austriamicrosystems AG
is now
ams AG
The technical content of this austriamicrosystems application note is still valid.
Contact information:
Headquarters:
ams AG
Tobelbaderstrasse 30
8141 Unterpremstaetten, Austria
Tel: +43 (0) 3136 500 0
e-Mail: ams_sales@ams.com
Please visit our website at www.ams.com
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
www.austriamicrosystems.com Revision 1.1 / 2010/07/27 1 - 11
Application Note: AN01 – Demoboard
AS3610
USB compliant Step down Charger for Portable Devices
1 General Description
The AS3610 is highly integrated standalone or optional I2C controlled step down charger.
All supervision and regulation functions are realized internal and independent from the processor.
In addition the Charger can generate a 5.05V output supply at VBUS for USB OTG.
2 Key Features
DCDC USB Charger
1.2A, 3MHz DCDC Charger
OTG Boost with low IQ (700uA) up to 500mA
Seamless 100% Mode
Reverse Polarity protection on VBUS
NTC support
Low side LED driver
No external shunt resistor required
No Battery operation without voltage drop.
Package MLPD14 3x3mm
3 Applications
- 1 Cell Li+ charger for mobile phones and portable
devices
ams AG
Technical content still valid
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
www.austriamicrosystems.com Revision 1.1 / 2010/07/27 2 - 11
Table of Contents
1 FURTHER APPLICATIONS ................................................................................................................... 3
2 REVISION STATUS .............................................................................................................................. 3
3 GENERAL DESCRIPTION .................................................................................................................... 3
4 GETTING STARTED ............................................................................................................................. 3
5 GUI –S W: FIRST STEPS ...................................................................................................................... 4
5.1 GUI – SW: overview ...................................................................................................................................... 4
5.2 SW vs. PCB: Get the board functional .......................................................................................................... 5
6 AS3610 DEMOBOARD 1V1 JUMPER AND DEVICE LOCATIONS ........................................................... 7
7 APPLICATION SCHEMATIC AS3610 DEMOBOARD 1V1 ....................................................................... 8
8 AS3610 DEMOBOARD 1V1: LAYOUT ................................................................................................... 9
9 COPYRIGHT ...................................................................................................................................... 11
10 DISCLAIMER ..................................................................................................................................... 11
AS3610
ams AG
Technical content still valid
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
www.austriamicrosystems.com Revision 1.1 / 2010/07/27 3 - 11
1 Further Applications
Visit our home-page: http: //www.austriamicrosystems.com
2 Revision status
AS3610 - AN01 - Demoboard Rev.: 1v1
AS3610 Demoboard – Layout Rev.: 1v1
AS3610 Demoboard – Schematic Rev.: 1v1
3 General description
Remark: all subsequent component numbering refers to the application schematics, shown in pt. Application
Schematic.
4 Getting Started
Install the GUI SW which can be found on the USB-BOX or CD-ROM which is included.
After that, follow the following sequence to connect the AS3610 Board: (also shown in the picture below)
1. Connect the an USB cable or alternative supply the board from a power supply (5V)
2. Connect the austriamicrosystems AG USB BOX at J1
3. connect a battery to VBAT and GND
A red LED (D2) on the Board immediately indicates a proper connection of the power supply.
( Picture shows AS3610 Demoboard 1V0 )
1
2
3
ams AG
Technical content still valid
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
www.austriamicrosystems.com Revision 1.1 / 2010/07/27 4 - 11
5 GUI –SW: First steps
If the USB Box and the Device is recognized the bars are shown in green
5.1 GUI – SW: overview
Overview which current can be selected
on the Demoboard
Function of Status pin:
0 always off
1 ch_det=ON
2 ch_det=ON, stop_charging or boost_error=5Hz blinking
3 Charging=ON, stop_charging or boost_error=5Hz blinking
4 Charging=ON, EOC=1Hz blinking, stop_charging or
boost_error=5Hz blinking
5 ch_det =ON, EOC=1Hz blinking, stop_charging or
boost_error=5Hz blinking
Shows the status of the Charger
Select the NTC of the battery:
10 or 100k
ams AG
Technical content still valid
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
www.austriamicrosystems.com Revision 1.1 / 2010/07/27 5 - 11
5.2 SW vs. PCB: Get the board functional
Connect Battery (~3.7V Lithium Ionen) to Vbat -> no Power Supply
Connect Power Supply (5V) to Vbus or USB cable measure current consumption
LED D2 is turning on, current limit about 100/500mA
Set Jumper on NTC (J8) LED D2 should be blinking, current consumption is 0mA
Disconnect NTC- Jumper and set Jumper USB 500 (J5) to “1” current consumption is a little bit under
500 mA, set the Jumper back of USB 500 to “0” to get 100mA.
XEN set per Jumper (J3) to “1” current consumtion = 0mA, set XEN back to “0”
Activate in the SW
- Then
in the Register of Charger Status now should be set: ChDet and it is depending on the battery voltage
CCM or Trickle or Const. Volt. Mode or EOC is shown.
Disconnect battery : CHDet & EOC are set
ams AG
Technical content still valid
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
www.austriamicrosystems.com Revision 1.1 / 2010/07/27 6 - 11
Remove the I-Term Jumper: ChDet & Const. Voltage mode are set
Re-connect Battery and Jumper
Disable in the SW the “ USB charger enable”
Disconnect VBUS
Activate the “ Boost Enable”
LED D2 is turned on! The Voltage on Vbus is ~5V.
ams AG
Technical content still valid
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
www.austriamicrosystems.com Revision 1.1 / 2010/07/27 7 - 11
6 AS3610 Demoboard 1V1 jumper and device locations
Listed below are the various connectors and jumpers.
Jumper
Function
comment
J1 I2C interface
J2 I2C-PWR Uses the power supply from the I2C box
J3 XEN Enable pin for step down charger
J4,J6,J7 ISET Sets the charging current
J9.J10,J11 ITERM Selects Trickle & EOC current
J5 USB 500
Set current limit in charger mode. 100mA/500mA USB current
limit
J8 NTC NTC input
J13 Stat. LED
Status output pin.
J14,J15,J1
6,J17
Connector for Adapterboard
J18,J19 Stand alone Fixed solution for the Stand alone mode
VBUS 5V supply
GND
VBAT Battery connector
Device Value
comment
U1
AS3610 USB complient Step down Charger for Portable Devices
U2 USB connector 5V supply for Vbus
Connector and Jumper locations of AS3610A Demoboard 1V1
ams AG
Technical content still valid
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
www.austriamicrosystems.com Revision 1.1 / 2010/07/27 8 - 11
7 Application Schematic AS3610 Demoboard 1V1
ams AG
Technical content still valid
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
www.austriamicrosystems.com Revision 1.1 / 2010/07/27 9 - 11
8 AS3610 Demoboard 1V1: Layout
TOP Layer
MID Layer (GND)
ams AG
Technical content still valid
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
www.austriamicrosystems.com Revision 1.1 / 2010/07/27 10 - 11
MID Layer (VBUS)
BOT Layer
ams AG
Technical content still valid
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
www.austriamicrosystems.com Revision 1.1 / 2010/07/27 11 - 11
9 Copyright
Copyright © 1997-2010, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-
Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted,
merged, translated, stored, or used without the prior written consent of the copyright owner.
All products and companies mentioned are trademarks or registered trademarks of their respective companies.
10 Disclaimer
Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions
appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by
description regarding the information set forth herein or regarding the freedom of the described devices from
patent infringement. Austriamicrosystems AG reserves the right to change specifications and prices at any time
and without notice. Therefore, prior to designing this product into a system, it is necessary to check with
austriamicrosystems AG for current information.
This product is intended for use in normal commercial applications. Applications requiring extended temperature
range, unusual environmental requirements, or high reliability applications, such as military, medical life-support
or lifesustaining equipment are specifically not recommended without additional processing by
austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might
show deviations from the standard production flow, such as test flow or test location.
The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However,
austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not
limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect,
special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing,
performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise
or flow out of austriamicrosystems AG rendering of technical or other services.
Contact Information
Headquarters
austriamicrosystems AG
Tobelbader Strasse 30
Schloss Premstaetten
A-8141 Unterpremstaetten, Austria
T. +43 (0) 3136 500 0
F. +43 (0) 3136 5692
For Sales Offices, Distributors and Representatives, please visit:
http://www.austriamicrosystems.com/contact
ams AG
Technical content still valid
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