MPS EV2637A-R-00A Manual

MPS EV2637A-R-00A Manual

2.5a single cell switch mode battery charger with power path management (ppm) and 2.4a boost current with trickle timer

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DESCRIPTION

The EV2637A-R-00A is the evaluation board
designed to demonstrate the capabilities of
MPS' MP2637A, 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.
EV2637A 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
programmable charge current of up to 2.5A.
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 of up to 2.1A.
The evaluation board provides full-operating-
status indicators to distinguish charge mode
from boost mode.
To guarantee safe operation, the EV2637A has
input-over-voltage
protection,
voltage protection, thermal shutdown, battery-
temperature monitoring, and a programmable
timer to prevent prolonged charging of a dead
battery.

ELECTRICAL SPECIFICATION

Parameter
Symbol
Charge Mode
Input Voltage Range
Charge-Full Voltage
V
Charge Current
Input Current Limit
Battery Voltage
SYS Voltage
Regulation
SYS Output Current
Limit
EV2637A-R-00A Rev. 1.0
10/11/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
battery
with
battery
over-
Value
Units
4.5 – 6
V
V
IN
4.055 /4.2
V
BATT_Full
I
2.5
A
CHG
I
2.7
A
IN_LIM
V
3-4.5
V
BATT
V
SYS
5
V
I
SYS
2.2
A
www.MonolithicPower.com
© 2019 MPS. All Rights Reserved.
2.5A Single Cell Switch Mode Battery Charger
with Power Path Management (PPM)
and 2.4A Boost Current with Trickle Timer

FEATURES

4.5V-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 4.055V / 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
a
Up to 93% 5V Boost Mode Efficiency @
2.1A with BATT=4.2V
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 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.
EV2637A-R-00A
1

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Summary of Contents for MPS EV2637A-R-00A

  • Page 1  Power-bank Applications for Smart-Phone, from boost mode. Tablet and Other Portable Devices To guarantee safe operation, the EV2637A has All MPS parts are lead-free and adhere to the RoHS directive. For MPS green input-over-voltage protection, battery over- status, please visit MPS website under Products, Quality Assurance page.
  • Page 2 (L × W × H) 6.1cm × 5.1cm × 1.3cm Board Number MPS IC Number EV2637A-R-00A MP2637AGR EVALUATION BOARD SCHEMATIC EV2637A-R-00A Rev. 1.0 www.MonolithicPower.com 10/11/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved.
  • Page 3 Yageo RC0603FR-0753K6L 53.6k Ω Film Resistor;1% 1206 Vishay WSL1206-18 Ω Film Resistor;5%; 0603 Yageo RC0603JR-070RL MP2637 QFN24 MP2637AGR (4mmx4mm) EV2637A-R-00A Rev. 1.0 www.MonolithicPower.com 10/11/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved.
  • Page 4 EV2637A-R-00A –2.5A SINGLE-CELL SWITCH MODE BATTERY CHARGER PRINTED CIRCUIT BOARD LAYOUT Figure 1: Top Silkscreen Layer Figure 2: Top Layer Figure 3: Bottom Layer EV2637A-R-00A Rev. 1.0 www.MonolithicPower.com 10/11/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved.
  • Page 5   (k ) RS1(mA) ISET For example, for a charge current of 2.5A, use a 47.5kΩ R ISET EV2637A-R-00A Rev. 1.0 www.MonolithicPower.com 10/11/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved.
  • Page 6 Set the output current limit as per the following equation: For the other detailed description on the operation of the MP2637A, please refer to the datasheet. EV2637A-R-00A Rev. 1.0 www.MonolithicPower.com 10/11/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved.
  • Page 7 LED3 LED1 1-Cell Battery Pack Power or Simulator Supply MAIN CIRCUIT BATT EV2637A-R-00A Figure 4: Setup for Charge Mode EV2637A-R-00A Rev. 1.0 www.MonolithicPower.com 10/11/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved.
  • Page 8 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.

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