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https://designers-guide.org/forum/YaBB.pl General >> Tech Talk >> High speed DC-DC converter https://designers-guide.org/forum/YaBB.pl?num=1285083639 Message started by rajdeep on Sep 21st, 2010, 8:40am |
Title: High speed DC-DC converter Post by rajdeep on Sep 21st, 2010, 8:40am Hi all, How much faster the DC-DC converters need to be in todays battery powered devices? (5-6MHz switchers are commercially used in cell phones, that I know of) I can think of the following: 1. There is ongoing work on integrating the inductor on the same die to reduce board-space, and to go for smaller L value. Smaller L => higher frequency of DC-DC converter. 2. Some of the processors (got it from a paper) need step down from 12V-->1V and that can happen very quickly. They need fast and responsive dc-dc convs. 3. But arbitrarily frequency cannot be increased as there is limitation to Si. Alternatively, GaN can be used? Still in the research arena I guess.. My other question is: If we go for using GaN switches in place of Si, given the high-speed achievable with GaN can we go for more aggressive/new architecture/design of the control-loop, which will be still in Si? Thanks, Rajdeep |
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