Battery power supply module knowledge point

BatteryPower Supply Module knowledge point

1. Notice on lithium battery charging curve;

2. Combined with code understanding, the state machine transformation process in the charging process;

3. What is the voltage of the low-voltage prompt;

4. What are the boot voltage and boot current respectively, and the V of the low-power shutdown voltage;

5. The full grid voltage is divided into several grids, and the corresponding voltage range of each grid is as follows;

 

6. What is the average standby current and how long is the normal standby current;

7. The amount of current consumed by each module, such as playing MP3, taking photos, and making calls;

8. What is the working process of power-on with a charger;

9. PMU (Power Management Unit) Power Management Unit, circuit diagram identification and understanding, and the relationship with each hardware circuit, such as with the CPU, peripherals and so on.