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this is information on a product in full production. for further information contact your local stmicroelectronics sales office. april 2012 doc id 022736 rev 2 1/11 11 EVAL6470H fully integrated stepper motor driver mounting the l6470 data brief ? production data features voltage range from 8 v to 45 v phase current up to 3 a rms . spi with daisy-chain feature socket for external resonator or crystal sw input flag and busy led indicators adjustable supply voltage compensation suitable to be used in combination with steval-pcc009v2 description the EVAL6470H demonstration board is a fully integrated microstepping motor driver. in combination with the steval-pcc009v2 communication board and the dspin evaluation software, the board allows the user to investigate all the features of the l6470 device. in particular, the board can be used to check the voltage mode driving and to regulate the l6470 parameters in order to fit the application requirements. the EVAL6470H supports the daisy-chain configuration making it suitable for the evaluation of the l6470 in multi-motor applications. www.st.com
board description EVAL6470H 2/11 doc id 022736 rev 2 1 board description figure 1. jumpers and connectors location table 1. EVAL6470H specifications parameter value supply voltage (vs) 8 to 45 v maximum output current (each phase) 3 a r.m.s. logic supply voltage (vreg) externally supplied: 3.3 v, internally supplied: 3 v (typ.) logic interface voltage (vdd) externally supplied: 3.3 v or 5 v, internally supplied: vreg low level logic inputs voltage 0 v high level logic input voltage vdd (1) 1. all logic inputs are 5 v tolerant. operating temperature -25 to +125 c l6470h thermal resistance junction-to-ambient 21 c/w (typ.) phase a connector power supply connector (8 v - 45 v) master spi connector busy led (amber) flag led (red) motor supply voltege compensation partitioning regulation (adcin input) external switch connector (sw input) jp1: vdd supply from master spi connector jp2: vdd to vreg connection oscin/oscout connector jp3: daisy chain termination phase b connector slave spi connector application reference area am11 33 0v1
EVAL6470H board description doc id 022736 rev 2 3/11 table 2. jumpers and connectors description name type function j1 power supply motor supply voltage j5 power output bridge a outputs j6 power output bridge b outputs j2 spi connector master spi j3 spi connector slave spi j4 nm connector oscin and oscout pins j7 nm connector external switch input tp1 (vs) test point motor supply voltage test point tp4 (vdd) test point logic interface supply voltage test point tp5 (vreg) test point logic supply voltage/l6470 internal regulator test point tp6 (gnd) test point ground test point tp2 (stck) test point step clock input test point tp3 (stby/res) test point standby/reset input test point tp7 (flag) test point flag output test point tp8 (busy/sync) test point busy/sync output test point table 3. master spi connector pinout (j10) pin number type description 1 open drain output l6470 busy/sync output 2 open drain output l6470 flag output 3 ground ground 4 supply ext_vdd (can be used as external logic power supply) 5 digital output spi master-in slave-out signal (connected to l6470 sdo output through daisy-chain termination jumper jp2) 6 digital input spi serial clock signal (connected to l6470 ck input) 7 digital input spi master-out slave-in signal (connected to l6470 sdi input) 8 digital input spi slave select signal (connected to l6470 cs input) 9 digital input l6470 step-clock input 10 digital input l6470 stby/rst input table 4. slave spi connector pinout (j11) pin number type description 1 open drain output l6470 busy/sync output 2 open drain output l6470 flag output
board description EVAL6470H 4/11 doc id 022736 rev 2 3 ground ground 4 supply ext_vdd (can be used as external logic power supply) 5 digital output spi master-in slave-out signal (connected to pin 5 of j10) 6 digital input spi serial clock signal (connected to l6470 ck input) 7 digital input spi master-out slave-in signal (connected to l6470 sdo output) 8 digital input spi slave select signal (connected to l6470 cs input) 9 digital input l6470 step-clock input 10 digital input l6470 stby/rst input table 4. slave spi connector pinout (j11) (continued) pin number type description
EVAL6470H board description doc id 022736 rev 2 5/11 figure 2. EVAL6470H - schematic ! ! 37 " " /3#). /3#/54 !pplicationreference '.$ /04)/. 4 5 / ? ) 0 3 . ) ? ) 0 3 63 3 % 2 9 " 4 3 + # 4 3 ' % 2 6 $ $ 6 9 3 5 " ' ! , & '.$ 37 -)3/ 3$) #+ n#3 &,!' "539 34#+ 34"9?2%3%4 -)3/ 3$/ #+ n#3 &,!' "539 3$/ -)3/ "539 3$) #+ n#3 37 !$#). 3$/ "539 &,!' &,!' 34"9?2%3%4 34"9?2%3%4 34#+ 34#+ 63 63 %84?6$$ %84?6$$ %84?6$$ 6$$ 62%' 62%' 6$$ 62%' 6$$ 63 6$$ 6$$ 6$$ 63 63 * .- * 40 * * # p&6 # n&6 $, ,%$!-"%2 *0 $ "!6 # n&6 40 40 # p&6 2 # n&6 # n&6 $, ,%$2%$ 2 # n&6 # u&6 # n&6 40 2 + #! u&6 2 2 k 2 k # u&6 # n&6 40 * 40 $ ":8 "6 # n&6 5 , 6$$ 62%' /3#). /3#/54 #0 6"//4 !$#). 63! 63! 63" 63" 0'.$ 0'.$ /54! /54! /54" /54" !'.$ 37 $'.$ "539?39.# &,!' 3$/ 3$) #+ #3 34"9?2%3 34#+ %0! $ * 40 2 k # n&6 # n&6 40 *0 # p&6 2 k * .- 2 k *0 # u&6 !-v
board description EVAL6470H 6/11 doc id 022736 rev 2 table 5. EVAL6470H - bill of material item quantity reference value package 1 1 c1 220 nf/16 v capc-0603 2 2 c2,c4 100 nf/6.3 v capc-0603 3 1 c3 10 f/6.3 v capc-3216 4 1 c5 47 f/6.3 v capc-3216 5 1 c6 10 nf/50 v capc-0603 6 4 c7,c8,c15,c16 100 nf/50 v capc-0603 7 1 c9a 100 f/63 v cape-r8h12-p35 8 1 c9 100 f/63 v capes-r10hxx 9 3 c10,c11,c12 100 pf/6.3 v capc-0603 10 1 c13 3.3 nf/6.3 v capc-0603 11 1 c14 10 nf/6.3 v capc-0603 12 1 dl1 led diode (red) ledc-0805 13 1 dl2 led diode (amber) ledc-0805 14 1 d1 bav99 sot23 15 1 d2 bzx585-b3v6(1) sod523 16 1 jp1 jumper - open jp2so 17 2 jp2,jp3 jumper - closed jp2so 18 3 j1,j5,j6 screw connector 2 poles morsv-508-2p 19 2 j2,j3 pol. idc male header vertical 10 poles con-flat-5x2-180m 20 2 j4,j7 n.m. strip254p-m-2 21 1 r1 31.6 k ? resc-0603 22 1 r2 200 k ? trimm-100x50x110- 64w 23 1 r3 8.2 k ? resc-0603 24 3 r4,r5,r6 39 k ? resc-0603 25 2 r7,r9 470 ? resc-0603 26 1 r8 100 ? resc-0603 27 8 tp1, tp2, tp3, tp4, tp5, tp6, tp7, tp8 te s t p o i n t t h 28 1 u1 l6470h htssop28
EVAL6470H board description doc id 022736 rev 2 7/11 figure 3. EVAL6470H - layout (silk screen) figure 4. EVAL6470H - layout (top layer) !-v !-v
board description EVAL6470H 8/11 doc id 022736 rev 2 figure 5. EVAL6470H - layout (inner layer 2) figure 6. EVAL6470H - layout (inner layer 3) !-v !-v
EVAL6470H board description doc id 022736 rev 2 9/11 figure 7. EVAL6470H - layout (bottom layer) 1.1 thermal data figure 8. thermal impedance graph !-v 20 25 15 10 5 0 110 100 1000 time( s econd s ) zth(c/w) zth am11 33 9v1
revision history EVAL6470H 10/11 doc id 022736 rev 2 2 revision history table 6. document revision history date revision changes 25-jan-2012 1 initial release. 23-apr-2012 2 updated information: ta bl e 2 for connector tp3 (stby/res). ta bl e 3 , and ta bl e 4 description changed for pin 1and pin10 ta bl e 5 for item15. updated: figure 2 , figure 3 , figure 4 , figure 5 , figure 6 , and figure 7 .
EVAL6470H doc id 022736 rev 2 11/11 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 he rein 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 as sumes 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. i f 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 whatsoev er of such third party products or services or any intellectual property contained 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 two authorized st representatives, 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 whatsoev er, any liability of st. st and the st logo are trademarks or register ed 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. ? 2012 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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