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pfm smps
Dear eem2am
I think you do need study some basic knowledge about peak current mode controlled SMPS.I suggest two for you reading:
1.R. W. Erickson_fundamentals_of_power_electronics
2.R. B. Ridley, “A New, Continuous-Time Model for Current-Mode
Control,” IEEE Trans. on Power...
control loop compensation
LED driver is essentially a constant current source.
In peak current mode controlled buck,If send a fixed error voltage to PWM comparator,we can easily get a constant averaged output current.
The averaged output current depends on the switching frequency,output...
smps loop compensation
No
the HV9910B operates in open loop current mode control.There is no closed voltage loop,no voltage feedback,So no voltage loop compensation need.
But if HV9910B is in Peak current mode control,the inner slope-cpmpensation must add when duty>50% in CCM.
PFM SMPS need no...
Hi:
SIMPLIS (SIMulation for Piecewise-LInear System) is a computer software package specifically designed for the simulation and analysis of switching power supplies.
SIMPLIS has a small-signal frequency-domain analyzer specifically designed for
the analysis of switching piecewise-linear...
tps61165 c code
Hi aryajur:
The offset of E/A can be seen as disturbances or distortions.
But it is in the loop of negative feedback.
Feedback reduces the line-to-output transfer function by a factor of 1/(1+LG)
LG is open loop gain.
if dc of LG is 60dB,the offset of E/A could reduce 1/1000.
So...
1.L=200mH maybe too small.
try L=1TH and C=1TF to cut off AC loop.
2.AC source change to AC=1,So only read node 2(here "2" is another end of inductor) voltage can get open loop gain and phase(bode plot).
b/r
You can refer this document for simple theory and seek some Chip application notes and datasheet using Google,like LM1770 LM3100.
For the large input voltage range,You could change the Constant-on time according to the input voltage adaptively and keep the switching frequency pseudo-constant.
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