Hello, Following the previous topic, I will upload it additionally.
I want to 4S2P Li-ion Battery Charging with MP2759 Chip.
The circuit was constructed with reference to the EVM board and the VIN=20V, ICC=1.5A design connected the battery.
However, when charging the battery, a pulse wave should be generated in the SW pin, but it is completely unresponsive.
The SW pin is not responding and the applied voltage of the battery is applied.
All STAT or ACOK pins are in the LOW state and are set to the battery charging state.
Can you suggest a solution to the issue where the SW pin is unresponsive?
Additionally, I will upload the reference photo together.
Number 1 is the pulse waveform of the Vsw referenced in the datasheet, number 2 is the Vsw when the battery is not connected, and number 3 is the Vsw after the battery is connected.
If you look at 2 and 3, the Vsw pulse wave occurs normally before the battery is connected, but not after the battery is connected.
I would appreciate it if you could check this part.
