Hi,
We designed a charger circuit for 4S battery pack. We want to verify the hardware circuit. For BQ25708, we tried to use Battery Management Studio tool. We can not see BQ25708 option in the target. How can we verify hardware circuit?
Thank you.
Hi Tiger,
Thank you for response. We have some problems.
1. We measured above 14V the gate level of Q17 (BATFET) mosfet. For this status, BATFET is operating in linear mode. Although we set "Disable LDO Mode", we can not see below 10V on the gate of Q17 Mosfet. For this status, we observed high temperature rise on the BATFET mosfet at above 1A charge current. BATFET signal picture was attached (Q17 Gate Signal). . How can we fully turn on BATFET?
2. Our system input is 16V DC and we charge 4S Li-Ion battery ( Max voltage 16.8V). We noticed a deteoration on gate signal of HDRV2 and LDRV2 mosfet. Because of this deteoration, we see temperature rise on these above 1A charger current. How can we do minimize signal deteoration?
We set charge current as 1536mA. For this status, we observed gate signal of mosfets. Before the test, we removed BATFET from the circuit because of temperature rise. Gate signal pictures were attached.
Finally, when we increased battery charge current, we observed to increase difference between input current and charge current. This status cause temperature rise on the mosfets.
Thank you.
