Other Parts Discussed in Thread: BQ25306, BQ24170
Hello,
We would like to verify if we can test our BQ24104 EVM as well our own Charging Circuit PCB (also using BQ24104 IC) with an electronic load connected to VBAT instead of the actual battery. Page 8 of the Eval Board (https://www.ti.com/lit/ug/sluu200a/sluu200a.pdf) states that "An alternative method of testing the EVM is with a source meter, that can sink or source current. This can easily be adjusted to test each mode, in place of a battery". Can any electronic load with CV and CC mode be used? We currently have a RIGOL DL3021A in our Lab (200W, 150V 40A, has CC CV CR CP mode). Can we use this load in place of the battery?
The BQ24104 Eval Board only has test procedure instructions for a battery. Can we follow the instructions of the other Eval Board test the charger circuit like the following below:
BQ25306 Eval Board: https://www.ti.com/lit/ug/sluuc50a/sluuc50a.pdf
BQ24170 Eval Board: https://www.ti.com/lit/ug/sluu463/sluu463.pdf
Can we follow the test procedure of BQ24170 Section 2.7.4 to test the charge termination and recharge mode of the charger IC?
In the same Section (2.7.4), for a 2 Cell Battery charging application, how quickly does the current drop when the electronic load voltage increases to 8.4V?
Do we need to place a Large Capacitor in between Battery and GND connections? Is there a recommended value and rated voltage?
We have also seen some forums that I would need a power supply in parallel to the electronic load? Is a parallel power supply needed to evaluate this charger IC? (see links below)
Thanks,
Deniel
