AS1337A-TD_EK_ST

AS1337– AN01- Demoboard Preliminary Application Note Application Note: AN01- Demoboard AS1337 200mA, DC-DC Step-Up Converter with Buck Mode www.austriamicrosystems.com Revision 1.0 / 2011/11/15 1-6 AS1337– AN01- Demoboard Table of Contents 1 FURTHER APPLICATIONS ................................................................................................................... 3 2 REVISION STATUS .............................................................................................................................. 3 3 GENERAL DESCRIPTION ..................................................................................................................... 3 4 GETTING STARTED ............................................................................................................................. 4 5 HW- OVERVIEW ................................................................................................................................... 4 5.1 5.2 5.3 AS1337 Demoboard jumper and device locations ....................................................................................... 4 AS1337 Demoboard 1V0 schematic ............................................................................................................. 4 AS1337 Demoboard 1V0 layout .................................................................................................................... 5 6 COPYRIGHT ........................................................................................................................................ 6 7 DISCLAIMER ....................................................................................................................................... 6 AS3610 www.austriamicrosystems.com Revision 1.0 / 2011/11/15 2-6 AS1337– AN01- Demoboard 1 Further Applications Visit our home-page: http: //www.austriamicrosystems.com 2 Revision status AS1337- AN01 - Demoboard AS1337 Demoboard – Layout AS1337 Demoboard – Schematic Rev.: 1V0 Rev.: 1V0 Rev.: 1V0 3 General Description Figure 1: Board Description - Connectors Figure 2: Board Description – Measurement Points Connector Description Label Name Description Info A B VIN GND Supply Voltage Ground Supply voltage ranging from 0.65V to 4.5V C EN Enable Input D E VOUT POK Output Voltage POK Set the digital input “high” for normal operation. For shutdown, set “low” Output voltage ranging from 2.5V to 5.0V high, when VOUT is within regulation Measurement Point Description Label Name Description Info F G H I J K L VIN GND LX VOUT EN FB POK Supply Voltage Ground External Inductor Output Voltage Enable Input Feedback POK Measurement Points ON: The AS1337 is enabled M EN OFF: The AS1337 is disabled Enable No Jumper: Connect a valid enable signal via external connector “C”. www.austriamicrosystems.com Revision 1.0 / 2011/11/15 3-6 AS1337– AN01- Demoboard 4 Getting Started The AS1337 Demoboard is designed to work with the AS1337A “Battery connected in shutdown” version. With the resistor divider R1/R2 it is possible to adjust the VOUT. On this Demoboard the following resistor values are mounted: R1 = 560k and R2 = 330k
VOUT = 3.3V 5 HW- Overview 5.1 AS1337 Demoboard jumper and device locations Listed below are the various connectors and jumpers. Ref. Function Value Description Manufacturer Mfg. Order Nr. C1s Input Capacitor 10µF C2s Output Capacitor 22µF 0805 / X5R / 6.3V Murata GRM219R60J106KE19 0805 / X5R / 6.3V Murata L1 Coil 4.7µH 50mΩ / 1.82A / 6.8x6.0x2.4mm Coilcraft GRM21BR60J226ME39 MOS6020-472ML R1 Resistor (VOUT) 560k 0805/ ±1% Multicomp MC 0.1W 0805 1% 560K R2 Resistor (VOUT) 330k 0805/ ±1% Multicomp MC 0.1W 0805 1% 330K R3 RPOK 100k 0805/ ±1% Multicomp MC 0.1W 0805 1% 100K U1 DC/DC Converter ASSE TQFN 3x3mm 8-pin austriamicrosystems AS1337A-BTDT 5.2 AS1337 Demoboard 1V0 schematic Application schematic www.austriamicrosystems.com Revision 1.0 / 2011/11/15 4-6 AS1337– AN01- Demoboard 5.3 AS1337 Demoboard 1V0 layout Layout (top view) Layout (bottom view) www.austriamicrosystems.com Revision 1.0 / 2011/11/15 5-6 AS1337– AN01- Demoboard 6 Copyright Copyright © 1997-2011, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, AustriaEurope. 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. 7 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 www.austriamicrosystems.com Revision 1.0 / 2011/11/15 6-6