
COMP8
C5
FB 7
F1
250V/2A
C3 C4
100pF
3 VCC GND6
D2
BZT52C420GATE
CS 5
U1
MP4021A
R8
10
R9
510
R10
1
CON1
R6
210
R5
1.2k
R15
C6
30k
D6
STTH2R06
600V/2A
Q1
AP3990I
R16
1k
T1
SRL1422ER
C8
68pF/630V
R14
Np:Naux=45:17
20k
Lp=0.4mH
R13 D4
5.1k 1N4148
LED-
CON2
LED+
Output:60V/350mA
R11
1
R12
50m
D5
1N4148
Figure 17—Universal Input, Non-isolated Buck-boost Converter, Drive 19 LEDs in Series, 350mA
LED Current for 21W LED Tube Lighting
L4
3.2mH/0.5A
BD1
KBP206/600V/2A
CX1
47nF/275Vac
R3
10k/1206
C2
100nF/630V
R4
1M/0.25W
R6
510k/1%/0.5W
D2
ES1D/200V/1A
C7
22nF/630V
R15
100k/1206
R8
D3
NS
1N4007
1000V/1A
Vsample
R7
51/1206
EFD20
1 Lp=2.4mH
R19 C9
NS NS
C11
205Ts T1 7
2
D6
MURS320T3
4
41Ts 200V/3A R20
LED+
30V/10W
27Ts
6
5.1k/1206*5
C10 C12
LED-
5
NS
L1
10mH/0.7A
RV1
TVR10431KSY
L
85-265VAC
C1
2.2nF
1 MULT
8
COMP
R5
5.6k/1%
C4
100pF/50V
2 ZCD
3 VCC
R21
FB 7 5.1k
C6
GND 6 0805
C3
D1
4 GATE
CS 5
BZT52C27/27V
U1
MP4021A
Vsample
R22
20/1206
D7
BAV21W/200V/0.2A
D8
BZT52C18/18V
R23
C13 270k/1%
R24
5.6k/1%
R9
20/1%/1206
Q1
SMK0870F
700V/8A
R10
220
R17
110k
D5
1N4148W
CY1
2.2nF/4000V
R18
30.9k
C8
10pF
R13 R16
NS 1/1%/1206
R25
910
R14
200m/1%/1206
R12
750/1%
R11
3k/1%
D4
1N4148W
75V/0.15A
Figure 18—Universal Input, isolated Flyback Converter, Primary Constant Voltage Control,
30V/10W Output
MP4021A Rev.1.04
www.MonolithicPower.com
20
7/5/2013
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