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High Loading Current Voltage Doubler

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luel04

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Good day :) I am currently working for a voltage doubler and is having trouble on how to improve the circuit to handle a load current of as much as 100mA. Is there any architecture I can add to my charge pump to handle such very high load current? input is 1.25-1.5V
 

Hi,

I don't know the way to do so, but the Microchip TC962, Linear LTC3216, and TI TPS6012x range all can output, respectively, 80mA, 1A, 200mA. Maybe having a good browse of these, and similar, datasheets for charge pump devices can show architectures you could realistically copy or adapt to add to your design.

It's an IC design, but you never know if it's adaptable: **broken link removed**
 

Are you talking about a capacitor-based voltage doubler? As a general rule you should increase capacitor values, so their charge stays pretty much the same, within, say 10 percent. That is how they convey greater current from one stage to the next. In addition your switching system also needs to have sufficiently low impedance to carry the greater current.
 

Okay thanks :)
 

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