P604.A (7/04)
US 858 674 8100
UK 44 1483 401 700
France 33 3 84 35 04 04
Singapore 65 6287 8998
Taiwan 886 2 2698 0228
Hong Kong 852 2788 6588
http://www.pulseeng.com
HIGH FREQUENCY PLANAR
TRANSFORMERS
Prism Series (up to 250W)
Power Rating: up to 250W
Height: 9.3mm to 10.4mm Max
Footprint: 29.5mm x 25.4mm Max
Frequency Range: 200kHz to 700kHz
Part
Turns Ratio
Primary
2
Primary
Leakage**
DCR (m
MAX)
Maximum
Number
Secondary
Inductance
Inductance
Primary
Primary
Secondary
Height
Primary
Secondary
Isolation
(H MIN)
(H MAX)
A
Aux.
(mm)
D
OUBLE
I
NTERLEAVE
D
ESIGNS
(H
IGHER
E
FFICIENCY
, L
OWER
DCR
AND
L
OWER
L
EAKAGE
)
PA0526
5T (with 5T Aux.)
1T & 1T
1500Vdc
85
--
7.5
235
.56 & .56
10.2
Basic
PA0550
5T (with 5T Aux.)
2T:2T
1500Vdc
85
--
7.5
235
2.25 & 2.25
10.2
Basic
S
INGLE
I
NTERLEAVE
D
ESIGNS
(L
OWER
C
OST
)
PA0442
5T (with 5T Aux.)
2T:2T
1500Vdc
85
1.5
14.5
465
1.7 & 1.7
9.3
Basic
PA0576
6T (with 2T Aux.)
2T & 1T
1500Vdc
130
0.25
21.5
155
1.8 & 0.6
9.3
Basic
PA0581
6T (with 2T Aux.)
7T & 7T
1500Vdc
102
--
21.5
155
40 & 40
9.3
Basic
Notes: **Leakage inductance is measured with both primary windings connected in series (where applicable) with the secondary windings shorted.
Electrical Specifications @ 25C -- Operating Temperature - 40C to +125C
*H - Maximum Height (see table above)
**This dimension is 1.195/30.35 for PN PA0581
SUGGESTED PAD LAYOUT
6
1
7
11
.110
2,79
6X
1.050
26,67
.130
3,30
5X
.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
H*
.005/0,13
10 SURFACES
PA05XX
PA0442
Date Code
Country of Origin
1.000
25,40MAX
6
.074
1,88
5X
SHAFT
.100
2,54
5X
FOOT
1
7
11
1.160**
29,46
MAX
.047
1,19
5X
SHAFT
.080
2,03
5X
FOOT
Mechanical
Weight ..................19.8 grams
Tray .............................30/tray
Dimensions: Inches
mm
Unless otherwise specified, all tolerances are .010
0,25
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.
S I N G L E I N T E R L E AV E S C H E M AT I C S
D O U B L E I N T E R L E AV E S C H E M AT I C S
PA0526
10
11
1T
7
8
1T
2
4
5T Pri
1
6
5T AUX
PA0550
8
9
1T
7
1T
10
11
1T
1T
2
4
5T Pri
1
6
5T AUX
PA0442
5T Pri
2
4
1
6
5T AUX
9
2T
7
11
2T
2
4
8
9
1T
PA0576
7
1T
1
6
10
11
1T
6T Pri
2T AUX
PA0581
10
11
7T
7
8
7T
2
4
6T Pri
1
6
2T AUX
Schematics
HIGH FREQUENCY PLANAR
TRANSFORMERS
Prism Series (up to 250W)
P604.A (7/04)
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. Other winding configurations are available.
Please contact Pulse Power Applications Engineering for more
information.
2. To determine if the transformer is suitable for your application,
it is necessary to ensure that the temperature rise of the
component (ambieint plus temperature rise) does not exceed
its operating temperature. To determine the approximate tem-
perature rise of the transformer, refer to the graphs below.
Notes from Tables
Temperature Rise vs. Power (W) Dissipation
Total Power (W) Dissipation
Total Power Dissipation (W) = .001 * (DCRprimary * Irms_primary
2
+ DCRsecondary * Irms_secondary
2
) + Core Loss (W)
T
emperature Rise (
C)
0
20
40
60
80
100
120
0
1
2
3
4
5
6
7
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
For More Information :
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product
names mentioned herein may be trademarks or registered trademarks of their respective owners.
Printed on recycled paper. 2004, Pulse Engineering, Inc. All Rights Reserved.
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TEL: 858 674 8100
FAX: 858 674 8262
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Hsi-Chih, Taipei Hsien
Taiwan, R.O.C.
Tel: 886 2 2698 0228
FAX: 886 2 2698 0948
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(Southern Asia)
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#07-01/02
KA Centre
Singapore 368324
TEL: 65 6287 8998
FAX: 65 6280 0080
HONG KONG
(China/Hong Kong)
9/F, Phase 2, Tai Sang
Shatin Warehouse Centre
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FAX: 852 2776 1055
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