MC34262, MC33262
1
D
2
92 to RFI
138 Vac Filter
D
4
Zero Current
Detector
+
1.2V
+
36V
6.7V
UVLO
+ 13V/
8.0V
16V
Drive
Output
RS
Latch
2.2M
R
5
10
10
7
MUR130
D
5
+
MTP
8N50E
Q
1
5
C
5
100k
R
6
8
+
1N4934
D
6
100
C
4
22k
R
4
T
D
1
D
3
1.6V/
1.4V
2.5V
Reference
V
O
220
C
3
Timer R
Delay
230V/
0.35A
Current Sense
Comparator
20k
1.5V
Overvoltage
Comparator
+
1.08 V
ref
10mA
Error Amp
+
V
ref
10pF
4
0.1
R
7
1.0M
R
2
0.01
C
2
7.5k
R
3
Multiplier
3
1
11k
R
1
Quickstart
6
2
0.68
C
1
Figure 20. 80 W Power Factor Controller
Power Factor Controller Test Data
AC Line Input
Current Harmonic Distortion (% I
fund
)
V
rms
90
100
110
120
130
138
P
in
85.9
85.3
85.1
84.7
84.4
84.1
PF
0.999
0.999
0.998
0.998
0.997
0.996
I
fund
0.93
0.85
0.77
0.71
0.65
0.62
THD
2.6
2.3
2.2
3.0
3.9
4.6
2
0.08
0.13
0.10
0.09
0.12
0.16
3
1.6
1.0
0.58
0.73
1.7
2.4
5
0.84
1.2
1.5
1.9
2.2
2.3
7
0.95
0.73
0.59
0.58
0.61
0.60
V
O(pp)
4.0
4.0
4.0
4.1
4.1
4.1
V
O
230.7
230.7
230.7
230.7
230.7
230.7
I
O
0.350
0.350
0.350
0.350
0.350
0.350
P
O
80.8
80.8
80.8
80.8
80.8
80.8
h(%)
94.0
94.7
94.9
95.3
95.7
96.0
DC Output
This data was taken with the test set−up shown in Figure 24.
T = Coilcraft N2881−A
Primary: 62 turns of # 22 AWG
Secondary: 5 turns of # 22 AWG
Core: Coilcraft PT2510, EE 25
Gap: 0.072″ total for a primary inductance (L
P
) of 320
mH
Heatsink = AAVID Engineering Inc. 590302B03600, or 593002B03400
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11
ONSEMI [ ON SEMICONDUCTOR ]
