MC34261 Datasheet, PDF (8/13 Pages) Motorola, Inc – POWER FACTOR CONTROLLERS

MC34261, MC33261
Figure 15. 80 W Power Factor Controller
92 to _RFI
138 Vac _Filter
1 C₆
D₂ D₄
D₁ D₃
2.2M
R₇
0.01 7.5k
C₂
R₃
Delay
Current Sense
Comparator
3
6
Zero Current
Detector
2.5V
Reference
+
1.2V
+ _36V
100k
R₈ 1N4934
8
D₆
+ ₁₀₀
C₅
+ _1.6V
6.7V
5
22k
R₅
T
UVLO
+ _10V
Timer R
RS
Latch
Multiplier
16V
10
Drive
7
10
Output
10
R₆
4
+ ^{Error Amp}
0.5mA
V_ref
330 R₄
1.0nF
C₃
1
2
MUR130
D₅
MTP
8N50E
V_O
+
100
230V/
0.35A
C₄
Q₁
1.0M
R₂
0.1
R₉
11k
R₁
0.68
C₁
Power Factor Controller Test Data
AC Line Input
Current Harmonic Distortion (%)
V_rms
P_in
PF THD
2
3
5
7
V_O(pp)
90
85.6 −0.998 2.4
0.11 0.52
1.3
0.67 10.0
100 85.1 −0.997 5.0 0.13 1.7
2.4
1.4
10.1
110 84.8 −0.997 5.3 0.12 2.5
2.6
1.5
10.2
120 84.5 −0.997 5.8 0.12 3.2
2.7
1.4
10.2
130 84.2 −0.996 6.6 0.12 4.0
2.8
1.5
10.2
138 84.1 −0.995 7.2 0.13 4.5
3.0
1.6
10.2
This data was taken with the test set−up shown in Figure 17.
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 of 320 μH
Heatsink = AAVID Engineering Inc. 5903B, or 5930B
DC Output
V_O
I_O
P_O
230 0.350 80.5
230 0.350 80.5
230 0.350 80.5
230 0.350 80.5
230 0.350 80.5
230 0.350 80.5
n(%)
94.0
94.6
94.9
95.3
95.6
95.7
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