Boost Converter Tutorial?

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In the past I have designed boost converters in burst mode, with peak
current control, but never with a PWM-controlled loop.

Outputs: +5 @ 25mA, -5V @ 20mA

Can someone point me to a tutorial?

Thanks!

[Don't point me to an off-the-shelf part.  This has to go into a
_custom_ chip... just a little thing... 1mm x 25mm :-]
        
                                        ...Jim Thompson
--
| James E.Thompson, CTO                            |    mens     |
| Analog Innovations, Inc.                         |     et      |
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Re: Boost Converter Tutorial?
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Hmm, an inch long and a millimeter wide--it's for a robotic cockroach,
right?

Cheers

Phil Hobbs

Re: Boost Converter Tutorial?
On Sat, 11 Feb 2012 13:25:00 -0500, Phil Hobbs

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Nope.  It goes in something that virtually every person owns :-)
        
                                        ...Jim Thompson
--
| James E.Thompson, CTO                            |    mens     |
| Analog Innovations, Inc.                         |     et      |
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Re: Boost Converter Tutorial?
On Feb 11, 1:26A0%pm, Jim Thompson <To-Email-Use-The-Envelope-I...@On-My-
Web-Site.com> wrote:
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Twenty questions!

Is it for a tracking chip that goes into people's necks?

Re: Boost Converter Tutorial?
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So you decided to take someone's advice about what to do with your
design?

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
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Re: Boost Converter Tutorial?
On Sat, 11 Feb 2012 13:34:08 -0500, Phil Hobbs

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This is but a small portion of the whole chip.  As I said, I have no
experience (*) with PWM'd boost converters, though lots of those with
low output current, running burst mode (they have little or no
stability issues).

As Larkin would snark, If you've got something technical to say, then
say it, otherwise STFU :-{)

(*) Unlike some posters lurking here, I readily admit areas of which I
have little or no expertise.  Then I listen, learn and ultimately
become the expert ;-)
        
                                        ...Jim Thompson
--
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| Analog Innovations, Inc.                         |     et      |
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Re: Boost Converter Tutorial?

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Yeahbut you tried to cram a burst mode at one of my questions and I hadn't
even asked for a design.

It wasn't because burst mode was best for my app, it was because you didn't
know PWM - not exactly honest was it.



Re: Boost Converter Tutorial?
On Sat, 11 Feb 2012 20:21:29 -0000, "Ian Field"

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---
Your "questions" are little more than trolls designed to attract and
focus attention on you and, since you asked for "help" and it was
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Re: Boost Converter Tutorial?

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Do try to pay attention sometimes!

All I asked for was load curves for bicycle dynamos.

I didn't ask anyone to design it for me - I already have that well in hand.

I didn't reject the few (unsolicited) solutions from the minority of
smart-asses pretending to know more than they did - I just ignored them.



Re: Boost Converter Tutorial?
On Tue, 14 Feb 2012 13:14:29 -0000, "Ian Field"


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Well, since ignorance seems to be your strong suit, that was probably
a good move on your part.

--
JF

Re: Boost Converter Tutorial?

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Well I certainly saved myself some aggro by ignoring the unsuitable topology
suggested by your chum.

Can't help wondering whether he'd have got it right if he had known how to
do the correct way.



Re: Boost Converter Tutorial?
On Tue, 14 Feb 2012 14:17:54 -0000, "Ian Field"

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"Aggro"?

Oh, my, how cute!

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Re: Boost Converter Tutorial?
On Tue, 14 Feb 2012 18:24:27 -0600, John Fields

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Perhaps Ian, upon completion of his engineering degree, will grace us
with an elegant solution to the hub dynamo problem ?:-)

My only regret is that I wasted time trying to help Ian.  It'll not
happen again.
        
                                        ...Jim Thompson
--
| James E.Thompson, CTO                            |    mens     |
| Analog Innovations, Inc.                         |     et      |
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Re: Boost Converter Tutorial?

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Thought you were running the math, not your mouth!



Re: Boost Converter Tutorial?
On Wed, 15 Feb 2012 21:12:02 -0000, "Ian Field"

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I think neither is probable.
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Re: Boost Converter Tutorial?
On Wed, 15 Feb 2012 21:12:02 -0000, "Ian Field"

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Gosh, just how much help was he?


--

John Larkin, President       Highland Technology Inc
www.highlandtechnology.com   jlarkin at highlandtechnology dot com  

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Re: Boost Converter Tutorial?

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Dunno' - these days I just stand back and watch the amusing antics.



Re: Boost Converter Tutorial?
On Tue, 14 Feb 2012 08:12:53 -0600, John Fields

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Ian _and_ a notable other poster on this topic are severely ignorant
about the real world.

PWM BUCK is trivial.  I chose BURST for the hub dynamo because it
would be a freebie around the 555, and I was intent on rubbing the 555
up some snobbish noses ;-)

PWM BOOST is NOT trivial, though I'm well on my way to an off-the-wall
STABLE solution... found by running the math instead of my mouth.
        
                                        ...Jim Thompson
--
| James E.Thompson, CTO                            |    mens     |
| Analog Innovations, Inc.                         |     et      |
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Re: Boost Converter Tutorial?
On Sun, 19 Feb 2012 20:34:28 -0500, "Tom Del Rosso"

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In ways I will apply for patent, then explain ;-)
        
                                        ...Jim Thompson
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| Analog Innovations, Inc.                         |     et      |
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Re: Boost Converter Tutorial?

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So it's totally wacky then.

:)


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