OLIMEX USB-uLiPo User manual

USB-uLiPo
battery charger
USER’S MANUAL
Revision B, May 2014
Designed by OLIMEX Ltd, 2013
All boards produced by Olimex LTD are ROHS compliant

OLIMEX© 014 USB-PWR user's manual
DISCLAIMER
© 013 Olimex Ltd. Olimex®, logo and combinations thereof, are registered trademarks of Olimex Ltd.
Other product names may be trademarks of others and the rights belong to their respective owners.
The info mation in this document is p ovided in connection with Olimex p oducts. No license, exp ess
o implied o othe wise, to any intellectual p ope ty ight is g anted by this document o in connection
with the sale of Olimex p oducts.
This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License. To view a
copy of this license, visit http://www.creativecommons.org/licenses/by-sa/3.0/.
This hardware design by Olimex LTD is licensed under a Creative Commons Attribution-ShareAlike 3.0
Unported License.
The software is released under GPL.
It is possible that the pictures in this manual differ from the latest revision of the board.
The product described in this document is subject to continuous development and improvements. All
particulars of the product and its use contained in this document are given by OLIMEX in good faith.
However all warranties implied or expressed including but not limited to implied warranties of
merchantability or fitness for purpose are excluded. This document is intended only to assist the reader in the
use of the product. OLIMEX Ltd. shall not be liable for any loss or damage arising from the use of any
information in this document or any error or omission in such information or any incorrect use of the
product.
This evaluation board/kit is intended for use for engineering development, demonstration, or evaluation
purposes only and is not considered by OLIMEX to be a finished end-product fit for general consumer use.
Persons handling the product must have electronics training and observe good engineering practice
standards. As such, the goods being provided are not intended to be complete in terms of required design-,
marketing-, and/or manufacturing-related protective considerations, including product safety and
environmental measures typically found in end products that incorporate such semiconductor components or
circuit boards.
Olimex currently deals with a variety of customers for products, and therefore our arrangement with the user
is not exclusive. Olimex assumes no liability for applications assistance, customer product design, software
performance, or infringement of patents or services described herein.
THERE IS NO WARRANTY FOR THE DESIGN MATERIALS AND THE
COMPONENTS USED TO CREATE USB-uLiPo. THEY ARE CONSIDERED
SUITABLE ONLY FOR USB-uLiPo.
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OLIMEX© 014 USB-PWR user's manual
Table of Contents
DISCLAIMER ............................................................................................................. 2
CHAP ER 1: OVERVIEW ........................................................................................ 4
1. Int oduction to the chapte ....................................................................................................... 4
1.1 Featu es ..................................................................................................................................... 4
1.2 Ta get ma ket and pu pose of the boa d ............................................................................... 4
1.4 O ganization ............................................................................................................................. 4
CHAP ER 2: SE ING UP HE USB-PWR .......................................................... 6
2. Int oduction to the chapte ....................................................................................................... 6
2.1 Elect ostatic wa ning ............................................................................................................... 6
2.2 Requi ements ........................................................................................................................... 6
2.3 Powe ing the boa d .................................................................................................................. 7
2.4 Modes of ope ation .................................................................................................................. 7
2.5 Status LEDs desc iption .......................................................................................................... 7
CHAP ER 3: CONNEC ORS AND PINOU ........................................................ 8
3. Int oduction to the chapte ....................................................................................................... 8
3.1 Batte y connecto ..................................................................................................................... 8
3.2 Exte nal powe pads ................................................................................................................ 8
3.2 Jumpe desc iption .................................................................................................................. 8
3.2.1 470mA_E ......................................................................................................................................................... 8
CHAP ER 4: SCHEMA ICS .................................................................................... 9
4. Int oduction to the chapte ....................................................................................................... 9
4.1 Eagle schematic ........................................................................................................................ 9
4.2 Physical dimensions ............................................................................................................... 11
CHAP ER 5: REVISION HIS ORY AND SUPPOR ........................................ 12
5. Int oduction to the chapte ..................................................................................................... 12
5.1 Document evision ................................................................................................................. 12
5.2 Boa d evision ........................................................................................................................ 12
5.3 Useful web links and pu chase info ...................................................................................... 13
5.4 P oduct suppo t ..................................................................................................................... 14
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OLIMEX© 014 USB-uLiPo user's manual
CHAP ER 1: OVERVIEW
1. Introduction to the chapter
Thank you for choosing the USB-uLiPo from Olimex! This document provides a user’s guide for
the Olimex USB-uLiPo board. As an overview, this chapter gives the scope of this document and
lists the board’s features. The document’s organization is then detailed.
USB-uLiPo development board allows you to charge your lithium polymer batteries easily. It is also
suitable for powering small boards with 3.7V.
USB-uLiPo is an open-source, open-hardware project and all documentation is available to the
customer – you have the needed to make the board yourself.
1.1 Features
•Mini USB connector
•MCP73833 charger
•Mini USB connector
•JST .0 mm connector for our BATTERY-LIPO1400mAh
•Three status LEDs
•Selectable two charge currents 100/470mA
•Dimensions: ( 9 x 13) mm ~ (1.14 x 0.51)''
1.2 arget market and purpose of the board
The board is suitable for charging rechargeable lithium polymer (LiPo, LiPol) batteries. It is
powered via the standard mini USB and is capable of providing 470mA @ 3.7V output per hour.
The strong points of the boards are the small form factor, the high compatibility and the
convenience to use.
Customers have full access to the technical documentation of the board. The software is released
under General Purpose License and the schematic and board design (made with Eagle) are released
under Creative Commons Attribution-ShareAlike 3.0 Unported License. To view a copy of this
license, visit http://www.creativecommons.org/licenses/by-sa/3.0/.
1.4 Organization
Each section in this document covers a separate topic, organized as follow:
–Chapter 1 is an overview of the board usage and features
–Chapter provides a guide for quickly setting up the board and software notes
–Chapter 3 covers the connector pinout, peripherals and jumper description
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OLIMEX© 014 USB-uLiPo user's manual
–Chapter 4 provides the schematics
–Chapter 5 contains the revision history, useful links and support information
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OLIMEX© 014 USB-uLiPo user's manual
CHAP ER 2: SE ING UP HE USB-PWR
2. Introduction to the chapter
This section helps you set up the USB-uLiPo development board for the first time. Please consider
first the electrostatic warning to avoid damaging the board, then discover the hardware and software
required to operate the board.
The procedure to power up the board is given, and a description of the default board behavior is
detailed.
2.1 Electrostatic warning
USB-uLiPo is shipped in a protective anti-static package. The board must not be exposed to high
electrostatic potentials. A grounding strap or similar protective device should be worn when
handling the board. Avoid touching the component pins or any other metallic element.
2.2 Requirements
In order to set up the charger optimally, the following items are required:
- a LiPo battery or a board that can be powered by 3.7V
- a mini USB cable
Additional items include:
- jumper wires – might provide useful if using the pads instead of the JST battery connector
Some of the suggested items can be purchased by Olimex, for instance:
BATTERY-LIPO1400mAh – a rechargeable electronics battery with JST connector, the battery is
suitable for all Olimex boards with BAT connector (like OLIMEXINO-STM3 , PIC3 -PINGUINO,
OLIMEXINO-3 8, etc); there are also bigger battery variants of 3000mAh; 4000mAh and
6600mAh.
USB-MINI-CABLE – standard USB type A to USB type mini cable
JUMPER WIRES – in different lengths and different male-female variants
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OLIMEX© 014 USB-uLiPo user's manual
2.3 Powering the board
The installation is pretty straightforward – you plug a mini USB cable to a computer (or to other
power source in rare instances) and then to the USB-uLiPo. Then you connect the USB-uLiPo to a
battery via the JST connector or to a target board using the PCB pads (next to the JST connector,
marked as 1 and ).
Note that some cheap mini USB cables might have high inner capacity. Some others might be too
long (or having thick wires) leading again to inner resistiveness higher than optimal. Make sure the
mini USB cable you use meets the recommendations.
Another problem that might occur is a faulty USB computer port or, even worse, USB hub. Please
try another USB port and if possible another computer.
2.4 Modes of operation
The LiPo charger may work in either 470mA or 100mA mode. By default the SMT jumper is set in
470mA mode – this will charge a typical 1400mA battery in about 3 hours if the USB is capable of
providing 470mA. However, for some smaller batteries or weaker USB ports/hubs (unable to
provide 470mA) it might be a good idea to use 100mA mode. It would require basic soldering and
cutting skills to set the jumper to 100mA mode.
2.5 Status LEDs description
The LEDs have the following meaning and behavior:
Red LED on – means there is an active and properly working USB mini connection
Yellow LED on – means that the battery is currently charging (board is drawing power)
Green LED on – means that the battery is fully charged and overcurrent protection is on (connected
board does not draw power)
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OLIMEX© 014 USB-uLiPo user's manual
CHAP ER 3: CONNEC ORS AND PINOU
3. Introduction to the chapter
In this chapter jumpers functions are described. Notes and info on specific peripherals are
presented.
3.1 Battery connector
The battery connector is JST .0 mm. If your batteries use .54mm step there are a number of cheap
adapter-cables for .0 ↔ .54 available.
3.2 External power pads
There are a couple of pads provided near the JST .0mm battery connector which might be used to
power another board or PCB that can handle 3.7V.
3.2 Jumper description
Please note that the jumper on the board is SMT type and to configure it you would need basic
cutting/soldering skills. You have to cut the PCB solder between the pads with a cutter knife. If you
want to set it to default position you have to solder the pads together again.
3.2.1 470mA_E
This is a jumper that sets the output current. The bigger the current the faster the recharge of the
battery. By default 470mA_E is closed, meaning the target battery or board would receive 470mA
of current per hour.
If you decide to cut the jumper pads, the board will provide 100mA of current to the target
battery/board.
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OLIMEX© 014 USB-uLiPo user's manual
CHAP ER 4: SCHEMA ICS
4. Introduction to the chapter
In this chapter are located the schematics describing logically and physically USB-uLiPo.
4.1 Eagle schematic
OLinuXino schematic is visible only for reference here. You can view high resolution .pdf version
at https://www.olimex.com/Products/Power/USB-uLiPo/. It is located in HARDWARE section.
Note that the Eagle schematic and board files are also available at the mentioned section.
This hardware design by Olimex LTD is licensed under a Creative Commons Attribution-
ShareAlike 3.0 Unported License.
The latest EAGLE schematic is situated on the next page for quicker reference. If you are looking
for a schematic of an older revision of the board and it isn't available at our web site you may
request it by the support e-mail.
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OLIMEX© 014 USB-uLiPo user's manual
Page 10 of 14
100mA->10k
470mA->10k||2.7k
470mA_E
LED DESCRIPTION:
GREEN - COMPLETE
YELLOW - CHARGING
RED - POWER GOOD
T is ardware design by Olimex LTD is licensed under a Creative Commons Attribution-S areAlike 3.0 Unported License.
USB-uLiPo_rev_B, OLIMEX LTD, BULGARIA, ttps://www.olimex.com
close
1
2BAT
DW02R
C1
C2
GNDGNDGND GND GNDGND GND GND
GR
0603/GREEN
PCB
DW02R
R1
2.7k
R2
2.7k
R3
2.7k
R4
1.5k
R5
10k
R6
10k
R7
2.7k
RED
0603/RED
THERM
U1
MCP73833-AMI/UN
#PG(#TE)
7
PROG
6
STAT1
3
STAT2
4
THERM
8
VBAT 9
VBAT 10
VDD
1
VDD
2
VSS
5
D+
D-
GND
ID
VBUS
USB
USB-MINI
YL
0603/YELLOW