Other Parts Discussed in Thread: BQ24650
BQ25798 Evaluation module (BQ25798EVM)
The charger work in autonomous charging mode (without host connected)
No battery (or total empty battery connected)
12V input source from lab power supply (3.5A maximum current)
1.5MHz 1S jumper connected (Vsys = 3.5V )
5.8OHM resitor connected as system load, 600mA SYS current (calculated and measured)
There output (SYS) voltage drops down each 1.5s:
each 1.5s the voltage fall to 0V during ~12ms
Is this a normal behavior?
I am trying to stabilize the output voltage with a capacitor connected to SYS
The small capacitor is not enough
Larger one (4700μF) prevents charger from starting (because of "System Short Protection"):
How to keep a stable output voltage?