USA 858 674 8100
Germany 49 7032 7806 0
Singapore 65 6287 8998
Shanghai 86 21 62787060
China 86 755 33966678
Taiwan 886 3 4356768
www.pulseeng.com 92 SPM2007 (5/10)
HIGH FREQUENCY PLANAR
TRANSFORMERS
PA09XXNL Series (up to 250W)
Power Rating: up to 250W
Height: 9.1mm to 10.4mm Max
Footprint: 29.5mm x 26.7mm Max
Frequency Range: 200kHz to 700kHz
Isolation (Primary to Secondary): 1750VDC
Part
Turns Ratio Primary* Leakage** DCR (m MAX) Maximum
Number Schematic Inductance Inductance
Primary Primary Primary Secondary Height
Primary Secondary (µH MIN) (µH MAX) A B Aux. (mm)
DOUBLE INTERLEAVE DESIGNS (HIGHER EFFICIENCY, LOWER DCR AND LOWER LEAKAGE)
PA0901NL 4T & 4T 216 0.3 13 13 —
PA0903NL 5T & 5T (w/5T aux) 340 0.3 15 15 235
PA0905NL 6T & 6T (w/2T aux) 4T A1 480 0.3 21 21 78 4.5 10.2
(1T:1T:1T:1T)
PA0907 7T & 7T (w/3T aux) 660 0.3 50 50 100
PA0909NL 8T & 8T 860 0.3 60 60 —
PA0908NL 4T & 4T 216 0.3 13 13 —
PA0910NL 5T & 5T (w/5T aux) 340 0.3 15 15 235
PA0912NL 6T & 6T (w/2T aux) 1T & 1T A2 480 0.3 21 21 78 0.56 & 0.56 10.2
PA0914NL 7T & 7T (w/3T aux) 660 0.3 50 50 100
PA0916 8T & 8T 860 0.3 60 60 —
SINGLE INTERLEAVE DESIGNS (LOWER COST)
PA0930 4T
54 0.3 13 — —
PA0931NL 5T (w/5T aux) 85 0.3 15 — 470
PA0932 6T (w/2T aux) 4T B1 120 0.3 21 — 156 4.5 9.1
(1T:1T:1T:1T)
PA0933 7T (w/3T aux) 165 0.3 50 — 200
PA0946 8T
215 0.3 60 — —
PA0934 4T
54 0.3 13 — —
PA0935 5T (w/5T aux) 85 0.3 15 — 470
PA0936 6T (w/2T aux) 7T & 7T B2 120 0.3 21 — 156 40 & 40 9.1
PA0937 7T (w/3T aux) 165 0.3 50 — 200
PA0947NL 8T
215 0.3 60 — —
PA0938 4T
54 0.3 13 — —
PA0939 5T (w/5T aux)
85 0.3 15 — 470
PA0940 6T (w/2T aux) 1T & 1T B2 120 0.3 21 — 156 1.12 & 1.12 9.1
PA0941 7T (w/3T aux)
165 0.3 50 — 200
PA0948 8T
215 0.3 60 — —
PA0942 4T
54 0.3 13 — —
PA0943NL 5T (w/5T aux)
85 0.3 15 — 470
PA0944 6T (w/2T aux) 2T & 1T B3 120 0.3 21 — 156 1.8 & 0.6 9.1
PA0945 7T (w/3T aux)
165 0.3 50 — 200
PA0949 8T
215 0.3 60 — —
Notes: *Inductance is measured, where applicable, with both primary windings connected in series (2 to 5, with 3 and 4 shorted).
**Leakage inductance is measured with both primary windings connected in series (where applicable) with all other windings shorted.
Electrical Specifications @ 25°C — Operating Temperature -40°C to +125°C
USA 858 674 8100
Germany 49 7032 7806 0
Singapore 65 6287 8998
Shanghai 86 21 62787060
China 86 755 33966678
Taiwan 886 3 4356768
www.pulseeng.com 93 SPM2007 (5/10)
HIGH FREQUENCY PLANAR
TRANSFORMERS
PA09XXNL Series (up to 250W)
PRI A
2
4
8
9
1T
B3
7
1T
1
6
PRI AUX
10
11
1T
B2
10
11
XT
7
8
XT
1
6
PRI AUX
2
4
PRI A
2
4
PRI A
B1
1
6
PRI AUX
8
9
1T
7
1T
10
11
1T
1T
SINGLE INTERLEAVE SCHEMATICS
DOUBLE INTERLEAVE SCHEMATICS
2
4
PRI A
A2
3
5
PRI B
1
6
PRI AUX
10
11
1T
7
8
1T
2
4
PRI A
A1
3
5
PRI B
1
6
PRI AUX
8
9
1T
7
1T
10
11
1T
1T
Schematics
Mechanical
Weight .................. 19.8 grams
Tray ............................. 30/tray
Dimensions: Inches
mm
Unless otherwise specified, all tolerances are ± .010
0,25
SUGGESTED PAD LAYOUT
6
1
711
.110
2,79
6X
Ø
1.050
26,67
.130
3,30
5X
Ø
.700
17,78
.600
15,24
.300
7,62
1.000
25,40
.160
4,06
.500
12,70
OPTIONAL
(For Mechanical
Connection
of Clips)
.063
1,60
.250
6,35
.625
15,88
PA090X
Date Code
Country of Origin
1.000
25,40MAX
6
.074
1,88
5X
Ø
SHAFT
.100
2,54
5X
Ø
FOOT
1
7
11
1.160
29,46
MAX
.047
1,19
6X
Ø
SHAFT
.080
2,03
6X
Ø
FOOT
H*
*H - Maximum Height
(see table above)
.005/0,13
10 SURFACES
NOTE: The above is a universal footprint for
a component that has all 11 pins populated.
For a given part number it is only necessary
to provide pads for the terminations shown in
the schematic below.
USA 858 674 8100
Germany 49 7032 7806 0
Singapore 65 6287 8998
Shanghai 86 21 62787060
China 86 755 33966678
Taiwan 886 3 4356768
www.pulseeng.com 94 SPM2007 (5/10)
HIGH FREQUENCY PLANAR
TRANSFORMERS
PA09XXNL Series (up to 250W)
Single Winding Tapped Winding Dual Winding
Turns 1T 2T 4T 1:1 1:3 2:2 1T & 1T
DCR
(m) 0.28 1.12 4.5 1.12 4.5 4.5 1.12
4T 5 PA0908 PA0908 PA0901 PA0908 PA0901 PA0901 PA0908
5T 7.5 PA0910 PA0910 PA0903 PA0910 PA0903 PA0903 PA0910
6T 12 PA0912 PA0912 PA0905 PA0912 PA0905 PA0905 PA0912
7T 30 PA0914 PA0914 PA0907 PA0914 PA0907 PA0907 PA0914
8T 20 PA0908 PA0908 PA0901 PA0908 PA0901 PA0901 PA0908
10T 30 PA0910 PA0910 PA0903 PA0910 PA0903 PA0903 PA0910
12T 48 PA0912 PA0912 PA0905 PA0912 PA0905 PA0905 PA0912
14T 120 PA0914 PA0914 PA0907 PA0914 PA0907 PA0907 PA0914
16T 140 PA0916 PA0916 PA0909 PA0916 PA0909 PA0909 PA0916
4T & 4T 20 PA0908 PA0908 PA0901 PA0908 PA0901 PA0901 PA0908
5T & 5T 30 PA0910 PA0910 PA0903 PA0910 PA0903 PA0903 PA0910
6T & 6T 48 PA0912 PA0912 PA0905 PA0912 PA0905 PA0905 PA0912
7T & 7T 120 PA0914 PA0914 PA0907 PA0914 PA0907 PA0907 PA0914
8T & 8T 140 PA0916 PA0916 PA0909 PA0916 PA0909 PA0909 PA0916
PA09XX Transformer Winding Configuration Matrix
The following is a matrix of the winding configurations that are
possible with the Pulse PA090X Planar Transformer Platform.
The package is typically capable of handling between 150-250W
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.
PRIMARY WINDINGS
SECONDARY WINDINGS
Single WindingDual Winding
High Efficiency Double Interleaved Designs
Single Winding Tapped Winding Dual Winding
Turns 1T 2T 3T 4T 7T 1:1 1:2 1:3 2:2 7:7 1T & 1T 1T & 2T 7T & 7T
DCR
(m) 0.56 2.24 3.4 4.5 20 2.24 3.4 4.5 4.5 80 2.24 4.5 80
4T 10 PA0938 PA0938 PA0942 PA0930 PA0934 PA0938 PA0942 PA0930 PA0930 PA0934 PA0938 PA0942 PA0934
5T 15 PA0939 PA0939 PA0943 PA0931 PA0935 PA0939 PA0943 PA0931 PA0931 PA0935 PA0939 PA0943 PA0935
6T 24 PA0940 PA0940 PA0944 PA0932 PA0936 PA0940 PA0944 PA0932 PA0932 PA0936 PA0940 PA0944 PA0936
7T 60 PA0941 PA0941 PA0945 PA0933 PA0937 PA0941 PA0945 PA0933 PA0933 PA0937 PA0941 PA0945 PA0937
8T 70 PA0948 PA0948 PA0949 PA0946 PA0947 PA0948 PA0949 PA0946 PA0946 PA0947 PA0948 PA0947 PA0947
PRIMARY
WINDINGS
SECONDARY WINDINGS
Single Winding
Lower Cost Single Interleaved Designs
NOTES:
1. The base PN (ie: PA0901) uses an ungapped core. The minimum primary inductance for any configuration can be calculated as:
Primary Inductance (µH Min) = 3.4 * (Primary Turns)2
2. The above base part numbers (PA09XX) 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:
PA0901NLG). The nominal inductance with a gap can be calculated as: Primary Inductance (µH Nominal) = 2.2 * (Primary Turns)2
USA 858 674 8100
Germany 49 7032 7806 0
Singapore 65 6287 8998
Shanghai 86 21 62787060
China 86 755 33966678
Taiwan 886 3 4356768
www.pulseeng.com 95 SPM2007 (5/10)
HIGH FREQUENCY PLANAR
TRANSFORMERS
PA09XXNL Series (up to 250W)
1. The above transformers have been tested and approved by
Pulse’s IC partners and are cited in the appropriate datasheet
or evaluation board documentation at these companies. To
determine which IC and IC companies are matched with the
above transformers, please refer to the IC cross reference on
the Pulse web page.
2. To determine if the transformer is suitable for your application,
it is necessary to ensure that the temperature rise of the
component (ambient plus temperature rise) does not exceed
its operating temperature. To determine the approximate
temperature rise of the transformer, refer to the graphs below.
3. The “NL” suffix indicates an RoHS-compliant part number. Non-
NL suffixed parts are not necessarily RoHS compliant, but are
electrically and mechanically equivalent to NL versions. If a part
number does not have the “NL” suffix, but an RoHS compliant
version is required, please contact Pulse for availability.
Notes from Tables
Temperature Rise vs. Power (W) Dissipation
Total Power (W) Dissipation
Total Power Dissipation (W) = .001 * (DCRprimary * I
RMS
_primary
2
+ DCRsecondary * I
RMS
_secondary
2
) + Core Loss (W)
Temperature Rise (°C)
0
20
40
60
80
100
120
01234567
Core Loss vs. Flux Density
Core Loss (W)
0.0
0.5
1.0
1.5
2.0
2.5
0 500 1000 1500 2000 2500
D
B (Gauss)
DB = 120E3 * Vin_min * Dutycycle_max / (Freq_kHz * Pri_Turns)
CoreLoss = 2.53E-13*(
D
B)
2.5
*(Freq_kHz)
1.8
3.0
100kHz
200kHz
300kHz
400kHz
500kHz
600kHz
700kHz
