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![Page 1: Speeding up transformer design through latest Web tool 29/Nov./2007 1 1 Speeding up transformer design through latest Web tool.](https://reader035.fdocuments.us/reader035/viewer/2022062801/56649e4e5503460f94b45a09/html5/thumbnails/1.jpg)
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Speeding up transformer design through latest Web tool
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The Web tool . . . The Web tool . . .
• It’s on-line
• It’s for everyone
• Worldwide access
• 100% server side simulation
• It’s FREE !!
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Free accounts from sponsorsFree accounts from sponsors
• Some sponsors provide a full features PowerEsim for public user.
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Your private free account Your private free account
• User can apply for a 7 days private free full features account by email address.
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It’s highly accurateIt’s highly accurateI/P Votlage Vs Efficiency %
0.0010.0020.0030.0040.0050.0060.0070.0080.0090.00
100.00
300 350 405
150W flybackInput Votlage Vdc
Input Votlage Vs Efficiency %
0.0010.0020.0030.0040.0050.0060.0070.0080.0090.00
100.00
85 110 230 265
160W PFC Input Voltage Vac
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No expert knowledge neededNo expert knowledge needed
• Find MOSFET
• Find Diode
• Find Capacitor
• Find Core
• Find Wire
Rds*Crss
Vf*trrm
CV
k1, k2, k3
Current density
PowerEsim Traditional Design
• No equations needed!
• Simple pick and place components
• Or build real Xformer in virtual space
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PowerEsim vs Traditional DesignPowerEsim vs Traditional Design
result oriented adaptive iteration
instead of
skill of knowledge application
PowerEsim turn design into
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Designing a power supply - Ask our expertDesigning a power supply - Ask our expert
• Enter the input & output specification
• Chose an application
• Click “Recommend Design”
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How our expert inside the server workHow our expert inside the server work
Specification Search for closest reference design
Search for best topologies
• Fuzzy logic is used to rank the topologies or reference design according to user’s requirements
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Chose a PWM controller circuitChose a PWM controller circuit
• Double click the PWM block• Select the PWM controller• Another PWM circuit will appear
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Preliminary design will be initializedPreliminary design will be initialized
• Preliminary design of real components will be initialized within a few seconds
• A virtual power supply is on the your bench
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Now click T1 and go to Magnetic BuilderNow click T1 and go to Magnetic Builder
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dvHI
uL
k
ok
2
H
Background Background - - What else we consider for a transformerWhat else we consider for a transformer
Leakage inductanceLeakage inductance
coscosh
sinsinh12 2
mPd
m=2
Proximity effectProximity effect
meterfu
Do
skin
Skin effectSkin effect
skinD
d
2
wire
wirewire dlBf
Pd
42
Fringing flux Fringing flux
22
321
Bfd
B
c
B
b
B
af
VolPd
kkk
Core lossesCore losses
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Magnetic Builder Magnetic Builder - - Build a single transformer aloneBuild a single transformer alone
• User can build a single sand alone transformer by pressing the button “Magnetic Builder”
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Design a single Xformer – Where it apply?Design a single Xformer – Where it apply?
• Choose the application of the magnetic component, e.g. it is a “Flyback Xformer” or “Input Choke”
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Design a single Xformer – Design a single Xformer – Operating conditions?Operating conditions?
• Enter the simple operating condition of the application, e.g. the operating condition of the “Flyback converter”
• Press “Recommend Design,” a preliminary Xformer with core, wire, tape and winding sequence, will be recommended.
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Design a single Xformer – “Design a single Xformer – “Recommended DesignRecommended Design””
• A preliminary transformer of real construction is ready to be edit and refine.
• This page is a simplified version of the Magnetic Builder.
• Excellent for quick design purpose.
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Design a single Xformer – Design a single Xformer – Full version Magnetic BuilderFull version Magnetic Builder
• Click the “Advanced” button will go to the full version Magnetic Builder and do whatever you like.
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First thing to design a XformerFirst thing to design a Xformer
• First thing to do - Select the varnish and UL insulation system first, of course.
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Any real core you likeAny real core you like
• Chose the range of Ae
• Select Core shape
• Select Manufacturer
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Instant preview winding when thing changeInstant preview winding when thing change
• Click the “preview winding”
• Corresponding winding cross section will be shown
• Supported on Core, N and Wire.
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Seeking for the best LmSeeking for the best Lm
• Click the “Inductance” button
• Enter the range of inductance
• Highlight each in the list, select according to total loss and stress.
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Find the best number of turnFind the best number of turn
• Click the “Number of turn” button
• Enter the range of turn
• Highlight each in the list, select according to total loss and stress.
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No. of turn is not just an abstract number !No. of turn is not just an abstract number !
• Click the “Preview Winding” button
• Observe how winding structure change with number of turn.
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Add more copperAdd more copper
• Click the “Change Wire” button
• Click the “No. of Parallel Wire”
• Add more parallel wire as you like.
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Copper foil can be usedCopper foil can be used
• Click the “Use copper foil” button
• Enter the copper foil size
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Faraday shield can be addedFaraday shield can be added• Click the “Add Pri Wdg” or “Add Sec Wdg” button
• Click the check box “Faraday Shield”
• Click the combo box W”x” to arrange for the layer of the Faraday shield
• You may go to “Winding Construction” page to further arrange for the shield.
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Arrange each winding layer you likeArrange each winding layer you like
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The dot of a windingThe dot of a winding
• User can define whether the winding is started at dot sign or not
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Where to startWhere to start
• User can define whether the winding is started at upper end or lower end of the winding layer
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How to wind a windingHow to wind a winding
• User can define the location of a winding at the center, lower part or upper part of the winding layer. Distribute the winding all over the layer is also possible.
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Layer to layer winding methodLayer to layer winding method
• A winding may occupy more than 1 layer. Choose “Tight” will ensure wires to full up all space in it’s layer before go to the next layer. Choose “Shared” will resulting in even distribution on each layers
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Inner tape between each layerInner tape between each layer
• Inner tape can be placed between each layer of Multi-layers winding.
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Customize different bobbins typeCustomize different bobbins type
• Thickness of each wall and the type of split bobbin can be defined in “Bobbin Setting”.
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You can make a transformer like this . .You can make a transformer like this . .
• You can change the number of wire used
• You can change the size of the wire
• You can control how you place the wire
• You can use copper foil to replace magnet wire
• You can split the bobbin
• You can add Faraday shield
• You can do anything you like . . . .
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Transformer drawing will be followedTransformer drawing will be followed
• Transformer drawing will be automatically generated by pressing the “Generate Drawing” button.
• Details testing methods, P/N, material can be edit before printing.
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Thermal – knowing Temp. at day 1Thermal – knowing Temp. at day 1
• May be the fastest and easiest thermal simulation tool for power supply. 5 s for a simulation only!!
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DVT – check the stressesDVT – check the stresses
• DVT Report check every components stress and also circuit design constraint.
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MTBF – how long it lastMTBF – how long it last
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Use thermal result check boxUse thermal result check box
• Once this check box is clicked, all simulation, e.g. DVT, MTBF, etc, will be base on junction Temp. from thermal simulation result, otherwise default value will be used
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Loop Analysis– how stable the systemLoop Analysis– how stable the system
• Gain and phase margin will be immediately known with after any change or circuit component
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Loop Analysis– transient loadingLoop Analysis– transient loading
• Define step loading waveform and corresponding output transient loading response will be shown
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Harmonic – Harmonic – knowing input current harmonics contentknowing input current harmonics content
• All input current parameters, e.g. PF, THD, harmonic content can be seen
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Waveform – Waveform – the least important toolsthe least important tools
• Critical component’s waveform will be illustrated
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BOM Builder – BOM Builder – BOM is always ready to print outBOM is always ready to print out
• BOM is always ready to print and will be updated automatically. It save a lot of preparing document time for engineer.
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Report Builder – Report Builder – Generate all document with a clickGenerate all document with a click
• Simple a click - All result from analysis or tools can be exported to Excel file for engineering documentation.
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Download – Download – a lot of document is ready to downloada lot of document is ready to download
• A lot of document and publication are ready to download. It is helpful to become a PowerEsim expert.
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We believe . . .We believe . . .