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The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl Design >> High-Power Design >> 1V-->3V boost https://designers-guide.org/forum/YaBB.pl?num=1152764160 Message started by jcpu2006 on Jul 12th, 2006, 9:16pm |
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Title: 1V-->3V boost Post by jcpu2006 on Jul 12th, 2006, 9:16pm Dear Sir: I've a 2.4V-->3.3V boost dcdc and next target would be 1v-->3V dcdc what should I do? Build a 0.7V BGR with VDD down to 1V?? that doesn't seems to help so much... :( |
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Title: Re: 1V-->3V boost Post by loose-electron on Aug 3rd, 2006, 4:19pm They are called "charge pumping circuits" where you use switches to dump charge onto a capacitor to get above the power supply voltage. In some cases, you can use charge pumps, to drive another charge pump. Example: 1V power, can get you to a around a 1.8V on a capacitor. Then you use that to power another pump that get you up to around 3V or so. Take a look in the IEEE JSSC - there should be some stuff there on the topic. Here is a good introduction: http://www.eecg.utoronto.ca/~kphang/ece1371/chargepumps.pdf that should get you started in the right direction. Jerry |
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Title: Re: 1V-->3V boost Post by RobG on Oct 16th, 2006, 10:52am My paper in the August 2006 IEEE Journal of Solid State Circuits has a topology that creates its own reference and will work down to 1V. I tried to make it understandable to people without a lot of charge pump experience, so it may be helpful to you. http://ieeexplore.ieee.org/iel5/10489/33245/01568778.pdf?isnumber=&arnumber=1568778 rg edit... sorry, the above link was for the CICC version. The JSSC article is here. |
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Title: Re: 1V-->3V boost Post by darrenxyz on Nov 28th, 2006, 7:55pm after dcdc startup, you can connected BGR to dcdc output,so you can provide 3.3v power to the BGR, not by battery power!! jcpu2006 wrote on Jul 12th, 2006, 9:16pm:
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