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90 SPM2006 (3/06)
HIGH FREQUENCY PLANAR
TRANSFORMERS
PA08XX Series (up to 140W)
Single Winding Tapped Winding Dual Winding
Turns 1T 2T 3T 4T 1:1 1:2 1:3 2:2 1T & 1T 1T & 2T
DCR
(mΩΩ)0.44 1.3 3.5 7 1.3 3.5 7 7 1.3 3.5
4T 10 PA0806 PA0806 PA0811 PA0801 PA0806 PA0811 PA0801 PA0801 PA0806 PA0811
5T 12.5 PA0808 PA0808 PA0813 PA0803 PA0808 PA0813 PA0803 PA0803 PA0808 PA0813
6T 15 PA0810 PA0810 PA0815 PA0805 PA0810 PA0815 PA0805 PA0805 PA0810 PA0815
8T 40 PA0806 PA0806 PA0811 PA0801 PA0806 PA0811 PA0801 PA0801 PA0806 PA0811
9T 45 PA0807 PA0807 PA0812 PA0802 PA0807 PA0812 PA0802 PA0802 PA0807 PA0812
10T 50 PA0808 PA0808 PA0813 PA0803 PA0808 PA0813 PA0803 PA0803 PA0808 PA0813
11T 55 PA0809 PA0809 PA0814 PA0804 PA0809 PA0814 PA0804 PA0804 PA0809 PA0814
12T 60 PA0810 PA0810 PA0815 PA0805 PA0810 PA0815 PA0805 PA0805 PA0810 PA0815
4T/4T 20/20 PA0806 PA0806 PA0811 PA0801 PA0806 PA0811 PA0801 PA0801 PA0806 PA0811
4T/5T 20/25 PA0807 PA0807 PA0812 PA0802 PA0807 PA0812 PA0802 PA0802 PA0807 PA0812
5T/5T 25/25 PA0808 PA0808 PA0813 PA0803 PA0808 PA0813 PA0803 PA0803 PA0808 PA0813
5T/6T 25/30 PA0809 PA0809 PA0814 PA0804 PA0809 PA0814 PA0804 PA0804 PA0809 PA0814
6T/6T 30/30 PA0810 PA0810 PA0815 PA0805 PA0810 PA0815 PA0805 PA0805 PA0810 PA0815
PA08XX Transformer Winding Configuration Matrix
The following is a matrix of the winding configurations that are
possible with the Pulse PA08XX Planar Transformer Platform.
The package is typically capable of handling between 80-140W of
power depending on the application, ambient conditions and
available cooling. Once a configuration is selected, the formulae
and charts can be used to determine the approximate power
dissipation and temperature rise of the component in a given
application.
NOTES:
1. The primary inductance for any configuration can be calculated as:
Primary Inductance (µH MIN) = 2.4 * (Primary_Turns)
2
2. The above base part numbers (PA08XX) are available from stock.
3. It is possible to add a small gap to the transformer. Gapped transformers are non-standard and can be made available upon
request, but are not typically available from stock. To request a gapped version of the transformer, add a suffix 'G' to the base
number (ie: PA0801Gor PA0801.004Getc.). The nominal inductance with the a gap can be calculated as:
Primary Inductance (µH nominal) = 0.69 * (Primary Turns)
2
4. It is possible to add a primary side aux. winding to any of the above configurations as shown in the schematics. Transformers with
primary side aux. windings are non-standard and can be made available upon request, but are not typically available from stock.
The primary aux. winding can be between 2 and 16 turns. To add a primary aux. winding to a given base, use the extension .0XX.
For example, to add a 4T aux. winding to the base part number PA0801, use the part number PA0801.004. To add a 16T aux.
winding, use the part number PA0801.016.
5. Optional Tape & Reel packaging can be ordered by adding a "T" suffix to the complete part number (i.e. PA0801 becomes
PA0801Tfor no AUX - PA0801.009 becomes PA0801T.009Tfor 9T AUX). Pulse complies to industry standard tape and reel
specification EIA481.
PRIMARY WINDINGS
SECONDARY WINDINGS
Single WindingDual Winding