Hi,
I am going to design my power supply using TPS61222 to supply a 5V power source to my system.
Vin is always using two alkaline battery in series to supply a 3v as input.
Step 1) Initially, I use the recommanded L 4.7uH.
It cant boost the voltage to 5V. It only boost to 2.4V. The load is 1k Ohm.
Step 2) After trying, I changed the L to 200 uH. Then it boost to 5V.
Step 3) I change the load to 200 ohm. the voltage drop to 3.7V. I changed the L again to 470uH.
Then it switched to 5.3V.
Is this normal ? I need to constantly adapt the L to suit my load?
