How to design control logic for selecting a rectifier topology

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shaikss

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Hi Folks,

I have designed 2 rectifier topologies - one works well for low voltages (0.5 to 0.7V) and the other works well for higher voltages (0.8-1V).
If I can use some control mechanism and sense the voltage (either at input or output), I can select either of the two topologies.
Since its a passive device, I don't have a battery to store voltage/current.

Please let me know how to proceed further.
 


I have attached the two topologies of rectifier. As I mentioned earlier,the second one works well for lower input amplitudes and the first one for higher input amplitudes.
In order to achieve max efficiency for low as well as higher input amplitudes, I need some adaptive control mechanism which can select rectifier topology based on input voltage.
So, How can I select and design a control circuit which can select either of the topology based on the input voltage?
 

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