Search:

Type: Posts; User: res_smps

Page 1 of 6 1 2 3 4

Search: Search took 0.01 seconds.

  1. maybe you can ask onsemi, i downloaded it from...

    maybe you can ask onsemi, i downloaded it from here https://www.onsemi.com/support/design-resources/tools?rpn=NCP1396
    I also got an error
  2. i don't know if this ncp1396 worksheet can be...

    i don't know if this ncp1396 worksheet can be used for ncp1395
    7130
  3. I think you can use the formula in Infineon...

    I think you can use the formula in Infineon (international rectifier) application note AN-1160 page 13 and put it in Excel
  4. Thread: SMPS with PFC

    by res_smps
    Replies
    42
    Views
    3,457

    Dear Silvio, yes, that also true. Thank you...

    Dear Silvio,

    yes, that also true. Thank you for the file, I also previously shared it here (zip files) in post #2

    please ignore the picture in post #41, there was an error
    7128
    cbulk value is...
  5. Thread: SMPS with PFC

    by res_smps
    Replies
    42
    Views
    3,457

    I think I have to correct this statement I...

    I think I have to correct this statement

    I thought the PFC frequency determined the size of the capacitor, I was wrong
    from the worksheet, capacitor requirements are not determined by the PFC...
  6. Replies
    40
    Views
    3,488

    I have never tried it because from simulations...

    I have never tried it because from simulations with resonant component values as installed, frequencies below 50khz will enter ZCS mode
  7. hi, please check this link...

    hi,

    please check this link
    https://id.b-ok2.org/s/?q=Switch+Mode+Power+Supplies
    there are many books about smps here
    please note that I only share links, not responsible for copyright issues
    ...
  8. Thread: SMPS with PFC

    by res_smps
    Replies
    42
    Views
    3,457

    What controller IC is used on this adapter? does...

    What controller IC is used on this adapter?
    does it work with a quasi resonant flyback?
  9. Replies
    40
    Views
    3,488

    update : I change inductane ratio Lm/Lr to...

    update :
    I change inductane ratio Lm/Lr to around 10
    the new parameter :
    Np : 16T
    Ns : 2x7T for +/- 70V
    CR 200 nF
    Lr 27 uH
    Lm 268 uH
    Lp 295 uH
  10. Thread: SMPS with PFC

    by res_smps
    Replies
    42
    Views
    3,457

    another mistake? 7104 maybe the error is only...

    another mistake?
    7104

    maybe the error is only in the schematic, i hope the pcb is correct
  11. Thread: SMPS with PFC

    by res_smps
    Replies
    42
    Views
    3,457

    and i think the feedback should go to pin2 (VFB)...

    and i think the feedback should go to pin2 (VFB) not to pin1 (COMP)
  12. Thread: SMPS with PFC

    by res_smps
    Replies
    42
    Views
    3,457

    I measured the inductance of this Sanken...

    I measured the inductance of this Sanken transformer which turned out to be quite small, I have never used it so I cannot comment further
    Lp : 152.8uH
    aux 9.68uH
    Ls (out) : 15.89uH
    7102

    I also...
  13. there are several libraries that can be used for...

    there are several libraries that can be used for halfbridge (LLC) simulations
    IR2153, post#14 of this thread...
  14. from what I observed most audio pro use igbt and...

    from what I observed most audio pro use igbt and igbt is suitable for zcs, works under resonant frequency.
    and i don't know why they choose zcs over zvs

    Now LLC seems to be more popular on TV...
  15. hi, there are 4 common types of resonant...

    hi,

    there are 4 common types of resonant converters
    1. SRC: used by most pro-audio, using IGBT working on ZCS (for example crown xti series), unregulated
    2. PRC
    3. LLC: widely used today for...
  16. Thread: SMPS with PFC

    by res_smps
    Replies
    42
    Views
    3,457

    Dear Silvio, First I clarify my statement...

    Dear Silvio,

    First I clarify my statement above that I do not need (interested) the PFC applies to me personally, not in general.

    from what I understand, reactive power only circulating in...
  17. Thread: SMPS with PFC

    by res_smps
    Replies
    42
    Views
    3,457

    Sorry Silvio, With the presence of PFC,...

    Sorry Silvio,
    With the presence of PFC, capacitor requirements can be smaller, I attach an excel file for PFC calculations (I downloaded from onsemi website) in post # 5
    I have never built /...
  18. Replies
    40
    Views
    3,488

    this is the waveform, i measured it using pcb V1...

    this is the waveform, i measured it using pcb V1 (post # 1)
    https://drive.google.com/drive/folders/1UA6K-lK1vEmXdeSdycBP-v_4cYAZewmD
    my oscilloscope is only dc coupling, so i added 100n capacitor...
  19. Replies
    40
    Views
    3,488

    It's okay, I will try to fix and improve one by...

    It's okay, I will try to fix and improve one by one
    I do this just for fun, not being chased by any target
  20. Replies
    40
    Views
    3,488

    the higher resonant frequency of my smps is 68kHz...

    the higher resonant frequency of my smps is 68kHz and the lower is around 30khz.
    my smps works with 50khz to 90khz variable switching frequency

    @microsim
    sorry I'm out of town now can't do the...
  21. Replies
    9
    Views
    938

    for your reference...

    for your reference https://drive.google.com/open?id=107cBCbHy8v-j4sYy5BS-08w6SwVhhn3e
    thank you
  22. Replies
    40
    Views
    3,488

    Thank you Microsim, I measure the voltage at...

    Thank you Microsim, I measure the voltage at resonant capacitor using voltage divider (1M and 10K if I remember correctly) then connect to my oscilloscope because my oscilloscope is only 80Vpp max...
  23. Replies
    40
    Views
    3,488

    thank you Silvio I hope this result is...

    thank you Silvio

    I hope this result is correct because I don't really trust the meter on the input.
    while at the output I use constant 89 (voltmeter) and sanwa DCM400AD(clamp meter)
  24. Replies
    9
    Views
    938

    Dear scarface, I can not say much about the...

    Dear scarface,

    I can not say much about the MCU because only ATMEL AVR that I know. and I have never made a system with that much power

    but if i have to choose i will choose to use a specific...
  25. Dear silvio, yes, i've seen the video...

    Dear silvio,

    yes, i've seen the video
    unfortunately I am bad at mechanical design
    and the cost of construction using a CNC machine is not cheap

    this is the progreess
    7069
    7070
    from this...
Results 1 to 25 of 144
Page 1 of 6 1 2 3 4