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: [email protected]
Please visit our website at
www.ams.com
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
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
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OTG Boost with low IQ (700uA) up to 500mA
Seamless 100% Mode
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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
ams
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1 Cell Li+ charger for mobile phones and portable devices
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Technical
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AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
Table of Contents
1 FURTHER APPLICATIONS ................................................................................................................... 3
2 REVISION STATUS .............................................................................................................................. 3
3 GENERAL DESCRIPTION .................................................................................................................... 3
4 GETTING STARTED ............................................................................................................................. 3
5 GUI –SW: FIRST STEPS ...................................................................................................................... 4
5.1
GUI – SW: overview ...................................................................................................................................... 4
5.2
SW vs. PCB: Get the board functional .......................................................................................................... 5
7
10
6 AS3610 DEMOBOARD 1V1 JUMPER AND DEVICE LOCATIONS ........................................................... 7
APPLICATION SCHEMATIC AS3610 DEMOBOARD 1V1 ....................................................................... 8
8 AS3610 DEMOBOARD 1V1: LAYOUT ................................................................................................... 9
9 COPYRIGHT ...................................................................................................................................... 11
DISCLAIMER ..................................................................................................................................... 11 valid
AS3610
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Technical
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AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
1 Further Applications
Visit our home-page: http: //www.austriamicrosystems.com
2 Revision status
AS3610 - AN01 - Demoboard
AS3610 Demoboard – Layout
AS3610 Demoboard – Schematic
Rev.: 1v1
Rev.: 1v1
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.
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1 ams
3
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AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
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
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Select the NTC of the battery:
10 or 100k
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Shows the status of the Charger
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
Overview which current can be selected on the Demoboard
Technical
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 www.austriamicrosystems.com Revision 1.1 / 2010/07/27 4 - 11
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
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
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- Then
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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
Technical
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AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
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”
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LED D2 is turned on! The Voltage on Vbus is ~5V.
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AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
6 AS3610 Demoboard 1V1 jumper and device locations
Listed below are the various connectors and jumpers.
Jumper Function
J1
J2
J3
I2C interface
I2C-PWR
XEN
J4,J6,J7 ISET comment
Uses the power supply from the I2C box
Enable pin for step down charger
Sets the charging current
J9.J10,J11 ITERM
J5 USB 500
J8
J13
J14,J15,J1
6,J17
J18,J19
VBUS
GND
VBAT
Device
U1
U2
NTC
Stat. LED
Stand alone
AS3610
Value
USB connector
Selects Trickle & EOC current
Set current limit in charger mode. 100mA/500mA USB current limit
NTC input
Status output pin.
Connector for Adapterboard
Fixed solution for the Stand alone mode
5V supply
Battery connector comment
USB complient Step down Charger for Portable Devices
5V supply for Vbus
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AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
7 Application Schematic AS3610 Demoboard 1V1
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Technical
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AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
8 AS3610 Demoboard 1V1: Layout
TOP Layer
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Technical
MID Layer (GND) www.austriamicrosystems.com Revision 1.1 / 2010/07/27 9 - 11
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
still valid
Technical
BOT Layer www.austriamicrosystems.com Revision 1.1 / 2010/07/27 10 - 11
AS3610 – AN01 - Demoboard
USB complient Step down Charger for Portable Devices
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
AG
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,
valid
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.
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Contact Information
Headquarters austriamicrosystems AG
Tobelbader Strasse 30
Schloss Premstaetten
A-8141 Unterpremstaetten, Austria
T. +43 (0) 3136 500 0
Technical
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