MC33363A Motorola, MC33363A Datasheet - Page 10

• Manufacturer Part Number: MC33363A
• Description: HIGH VOLTAGE OFF-LINE SWITCHING REGULATOR
• Manufacturer: Motorola

1200 pF
92 to 276
Vac Input
10
13 k
1.0
C4
C3
R1
1.0 A
8
6
7
F1
D4
D2
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 22.
* With MBR2535CTL, 78.8% efficiency. PCB layout modification is required to use this rectifier.
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 F 6.3 V.
C11 = Sanyo Os–Con #10SA220M, 220 F 10 V.
L1 = Coilcraft S5088–A, 5.0 H, 0.11 .
T1 = Coilcraft U6875–A
Mirror
Thermal
D1
D3
PWM
Osc
Test
Primary: 77 turns of # 28 AWG, Pin 1 = start, Pin 8 = finish.
Two layers 0.002 Mylar tape.
Secondary: 5 turns of # 22 AWG, 2 strands bifiliar wound, Pin 5 = start, Pin 4 = finish.
Two layers 0.002 Mylar tape.
Auxiliary: 13 turns of # 28 AWG wound in center of bobbin, Pin 2 = start, Pin 7 = finish.
Two layers 0.002 Mylar tape.
Gap: 0.011 total for a primary inductance (L P ) of 620 H.
Core and Bobbin: Coilcraft PT1950, E187, 3F3 material.
1N4006
4, 5, 12, 13
Reg
V in = 92 Vac to 276 Vac, I O 3.0 A
V in = 115 Vac, I O = 0.75 A to 3.0 A
V in = 230 Vac, I O = 0.75 A to 3.0 A
V in = 115 Vac, I O = 3.0 A
V in = 230 Vac, I O = 3.0 A
V in = 115 Vac, I O = 3.0 A
V in = 230 Vac, I O = 3.0 A
PWM Latch
270 A
C1
47
S
R
I Limit
Figure 20. 15 W Off–Line Converter
Q
Startup
Conditions
Figure 21. Converter Test Data
Driver
EA
LEB
MC33363A
IC1 MC33363A
14.5 V/
9.5 V
2.6 V
UVLO
OVP
1
2.6 V
4.0 nF
10
C5
16
11
9
3
R2
2.7 k
R4
5.1 k
R3
1.0 k
Triangular = 2.0 mVpp, Spike = 32 mVpp
Triangular = 2.0 mVpp, Spike = 34 mVpp
76.8%*
76.8%
1100E
C2
10
1.0 W
180 k
MUR
5
4
= 1.0 mV
= 5.0 mV
= 5.0 mV
D5
R6
R5
39
MUR
C6
47 pF
R7
2.2 k
1.0 W
120
D6
MOTOROLA ANALOG IC DEVICE DATA
T1
Results
MBR
1635
D7
MOC
330
8103
C8
IC2
TL431B
330
C9
IC3
330
C10
1
2
3
2
5.0 H
100 nF
R8
220
2.80 k
C7
L1
1
2.74 k
R9
R10
C11
220
5.05 V/3.0 A
DC Output
C12
1.0