I’ve got a customer testing the MP2658 in a new design and there was a question that was ambiguous when reading through the datasheet, and I was hoping someone could help.
In regulation mode, the IC creates an output voltage equal to whatever VBATT_REG is and battery charge termination is blocked. What does it mean battery charge termination is blocked?
What happens if you AREN’T in regulation mode? What voltage does the output of the device create?
Welcome to the MPS forums! Appreciate your patience on this.
What does it mean battery charge termination is blocked?
This IC can produce the required battery voltage depending on the feedback resistors you chose. Vbatt_reg comes in one of the phases (CV) of the charging cycle of the IC and the regulation mode is related to the charge termination TERM pin connection and NTCDET bit.
In this case, Vbatt_reg will be 94% of battery regulation voltage. You can use our EV2658-Q-00A to verify this.
What happens if you AREN’T in regulation mode? What voltage does the output of the device create?
By default this IC works in non regulation mode since NTCDET bit is 0 in this case, and the voltage will be equal to what feedback resistors you select with an accuracy of 99%. For example, if you intend to have 12V of Vbatt_reg, it should be around the ~11.97V to ~11.99V.
May I know who this end customer is and what’s their end application?
