Dear Community,
i bought an BQ24619EVM and tried to get it started. I want to charge only one battery cell to 4,2V.
I connected 24V to the AC input, 1,8V to the TS terminal and the battery (actual 3,5V) to the bat terminal. i just changed the resistence for the feedback pin to adjust the output voltage to 4,2V. nothing connected to Vsys.
Setting (Enabling) the CHGEN jumper: PG, ACDRIVE, Stat1, CE are lightning
Vsys 24V
Vbat 3,5V
Vcc 24V
Stat1 0,03V
Stat2 3,4V
ISET1 0,6V
ISET2 0,3V
ACDRV 19V
CHGEN 3,3V
ACSET 0,8V
BATDRV 23,4V
TS 1,8V
REGN 6V
SRN 3,5V
SRP 3,5V
ACN 24V
ACP 24V
Ibat -0,005A
When i control the gate signal of the mosfets, i can see a solid high level on each gate. Im confused about the gate level: I expecteda PWm signal, not solidlevels. Furthermore the gate level is the battery voltage. Batter connected -> 3,5V battery disconnected -> 0V
Please help me.
Kind regards,
Marc
