Wha's best strcuture of clock generator apply in SMPS

[mitgrace]

smps clock generator

Dear All :

I work on Buck regulator ,I need to design clock generator in my circuit . What's structure is good ? Ring oscillator , or R,C delay clock , Thanks

 

[batdin]

If you just need a clock,you can use one CMOS 4093 and one resistor and one capacitor in addition.The possibilities are numerous,this one is both cheap and simple.

 

[uladz55]

IMHO,

ring oscillator is more simple.
RC oscillator is more flexible.

 

[goodboy_pl]

I think all of SMPS Controller ICs have clock generators, currently up to 1 MHz frequency range.
if u need a central clock for module synchronization, u can use one SMPS Controller IC as master and other as slave!
BTW, most of commercial SMPS ICs use relaxation oscillators constructed with a schmitt triger, acapacitor and a resistor (resistor is normally replaced by a current source to generate more ideal saw tooth waveform and higher quality and more linear PWM).

BEST!