www.pulseeng.com

90

SPM2007 (11/07)

HIGH FREQUENCY PLANAR

TRANSFORMERS

PA08XXNL Series (up to 140W)

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. See the Spyglass transfomer matrix on the

next page for other winding configurations that can be made

available.

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.

Notes

Temperature Rise vs. Power (W) Dissipation

Total Power (W) Dissipation

0

20

40

60

80

100

120

01

2

3

4

5

6

7

Core Loss vs. Flux Density

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

0

500

1000

1500

2000

2500

100kHz

200kHz

300kHz

400kHz

500kHz

600kHz

700kHz

PRI A

PRI B

2

4

8

9

1T

PA0811 / 12 / 13 / 14 / 15

7

1T

3

5

1

6

PRI AUX

(optional)

10

11

1T

A3

2

4

PRI A

PA0806 / 07 / 08 / 09 / 10

3

5

PRI B

1

6

PRI AUX

(optional)

10

11

1T

7

8

1T

A2

2

4

PRI A

PA0801 / 02 / 03 / 04 / 05

3

5

PRI B

1

6

PRI AUX

(optional)

8

9

1T

7

1T

10

11

1T

1T

A1

Schematics