@berkseo I presume so, but so far I've only confirmed that it works. If running a wireless device, then to be ultra conservative, one would want to have it charge a capacitor, then turn it off before an rx or tx, and then turn it on again. That would be true for any boost converter. Unfortunately, this one doesn't have an enable pin, so you'd have to make your own switch for it in that case. I don't know that it would be needed, but that would be the abundance of caution approach. Either that or make a low pass filter for it if it has any remaining voltage ripple. I haven't measured for that, so I can't say. It may or may not be an issue. Without doing measurements, I couldn't say. Again, that would be true for any boost converter.
Super Efficient Boost Converter
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Donate to support Open HardwareThis board uses a relatively new boost converter chip from Texas Instruments: http://www.ti.com/lit/ds/symlink/tps61322.pdf
It has several noteworthy advantages:
- Quiescent current of 6.5uA.
- Relatively low cost compared to comparable chips.
- Very high boost efficiency, even at low currents (see chart in photos section). In fact, in this metric it by far outperforms all the other chips that I'm aware of.
- Low part count, which means faster and easier assembly.
- Nominal minimum input voltage of 0.9v. On the one I tested, the minimum was actually lower at 0.79v from a cold start.
In this project I'm using the TI boost chip with a 3.3v fixed output, but a simple substitution of another chip in the same series will produce 5v, or other fixed voltages depending on the chip used.
