Analog Devices ADP5061, Быстрый старт

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Evaluation Board User Guide UG-467
Rev. 0 | Page 9 of 12
THR INPUT AND JEITA SETTINGS
The THR input of the ADP5061 evaluation board is equipped
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.
J1
1
2
J4
JP3
C4
C5
C3
U2
C1
D1
J11
J3
J2
1
9 8
7 2 19
18
17
16 TP15
14
13
12
11
10
1
TP4
TP3
TP20
C12
U1
J9
J10
R18
R17
R16
R9 R12
7.2mm
CBP
8.4mm
BAT_SNS
ISO_B_S
ISO_S_S D3 D1 2
IL
ED
IS
O
_S
_F
VD
D
IO
BAT_SNS THR
SYS_EN
GND
AD
P5
06
1
W
LC
SP
D
EM
O
E
C
I
V
E
D
O
L
A
N
A
S G
VIN_F
GND
IN_F
ISO_S_F
ISO_B_F GND GND
SCL
GND
GND
ISO_S_F
ISO_S_F
ISO_S_S
ISO_B_S
ISO_B_S
VIN_S
GND_S THR
AGND
BAT_SNS
ISO_B_F
SDA
IN_S
IN_F
REMOVE R 9
CONNECT THERMISTOR
10993-
017
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
IN
supply voltage to 5.0 V.
2. Set V
ISO_B
to 3.9 V.
3. Set the charge current setting to 750 mA using the GUI.
4. Set V
IN
input current limit to 1500 mA.
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 .
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
IN
supply voltage to 5.0 V.
2. Set V
ISO_B
to 3.9 V.
3. Set the charge current setting to 750 mA using the GUI.
4. Set the V
IN
input current limit to 1500 mA.
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
ADP5061 data sheet.
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.