4 Evaluation Steps

1. Input the battery information and the BQ2562x configuration before doing the setup in the main.c file as shown in Figure 4-1.
   Figure 4-1 Software Configuration

   Table 4-1 shows the basic description for the configurations. Battery information, like max voltage and max current, can be obtained from the battery manufacturer. The precharge current and terminate current are obtained from experience and are according to the application requirement. For the BQ2562x configuration, TI recommends to add some margin based on the battery information.

   Table 4-1 Configuration Description

   Category	Parameters	Description
   Battery information	Constant_charge_current_max_ua	Max constant charge current for battery.
   	Constant_charge_voltage_max_uv	Max constant charge voltage for battery; this works at the end of charge.
   	Precharge_current_uA	Precharge current for battery. Used to make sure the battery is healthy and in good connection.
   BQ2562x configuration	iInputHighLim_uA	Max input current in power line side. If this is above the max input current, then the discharge is stopped.
   	vInputLowLim_uV	Minimum input voltage in power line. If this is not satisfied, then the discharge current constantly decreases.
   	Watchdog_timer_s	BQ2562x internal watchdog timer. Reset in the bq2562x_get_state() function.

2. Install CCS and load the code example from the link in Section 1.
3. Perform the hardware setup by following the instructions in Section 2.
4. Users can run a time check on the BQ2562x status by checking the variable bq_device->state in the debug mode of CCS, as shown in Figure 4-2.
   Figure 4-2 Result in Debug Mode

The result parameter description is shown in Table 4-2. For the parameter definitions, refer to the BQ25620/BQ25622 I2C Controlled 1-Cell, 3.5A, Maximum 18V Input, Buck Battery Charger with NVDC Power Path Management and OTG Output data sheet.