Other Parts Discussed in Thread: TPS61241
Hi everyone,
I am currently working on a Li-Ion battery charger system for my senior design project. I dont have much of a power electronics background so I would like some advice/help on a couple things.
Some background: A single Li-Ion battery will need to power a raspberry pi 4 which requires 5V that will run multiple Bluetooth modules. The project needs to be portable, so that is why we also need a battery charger system. I have attached a picture of a high level view of what the charger system should contain.
I did some research and I am considering to use the BQ24232 as the battery charger and BQ27441 as the fuel gauge. Since the raspberry pi needs 5 V to operate, I believe I will need a boost converter and I was considering the TPS61241. However, a concern I have with the boost converter is, since I will be boosting the voltage and I have a fixed load, that means my current will also increase. If the current increases the battery will not last as long. In order to avoid this problem, I am currently doing research on the mAh rating I should obtain for my battery, but I was also wondering if there are boost converters that take this into consideration?
I would like to know if my considered options would be good options for this project, or if there are any other recommendations.
In addition, I am planning to simulate my battery charger circuit, are there any recommendations of what software to use for that? The only circuit design software I have used in school is Multisim.
Any help would be greatly appreciated!