MPS EV2690-R-00A User manual

EV2690-R-00A
Evaluation Board of All-in-one 2.5A
Battery Charge and 2.1A Boost Discharge
EV2690-R-00A Rev. 1.0 www.MonolithicPower.com 1
9/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The EV2690-R-00A is the evaluation board
designed to demonstrate the capabilities of
MPS’ MP2690, a highly-integrated, flexible
switch-mode battery charge management for a
single-cell Li-ion and Li-Polymer battery used in
a wide range of applications.
EV2690 uses two operating modes—charge
mode and boost mode—to allow management
of system and battery power based on the state
of the input.
When input power is present, the board
charges a single-cell battery with a
programmable charge current of up to 2.5A.
In the absence of an input source, the board
switches to boost mode through the PB pin to
power the SYS pins from the battery with a
current of up to 2.1A.
The evaluation board provides 4-LED to
achieve the voltage based fuel gauge indication
and distinguish charge mode from boost mode.
To guarantee safe operation, the EV2690 has
input-over-voltage protection, battery over-
voltage protection, thermal shutdown, battery-
temperature monitoring, and a programmable
timer to prevent prolonged charging of a dead
battery.
ELECTRICAL SPECIFICATION
Parameter Symbol Value Units
Charge Mode
Input Voltage Range VIN 4.55 – 6 V
Charge-Full Voltage VBATT_Full 4.2 / 4.35
/ 4.45 V
Charge Current ICHG 2.5 A
Input Current Limit IIN_LIM 2.7 A
Boost Mode
Battery Voltage VBATT 3-4.5 V
SYS Voltage
Regulation
VSYS 5 V
SYS Output Current
Limit
ISYS 2.1 A
FEATURES
4.55V-to-6V Operating Input Voltage Range
Power Management Function Integrated
Input-Current-Limit and Input Voltage
Regulation
Up to 2.5A Programmable Charge Current
Selectable 4.45V / 4.35V / 4.2V Charge
Voltage with 0.5% Accuracy
Battery Temperature Monitoring
4-LED for battery fuel gauge indication
Programmable Timer Back-Up Protection
Battery-Reverse-Leakage Blocking
Reverse-Boost-Operation for Powering
System
Up to 94% 5V Boost Mode Efficiency @
2.1A with BATT=4.5V
Up to 2.1A Programmable Output Current
Limit in Boost Mode
APPLICATIONS
Sub-battery Applications
Power-bank Applications for Smart-Phone,
Tablet and Other Portable Devices
All MPS parts are lead-free, halogen free, and adhere to the RoHS
directive. For MPS green status, please visit MPS website under Quality
Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered
Trademarks of Monolithic Power Systems, Inc.

EV2690-R-00A – 2.5A CHARGER, 2.1A BOOST DISCHARGE, ALL-IN-ONE
EV2690-R-00A Rev. 1.0 www.MonolithicPower.com 2
9/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
EV2690-R-00A EVALUATION BOARD
(L x W x H) 2.5” x2.5”x 0.063”
(6.35cm x 6.35cm x 0.16cm)
Board Number MPS IC Number
EV2690-R-00A MP2690GR
EVALUATION BOARD SCHEMATIC
ISET
14
DP2 11
VIN
VNTC
18
LED4 23
5
3,4
SYS
NTC 19
TC 8
VCC
16
AGND
17
OLIM
15
PB 12
DM2 10
TMR 13
PGND 1
ILIM
9
MP2690GR
CSP 22
LED3 24
LED2 25
LED1 26
BATT 21
VB
20
DM1
6
DP1
7
SW 2
U2
21
22uF
C2
21
1uF
C3
21
1uF
C4
100nF
21
C1
VCC
JP2
14.7K
RILIM
NC
C13
100nF
2 1
CTMR
2K R7
2K R8
2K R9
2K R10
1 2
LED1
1 2
LED2
12
LED3
1 2
LED4
Vpull-up
VCC
20mRS2
12
2.2uH
L1
21
22uF
C10
2 1
1uF C11
10K
RT1
10K
RT2 VNTC
VNTC NTC
12
LEDTC 2K R6
VBATT
VBATT
43
12
SW1
VBUS
1
D-
2
D+
3
GND
4
U3
USB
21
22uF
C6
21
1uF
C7
21
1uF
C8
2 1
1uF
C9
SW
VIN
VSYS
VBATT
PGND
PGND
VNTC
2K
R4
VNTC 200K
R5
12
D1
54.9K
R11
Load in detect
Load in detect
Vpull-up
20m
RS1
60.4K
RISET
71.5K
ROLIM
NTC
VBUS 1
D- 2
D+ 3
ID 4
GND 5
U1
microUSB
PGND
21
22uF
C12
21
22uF
C5
JP1
VCC Vpull-up
SDP1
SDP2
DCP
15K
R2
15K
R3
200
R1
DM1
DP1
DM1
DP1
VIN
VSYS
4
1, 2, 3
5, 6, 7, 8
M2
32
1
M1
2 1
NC
C14

EV2690-R-00A – 2.5A CHARGER, 2.1A BOOST DISCHARGE, ALL-IN-ONE
EV2690-R-00A Rev. 1.0 www.MonolithicPower.com 3
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© 2015 MPS. All Rights Reserved.
EV2690-R-00A BILL OF MATERIALS
Qty Ref Value Description Package ManufactureManufacture_PN
1 D1 B130LAW Schottky;30V;1A SOD-123 B130LAW-7
2 RS1, RS2 20m Resistor;1%; 2512 Yageo RL2512FK-070R02L
1 R1 200 Film Resistor;1% 0603 Yageo RC0603FR-07200RL
1 RISET 60.4k Film Resistor;1% 0603 Yageo RC0603FR-0760K4L
1 ROLIM 71.5k Film Resistor;1% 0603 Yageo RC0603FR-0771K5L
2 R2, R3 15k Film Resistor;1%; 0603 Yageo RC0603FR-0715KL
1 RILIM 14.7k Film Resistor;1% 0603 Yageo RC0603FR-0714K7L
2 RT1, RT2 10k Film Resistor;1%; 0603 Yageo RC0603FR-0710KL
C13, C14 NC
5 C2, C5, C6,
C10, C12 22μF Ceramic Capacitor;25V;X5R; 1206 muRata GRM31CR61E226KE15
1 R5 200k Film Resistor;1% 0603 Yageo RC0603FR-07200KL
1 R11 54.9k Film Resistor;1% 0603 Yageo RC0603FR-0754K9L
6 R4, R6, R7, R8,
R9, R10 2k Film Resistor;1% 0603 LIZ CR0603JA0202G
6 C3, C4, C7, C8,
C9, C11 1μF Ceramic Capacitor;25V;X7R 0603 TDK C1608X7R1E105K
2 C1, CTMR 100nF
Ceramic
Capacitor;16V;X7R;0603 0603 TDK C1608X7R1C104K
1 LEDTC CB-
482QWC LED; WLED,20mA, DIP2
4 LED1, LED2,
LED3, LED4
BL-
HGE35A-
TRB
LED; Green 0805 BRIGHT LEDBL-HGE35A-TRB
1 M2
AM4825P-
T1 P-Channel MOSFET; -30V; SO-8 Analog Power AM4825-T1-PF
1 M1 AM2336N N-Channel MOSFET; 30V; SOT-23 Analog
Power AM2336N
6
VIN,PGND,
VBATT,
PGND,VSYS,
PGND
2mm terminal
4 DCP, JP1,
SDP1, SDP2 Jumper, 2.54mm
1 L1 2.2μH Inductor;2.2uH;0.173m;8.2A SMD TDK SPM6530T-2R2M
1 U1
Micro-USB
receptacle
1 U2 MP2690 IC QFN26 4*4 MPS MP2690GR
1 U3
USB A-type
receptacle
1 SW1
Push
Switching
button
Button; SM 4x10mm;1.5mm
Height

EV2690-R-00A – 2.5A CHARGER, 2.1A BOOST DISCHARGE, ALL-IN-ONE
EV2690-R-00A Rev. 1.0 www.MonolithicPower.com 4
9/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
PRINTED CIRCUIT BOARD LAYOUT
Figure 1: Top Silkscreen Layer Figure 2: Top Layer
Figure 3: Bottom Layer

EV2690-R-00A – 2.5A CHARGER, 2.1A BOOST DISCHARGE, ALL-IN-ONE
EV2690-R-00A Rev. 1.0 www.MonolithicPower.com 5
9/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
QUICK START GUIDE
This board is designed for the MP2690, a stand-alone switch-mode battery charge management and
system power path management device with integrated reverse directional boost from BATT to SYS.
The board’ layout accommodates most commonly-used capacitors. The default function of this board is
preset at charge mode, and the charge full voltage is preset to 4.35V for a 1-cell Li-Ion battery.
Charge Mode Setting
1. Input Current Limit
An input current limit can be set slightly below the input source’s maximum current rating. When the
input current hits this limit, the charge current will decrease to keep the input current constant at the
limit value to initially power the system. RILIM—the resistor connected to the ILIM pin—programs this
limit. To set the input current limit at 2.7A, use a RILIM of 14.7kΩ.



ILIM
ILIM
40(k )
I(A)R(k)
(1)
2. Charge-Full Voltage
To set the charge-full voltage, leave the VB pin floating for 4.2V, connect VB to L for 4.35V and
connect VB to H for 4.45V.
3. Charge Current
The charge current can be programmed via both RS1 and RISET. With given RS1=10mΩ, determine
the charge current using the following formula:


CHG
ISET
1500
I(A)
R(k)RS1(mA)
(2)
For example, for a charge current of 2.5A, use a 60kΩRISET.
Boost Mode
1. System-Output-Current Limit
Set the system-output-current limit in boost mode for the EV2690 to operate like a standard USB
charger. Set the output current limit as the following equation:



OLIM
OLIM
1500
I(A)
R(k)RS1(m)
(3)
For the other detailed description on the operation of the MP2690, please refer to the datasheet.

EV2690-R-00A – 2.5A CHARGER, 2.1A BOOST DISCHARGE, ALL-IN-ONE
EV2690-R-00A Rev. 1.0 www.MonolithicPower.com 6
9/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
EQUIPMENT REQUIREMENT
Evaluation requires the following equipments:
1. DC power source. The output voltage should exceed 6.0V, and output current greater than 3A.
2. Battery simulator or a single-cell battery pack. The battery simulator’s output rating should
exceed 4.5V/7.0A. When using a real battery pack, please observe all precautions on the
battery manufacturer’s data sheet first and ensure the charger’s setting doesn’t exceed the
battery’s absolute maximum specifications.
3. Oscilloscope. A single voltage probe and a single current probe.
4. Multi-meter.
Charge Function
1 Connect the jumper “VCC”.
2 The jumpers “DCP”, “SDP1” and “SDP2” are used for the input DP1/DM1 detection setting.
Connect “DCP” and leave “SDP1” and ”SDP2” float as default, the DP1/DM1 detection will be
set as DCP, the IINLIMIT is set through RILIM.
Otherwise, only connect “SDP1” and “SDP2”, or leave the 3 jumpers float will set the IINLIMIT =
500mA.
3 Attach the positive and negative ends of the battery to the “BATT” and “GND” terminals,
respectively. If it’s a battery simulator, please preset the voltage to 3.8V (typical value) first.
4 Preset the DC power source to 5.0V. Then attach the DC output port and ground to the “VIN”
and “GND” terminals, respectively.
5 Turn on the DC power source. The charger will start. Use the oscilloscope to verify that the 2.5A
charge current is being delivered to the battery.
U1
Figure 4: Setup for Charge Mode

EV2690-R-00A – 2.5A CHARGER, 2.1A BOOST DISCHARGE, ALL-IN-ONE
NOTICE: The information in this document is subject to change without notice. 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.
EV2690-R-00A Rev. 1.0 www.MonolithicPower.com 7
9/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
Boost Function
1 Attach the load to the “SYS” and “GND” terminals respectively.
2 Attach the positive and negative ends of the battery to the “BATT” and “GND” terminals respectively.
If it’s a battery simulator, please preset the voltage to 3.8V (typical value) firstly.
3 Short push the SW1 button, the boost will start to work. Verify the system output current is limited at
2.1A.
U1
Figure 5: Setup for Boost Mode