STEVAL-ISA059V1

STEVAL-ISA059V1 DC-DC converter demonstration board based on the TSM108 Data Brief Features ■ Input voltage: Vin = 12 V ■ Output voltage: Vout = 6 V ■ Maximum output current: Iout = 800 mA ) s t( c u d Description The typical application implemented in this demonstration board, based on the TSM108, is a battery charger. The device is a step down controller that features constant voltage and constant current regulation and can drive either a p-channel MOSFET or a PNP bipolar transistor. e t le o s b This demonstration board was designed to allow different converter configurations. Several options for power semiconductor footprints are available on the PCB in order to make it adaptable to a wide range of converter output power. ) s ( ct -O o r P STEVAL-ISA059V1 The TSM108 is especially suited for cigarette lighter accessories. u d o r P e t e l o s b O March 2009 Rev 1 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4 Vin C5 C4 2/4 R4 R2 C16 C17 C13 5 OV 4 UV C1 2 !STBY GND 3 OSC 7 6 G TSM108 TS 14 GD Q4-B D1 L1 R11 Q4-A VS 13 VREF 10 VCOMP 8 ICOMP 9 VCTRL 11 ICTRL 12 C3 C6 o s b C7 R6 R7 C10 C2 e t le C11 U1 C8 Q3 Q1 O ) 1 VCC C9 R14 R13 u d o R3 s ( t c R1 s b O t e l o L r P e R22 R12 R8 c u d o r P R20 R23 R21 R16 R17 R18 R19 R10 R9 VRES ES1 C14 C15 out Vou Figure 1. C12 Q2 1 R15 Circuit schematic STEVAL-ISA059V1 Circuit schematic Schematic ) s t( STEVAL-ISA059V1 2 Revision history Revision history Table 1. Document revision history Date Revision 06-Mar-2009 1 Changes Initial release. ) s t( c u d e t le o r P o s b O ) s ( t c u d o r P e t e l o s b O 3/4 STEVAL-ISA059V1 ) s t( Please Read Carefully: c u d Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. o r P Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. e t le No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. o s b O ) UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. s ( t c u d o UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK. r P e t e l o Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. s b O ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2009 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 4/4