Hi.....
I am using BQ24617 for charging the 7.2v Li-Ion battery. The Charge enable pin of BQ24617 is controlled by MSP430F2254(it is used for battery charge controller). And higher end controller is used as a master controller
We have Bootstrap loader circuit for MSP430 to progrmme the MSP via master controller.
The DC-DC converter is connected to the charger o/p of BQ24617.
Problem:
When MSP430 getting programmed through Bootstraloader via Master controller, it require RESET pin of the MSP pulled low (10 ms) then High ( Proper RESET) . due to this reason CE Pin (driven by MSP) of the BQ24617 pulled low and then high ( As MSP pulled CE high in his firmware) . Due to such reason the Q1 and Q2 ( as refer to
Figure 1. Typical System Schematic in datasheet of BQ24617) of BQ24617 getting resets and I observe the approx 30ms voltage deep on power line( as refer to fig 1 , line goes to System) hence the whole circuits power supply interrupted and I dose not satisfy the actual results.
Is there any relation/Dependency between CE pin and the ACDRV/ pin?
Putting the Bulck capacitor on power line will be the solution for my circuit? i do not want to add bulk capacitor.
Please help me in this regards!
