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From: Winfield Hill <hill@rowland.harvard.edu>
Newsgroups: sci.electronics.design
Subject: Re: Achieving 98% efficiency in a boost converter, RIS-767
Date: 13 Apr 2017 08:22:42 -0700
Organization: Rowland Institute
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legg wrote...
>
> The 17224/5 switches are 31 and 75mR typ.

 Yes, but with higher Coss losses.  But I like the highly
 effective variable switching frequency scheme.  But they
 are offering a family, which makes them more attractive.

> The kit here is gathering dust......

 Yep.  OK, I thought to replace U13, the TPS61070, with
 the MAX1722x family, but the uDFN package is so small,
 I was able to shove some things around and add it as
 an additional selection.  I managed to find room for
 one more 0805 1% resistor, to set the output voltage.

 It's time for me to go ahead and order the PCB now.


-- 
 Thanks,
    - Win