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Approver | [Not Completed] | ||||||
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Previous Design
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Standard boost converter layout, swapping diode for GANFET on node from inductor to battery, which is a pretty standard edit.
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Option 1: Boost | Option 2: Zeta | Option 3: Resonance | |||||||||||||||||||||||||||
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Overview | Design already implemented, and tested so kinks are worked out. Only capable of boosting, and has a generally lower efficiency than other two options. | Capable of boosting or bucking, very standard circuit layout that wouldn’t take too much messing around to make work. Generally higher efficiency and smaller passive components than boost converter. | Can implement ZVS or “soft switching” which is intended to reduce or eliminate switching losses. Probably most efficient design, but only has this efficiency at relatively small input voltage ranges in basic designs. There are slightly more complex versions that can handle large ranges of voltage inputs and maintain efficiency. Dr. Hanson has a really good paper over this which pretty much tells you how to design one of these. | ||||||||||||||||||||||||||
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Pros and Cons |
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I am going to design the circuit using the resonance converter for now. The only concern that I have is that resonance converters are known to lose efficiency outside of specific input ranges. However the circuit topology I am choosing to use should be capable of maintaining high efficiency at larger input ranges.
Engineering Diary
Check out Dr. Hanson's paper on a ZVS resonance converter design he made:
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