www.precision-inc.com
1800 FREEWAY BOULEVARD
MINNEAPOLIS, MN 55430
PHONE: 1-800-749-3677
FAX: 763-561-9050
PFC Inductor
Power Factor Correction
Features:
•Available for use in power ratings from 200W to 1000W.
•Operate with controllers from several IC manufacturers.
•Range from 1000µH to 100µH under full load, and are designed for 100kHz operation.
•Designed using the industry standard input voltage range 85VAC - 385VAC at 50/60Hz.
•Use a toroidal geometry to allow the use of thicker wire to decrease DCresistance and
yield higher current capacity.
•Use industry standard vertical through-hole mounting configurations and have an
operating temperature range of –20°C to +105°C.
General Information
Physical Dimension
Precision works with its customers to optimize a PFC solution for any
specific application. In many cases, audible noise is not a problem. For
example, when the power supply is housed in an enclosure with forced
air, the PFC Inductor noise is not detectable and allows a lower cost
solution. Also, if size is not the highest priority, there are many available
options.
Figure 1
B
A
F
Power factor is the ratio of the real power to apparent power. Power
factor can vary between 0 and 1, and can be either inductive (lagging,
pointing up) or capacitive (leading, pointing down). In order to reduce a
capacitive (or leading) power factor, an inductor is added to make the
power factor equal 1. The whole purpose of making the power factor
equal to one is to make the circuit look purely resistive (apparent power
equal to real power).
cision Part
Number
Electrical
Precision
Model
Number
Output
Inductance Inductance Ipeak
Iripple,
Irms
Power
@0A (µH) @Ipeak (µH) (Amps) p-p (Amps) (Amps)
(Watts)
F
1
C
Precision
Model
Number
Fig.
Num
4.2
1.1
2.6
PFC-01101-00
1
PFC-01102-00
300
810
460
6.2
1.6
3.9
PFC-01102-00
1
PFC-02301-00
400
570
375
8.3
2.2
5.1
PFC-02301-00
1
PFC-04302-00
PFC-05301-00
PFC-05302-00
PFC-05303-00
600
430
700
300
800
1000
260
220
250
220
185
148
10.4
12.5
14.5
16.6
20.8
2.7
3.2
3.8
4.3
5.4
6.4
7.7
9
10.3
12.8
4
D
A
830
310
E
1.80
1980
460
4
Figure 2
200
500
4
3
BOTTOM VIEW
D
PFC-01101-00
PFC-04301-00
E
C
Precision can provide additional windings on the PFC Inductor to supply
power for the PFC control circuitry. Using a voltage doubler circuit with
this bias winding provides a semi-regulated output that is quite stable
over the entire duty cycle range.
1
2
1
PFC-04301-00
2
PFC-04302-00
2
PFC-05301-00
2
PFC-05302-00
PFC-05303-00
2
2
A
(max)
B
(max)
C
(max)
F
D
E
+.015/
± .005 ± .005
.005
in
1.67
.80
1.77
.050
.60
.90
mm
42.5
20.3
45
1.3
15.2
22.9
in
1.67
.80
1.77
.050
.60
.90
mm
42.5
20.3
45.0
1.3
15.2
22.9
1.20
in
2.00
.90
2.10
.050
.70
mm
50.8
22.9
53.3
1.3
17.8
30.5
in
2.24
1.30
2.31
.040
1.05
1.60
mm
56.9
33.0
58.7
1.02
26.7
40.64
in
2.24
1.30
2.31
.045
1.05
1.60
mm
56.9
33.0
58.7
1.14
26.7
40.64
1.70
in
2.75
1.40
2.82
.057
1.10
mm
69.9
35.6
71.6
1.45
27.9
43.2
in
2.75
1.40
2.82
.064
1.10
1.70
mm
69.9
35.6
71.6
1.63
27.9
43.2
in
2.75
1.40
2.82
.064
1.10
1.70
mm
69.9
35.6
71.6
1.63
27.9
43.2