Thr Input And Jeita Settings - Analog Devices ADP5061 Quick Start Manual

Evaluation Board User Guide

THR INPUT AND JEITA SETTINGS

The THR input of the ADP5061
with two 10 kΩ resistors (R9 and R12) and jumper J10. When
using an actual Li-Ion NTC thermistor terminal, configure the
board according to Figure 7.
1. Remove the R9 resistor.
2. Connect the Li-Ion battery NTC thermistor to the screw
terminal, J2, at Pin 4.
REMOVE R 9
12 10 14 2 7
2 D1 D3 VIN_S THR GND_S
13 11 TP15 1 8
IN _F
TP3
C12
IN _F
CBP TP4
R9
J9
IN _S
U2
C5
C3
8.4mm
D1
TP20
BAT_SNS
C4
R17
7.2mm
J11
GND
VIN_F ISO_S_F
J4 J1
U1
C1
Figure 7. THR Input Evaluation Setup.
Evaluating THR Input Using Typical Board Setup
To evaluate the THR input using the typical board setup, do the
following:
1. Set the V supply voltage to 5.0 V.
IN
2. Set V to 3.9 V.
ISO_B
3. Set the charge current setting to 750 mA using the GUI.
4. Set V input current limit to 1500 mA.
IN
5. Enable charging (EN_CHG = high).
6. Measure current to ISO_Bx, value should be 750 mA.
7. Remove jumper J10 from the board.
8. The THR-pin status indicator on the GUI must show
BatCool.
9. Enable JEITA by setting EN_JEITA bit high in functional
settings register, Register 0x08.
10. Measure current to ISO_Bx. Charging current must now
be half of the fast charge current setting.
11. Reinstall Jumper J10 to the board.
12. The charge current must return to the full charge current
setting value.
13. The THR-pin status indicator must show Thermistor OK.
evaluation board is equipped
17 19 GND
ISO_S_S
9 16 18
ISO_B_S
JP3
J10
AGND
GND
R12
GND
BAT_SNS
R18
ISO_B_F SYS_EN
SDA
ISO_B_S
R16
SCL
ISO_B_S
ISO_S_S
ISO_S_F
ISO_S_F
J3
GND THR BAT_SNS ISO_B_F GND
J2
CONNECT THERMISTOR
Evaluating THR Input Using a Trimmer Resistor
It is possible to evaluate the resistance thresholds according to
the JEITA Li-Ion battery temperature levels with a 50 kΩ trimmer
resistor. Use the setup shown in Figure 7; however, connect the
trimmer resistor to the THR input of the J2 screw terminal
instead of the battery thermistor.
1. Set the V
2. Set V
ISO_B
3. Set the charge current setting to 750 mA using the GUI.
4. Set the V
5. Enable charging (EN_CHG = high).
6. Enable JEITA by setting EN_JEITA bit high in functional
settings register, Register 0x08.
7. Change the trimmer resistor setting to evaluate the JEITA
thresholds. The THR input resistance thresholds are
specified in the
8. 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.
1
Rev. 0 | Page 9 of 12
supply voltage to 5.0 V.
IN
to 3.9 V.
input current limit to 1500 mA.
IN
ADP5061 data sheet.
UG-467