MPS EV2632-R-01A User manual

EV2632-R-01A
Evaluation Board of All-in-one
3A Battery Charge and 3A Boost Discharge
EV2632-R-01A Rev. 1.01 www.MonolithicPower.com 1
1/14/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The EV2632-R-01A is the evaluation board
designed to demonstrate the capabilities of
MPS’ MP2632, 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.
EV2632 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 3A.
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 3A.
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 EV2632 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 4.65 – 6 V
Charge-Full Voltage VBATT_Full 4.2 / 4.35
/ 4.45 V
Charge Current ICHG 3 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 3 A
FEATURES
•4.65V-to-6V Operating Input Voltage Range
•Power Management Function Integrated
Input-Current-Limit and Input Voltage
Regulation
•Up to 3A 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 @ 3A
with BATT=4.5V
•Up to 3A 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.
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EV2632-R-01A – 3A CHARGER, 3A BOOST DISCHARGE, ALL-IN-ONE
EV2632-R-01A Rev. 1.01 www.MonolithicPower.com 2
1/14/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
EV2632-R-01A 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
EV2632-R-01A MP2632GR
EVALUATION BOARD SCHEMATIC
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
1 2
2.2uH
L1
21
22uF
C10
2 1
1uF C11
10K
RT1
10K
RT2 VNTC
VNTC NTC
1 2
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
RILIM = 88.7K for 450mA ILIM, 49.9K for 810mA ILIM, 14.7K for 2.7A ILIM
ROLIM =150K for 1A IOLIM, 60.4K for 2.48A IOLIM, 49.9K for 3A IOLIM
RISET = 150K for 1A ICHG, 75K for 2A ICHG, 49.9K for 3A for ICHG
VNTC
2K
R4
VNTC 200K
R5
12
D1
200K
R11
Load in detect
Load in detect
Vpull-up
20m
RS1
49.9K
RISET
49.9K
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
32
1
M3
VNTC
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
MP2632GR-JC
CSP 22
LED3 24
LED2 25
LED1 26
BATT 21
VB
20
DM1
6
DP1
7
SW 2
U2
MP2632GR-JC
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EV2632-R-01A – 3A CHARGER, 3A BOOST DISCHARGE, ALL-IN-ONE
EV2632-R-01A Rev. 1.01 www.MonolithicPower.com 3
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EV2632-R-01A BILL OF MATERIALS
Qty Ref Value Description Package ManufactureManufacture_PN
1 R1 200 Film Resistor;1% 0603 Yageo RC0603FR-07200RL
2 R2, R3 15k Film Resistor;5%; 0603 Yageo RC0603JR-0715KL
6 R4, R6, R7, R8,
R9, R10 2k Film Resistor;5% 0603 Yageo RC0603JR-072KL
1 R5,R11 200k Film Resistor;5% 0603 Yageo RC0603JR-07200KL
2 RS1, RS2 20m Resistor;1%; 2512 Yageo RL2512FK-070R02L
2 RISET, ROLIM 49.9k Film Resistor;1% 0603 Yageo RC0603FR-0749K9L
1 RILIM 14.7k Film Resistor;1% 0603 Yageo RC0603FR-0714K7L
2 RT1, RT2 10k Film Resistor;5%; 0603 Yageo RC0603JR-0710KL
2 C1, CTMR 100nF
Ceramic
Capacitor;16V;X7R;0603 0603 TDK C1608X7R1C104K
5 C2, C5, C6,
C10, C12 22μF Ceramic Capacitor;25V;X5R; 1206 muRata GRM31CR61E226KE15
6 C3, C4, C7, C8,
C9, C11 1μF Ceramic Capacitor;25V;X7R 0603 TDK C1608X7R1E105K
C13, C14 NC
1 LEDTC CB-
482QWC LED; WLED,20mA, DIP2
4 LED1, LED2,
LED3, LED4
BL-
HGE35A-
TRB
LED; Green 0805 BRIGHT LEDBL-HGE35A-TRB
1 D1 B130LAW Schottky;30V;1A SOD-123 B130LAW-7
1 M1 AM2336N N-Channel MOSFET; 30V; SOT-23 Analog
Power AM2336N
1 M2
AM4825P-
T1 P-Channel MOSFET; -30V; SO-8 Analog Power AM4825-T1-PF
1 M3 AM2305 P-Channel MOSFET, 20V SOT-23 Analog
Power AM2305PE-T1
1 L1 2.2μH Inductor;2.2uH;0.173m;8.2A SMD TDK SPM6530T-2R2M
1 SW1
Push
Switching
button
Button; SM 4x10mm;1.5mm
Height
1 U1
Micro-USB
receptacle
1 U2 MP2632 IC QFN26 4*4 MPS MP2632GR
1 U3
USB A-type
receptacle
6
VIN,PGND,
VBATT,
PGND,VSYS,
PGND
2mm terminal
4 DCP, JP1,
SDP1, SDP2 Jumper, 2.54mm
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EV2632-R-01A – 3A CHARGER, 3A BOOST DISCHARGE, ALL-IN-ONE
EV2632-R-01A Rev. 1.01 www.MonolithicPower.com 4
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© 2016 MPS. All Rights Reserved.
PRINTED CIRCUIT BOARD LAYOUT (1)
Figure 1: Top Silkscreen Layer Figure 2: Top Layer
Figure 3: Bottom Layer
NOTE:
1) EV2632-R-01A is modified from EV2632-R-00A by adding M3 manually, so the PCB layout has no difference of the two boards.
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EV2632-R-01A – 3A CHARGER, 3A BOOST DISCHARGE, ALL-IN-ONE
EV2632-R-01A Rev. 1.01 www.MonolithicPower.com 5
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© 2016 MPS. All Rights Reserved.
QUICK START GUIDE
This board is designed for the MP2632, 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.
Ω
=
Ω
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:
=
Ω×
CHG
ISET
1500
I(A)
R(k)RS1(mA)
(2)
For example, for a charge current of 3A, use a 49.9kΩRISET
Boost Mode
1. System-Output-Current Limit
Set the system-output-current limit in boost mode for the EV2632 to operate like a standard USB
charger. Set the output current limit as the following equation:
=
Ω
×Ω
OLIM
OLIM
1500
I(A)
R(k)RS1(m)
(3)
2. BOOST Automatic On when Load is Applied
The load is applied to the USB port connected to the SYS output which is U3 in the schematic.
To detect the USB load plug in, the RC network (R11,C14) is connected to USB port (U3) shield
(VBUS) Once the USB load is inserted to the SYS through U3, the USB connector shield is grounded
through USB load. So a short pulse (high to Low for >1.5ms) is generated in PB pin, resulting in
start of boost operation. M2 is used to decouple USB port from the VSYS cap (C2, CSYS), M1 is
used to drive the M2.Once the Phone is plugged in, the voltage at C14 will be pulled down because
the input cap inside phone is far larger than C14 (even don’t need), so that the falling edge will be
delivered to PB pin to enable boost automatically. M3 is used to cutoff the PB pin to the USB port
when the BOOST is turned on. Then PB pin state will not be affect by the spec of the inserted load
of the USB port. Choose M3 with low turning on threshold (-0.7V is recommended) which could
make sure it is fully on when the load is inserted and its on resistance will not cause too much
voltage drop.
For the other detailed description on the operation of the MP2632, please refer to the datasheet.
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EV2632-R-01A – 3A CHARGER, 3A BOOST DISCHARGE, ALL-IN-ONE
EV2632-R-01A Rev. 1.01 www.MonolithicPower.com 6
1/14/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 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 3A
charge current is being delivered to the battery.
U1
MAIN CIRCUIT
EV2632-R-01A
GND
VIN BATT
GND
1-Cell
Battery Pack
or Simulator
JP1
LED3
VNTC
AGND VCC NTC
VBLH
JP2 VCC
GND
SYS
LED2 LED1 LED4
DCP SDP1
SDP2
SW1
DC
Power
Supply
Figure 4: Setup for Charge Mode
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EV2632-R-01A – 3A CHARGER, 3A 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.
EV2632-R-00A Rev. 1.01 www.MonolithicPower.com 7
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© 2016 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
3A.
U1
MAIN CIRCUIT
EV2632-R-01A
GND
VIN BATT
GND
1-Cell
Battery Pack
or Simulator
JP1
LED3
VNTC
AGND VCC NTC
VBLH
JP2 VCC
GND
SYS
LED2 LED1 LED4
DCP SDP1
SDP2
E-LOAD
SW1
Figure 5: Setup for Boost Mode
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