>-----Original Message-----
>From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] 
>Sent: 27 June 2006 12:23
>To: Microcontroller discussion list - Public.
>Subject: Re: [EE] Peltier Device Info wanted.
>
>
>Alan B. Pearce wrote:
>> Has anyone here driven peltier devices from a switching 
>regulator? How 
>> much ripple would you expect to allow? Essentially I am looking to 
>> minimise the size of output capacitor on the regulator, so if >200mV 
>> ripple on 1.5V supply is permitted, that would be great.
>
>A Peltier device doesn't inherently care about ripple, but it 
>does get less efficient as the AC component increases.

It's generaly accepted that a ripple of less then 10% has negigible impact on the performance of a TEC.  Note that Maxim and Analog devices have high frequency switching TEC controllers that can give low ripple with very small inductor and capacitor values.

Regards

Mike

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