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Batter Emulation for power system testing

andrew gans
Prodigy 10 points
Other Parts Discussed in Thread: BQ24192

I am developing a product built around the bq24192 power path management chip. I am getting far enough along with testing and prototyping where I want to do more controlled testing, explore edge cases and perform some cycle testing. All of this requires some form of battery emulation. I Was wondering what the TI community would recommend for battery emulation. So far I have done a little exploration into, purchasing a true battery emulator, building my own circuit that when hooked up to a power supply can do basic battery emulation and also using a testing facility for my testing requirements. The last option I am not super keen on as it requires that I have all my tests formulated from the get go and a lot of these tests I will probably be exploring as I find issues.

  • 0
    TI__Expert 8230 points

    Hello Andrew,

    For battery emulation, we use either bipolar power supplies or sourcemeters (for example a Keithley 2400 sourcemeter) which allows to emulate a battery since it needs to be able to sink and source current. Adding a big capacitor on the sourcemeter also helps to simulate a battery during testing. Battery emulators are also a good equipment to have handy and it seems you have one you can use for your testing.

    I also recommend reviewing this app note that provides information on how to build a battery simulator.

    If in the future you want to perform charge cycles on a real battery, you can use a GDK board that has an on-board charger (a bq24192 in fact) and a gas gauge that lets u connect a battery and charge it as well as discharge it.

    Hope this helps.