Talk:Boost converter

The present circuit analysis is one that I have not seen before. It seems to be a nice simplification. However, in its present form it is not easy to follow. I'd like to be able to divide the Circuit analysis section into three different areas: the present simpliied analysis, a more clasical analysis, and a presentation of the discontinuous operation. Also, some insight into the effects of parasitic elements (switch resistance, diode switching time, etc) would be helpful. Mak17f 00:18, 12 December 2005 (UTC)[reply]

I feel that the article should center on the concepts specific to boost converters. Discussion on items such as switching elements, discontinuous mode, and parasitics deviate from this concept. The items listed relate to dc-dc supplies in general and are best placed in either SMPS or dc-dc converters topics or should become topics on their own.GrantPitel 02:18, 13 December 2005 (UTC)[reply]

The circuit diagram is somewhat confusing, since it only has a single switch while the rest of the article talks about two switches.

In the power electronics realm, "switch" is used to mean the semiconductor devices (diodes, BJTs, SCRs, etc). In the diagram, the diode is a switch. I'll update the article to clarify. Mak17f 17:10, 10 March 2006 (UTC)[reply]

Parasitic Resistance

I've been staring at this article for a while now and can't understand the parasitic resistance calculations. If Rl is your DC inductor resistance then what is R. I'm trying to calculate Vo/Vin ratio. Any help would be much appreciated.

You're right, R is not defined in the article. It is the resistance of the load. I edited the article to introduce it. Is it clearer? CyrilB 09:33, 7 July 2006 (UTC)[reply]

++ Equation not rendering properly ++ An equation on about page five is not rendering. It displays:

I_o=\frac{V_i\cdot D\cdot T}{2L}\frac{V_i\cdot D}{V_o-V_i}=\frac{V_i^2\cdot D^2\cdot T}{2L\left(V_o-V_i\right)}

Is that the equation in section "Discontinuous mode", after "Replacing I_Lmax and δ by their respective expressions yields:" ? On my machine, it looks alright.CyrilB 20:56, 4 February 2007 (UTC)[reply]

Additional figures/simulations

I teach an introductory circuits lab, and I recently got a question about switchers, so I added some simulations to the course web site. If anyone here finds them useful, they can use them.

See Lab 3 of my ECE327 course web page:

http://www.ece.osu.edu/~pavlict/ece327/#lab_voltreg

There are three MATLAB sims (LC resonator, LC resonator with catch diode, and boost switcher) each with some sample results. The sims use ode45 to generate the results. --TedPavlic | talk 15:21, 17 April 2008 (UTC)[reply]

Continuous/Discontinuos mode boundary

There was a nice picture which depicted CCM/DCM boundary along with the text that depicted it, why was it edited out ?

--VEC7OR 84.15.124.117 (talk) 23:53, 24 July 2008 (UTC)[reply]

RF emission characteristics?

What is the RF spectrum emitted by the inductor? Is it a function of the other parameters of the circuit, or stochastic? Since there is a switch, the frequency domain seems to have the noise and associated harmonics characteristic of discontinuous functions with their large impulse. That would imply that the emission is a Gaussian distribution in the frequency domain; if so, or even if that is merely a useful approximation, what determines the mean and variance? Pannag Salmon (talk) 18:29, 14 October 2008 (UTC)[reply]