MPS EV2633-R-01A User manual

EV2633-R-01A
Full Power Management IC
For Single-Cell Battery System
EV2633-R-01A Rev.1.0 www.MonolithicPower.com 1
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The Future of Analog IC Technology
DESCRIPTION
The EV2633-R-01A is the evaluation board
designed to demonstrate the capabilities of
MPS’ MP2633, a highly-integrated, flexible
switch-mode battery charge management and
system power path management device for a
single-cell Li-ion and Li-Polymer battery used in
a wide range of portable applications.
EV2633 uses two operation 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 1.5A.
In the absence of an input source, the board
switches to boost mode through the MODE pin
to power the SYS pins from the battery with a
current up to 1A.
The evaluation board provides full-operating-
status indication to distinguish charge mode
from boost mode.
For guaranteed safe operation, the EV2633 has
input-over-voltage protection, battery over-
voltage protection, thermal shutdown, battery-
temperature monitoring, and programmable
timer to prevent prolonged charging of a dead
battery.
ELECTRICAL SPECIFICATION
Parameter Symbol Value Units
Input Voltage Range VIN 4.24 – 6 V
Charge Full Voltage VBATT_Full 4.2/ 3.6 V
Charge Current ICHG 1.5 A
Input Current Limit IIN_LIM 2 A
Battery Voltage VBATT 2.5 – 4.35 V
SYS Voltage
Regulation
VSYS 5 V
SYS Output Current
Limit
ISYS 1 A
FEATURES
•4.5V-to-6V Operating Input Voltage Range
•Power Management Function Integrated
Input-Current Limit and Input-Voltage
Regulation
•Up to 1.5A Programmable Charge Current
•Selectable 3.6V / 4.2V Charge Voltage with
0.5% Accuracy
•Battery Temperature Monitoring
•Full Operation Indicators
•Programmable Timer-Back-up Protection
•Battery-Reverse-Leakage Blocking
•Reverse-Boost-Operation for Powering
System
•Up to 91% 5V Boost Mode Efficiency @ 1A
•Up to 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 and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology”, are Registered Trademarks
of Monolithic Power Systems, Inc.

EV2633-R-01A – 1.5A SINGLE-CELL SWITCH MODE BATTERY CHARGER
EV2633-R-01A Rev.1.0 www.MonolithicPower.com 2
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EV2633-R-01A EVALUATION BOARD
(L × W × H) 6.1cm × 5.1cm × 1.3cm
Board Number MPS IC Number
EV2633-R-01A MP2633
EVALUATION BOARD SCHEMATIC

EV2633-R-01A – 1.5A SINGLE-CELL SWITCH MODE BATTERY CHARGER
EV2633-R-01A Rev.1.0 www.MonolithicPower.com 3
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EV2633-R-01A BILL OF MATERIALS
Qty Ref Value Description Package Manufacture Manufacture PN
1 C1 1F Ceramic Capacitor;
25V;X5R CAP/0603 TDK C1608X5R1E105K
1 C2 1F Ceramic Capacitor;
16V;X7R; CAP/0603 muRata, GRM188R71C105KA12D
4
C3,C7,
CSYS,
CBATT
22F Ceramic Capacitor;
10V;X7R; CAP/1206 muRata GRM31CR71A226KE15L
2 C4,
CTMR 100nF Ceramic Capacitor; 50V;X7R; CAP/0603 muRata GRM188R71H104KA93D
2 C5, C6 NC
1 C8 47pF
Ceramic Capacitor;
50V;C0G; CAP/0603 TDK C1608C0G1H470J
1 CIN 22F Ceramic Capacitor;
25V;X5R; CAP/1206 muRata GRM31CR61E226KE15
1 L1 4.7H Inductor;4.7H; SMD Wurth 744311470
Cooper DR73-4R7-R
2 LED1,
LED3
BL-
HUF35A
-TRB
LED;Red LED/SMD/0805 BRIGHT LED BL-HUF35A-TRB
1 LED2
HL-PSC-
2012H203
BC
LED;Blue LED/SMD/0805 BRIGHT LED HL-PSC-2012H203BC
1 R1 31.6k 1% Film Resistor;1%; RES/0603 Yageo RC0603FR-0731K6L
4
R2,R5,
RT1,
RT2
10k 1% Film Resistor;1%; RES/0603 Yageo RC0603FR-0710KL
1 R3 15k Film Resistor;1% RES/0603 Yageo RC0603FR-0715KL
2 R4, RL 5.1k Film Resistor;1% RES/0603 Yageo RC0603FR-075K1L
3 R6,
R7, R8 10k Film Resistor;5%; RES/0603 Yageo RC0603JR-0710K
3 R9,R10,
R11 2k Film Resistor;5%;1/10W RES/0603 LIZ CR0603JA0202G
1 RH 21.5k Film Resistor;1% RES/0603 Yageo RC0603FR-0721K5L
1 RILIM 20k 1% Film Resistor;1%; RES/0603 Yageo RC0603FR-0720KL
1 RISET 37.4k 1% Film Resistor;1%; RES/0603 Yageo RC0603FR-0737K4L
1 ROLM 95.2k 1% Film Resistor;1% RES/0603 Yageo RC0603FR-0795K2L
1 RS1 50m
Sense Resistor;
1%;1/2W; RES/1206 Yageo RL1206FR-070R050L
5
JP1,
JP2,
JP3,
JP4,
JP5
JUMPER/3P/DIP/2.
54mm
1 U1 QFN24/4X4MM/EP MPS MP2633GR

EV2633-R-01A – 1.5A SINGLE-CELL SWITCH MODE BATTERY CHARGER
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PRINTED CIRCUIT BOARD LAYOUT
Figure 1: Top Silkscreen Layer
Figure 2: Top Layer
Figure 3: Bottom Layer

EV2633-R-01A – 1.5A SINGLE-CELL SWITCH MODE BATTERY CHARGER
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QUICK START GUIDE
This board is designed for the MP2633, 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’s layout accommodates most commonly-used capacitors. The default function of this board
is preset at charger mode, and the charge full voltage is preset to 4.2V for 1 cell Li-Ion battery.
Charge Mode Setting
1. Input Over Voltage Limit
The MP2633 has a PWIN pin to monitor the input voltage. Once the voltage input voltage at PWIN
pin exceeds 1.15V, the input to system path is cut off to protect the device from being damaged.
The maximum input is 6V, and the external resistor divider must meet the following equation:
RLRH
RL
6
15.1
V
V
IN
PWIN
+
== (1)
Assume that RL=5.1k, then RH is 21.5k.
2. REG Voltage
When the input power source is not sufficient to support both the charge current and system load
current, the charge current is reduced to allow priority of system power and maintain the input
voltage avoid dropping further. The REG pin is the input-voltage regulation feedback. The input
voltage can be regulated by a resistor divider from VIN pin to REG pin to AGND
)V(
4R
4RR3
V2.1VREG
+
×= (2)
If VREG=4.75V, given R4=5.1k, then R3=15k.
3. 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 be decreased 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 2A, use an RILIM of 20k.
ILIM
ILIM
40.5(kV)
I(A)R(k) =(3)
4. Charge-Full Voltage
To set the charge full voltage, either leave VB pin floating, or connect it to high logic for 4.2V and to
connect to GND for 3.6V.
5. Charge Current
The charge current can be programmed via both RS1 and RISET. With given RS1=50mOhm,
determine the charge using the following formula:
CHG
ISET
70(k)40(mV)
I(A)=
R(k)RS1(m)
×(4)
For example, for a charge current of 1.5A, use a 37.4kRISET.

EV2633-R-01A – 1.5A SINGLE-CELL SWITCH MODE BATTERY CHARGER
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6. Charge Timer
The MP2633 has a charge timer as an external precaution against charging damaged batteries.
The total charge time can be set as:
)A(I
A1
F1.0
)F(C
Hours6
CHG
TMR
TMR_TOTAL ×
μ
μ
×=τ (5)
So if the charge current is 1.5A, a CTMR of 0.1F provides a tTOTAL_TMR of 4hours.
Boost Mode Setting
1. System Output Voltage
The MODE pin can enable or disable the EV2633 when in boost mode. The resistor divider—R1
and R2 – can adjust the output voltage as per the following equation:
SYS _ REG
R1 R2
V(V)1.2V
R2
+
=× (6)
Select R1 and R2 as 31.6kand 10krespectively, for a system voltage of 5V.
2. System-Output-Current Limit
Set the system-output-current limit in boost mode for the EV2633 to operate like a standard adapter.
Set the output current limit as per the following equation:
)m(1RS)k(R
7.1)mV(40)k(70
)A(I
OLIM
OLIM Ω×Ω
×
×
Ω
=(7)
Others
1. Operating Frequency Setting
The operation frequency can be programmable to optimize the design for both charge and boost
modes. Set the frequency to 1.2MHz by connecting the FREQ pin to “H” or leaving the FREQ pin
floating, while set to 600kHz by connecting the FREQ pin to “L”.
For the other detailed description on the operation of the MP2633, please refer to the datasheet.

EV2633-R-01A – 1.5A SINGLE-CELL SWITCH MODE BATTERY CHARGER
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EQUIPMENT REQUIREMENT
Evaluation requires the following equipments:
1. DC power source. The output voltage should exceed 6V, and output current greater than 1.5A.
2. Battery simulator or a single-cell battery pack. The battery simulator’ output rating should
exceed 4.5V/1.5A. When using a real battery pack, please observe all precautions on the
battery manufacturer’s data sheet first and then ensure the charger’s setting doesn’t exceed
the battery’s absolute maximum specification.
3. An oscilloscope. A single voltage probe and a single current probe are required at least.
4. A multi-meter.
Charge Function
1. Connect the jumper “EN” to “H” and the “MODE” to “L” to shunts, 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) first.
3. Preset the DC power source to 5V. Then attach the DC output port and ground to the “VIN” and
“GND” terminals, respectively.
4. Turn on the DC power source. The charger will start. Use the oscilloscope to verify that the 1.5A
charge current is being delivered to the battery.
5. Remove the shunt between the “EN” and “H” to disable charging.
6. Re-insert the shunt between the “EN” and “H” to enable charging.
Figure 4—Setup for Charge Mode

EV2633-R-01A – 1.5A SINGLE-CELL SWITCH MODE BATTERY CHARGER
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.
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Boost Function
1. Connect the jumper “MODE” to “H” and the “EN” to “L” with shunts respectively!
2. Attach the load to the “SYS” and “GND” terminals respectively.
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) firstly.
The boost will start to work. Verify the system output current is limited at 1A.
4. Remove the shunt between the “MODE” and “H” to disable boost.
5. Install the shunt between the “MODE” and “H” to enable boost.
Figure 5—Setup for Boost Mode