Analog Devices ADP5062 User manual

Evaluation Board User Guide
UG-500
One Technology Way •P. O. Box 9106 •Norwood, MA 02062-9106, U.S.A. •Tel: [phone] •Fax: [phone] •www.analog.com
Evaluating the ADP5062 Linear Li-Ion Battery Charger with Power
Path and USB Compatibility in LFCSP
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 | Page 1 of 15
ADP5062 FEATURES
Input voltage 4.0 V to 6.7 V
High current terminals for ADP5062 power connection
(VINx), system voltage (ISO_Sx), and battery voltage
(ISO_Bx) pins
ADP5062 operation configurable via I2C interface
Evaluation software included
PACKAGE CONTENTS
ADP5062CP-EVALZ evaluation board
Evaluation CD: ADP5062 evaluation software installer
HARDWARE REQUIREMENTS
USB-to-serial-I/O interface USB-SDP-CABLEZ (The USB-SDP-
CABLEZ is not supplied in the evaluation kit and should be
ordered separately from Analog Devices, Inc.)
SOFTWARE REQUIREMENTS
Analog Devices ADP5062 SDP evaluation software
GENERAL DESCRIPTION
The ADP5062 charger evaluation system is composed of an
evaluation board, an USB A to USB micro B cable and an USB
A adapter board. All evaluation board functions and circuits are
controlled via one I2C bus connector. The I2C bus interfaces
with the ADP5062 directly, and the digital input/output signals
are controlled through an on-board input/output expander
circuit on the I2C bus. The evaluation board also features a 3.4
V regulator for VDDIO generation. The board contains jumpers
and numerous test points for easy evaluation.
The ADP5062CP-EVALZ evaluation kit contains a CD with the
ADP5062 GUI 3v0 installer. Use the GUI in conjunction with
the USB-SDP-CABLEZ, USB to Serial I/O Interface.
Full performance details are provided in the ADP5062 data
sheet, and the ADP5062 data sheet should be consulted in
conjunction with this user guide.
ADP5062 EVALUATION BOARD
ILED
ISO_S_F
VDDIO
ADP5062 QFN20 DEMO
EC
IV
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OLANA
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D3SD3
Figure 1.

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TABLE OF CONTENTS
ADP5062 Features............................................................................ 1
Package Contents.............................................................................. 1
Hardware Requirements.................................................................. 1
Software Requirements................................................................ 1
General Description ......................................................................... 1
ADP5062 Evaluation Board ............................................................ 1
Revision History ............................................................................... 2
Evaluation Board Software.............................................................. 3
Installing ADP5062 Evaluation Software.................................. 3
Using the Software Graphical User Interface (GUI).................... 4
Operating the Board with the GUI ............................................ 4
Basic Charging Parameter Settings............................................ 4
Setting Interrupts.......................................................................... 5
Setting Timers................................................................................5
Direct Register Read and Write...................................................6
Evaluation Board Overview .............................................................7
Typical Operation..........................................................................7
Input Current.................................................................................7
Trickle Charge Current.................................................................8
Fast Charge Current......................................................................9
Termination Voltage and End of Charge (EOC) Current........9
THR Input and JEITA Settings................................................. 10
Schematic Diagram ........................................................................ 11
Ordering Information.................................................................... 12
Bill of Materials........................................................................... 12
REVISION HISTORY
10/12—Revision 0: Preliminary Version

Evaluation Board User Guide UG-500
Rev. 0 | Page 3 of 15
EVALUATION BOARD SOFTWARE
INSTALLING ADP5062 EVALUATION SOFTWARE
Before installing the ADP5062 evaluation software, the drivers for
the USB-SDP-CABLEZ must be installed. The software and the
instructions can be obtained from www.analog.com/usb-sdp-
cablez.
After proper installation of the USB-SDP-CABLEZ drivers, insert
the ADP5062-EVALZ setup CD and run the Setup.exe file by
following the steps provided in the software installation instruction
document.

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USING THE SOFTWARE GRAPHICAL USER INTERFACE (GUI)
10993-012
3
2
1
7
4 5
6
8
9
Figure 2. ADP5062 GUI Operation Control and Status Tab
The following are the GUI operation controls and status tools
(see Figure 2):
1. Operation parameter controls
2. Functional enables
3. Interrupt register indicator (Register 0x0A)
4. Charger status
5. Battery status
6. Fault indicators
7. Watchdog control
8. Digital I/O controls
9. I2C Communication Status Indicators
OPERATING THE BOARD WITH THE GUI
Complete the following steps to use the board:
1. Before running the software, ensure that the Analog Devices
USB-SDP-CABLEZ to the USB port of the PC.
2. Connect a 5 V power supply to VIN_F.
3. Click START > All Programs > ADP506x GUI 3Vx SDP>
ADP506x GUI SDP. Once this step is done, the software is
ready to use.
VIN must be above 2.5 V in order for the I2C communication of
the ADP5062 to start working. The VIN voltage level is monitored,
and the indicators are shown in the charger status indicators
(see Number 4 in Figure 2). The GUI automatically reads the
content of the registers after every 0.3 seconds from the last
action and updates the status of the registers on screen.
If there is a problem in the I2C communication, the status
indicators will show an error message (see Number 9 in Figure 2).
When I2C communication is operational, status indicators show
I2C_STATUS_OK (see Figure 2).
BASIC CHARGING PARAMETER SETTINGS
After the input power supply is connected and is between 4.0 V
and 6.7 V, the ADP5062 is operational and capable of charging
the battery. Charging starts with default operational parameter
settings. It is possible to change settings using the controls on
the left side of the Opr Control & Status tab.

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SETTING INTERRUPTS
The ADP5062 includes several interrupt flags to inform the
system microcontroller of a status change in the corresponding
charger function. All interrupts are disabled by default, and
each interrupt can be separately enabled by issuing an I2C write
to Register 0x09.
The Interrupts & Timers tab (see Figure 3) in the GUI controls
the register settings. Register 0x0A is automatically read after
every 0.3 second timeout from the last user action involving the
GUI. When a certain interrupt is enabled, and there is a status
change in the corresponding function during charging, an
interrupt message is shown in the Opr Control & Status tab
(see Number 3 in Figure 2).
SETTING TIMERS
The default settings of the timers are shown in Figure 3. Changing
the timer settings can be done by clicking items in the Timer
Settings (Write to Register 0x06) box.
Register 0x09 controls the interrupt enables, and Register 0x06
controls the timer settings.
10993-013
1
2
Figure 3. ADP5062 Evaluation Software GUI, Interrupts & Timers Tab

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10993-014
Figure 4. ADP5062 Evaluation Software GUI, Register R/W Tab
DIRECT REGISTER READ AND WRITE
It is possible to read and write the content of each register using
the Register R/W tab as indicated in the GUI. Click READ
ALL to update the contents of each register in the GUI. A single
register read or write can be done using the controls on the
right side of the Register R/W tab of the GUI. Type the I2C sub
address in the Sub Address for READ and WRITE (0x00) box,
and then press ENTER. Click READ to read the binary data, or
click WRITE to write the binary data. Type the binary data for
an I2C write, and then press ENTER. Note that some registers,
such as Register 0x00 and Register 0x01, are read only registers
and cannot be overwritten.

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EVALUATION BOARD OVERVIEW
R3
C5
C4
JP1
J3
J11
U2
JP2 JP3
C3
D1
J1 1
J2
1
98
72 19
18
17
16
15
14
13
12
11
10
1
TP4
TP3
TP6
TP5
TP20
C1
C2
C12
C6
U1
U3
J8 J10
J7 J6
J5
R18
R17
R16
R6
R13
R5
R2
R8
R15
R14 R1
R7
R11
R10
THR 5
20
16
14
20
10
CBP
SYS_EN
BAT_SNS
VCO_LDO
ISO_B_S
ISO_S_S
D3D1D2
ILED
ISO_S_F
VDDIO
D3 D2 D1
GND BAT_SNSTHR
SYS_EN
GND
ADP5062 QFN20 DEMO
EC
IV
E
D
OLANA
S
G
VIN_F
GND
ILED
GND
GND
GND
D3SD3
D1S VIN_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
ILED_S
AGND
BAT_SNS
ISO_B_F
SDA
D2S
D2
D1
VIN_S
SDA
VIN_F
SCL
SMU or
Battery
GND
Battery
Thermistor
RS
System Load
GND
VIN 5.0 V
GND
Figure 5. ADP5062 LFCSP Demo Board Typical Operation Setup.
TYPICAL OPERATION
The typical test setup for the ADP5062 charger consists of a dc
power supply unit (PSU) for VIN_F, a source meter unit (SMU)
or a battery simulator for the ISO_B_x pins, and a variable
power resistor or electronic load for the ISO_S_x pins.
The SMU at the ISO_B node must have a 100 mΩ to 250 mΩ
resistor (RS) in series with its positive lead. The resistor emulates
the equivalent series resistance of a real battery. Some SMU
models that have been successfully used for the ISO_Bx node
include the following:
Keithley 2306 battery simulator
Keithley 2602A SMU
Agilent 6784A/6762A SMU
INPUT CURRENT
Measuring Total Input Current (IVIN)
When measuring VINx input quiescent currents, take into
account that the evaluation board includes an LDO (U1) and
I2C input/output (I/O) expander (U2A, U3A in Figure 7). The
LDO generates a 3.4 V VDDIO voltage for the I2C bus and
SYS_EN open-drain output, and the I/O expander controls
digital inputs DIG_IO1, DIG_IO2, and DIG_IO3.
In the ADP5062 evaluation board typical setup, the U1 and the
U3 are powered through a pin header, J3. Typically, the combined
current consumption of the U1 and the U3 are in the range of
1 mA to 2 mA. To separate the evaluation board quiescent
current from the ADP5062 VINx quiescent current, leave J3
open and connect a second dc power supply (3.5 V to 5.0 V) to
the test-point TP5 (see Figure 6).

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Figure 6. Board Setup for VINx Quiescent Current Measurement
VINx Current Limit
The VINx current limit of the ADP5062 can be evaluated in
charging mode. Note that the maximum programming for the
charge current into the battery (ISO_Bx) is 1300 mA. For
measuring the input current limit across the full programming
range from 100 mA to 2100 mA, additional system load has to
be connected to the ISO_Sx pins.
To measure the VINx current limit, do the following:
1. Set the VVIN supply voltage to 5.0 V.
2. Set the VISO_B voltage to 3.6 V on SMU B
3. Enable charging by setting Register 0x07, bit D0
(EN_CHG), high
4. Confirm the ADP5062 charging mode:
The Battery Status indicator on the GUI must show
BAT_SNS > Vweak (see Figure 2).
The ADP5062 must start charging 80 mA to 90 mA
current into the battery.
5. Measure the current on VINx supply.
6. Use the GUI to change the input current limit programming
and repeat the measurement.
A 1300 mA charge current into the battery may not be large
enough to drive the input current up to the limit when the
current limit programming values of 1200 mA or higher are used.
Connect an additional load on the ISO_Sx node to evaluate the
higher end of the input current limit programming range.
TRICKLE CHARGE CURRENT
Trickle charge can only be activated during a battery charging
startup sequence, if the voltage level at the ISO_Bx pins is lower
than the VTRK_DEAD threshold (typically 2.5 V). When VVIN is 5.0
V, initiate a charge startup sequence by setting an I2C write of
Register 0x07, Bit D0 (EN_CHG), high. To measure the trickle
charge current level, do the following:
1. Set the VISO_B voltage (SMU or battery simulator) to 2 V.
2. Set the VIN supply voltage to 5.0 V.
3. Check that the GUI Charger Status indicator shows
Trickle Charge.
4. Check that the GUI Battery Status indicator shows
BAT_SNS < Vtrk.
5. Check the battery short detection by doing the following:
Wait for a 30 second timeout to expire
Check that the GUI shows that the I2C fault register
(Register 0x0D, Bit D3) BAT_SHR flag is set.
Use the GUI to change the battery short timeout
setting from 1 second to 180 second.
6. Measure the trickle charge current level to the battery. The
default value for ITRK_DEAD is 20 mA. It is possible to change
the trickle charge current setting from 5 mA to 80 mA
using the GUI.
7. Adjust the VISO_B voltage up until the Battery Status indicator
shows Vtrk < BAT_SNS < Vweak.
8. The Charger Status indicator on the GUI should show Fast
Charge (CC-Mode). The charge current is now programmed
ICHG + ITRK_DEAD, if it is not limited by the input current limit.

Evaluation Board User Guide UG-500
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FAST CHARGE CURRENT
To measure the fast change current, do the following:
1. Set the VIN supply voltage to 5.0 V.
2. Set VISO_B to 3.9 V.
3. Verify that the GUI Battery Status indicator shows
BAT_SNS > Vweak.
4. Set the VINx input current limit to the maximum value
2100 mA.
5. Measure the charge current into the battery. The default
value for the fast charge current is 750 mA. It is possible to
change the fast charge current setting from 50 mA to 1300 mA
using the GUI.
6. The fast charge current may be reduced because of the
following conditions:
The VBAT_SNS level is close to the termination voltage
VTRM (default 4.20 V).
The die temperature TJexceeds the isothermal
charging temperature TLIM (typically 115 °C).
TERMINATION VOLTAGE AND END OF CHARGE
(EOC) CURRENT
Measuring Termination Voltage Using SMU or Battery
Simulator
The ADP5062 fast charge constant voltage (CV) regulation is
optimized for batteries with series resistance in the 100 mΩ to
250 mΩ range. When using a SMU or a battery simulator
connected to the ISO_Bx, set the series resistance (RSin Figure 5)
within this range.
Some battery simulators, such as the Keithley 2306, have
programmable source resistance integrated in the instrument
itself. For SMU units, use an external resistor to obtain accurate
measurement results of the termination voltage.
To measure the termination voltage, do the following:
1. Set the VVIN supply voltage to 5.0 V.
2. Set the termination voltage to 4.2 V using the GUI.
3. Disable the EOC by setting the EN_EOC bit (D2) to low in
the functional settings register, Register 0x07.
4. Disable charge complete timer register, Register 0x06, using
the GUI (see Figure 3).
5. Sweep VISO_B up until Charger Status indicator in the GUI
shows Fast Charge (CV-Mode).
6. Sweep VISO_B up until charge current has dropped to 50 mA. In
fast charge CV mode, 1 mV step up of VISO_B can reduce the
charge current by several mA.
7. Measure termination voltage between the BAT_SNS (TP20)
and GND_S (TP9) nodes.
Measuring EOC Current
To measure the EOC current, do the following:
8. Use the GUI to set the termination current to 52.5 mA.
9. Step VISO_B down 100 mV.
10. Enable the EOC by setting the EN_EOC bit (D2) to high in
the functional settings register, Register 0x07.
11. Step VISO_B up and monitor the charge current for each step
until the Charger Status indicator in the GUI shows
Charge Complete. The last charge current value before
Charge Complete is the charge complete current threshold.
Charging stops and there is no current flowing into the
ISO_Bx node.
Measuring Recharge Voltage
To measure the recharge voltage, do the following:
12. Step VISO_B down and monitor the voltage until the
Charger Status indicator on the GUI shows Fast Charge
(CC-Mode) and charge current flows to the ISO_Bx node.
Last value before the charger status change is the recharge
voltage level. With default settings, the recharge voltage
threshold is 3.94 V (VISO_B).
13. Use the GUI to change the termination current and
recharge voltage programming. Repeat Step 9 to Step 12 to
evaluate different settings.

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THR INPUT AND JEITA SETTINGS
The THR input of the ADP5062 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 Error! Reference source not found..
1. Remove jumper J10 resistor.
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, do the
following:
1. Set the VIN supply voltage to 5.0 V.
2. Set VISO_B to 3.9 V.
3. Set the charge current setting to 750 mA using the GUI.
4. Set 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 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 ADP5062 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.