DER-37 datasheet(21/32 Pages) POWERINT

Part #	DER-37

Description	16W Low Profile Adapter Supply using TOP245P

PDF	32 Pages

Scroll/Zoom	100%

Manufacturer	POWERINT [Power Integrations, Inc.]

Direct Link	http://www.powerint.com

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21 / 32 page

DER-37

16W Adapter using TOP245P

April 27, 2004

Page 21 of 32

Power Integrations

Tel: +1 408 414 9200 Fax: +1 408 414 9201

www.powerint.com

11 Thermal Performance

11.1 Thermal measurements at max ambient

The power supply was placed inside a mock-up plastic case of the specified dimensions.

The case was placed inside a large closed carton box, and the carton was placed in an

oven. The carton box was to prevent airflow on the unit under test. The ambient

temperature was monitored inside the carton. The internal temperatures stabilized after

1 hour of continuous full load operation.

Temperature (

°C)

Item

90 VAC

265VAC

External Ambient

Bridge (BR1)

Transformer (T1)

Rectifier (D1)

120

122

TOP245P (U1)

110

112

11.2 Thermal margin test

As a test of thermal margin, the unit was operated at 10

o above max rated external

ambient, or 55

oC. The unit did not go into thermal shutdown. This implies plenty of

thermal margin.

DER-37 Datasheet(PDF) 21 Page - Power Integrations, Inc.