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TNY253P Datasheet(PDF) 1 Page - Power Integrations, Inc.

Part # TNY253P
Description  Energy Efficient, Low Power Off-line Switchers
Download  18 Pages
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Manufacturer  POWERINT [Power Integrations, Inc.]
Direct Link  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

TNY253P Datasheet(HTML) 1 Page - Power Integrations, Inc.

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February 2012
Figure 1. Typical Standby Application.
ORDER
PART
NUMBER
85-265
VAC
230 VAC or
115 VAC
w/Doubler
Product Highlights
Lowest Cost, Low Power Switcher Solution
• LowercostthanRCC,discretePWMandotherintegrat-
ed/hybridsolutions
• Costeffectivereplacementforbulkylinearadapters
• Lowestcomponentcount
• SimpleON/OFFcontrol–noloopcompensationdevices
• Nobiaswinding–simpler,lowercosttransformer
• AllowssimpleRCtypeEMIfilterforupto2Wfrom
universalinputor4Wfrom115VACinput
Extremely Energy Efficient
• Consumesonly30/60mWat115/230VACwithnoload
• MeetsBlueAngel,EnergyStar,Energy2000and200mW
Europeancellphonerequirementsforstandby
• Saves$1to$4peryearinenergycosts(at$0.12/kWHr)
comparedtobulkylinearadapters
• Idealforcellularphonechargers,standbypowersuppliesfor
PC,TVandVCR,utilitymeters,andcordlessphones.
High Performance at Low Cost
• High-voltagepowered–idealforchargerapplications
• Veryhighloopbandwidthprovidesexcellenttransient
responseandfastturnonwithpracticallynoovershoot
• Currentlimitoperationrejectslinefrequencyripple
• Glitchfreeoutputwheninputisremoved
• Built-incurrentlimitandthermalprotection
• 44kHzoperation(TNY253/4)withsnubberclamp
reducesEMIandvideonoiseinTVsandVCRs
• Operateswithoptocouplerorbiaswindingfeedback
Description
TheTinySwitchfamilyusesabreakthroughdesigntoprovide
thelowestcost,highefficiency,off-lineswitchersolutionin
the0to10Wrange.Thesedevicesintegratea700Vpower
MOSFET, oscillator, high-voltage switched current source,
currentlimitandthermalshutdowncircuitry.Theystart-up
andrunonpowerderivedfromtheDRAINvoltage,eliminat-
ingtheneedforatransformerbiaswindingandtheassociated
circuitry.Andyet,theyconsumeonlyabout80mWatnoload,
from265VACinput.AsimpleON/OFFcontrolschemealso
eliminatestheneedforloopcompensation.
TNY253P
TNY254P
TinySwitch Selection Guide
PACKAGE
DIP-8
DIP-8
SMD-8
SMD-8
TNY253G
TNY255P
0-2 W
1-4 W
0-4 W
2-5 W
TNY255G
DIP-8
TNY254G
SMD-8
3.5-6.5 W
4-10 W
TheTNY253andTNY254switchat44kHztominimizeEMI
andtoallowasimplesnubberclamptolimitDRAINspike
voltage.Atthesametime,theyallowuseoflowcostEE16core
transformerstodeliverupto5W.TheTNY253isidenticalto
TNY254exceptforitslowercurrentlimit,whichreducesoutput
short-circuit current for applications under 2.5W.TNY255
useshigherswitchingrateof130kHztodeliverupto10W
fromthesamelowcostEE16coreforapplicationssuchasPC
standbysupply.AnEE13orEF13corewithsafetyspaced
bobbincanbeusedforapplicationsunder2.5W.Absenceof
abiaswindingeliminatestheneedfortaping/marginsinmost
applications,whentripleinsulatedwireisusedforthesecondary.
Thissimplifiesthetransformerconstructionandreducescost.
PI-2178-022699
Wide-Range
High-Voltage
DC Input
TinySwitch
D
S
EN
BP
+
+
DC
Output
Table 1. *Please refer to the Key Application Considerations section
for details.
Recommended Range
for Lowest System Cost*
TNY253/254/255
TinySwitchFamily
Energy Efficient, Low Power Off-line Switchers


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