MC33362 查看數據表（PDF） - ON Semiconductor
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MC33362 Datasheet PDF : 14 Pages
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MC33362
F1
1.0 A
D4
D3
C1
1N4004
47
92 to 138
Vac Input
D2 D1
C4 8
1.0
6
R1
8.2 k
C3 7
1.5 nF
Mirror
Osc
PWM
Thermal
Startup
Reg
PWM Latch
S
Driver
Q
R
LEB
ILimit
270 µA
EA
4, 5, 12, 13
C5
4.0 nF
1
3
UVLO
14.5 V/
9.5 V 11
OVP
2.6 V
16
R6
100 k
1.0 W
D5
MUR
160
R5
39
C6
47 pF
R7
2.2 k
1.0 W
D6
MUR
120
D7
T1 MBR
2515L
C9 C10
330 330
L1
5.0 µH
C2
R8
10
220
R4
16 k
C8
330
R9
1 2.80 k
R3
2.7 k
2
C7
100 nF
IC2
MOC
31
8103 IC3
TL431B 2
5.05 V/4.0 A
DC Output
C11
220
C12
1.0
R10
2.74 k
5
4
9
R2
2.6 V
2.7 k
10
IC1 MC33362
Figure 22. 20 W Off−Line Converter
Table 1. Converter Test Data
Test
Conditions
Results
Line Regulation
Load Regulation
Output Ripple
Vin = 92 Vac to 138 Vac, IO 4.0 A
Vin = 115 Vac, IO = 1.0 A to 4.0 A
Vin = 115 Vac, IO = 4.0 A
D = 1.0 mV
D = 9.0 mV
Triangular = 10 mVpp
Spike = 60 mVpp
Efficiency
Vin = 115 Vac, IO = 4.0 A
78.4%
This data was taken with the components listed below mounted on the printed circuit board shown in
Figure 23.
For high efficiency and small circuit board size, the Sanyo Os−Con capacitors are recommended for C8,
C9, C10 and C11.
C8, C9, C10 = Sanyo Os−Con #6SA330M, 330 mF 6.3 V.
C11 = Sanyo Os−Con #10SA220M, 220 mF 10 V.
D7 = MBR2515L mounted on Aavid #592502B03400 heatsink.
L1 = Coilcraft S5088−A, 5.0 mH, 0.11 W.
T1 = Coilcraft S5069−A
Primary: 58 turns of # 26 AWG, Pin 1 = start, Pin 8 = finish.
Two layers 0.002″ Mylar tape.
Secondary: 4 turns of # 18 AWG, 2 strands bifiliar wound, Pin 5 = start, Pin 4 = finish.
Two layers 0.002″ Mylar tape.
Auxiliary: 10 turns of # 26 AWG wound in center of bobbin, Pin 2 = start, Pin 7 = finish.
Two layers 0.002″ Mylar tape.
Gap: 0.014″ total for a primary inductance (LP) of 330 mH.
Core and Bobbin: Coilcraft PT1950, E187, 3F3 material.
http://onsemi.com
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