EV2723-QC-00A
2
3A, I C-Controlled SW Charger with NVDC
Power Path and USB OTG Evaluation Board
DESCRIPTION
FEATURES
The EV2723-QC-00A is an evaluation board for
the MP2723, a 3A, highly integrated, switchmode battery charger IC for single-cell Li-ion or
Li-polymer batteries. This device supports
NVDC
architecture
with
power
path
management and is suitable for portable
applications including tablets, mobile internet
devices, and smartphones. Its low-impedance
power path optimizes efficiency, reduces
battery charging time, and extends battery life.
The I2C serial interface can control the charging
and system settings.
The EV2723-QC-00A supports 5V input
sources, including standard USB host ports and
wall adapters with fast charging capabilities.
The EV2723-QC-00A supports USB On-TheGo (OTG) operation by supplying 5V with 1.5A.
3.7V to 5V Operating Input Voltage Range
Up to 22V Sustainable Voltage
High-Efficiency 3A, 1.35MHz Buck Charger
o D+/D- Detection for BC1.2
o Adjustable Minimum Input Voltage
Regulation for Maximum Power Point
Tracking
USB OTG with Adjustable 4.8V to 5.5V
Output: Up to 1.5A Output with Selectable
1.35MHz Boost Converter
Up to 9A Battery Discharge Current
Integrated ADC for Monitoring Input Voltage,
Input Current, Battery Voltage, Charge
Current, System Voltage, and Battery
Temperature
NVDC Power Path Management
o Instant On Works with No Battery or
Deeply Discharged Battery
o Ideal Diode Operation in Battery
Supplement Mode
I2C Port for Flexible System Parameter
Setting and Status Reporting
Full DISC Control to Support Shipping Mode
and System Restart
High Accuracy
o ±0.5% Charge Voltage Regulation
o ±5% Charge Current Regulation
o ±5% Input Current Regulation
o ±2% Output Regulation in Boost Mode
Safety Features Include Configurable JEITA
for Battery Temperature Protection, Battery
Charging Safety Timer, Thermal Regulation
and Thermal Shutdown, Input/System OverVoltage Protection, Battery Temperature
Protection
Charging Operation Indicator
ELECTRICAL SPECIFICATIONS
Parameter
Input voltage
Charge full
voltage
Charge current
Input voltage
regulation
Input current
limit
Symbol
Value
Units
VIN
3.7 to 5.5
V
VBATT_REG
ICC
VIN_MIN
IIN_LIM
4.2,
I2C-configurable
1.916,
I2C-configurable
4.3,
I2C-configurable
0.5,
I2C-configurable
V
A
V
A
OTG voltage
regulation
VIN_DSCHG
5.0,
I2C-configurable
V
OTG current
limit
IIN_DSCHG
0.5,
I2C-configurable
A
APPLICATIONS
Tablet PCs
Smartphones
Mobile Internet Devices
All MPS parts are lead-free, halogen-free, and adhere to the RoHS
directive. For MPS green status, please visit the MPS website under
Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
EV2723-QC-00A Rev. 1.0
www.MonolithicPower.com
5/27/2020
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© 2020 MPS. All Rights Reserved.
1
EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
EVALUATION BOARD
Efficiency vs. Charge Current
EFFICIENCY (%)
VIN=5V, VBATT=3.8V, RL_DCR=21mΩ
96.0
95.5
95.0
94.5
94.0
93.5
93.0
92.5
92.0
91.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
CHARGE CURRENT (A)
(LxWxH) 6.3cmx6.3cmx1.3cm
Board Number
MPS IC Number
EV2723-QC-00A
MP2723GQC-0000
EV2723-QC-00A Rev. 1.0
www.MonolithicPower.com
5/27/2020
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© 2020 MPS. All Rights Reserved.
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
QUICK START GUIDE
The EV2723-QC-00A is designed for the MP2723 when the MP2723 is used as a standalone switching
charger with integrated USB detection and USB On-the-Go (OTG) functionality. Its layout
accommodates most commonly used capacitors. The default function of this board is preset for charger
mode, and the charge-full voltage is preset to 4.2V for single-cell Li-ion batteries. The EV2723-QC-00A
can be used with multiple jumper connections for different functions (see Table 1).
Table 1: Jumper Connections
Jack
JP3
JP2
Description
Pull the OTG pin high to enable On-the-Go
(OTG) mode
Pull the CE pin low to enable charging
Factory Settings
Pull low
Pull low
JP1
Pull the NTC pin low to set NTC at a fixed
50% ratio
Pull low
P1
I2C connector
N/A
Evaluation Platform Preparation
The EV2723-QC-00A requires at least one USB port and a USB cable. The MP2723 evaluation
software must be properly installed, and an evaluation kit (EVKT-USBI2C-02) must be used to connect
the USB and I2C (see Figure 1).
Figure 1: USB to I2C Communication Kit
The MP2723 evaluation kit .exe file can be downloaded from MPS website. Double-click on the
“MP2723 Evaluation Kit” .exe file to run the MP2723 evaluation software. The software supports
Windows XP, Windows 7, and later operating systems. Figure 2 shows a recommended test set-up.
EV2723-QC-00A
VIN
DC
Power
Supply
BATT
Single-Cell
Battery Pack
or Simulator
MAIN CIRCUIT
GND
U1
GND
GND
LED1
USB to I2C
2
PC
USB to I C
Communication
Kit
I2C
NTC_Bat
H
SCL
CE
H
OTG
System
Load
H
GND
L
SDA
L
JP1
GND
DISC
INT
NTC
SYS
L
JP2
JP3
VREF NTC_Bat CE
OTG
GND
P1
Figure 2: Test Set-Up for the MP2723
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
To use the software, follow the steps below:
1. Turn on the computer, and launch the MP2723 evaluation software. The software’s main window
should appear (see Figure 3).
The status “USB: Connected” indicates a successful USB connection.
That status “MP2723 Demo board: Connected” indicates a successful EVB2723-QC-00A
connection.
Figure 3: The MP2723 Evaluation Software
Procedures
To set the parameters for the MP2723, following the steps below:
1. Ensure that the all components are connected before running the program, and the status in the
lower-left side of the GUI is indicated in green (see Figure 3).
2. Select the operation mode for the MP2723 (see Figure 4).
Figure 4: Selecting the Operation Mode
3. Select the charger functions (see Figure 5).
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
Figure 5: Selecting the Charger Functions
4. Set the input voltage regulation threshold between 3.7V and 5.2V.
The default value is 4.3V. Set the voltage regulation threshold according to the VBATT_REG setting.
For example, if VBATT_REG is set to 4.35V, the voltage regulation threshold value is recommended
to be set to 4.6V or greater (see Figure 6).
Figure 6: Setting the Input Voltage Regulation Threshold
5. Set the input current limit between 100mA and 3250mA.
The default value is 500mA. Set the input current limit so that it meets the input source capacity
(see Figure 7).
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
Figure 7: Setting the Input Current Limit
The input current limit can be set below the maximum current rating of the input source. When
the input current reaches the limit, the charge current decreases to keep the input current
constant at this limit. This protects the power system.
6. Set the constant charge current between 320mA and 2966mA.
The default charge current is set at 1916mA. The actual charge current is limited at the input
current limit setting (see Figure 8).
Figure 8: Setting the Constant Charger Current
7. Set the pre-charge current between 150mA and 750mA.
The default value is 230mA (see Figure 9).
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
Figure 9: Setting the Pre-Charge Current
8. Set the termination charge current between 100mA and 700mA.
The default value is 180mA (see Figure 10).
Figure 10: Setting the Termination Charge Current
9. Set the charge full voltage between 3.4V and 4.67V.
The default value is 4.2V (see Figure 11).
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
Figure 11: Setting the Charge Full Voltage
10. Set the pre-charge to constant current charge threshold voltage between 2.8V and 3.0V.
The default value is 3.0V (see Figure 12).
Figure 12: Setting Threshold Voltages
11. Set the battery’s auto-recharge voltage to VBATT_REG minus the set value. This range is between
100mV and 200mV.
The default value is 100mV (see Figure 13).
Figure 13: Setting the Auto-Recharge Voltage
12. Set the voltage variation between SYS regulation voltage and VSYS_MIN. This range is between
100mV and 150mV.
The default value is 150mV (see Figure 14).
Figure 14: Setting Voltage Variation
13. Set the VSYS_MIN voltage threshold between 3V and 3.75V.
The default value is 3.6V (see Figure 15).
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
Figure 15: Setting the VSYS_MIN Threshold
14. Set the NTC function according to the selected NTC thermistor and its requirements.
If this function is not required during the evaluation, leave it at the default setting (see Figure 16).
Figure 16: Setting the NTC Function
15. Set the thermal regulation threshold between 60°C and 120°C.
The default value is 120°C (see Figure 17).
Figure 17: Setting the Thermal Regulation Threshold
16. Set the switching (SW) frequency between 1.35MHz and 1MHz.
The default value is 1.35MHz (see Figure 18).
Figure 18: Setting the SW Frequency
17. Set the charge timer between 5hrs and 20hrs.
The default value is 12hrs (see Figure 19).
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
Figure 19: Setting the Charge Timer
The integrated charge timer provides backup protection to prevent a damaged battery from
being charged after a certain time. The timer function can be disabled.
Boost Mode
When the MP2723 is programmed to On-the-Go (OTG) mode, the output voltage and current limit can
be controlled via the I2C. In this situation, follow the steps below:
1. Turn off and disconnect the power at VIN to PGND.
2. If the constant voltage load connected from BATT+ to GND is not a four-quadrant supply (sources
current), remove the load. Use the power source that was disconnected in step 1, set it to 4.0V with
a 3.5A current limit, then connect the power source between BATT+ and PGND.
3. Apply resistor (5W or greater, R = 4Ω to 10Ω) across VIN (+) to PGND (-).
4. Pull JP3 high, and select OTG in the menu (see Figure 20).
Figure 20: Selecting On-the-Go (OTG) Mode
5. Set the OTG output voltage regulation threshold between 4.8V and 5.5V.
The default value is 5.0V (see Figure 21).
Figure 21: Setting the OTG Output Voltage Regulation
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
6. Set the OTG current limit between 0.5A and 1.5A.
The default value is 0.5A (see Figure 22).
Figure 22: Setting the OTG Current Limit
Other Modes
Figure 23 shows shipping mode control.
Figure 23: Shipping Mode Control
Figure 24 shows additional adjustable parameters.
Figure 24: Adjustable Parameters for the MP2723
Figure 25 shows watchdog control.
Figure 25: Watchdog Control
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
Figure 26 shows register auto-monitoring.
Figure 26: Register Auto-Monitoring
Figure 27 shows ADC configuration.
Figure 27: ADC Configuration
Figure 28 shows how to monitor the MP2723 operation status and fault report.
Figure 28: Monitoring the MP2723 Status and Faults
EV2723-QC-00A Rev. 1.0
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5/27/2020
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
EVALUATION BOARD SCHEMATIC
Figure 29: Evaluation Board Schematic
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
BILL OF MATERIALS
Qty
Ref
Value
Description
Package
Manufacturer
Manufacturer P/N
0603
muRata
GRM188R71E105KA12D
1206
muRata
GRM31CR61H106KA12L
1206
muRata
0603
muRata
GRM188R61C106KAALD
0603
muRata
GRM188R71H473KA61D
0603
muRata
0805
muRata
0805
muRata
SMA
HQ
1
C1
1μF
1
C2
10μF
1
C3
NC
1
C4
10μF
1
C5
47nF
2
C6, C7
NC
2
C8, C10
22μF
2
C9, C11
NC
2
D1, D2
NC
Ceramic capacitor,
25V, X7R, 0603
Ceramic capacitor,
50V, X5R, 1206
Ceramic capacitor,
50V, X5R, 1206
Ceramic capacitor,
16V, X5R, 0603
Ceramic capacitor,
50V, X7R, 0603
Ceramic capacitor,
16V, X5R, 0603
Ceramic capacitor,
16V, X5R, 0805
Ceramic capacitor,
16V, X5R, 0805
Diode, 50V, 3A
1
L1
1.0μH
Inductor, 1.0µH
SMD
Cyntec
HTEP32251B-1R0MIR-89
1
LED1
RED
BL-HUF35A-TRB
0805
Bright LED
BL-HUF35A-TRB
2
R1, R2
2kΩ
Film resistor, 1%
0603
Yageo
RC0603FR-072KL
3
R3, R4, R5
100kΩ
Film resistor, 5%
0603
Yageo
RC0603JR-07100KL
1
R6
0Ω
Film resistor, 1%
0603
Yageo
RC0603FR-070RL
1
R7
NC
Film resistor, 1%
0603
Yageo
1
RILIM
1kΩ
Film resistor, 1%
0603
Yageo
RC0603FR-071KL
2
RT1, RT2
10kΩ
0603
Yageo
RC0603FR-0710KL
1
SW1
Film resistor, 1%
Button, SM
4mmx10mm,
1.5mm height
3
3
JP1, JP2,
JP3
JP1, JP2,
JP3
1
P1
8
DISC,
VREF,
AGND,
OTG, CE,
INT,
NTC,
NTC_Bat,
GRM21BR61C226ME44L
2.54mm connector
2.54mm connector,
shorter
Header, 5-pin, dual
row
2.54mm connector
EV2723-QC-00A Rev. 1.0
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5/27/2020
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
BILL OF MATERIALS (continued)
Qty
12
6
Ref
Value
DM, DP,
VBATT,
GND, VSYS,
BST, STAT,
SW,
VPMID,
GND, VIN,
ILIM
VIN, PGND,
VBATT,
PGND,
PGND, VSYS
Description
Package
Manufacturer
Manufacturer P/N
Test point
(yellow)
2mm
1
U1
MP2723
3A I2C-controlled
SW charger
QFN-26
(3.5mmx3.5mm)
MPS
MP2723GQC0000
1
U2
MicroUSB
Micro-USB
DIP
Wurth
629105150521
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
EVB TEST RESULTS
VIN = 5.0V, VBATT = full range, I2C-controlled, ICC = 1.916A, IIN_LIM = 3250mA, VIN_MIN = 4.3V,
TA = 25°C, L1 = 1.0μH, CBATT = 22μF, CSYS = 22μF, CIN = 1μF, CPMID = 10μF, unless otherwise noted.
Battery Charge Curve
Auto-Recharge
VIN = 5V, VBATT_REG = 4.2V, ISYS = 0A
VIN = 5V, VBATT_REG = 4.2V, ISYS = 0A
CH1: VSYS
CH2: VBATT
CH3: VSTAT
CH2: VBATT
CH3: VSTAT
CH4: IBATT
CH4: IBATT
CH1: VSYS
Trickle Charge
Pre-Charge
VIN = 5V, VBATT = 1.0V, ISYS = 500mA
VIN = 5V, VBATT = 2.5V, IPRE = 680mA
CH3: VSW
CH1: VSYS
CH1: VSYS
CH2: VBATT
CH2: VBATT
CH4: IBATT
CH4: IBATT
CH3: VSW
Constant Current Charge
Constant Current Charge
VIN = 5V, VBATT = 3.3V, ICC = 1916mA
VIN = 5V, VBATT = 3.8V, ICC = 1916mA
CH2: VBATT
CH2: VBATT
CH1: VSYS
CH1: VSYS
CH3: VSW
CH3: VSW
CH4: IBATT
CH4: IBATT
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
EVB TEST RESULTS (continued)
VIN = 5.0V, VBATT = full range, I2C-controlled, ICC = 1.916A, IIN_LIM = 3250mA, VIN_MIN = 4.3V,
TA = 25°C, L1 = 1.0μH, CBATT = 22μF, CSYS = 22μF, CIN = 1μF, CPMID = 10μF, unless otherwise noted.
Battery Supplement Mode
Constant Voltage Charge
VIN = 5V, VBATT = 3.8V, ISYS = 4.5A
VIN = 5V, VBATT = 4.19V, ISYS = 0A
CH2: VBATT
CH3: VSW
CH1: VSYS
CH3: VSW
CH2: VBATT
CH1: VSYS
CH4: IBATT
CH4: IBATT
Input Current Limit
Input Voltage Limit
VIN = 5V, VBATT = 3.8V, IIN_LIM = 1800mA
VIN = 5V (2A), VBATT = 3.3V, VIN_MIN = 4.6V
CH2: IIN
CH3: ISYS
CH1: VSYS
CH2: ISYS
CH4: IBATT
CH3: VIN
CH1: VSYS
CH4: IBATT
Power-On/Off Waveform
Power-On/Off Waveform
VIN = 5V, IIN_LIM = 500mA, VBATT = 3.8V,
ISYS = 2.5A
VIN = 5V, IIN_LIM = 500mA, VBATT = 3.3V,
ISYS = 0.5A
CH2: VIN
CH2: VIN
CH3: VSW
CH3: VSW
CH1: VSYS
CH1: VSYS
CH4: IBATT
CH4: IBATT
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
EVB TEST RESULTS (continued)
VIN = 5.0V, VBATT = full range, I2C-controlled, ICC = 1.916A, IIN_LIM = 3250mA, VIN_MIN = 4.3V,
TA = 25°C, L1 = 1.0μH, CBATT = 22μF, CSYS = 22μF, CIN = 1μF, CPMID = 10μF, unless otherwise noted.
Suspend Mode On/Off
Charge On/Off
VIN = 5V, IIN_LMT = 500mA, VBATT = 4.0V,
ISYS = 0.5A
VIN = 5V, VBATT = 4.0V, ISYS = 0A
CH1: VSYS
CH2: VBATT
CH3: VSW
CH1: VSYS
CH3: CE
CH2: VBATT
CH4: IBATT
CH4: IBATT
BATFET On/Off
VIN Hot Insertion/Removal
VIN = 5V, VBATT = 4.0V, ISYS = 4A
VIN = 5V, IIN_LMT = 500mA, VBATT = 3.3V,
ISYS = 0.5A
CH1: VSYS
CH3: VSW
CH1: VSYS
CH2: VBATT
CH2: VIN
CH4: IBATT
CH3: VSW
CH4: IBATT
SYS Load Transient
VIN OVP Test
VIN = 5V, VBATT = 3.3V, charge disabled,
ISYS = 1A to 3A
VIN = 5V to 7V, VBATT = 3.8V, ISYS = 1A
CH1: VSYS
(3.7V offset)
CH2: VBATT
CH2: VIN
CH3: VSW
CH3: VSW
CH4: ISYS
CH4: IBATT
CH1: VSYS
EV2723-QC-00A Rev. 1.0
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EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
EVB TEST RESULTS (continued)
VIN = 5.0V, VBATT = full range, I2C-controlled, ICC = 1.916A, IIN_LIM = 3250mA, VIN_MIN = 4.3V,
TA = 25°C, L1 = 1.0μH, CBATT = 22μF, CSYS = 22μF, CIN = 1μF, CPMID = 10μF, unless otherwise noted.
System Reset Mode
Battery Discharge Current
VIN = float, VBATT = 3.8V, ISYS = 2A
VIN = float, VBATT = 4.0V, ISYS = 9.5A maximum
CH1: VSYS
CH1: VSYS
CH2: VBATT
CH2: VBATT
CH3: DSIC
CH4: ISYS
CH4: IBATT
CH3: VREF
OTG Mode On
OTG Steady State Operation
VIN = float, OTG mode, VBATT = 3.3V,
IIN_DSCHG = 0.5A, IOTG = 0.5A
VIN = float, OTG mode, VBATT = 4.0V,
IIN_DSCHG = 1.5A, IOTG = 1A
CH1: VIN
CH2: VBATT
CH2: VBATT
CH1: VIN
CH3: VSW
CH3: VSW
CH4: IOTG
CH4: IL
OTG Voltage Regulation
NTC JEITA Operation
VIN = float, OTG mode, VBATT = 4.0V,
IIN_DSCHG = 1.5A, IOTG = 0A to 1.5A
VIN = 5V, VBATT = 4.09V, ISYS = 0A,
JEITA_ISET = 50%, JEITA_VSET = -100mV
CH1: VIN
CH1: VSYS
CH2: VBATT
CH2: VBATT
CH4: IOTG
CH4: IBATT
CH3: VNTC
CH3: VSW
EV2723-QC-00A Rev. 1.0
www.MonolithicPower.com
5/27/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.
19
EV2723-QC-00A – 3A, I2C SW CHARGER WITH NVDC PPM AND USB OTG EVAL BOARD
PCB LAYOUT
Figure 30: Top Layer
Figure 31: Mid-Layer 1
Figure 32: Mid-Layer 2
Figure 33: Bottom Layer
Notice: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third-party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
EV2723-QC-00A Rev. 1.0
www.MonolithicPower.com
5/27/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.
20
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