MC34261P View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
MC34261P Datasheet PDF : 12 Pages
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MC34261 MC33261
Figure 16. 175 W Universal Input Power Factor Controller
85 to 265 RFI
Vac Filter
1 C6
D2 D4
D1 D3
1.3M
R7
0.01
12k 3
C2
R3
Delay
Zero Current
Detector
+
1.2V
+ 1.6V
+ 36V
6.7V
100k
R8 1N4934
8
D6
+ 100
C5
5 22k
R5
T
2.5V
Reference
Timer R
RS
Latch
UVLO
+ 10V
16V
10
Drive
7
10
Output
10
R6
MUR460
D5
VO
+ 400V/0.44A
MTW
14N50E
180
C4
Q1
Current Sense
Comparator
Multiplier
6
4
+ Error Amp
0.5mA
Vref
330 R4
1.0nF
C3
1
2
1.6M
R2
0.1
R9
10k
R1
0.68
C1
Power Factor Controller Test Data
AC Line Input
Current Harmonic Distortion (%)
Vrms Pin
PF THD
2
3
5
90 187.5 –0.998 2.0 0.10 0.98 0.90
120 184.6 –0.997 1.8 0.09 1.3
1.3
138 183.6 –0.997 2.3 0.05 1.6
1.5
180 181.0 –0.995 4.3 0.16 2.5
2.0
240 179.3 –0.993 6.0 0.08 3.7
2.7
268 178.6 –0.992 6.7 0.16 2.8
3.7
This data was taken with the test set–up shown in Figure 17.
T = Coilcraft N2880–A
Primary: 78 turns of # 16 AWG
Secondary: 6 turns of # 18 AWG
Core: Coilcraft PT4215, EE 42–15
Gap: 0.104″ total for a primary inductance of 870 µH
Heatsink = AAVID Engineering Inc. 5903B
7
VO(pp)
0.78
8.0
0.93
8.0
1.0
8.0
1.2
8.0
1.4
8.0
1.7
8.0
DC Output
VO
400.7
400.7
400.7
400.6
400.6
400.6
IO
0.436
0.436
0.436
0.436
0.436
0.436
PO
174.7
174.7
174.7
174.7
174.7
174.7
n(%)
93.2
94.6
95.2
95.6
97.4
97.8
MOTOROLA ANALOG IC DEVICE DATA
9
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