Analog Devices ADP5063, User Manual

Page: 9 / 13

Evaluation Board User Guide UG-595
Rev. 0 | Page 9 of 12
THR INPUT AND JEITA SETTINGS
The THR input of the ADP5063 evaluation board is equipped
with the 50 kΩ trimmer resistor (R3) and Jumper J10. When
using an actual Li-Ion NTC thermistor terminal, configure the
board according to Figure 5.
1.
Remove Jumper J10.
2. Connect the Li-Ion battery NTC thermistor to the screw
terminal, J2, at Pin 4.
Evaluating THR Input Using Typical Board Setup
To evaluate the THR input using the typical board setup,
complete the following steps:
1.
Set the V
VIN
supply voltage to 5.0 V.
2. Set V
ISO_B
to 3.3 V.
3. Set the charge current setting to 750 mA using the GUI.
4. Set V
VIN
input current limit to 1500 mA.
5. Enable charging (EN_CHG = high).
6. Measure current to ISO_Bx, value should be 750 mA.
7. Adjust the trimmer resistor until the THR-pin status
indicator on the GUI shows BatCool .
8. Enable JEITA by setting the EN_JEITA bit high in
functional settings register, Register 0x08.
9. Measure current to ISO_Bx. Charging current must now
be half of the fast charge current setting.
10. Change the trimmer resistor setting to evaluate the JEITA
thresholds. The THR input resistance thresholds are
specified in the
ADP5063 data sheet.
11. The THR-pin status indicator in the GUI must show
BatCold , BatCool , Thermistor OK , BatWarm , or BatHot
when adjusting the trimmer resistance from 50 kΩ to 0 Ω.