TOP245P_1 Datasheet, PDF (14/25 Pages) Power Integrations, Inc. – Title 32W (47W peak) Multiple Output supply

DER-19
TOP245P Multiple Output Set Top Box
March 30, 2004
AE
ALG
BM
BP
BAC
LG
LL
cm^2
nH/T^2
mTesla
mTesla
mTesla
mm
uHenries
LSEC
nHenries
Secondary
Parameters
NSx
Rounded Down NSx
Rounded
Down Vox
Volts
Rounded Up NSx
Rounded Up Volts
Vox
ODS Actual mm
Range
0.60
Core Effective Cross
Section Area
234
Gapped Core Effective
Inductance
207
Maximum Operating
Flux Density
267
Peak Flux Density
73
AC Flux Density for
Core Curves
0.28
Gap Length
17.7
Estimated Transformer
Primary Leakage
Inductance
20
Estimated Secondary
Trace Inductance
2.00
0.64 -
1.03
2.89
2
3.27
3
5.16
0.51 -
0.81
6.68 10.89 Secondary Number of
Turns
6 10 Rounded to Integer
Secondary Number of
Turns
10.62 18.17 Auxiliary Output Voltage
for Rounded to Integer
NSx
7 11 Rounded to Next
Integer Secondary
Number of Turns
12.51 20.05 Auxiliary Output Voltage
for Rounded to Next
Integer NSx
0.25 -
0.40
0.20 - Secondary Actual Wire
0.32 Diameter Range
Comment: Wire
diameter is greater than
recommended
maximum (0.40 mm)
and may overheat.
Tip: Consider a parallel
winding technique
(bifilar, trifilar), increase
size of transformer
(larger BW), reduce
margin (M).
Power Integrations, Inc.
Tel: [phone] Fax: [phone]
www.powerint.com
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