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Design Better Power Supply

Design Better Power Supply. It’s Free . . . . It’s on-line It’s for everyone Worldwide access 100% server side simulation It’s FREE!!. Free accounts from sponsors. Some sponsors provide a full features PowerEsim for public user. . Your private free account .

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Design Better Power Supply

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  1. Design Better Power Supply

  2. It’s Free . . . • It’s on-line • It’s for everyone • Worldwide access • 100% server side simulation • It’s FREE!!

  3. Free accounts from sponsors • Some sponsors provide a full features PowerEsim for public user.

  4. Your private free account • User can apply for a 7 days private free full features account by email address.

  5. I/P Votlage Vs Efficiency % Input Votlage Vs Efficiency % 100.00 100.00 90.00 90.00 80.00 80.00 70.00 70.00 60.00 60.00 50.00 50.00 40.00 40.00 30.00 30.00 20.00 20.00 10.00 160W PFC Input Voltage Vac 10.00 0.00 150W flybackInput Votlage Vdc 0.00 300 350 405 85 110 230 265 It’s highly accurate

  6. Find MOSFET Find Diode Find Capacitor Find Core Find Wire No expert knowledge needed PowerEsim need Traditional design need • Rds*Crss • Vf*trrm • CV • k1, k2, k3 • Current density • No equations needed! • Simple pick and place components • Or build real Xformer in virtual space

  7. PowerEsim vs Traditional Design PowerEsim turn design into result oriented adaptive iteration instead of skill of knowledge application

  8. Start a design – Design from Reference • Find a circuit that has closest specification to your need, e.g. 160W TDA4863 for PFC front end.

  9. Reference design will be loaded • Reference design will be loaded within a few seconds • No need to read application notes • Change component for your own requirements

  10. Remember, it’s other people design . . . As in a real bench, change Vo by changing feedback resistor to suit for your own output voltage requirement

  11. Or click the main MOSFET • Select other component for cost or performance reasons.

  12. Re-define specification • Click “Detail Spec.” • Change specification as you like

  13. Start a design - Ask our expert • Enter the simple input & output specification • Chose an application • Click “Recommend Design”

  14. Search for best topologies Specification How our expert inside the server work Search for closest reference design • Fuzzy logic is used to rank the topologies or reference design according to user’s requirements

  15. Start a design - more freedom • Click “Topologies” • Chose the topology you like • Then chose for PWM controller too

  16. Chose a PWM controller circuit • Double click the PWM block • Select the PWM controller • Another PWM circuit will appear

  17. Finally . . . Enter the input and output specification then click “Initialize Design”

  18. Preliminary 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 • Click LosseSIM

  19. Losses and it’s details • Loss Analysis – the first page to click • It give total losses at a practical operating condition • It also shows losses breakdown at each component

  20. Losses and operating conditions From To Vin 85 V 240 V Io 3.75 A 2 A Pd 14.7 W 7.7 W

  21. The most important page • Component Finder – Best optimize tool for cost and performance

  22. Change the range • Extend the range can select more suitable components • Choose different Manufacturer can refine the list too

  23. Click, click, click and select • A particular one – total & individual loss • Highlighted one – total, individual loss and stress • Selected one – total individual loss and stress

  24. Other than loss, Stress is important

  25. How we model component?

  26. Features are same for all component

  27. More clever method – Smart Optimizer Click “Select All” All MOSFET will dump into a optimizer pool

  28. Smart Optimizer – just a click • Enter maximum iterations • Wait a few seconds • Click “Smart Optimizer”

  29. Multi dimensional optimization 10 resistor 1 x 10 MOSFET 2 x : : x 10 10 diode = 1010 combination = 31 years simulation

  30. Smart Optimizer – how it work Data set Smart Scan Search for good component Genetic Algorithm BU60 BU60 SPD07N60C3 SPD07N60C3 SPN04N60C2 SPN04N60C2 SPB07N60S5 SPB07N60S5 IPP50R520CP IPP50R520CP

  31. Sorted one by one • Result will be ranked • Click to view each result • Optimized Component will be shown

  32. Diode or Active Diode • Click the diode you like to replace by Active Diode or Sync Rect. • In the Component Finder, change it’s “Rectifier Type” to Active Diode

  33. Search more MOSFET • Extend to higher current range is usually needed • Extend the body diode’s trrm can find more MOSFET

  34. Select a better Sync Rect. • 0.5W Active Diode loss • 2.54W SCK loss

  35. Now click T1 and go to Magnetic Builder

  36. m=2 Proximity effect H Fringing flux Core losses Skin effect Background - What else we consider for a transformer Leakage inductance

  37. Magnetic Builder - Build a single transformer alone • User can build a single sand alone transformer by pressing the button “Magnetic Builder”

  38. Design a single Xformer – Where it apply? • Choose the application of the magnetic component, e.g. it is a “Flyback Xformer” or “Input Choke”

  39. Design a single Xformer – 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.

  40. Design a single Xformer – Full version Magnetic Builder • Click the “Advanced” button will go to the full version Magnetic Builder and do whatever you like.

  41. Any real core you like • Chose the range of Ae • Select Core shape • Select Manufacturer

  42. Instant preview winding when thing change • Click the “preview winding” • Corresponding winding cross section will be shown • Supported on Core, N and Wire.

  43. Seeking the best Lm • Click the “Inductance” button • Enter the range of inductance • Highlight each in the list, select according to total loss and stress. • Double check OCP is not be triggered.

  44. Find 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. • Double check OCP is not be triggered.

  45. No. of turn is not just an abstract number ! • Click the “Preview Winding” button • Observe how winding structure change with number of turn.

  46. Add more copper? • Click the “Change Wire” button • Click the “No. of Parallel Wire” • Add more parallel wire as you like.

  47. Copper foil can be used • Click the “Use copper foil” button • Enter the copper foil size

  48. Faraday 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.

  49. Arrange each winding layer you like

  50. The dot of a winding • User can define whether the winding is started at dot sign or not

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