Hello Everybody
I’m using the MP2759 to charge a 6S battery pack.
The problem is: When I use a 36V power supply the ACK led goes dark and the system wont charge the battery, when I use a power supply below 34V the ACK goes up normally and the battery begins charging.
Isn’t the MP2759 supposed to work with a 36V power supply?
I already design my system to use the 36V battery, to change now would be costly.
Here’s my circuit
Nope, in the datasheet there is an input overvoltage lockout, nominal value is 36V but the minimum is 35.
Kind of a deceptive title for the datasheet.
Hello Danilo,
jshannon speaks the truth with the upper end operating voltage and the OVP threshold in the MP2759 datasheet.
I’m not sure what stage you are at in terms of your design cycle, but if it’s not too late I can suggest the MP2659 Switching Charger. It is very similar to the MP2759 but does not have the upper limit Input OVLO voltage at 36V at the upper end of this IC. The package type and dimensions are all the same, but some pins are different.
Hopefully this ends up working well with your application (unless you are trying to meet IEC 62368-1 CB Certification as stipulated by the MP2759 and not the MP2659)? Just wanted to double check before recommending this.
