Recently i'v met a problem when I was designing the charging circuit using BQ24278. The problem is that the IC seems not working,I checked the input is OK.and I read many Subjects in this community. I wonder if it is the Problem of CD and /CE.?
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Recently i'v met a problem when I was designing the charging circuit using BQ24278. The problem is that the IC seems not working,I checked the input is OK.and I read many Subjects in this community. I wonder if it is the Problem of CD and /CE.?
If
1. the voltage between IN and GND pins is higher than the VINDPM threshold voltage
2. the voltage at TS is approx 1/2 VDRV
3. the voltage between BAT and GND pins is below 4.2V
4. the /CD and /CE pins are low
5. the load on SYS is not more than the input current can handle
Then the charger should be charging.