DER-40 Datasheet, PDF (9/30 Pages) Power Integrations, Inc. – 21W (45W peak) Multiple Output Power Supply using TOP246Y

DER-40
DVD/RW HDD PSU using TOP246Y
February 22, 2005
5.5 Rev 2 to Rev3 changes
OV/UV resistor from L pin was added to provide additional protection, using the
TOPSwitch-GX integrated under-voltage / over-voltage feature. The X-pin frequency
reduction circuit was also modified for improved margin.
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Changes
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RT1, RV1, R46, R38, R47, R37, R48, C28
Updated Gain/Phase plot
C7 from 47nF to 470nF
C21 from 10nF to 100nF
R6 from 18k to 68k
R7 from 16k to 3.6k
R27 from 470 to 82
VR6
Page 9 of 30
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