SELECTOR GUIDE
LINKSWITCH® DESIGNS
TINYSWITCH® DESIGNS
TOPSWITCH® DESIGNS
DPASWITCH® DESIGNS
CUSTOM LIBRARY
APPROVALS DATA
CONTACT
US
EMC FILTERS
& APPS NOTES
The
PI range of products perform extremely well for EMC measurements when
the recommended pcb layouts are followed. Our experience in common mode
and output filtering led to a range of standard, off the shelf, parts
listed below.
The common mode E cores have sufficient leakage inductance to assist with
differential mode noise. So from 7 – 60 watts this is the only inductive
primary component required.
Interestingly, when using the TinySwitch below 7 watts, EMC passes are
easily possible with a one mH inductor in a PI circuit.
Secondary side filtering is again straight forward with values from 3
mH to 10 mH.
One area we have expertise in is power factor correction (PFC). The link
below shows our standard range on a PDF. Usually PFC is required at power
levels above 75 watts.
| L rms |
Values |
Vin |
Filter Type |
Platform |
Part Number |
| 0.8A |
22 mH |
85-265 VAC |
Common Mode |
E20-CM |
094.916
|
| 0.6 A |
15 mH |
85-265 VAC |
Common Mode |
E16-CM |
093.259
|
| 0.5 A |
27 mH |
85-265 VAC |
Common Mode |
E16-CM |
093.267
|
| 0.4 A |
39 mH |
85-265 VAC |
Common Mode |
E16-CM |
093.551 |
|
0.28 A |
22mH |
85-265 VAC |
Common Mode |
E13/4CM |
071.923
|
| 0.26A |
27mH |
85-265 VAC |
Common Mode |
E13/4CM |
071.924
|
| 0.24A |
33mH |
85-265 VAC |
Common Mode |
E13/4CM |
071.925
|
| 0.8A |
330uH |
85-265 VAC |
Differntial |
8mm Drum |
034.619 |
| 1A |
220uH |
85-265 VAC |
Differential |
8mm Drum |
034.617 |
| 1.7A |
100uH |
85-265 VAC |
Differntial |
8mm Drum |
034.613 |
| 5.6A |
6.8uH |
0-60 V DC |
Output |
8mm Drum |
034.601 |
| 7.0A |
4.7uH |
0-60 V DC |
Output |
10mm Drum |
034.151
|
| 4A |
3.3uH |
0-60V DC |
Output |
8mm Drum |
036.242
|
| 3.4A |
4.7uH |
0-60 V DC |
Output |
8mm Drum |
036.238
|
| 3.3A |
6.8uH |
0-60V DC |
Output |
8mm Drum |
036.230
|
| 3.2A |
10uH |
0-60V DC |
Output |
8mm Drum |
036.401
|
|
|
PI Part |
Current rating |
Inductance |
Kaschke Part |
Platform |
|
Common Mode Choke |
TNY Family |
0.54A |
2 x 12mH |
071.921, |
E13/4 |
|
TNY Family |
0.28A |
2 x 22mH |
071.923, |
E13/4 |
|
|
TNY Family |
0.26A |
2 x 27mH |
071.924, |
E13/4 |
|
|
TNY Family |
0.24A |
2 x 33mH |
071.925, |
E13/4 |
|
|
TOP Family |
0.6A |
2 x 15mH |
093.259, |
E16 |
|
|
TOP Family |
0.5A |
2 x 27mH |
093.267, |
E16 |
|
|
TOP Family |
0.8A |
2 x 22mH |
094.916, |
E20 |
|
|
Filter Inductor |
|
I dc Max |
|
|
|
|
TNY/TOP |
3.4A |
4.7 uH Output Filter |
036.238, |
DR270 |
|
|
TNY/TOP |
3.3A |
6.8 uH Output Filter |
036.230, |
DR270 |
|
|
TNY/TOP |
3.2A |
10 uH Output Filter |
036.401, |
DR270 |
|
|
TNY 264 |
0.29A |
1 mH Input Filter |
036.425, |
DR270 |
.jpg)
Tel: +44 (0)1325 360718 Fax: +44 (0)1325 360719 Mob: +44(0)7739 175476