MC33362 ON Semiconductor, MC33362 Datasheet - Page 11

• Manufacturer Part Number: MC33362
• Description: High Voltage Switching Regulator
• Manufacturer: ON Semiconductor

92 to 138
Vac Input
1.5 nF
8.2 k
1.0
C4
C3
R1
1.0 A
8
6
7
F1
D4
D2
Mirror
Thermal
Table 1. Converter Test Data
Line Regulation
Load Regulation
Output Ripple
Efficiency
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
D1
D3
PWM
Osc
1N4004
Test
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 (L
Core and Bobbin: Coilcraft PT1950, E187, 3F3 material.
4, 5, 12, 13
Reg
PWM Latch
270 µA
V
V
V
V
C1
47
in
in
in
in
S
R
= 92 Vac to 138 Vac, I
= 115 Vac, I
= 115 Vac, I
= 115 Vac, I
I Limit
Q
Figure 22. 20 W Off−Line Converter
Startup
Driver
EA
LEB
O
O
O
http://onsemi.com
= 1.0 A to 4.0 A
= 4.0 A
= 4.0 A
Conditions
IC1 MC33362
14.5 V/
9.5 V
2.6 V
UVLO
OVP
1
2.6 V
O
11
4.0 A
4.0 nF
10
C5
11
16
P
9
3
) of 330 mH.
R2
2.7 k
C2
R4
16 k
R3
2.7 k
10
1.0 W
100 k
MUR
5
4
160
D5
R6
R5
39
MUR
C6
47 pF
R7
2.2 k
1.0 W
120
D6
D = 1.0 mV
D = 9.0 mV
Triangular = 10 mVpp
Spike = 60 mVpp
78.4%
T1
2515L
MBR
D7
Results
330
MOC
8103
C8
IC2
TL431B
330
C9
IC3
330
C10
1
2
3
2
5.0 µH
100 nF
R8
220
2.80 k
C7
L1
1
2.74 k
R9
R10
C11
220
5.05 V/4.0 A
DC Output
C12
1.0