ST STEVAL-ISA052V2 Evaluation board for the PM6675AS high efficiency step-down controller with embedded 2 A LDO regulator handbook
Contents
1. Gd STEVAL ISA052V2 Evaluation board for the PM6675AS high efficiency step down controller with embedded 2 A LDO regulator Features 4 5 V to 36 V input voltage range 0 6 V 1 voltage reference 1 5 V fixed output voltage 0 6 V to 3 3 V adjustable output voltage 1 237 V 1 reference voltage available Very fast load transient response using constant on time COT control loop No RSENSE current sensing using Rps on of the low side MOSFETs Negative current limit Latched OVP UVP and thermal shutdown Fixed 3 ms soft start Selectable pulse skipping at light load Selectable no audible 33 kHz pulse skip mode m Al ceramic output capacitors application supported m Output voltage ripple compensation m Output soft end Description This evaluation board is based on the PM6675AS device which consists of a single high efficiency step down controller and an independent low dropout LDO linear regulator The constant on time COT architecture assures fast transient response supporting both electrolytic and ceramic output capacitors An embedded integrator control loop compensates the DC voltage error due to the output ripple Selectable low consumption mode allows the highest efficiency over a wide range of load conditions The low noise mode sets the minimum switching frequency to 33 kHz for audio sensitive applications The LDO linear regulator can sink May 2008 Rev 1 Data Brief STEVAL I2. if is g l e sr Lan reen XZ Nod ON91 Di Im Nn ANII IA 2 4 STEVAL ISA052V2 Revision history 2 Revision history Table 1 Document revision history Date Revision Changes 05 May 2008 1 Initial release 3 4 STEVAL ISA052V2 Please Read Carefully 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 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 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 con
3. SA052V2 and source up to 2 Apk Two fixed current limits 1 A and 2 A can be chosen An active soft end is independently performed on both the switching and the linear regulator outputs when disabled 1 4 For further information contact your local STMicroelectronics sales office www st com STEVAL ISA052V2 Ic t schemati ircui Cc IC t schemati ircui C Schematic diagram Figure 1 DAS ONDA ALNOA NIA 0 WN 3 o YSAMLNI dogo 910 ait om sar k er nm o H ur T bo NIMS NJI kalesa WIN ASON ll er yoo CO DU C aano la ims lalo ede aro Lar mor z T le mm og ho u nz T we slo e CL X0 Hy p IDA She S eit a TIEHNZLS Elan i Lay amp za fe ob oly EY g D m D i EN CH Jr Di la KE Oo Ce et e ed L KE WI via EA kn 20 9 oo oa o 99h L L L L nor Ki T pa T EI XZ AAA 19 99 zr no 17 T p W106 092 91W a Lr i TIEHNZLS A z T cue vu wo 219 or Be Us kn 10 ve n T ow no P N no rie gt 19 vo ta E B mo e we 18 L H
4. pective owners 2008 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 2 4 4
5. tained therein 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 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 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 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 res
Download Pdf Manuals
Related Search
ST STEVAL ISA052V2 Evaluation board for the PM6675AS high efficiency step down controller with embed