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Recent content by smartdream

  1. S

    How about the first job in designing power IC?

    At the system level, the loop stability is the most cared point, and then decide your implementation structure, and then the silicon circuits. just my point,thanx.
  2. S

    Best case and worst case

    it is greatly dependent on your circuits and your wanted purposes. but most of cases, it happens as your mentioned.
  3. S

    Constant-on time control mode buck!!!

    thank you all! any other description or materials?
  4. S

    Can I use such simple reference???

    large variations with process corners and temperatures, I think
  5. S

    Constant-on time control mode buck!!!

    Hey guy, very thanks for your kindly help, and the "helped me" has sent to you! and can you show me its operating theory? can any one throw me some bright light on it?
  6. S

    Constant-on time control mode buck!!!

    can anybody help? plzzzzzzzzzzz.....
  7. S

    PullUp and PullDown Resistor

    very clearly explaination, thanks!
  8. S

    Constant-on time control mode buck!!!

    constant on time buck Can any one post some papers/links about constant-on time control mode of buck converter, it is urgent for me, very very thanks in advance!
  9. S

    Digital PWM architecture?

    pwm architecture many thanx.
  10. S

    20°phase margin enough?

    I think it's enough for 20 degree if all conditions have been considered such as light load,full load, temperature,process corners and output capacitor and ESRs... Added after 2 minutes: can you upload the full material, the file you attached is seemed just 1 page of 34. is that right?
  11. S

    Looking for a paper by D.M. Monticelli

    a paper needed, can anybody help me?thanks in advance. D.M. Monticelli, “A quad CMOS single-supply opamp with rail-to-rail output swing”, IEEE J. of Solid-State Circuits, Vol. SC-21, pp. 1026- 1034, Dec. 1986.
  12. S

    help--How temperature affect the OPAMP's Gain and Bandwidth

    Hi all, How temperature affect the OPAMP's Gain and Bandwidth products? I'm greatly puzzled by this problem. thanks in advance.
  13. S

    pass device leakage current

    I also think it should be at largest Vin and lowest temp. under NO Load conditions.
  14. S

    About line regulation of LDO

    Generally, Line regulation is : ΔVout/ΔVin≈gmp*rop/(A*β)+ΔVref/(β*ΔVin) please check every factors to understand, good luck!
  15. S

    About line regulation of LDO

    ldo line regulation I don't think the Vout always rise when Vin increases, it will be determined your EA achitecture, it is a complex problem such as channel length modulation,offset and so on.

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