data brief for further information contact your local stmicroelectronics sales office. may 2009 doc id 12521 rev 2 1/9 9 l9375 eight channel valve driver features octal low-side output drivers with protection diagnostic ? 4 x 3a, 160 m typ. ? 4 x 3a, 200 m typ. programmable channel timer clock monitor 4 channels with integrated recirculation diodes 4 channels with 40 v clamp for fast free wheeling of inductive loads. serial peripheral interface with 16 bits, up to 5 mhz with diagnosis battery compatible supply voltage detailed load diagnosis ? over load protection ? open load ? undercurrent ? undervoltage ? temperature warning and shutdown ? power or signal gnd loss ? freewheeling diode loss description the l9375 s a eight channel low side driver with integrated recirculation diodes for pwm controlled channels 5 to 8. the switching of the channels is programmable via a spi (serial peripheral interface). the main time base is given by an external clock via clkin. the clock unit monitors this external clock and provides the system clock for all timings. a synchronization unit is used to monitor the spi communication and provide a sync signal for the channel activation. the output duty cycle for each pwm controlled channel can be programme d individually and will be activated by the set point unit. is possible to program two output duty cycles per channel with a block of 16 spi commands as well as an individual duration time for each channel actuation. both information are stored in the pwm and in the counter configuration register respectively. the pwm controller translates the programmed digital duty cycle value in a pwm signal which controls the output. the channels 1 to 4 are configured as switching channels. to achieve a fast switch off a high voltage output clamp is implemented for a rapid free-wheeling if the induct ive load. the switch on time can be programmed via spi. all channels are equipped with a load diagnostic. this allows to detect an open load in off condition as well as a under current in on condition. the power stage is protected against over current and over temperature. a weak connection in power ground, in the recirculation path or in the external clock is monitored and leads to a switch off of the power stages in case an error occurs. all monitored functions can be read out in a serial diagnostic protocol dedicated for each channel via spi. table 1. device summary part number package packing L9375LF powerso-36 (slug down) tube powerso-36 www.st.com
block diagram l9375 2/9 doc id 12521 rev 2 1 block diagram figure 1. block diagram ac00165 under current open load pwm controller clkin vbatt vs q1 sgnd spiclk mosi miso spics safety switch reverse polarity protection pwm controlled valve ignition switch channel 4 (no free wheeling diode) channel 5 channel 6 channel 7 channel 8 q2 q3 q4 q5 q6 q7 q8 pwm controlled valve pwm controlled valve pwm controlled valve channel 3 (no free wheeling diode) channel 2 (no free wheeling diode) channel 1 (no free wheeling diode) switched valve switched valve switched valve switched valve d7 d5 d8/6 - spi supply voltage set point unit synchronization unit clock unit signal / power gnd loss power-on reset (a) = pgnd2/6/1/5 (b) = pgnd4/8/3/7 (a) (b) (a) (b) (a) (b) (a) (b) en pwm configuration register count configuration register communication configure register diagnose register clk/sync/spi/test modi / standard error detection
l9375 pins description doc id 12521 rev 2 3/9 2 pins description figure 2. pins connection (top view) table 2. pins description pin no. name description 1 nc not connected. 2 q1 output. 3 q1 output. 4 q2 output. 5 q2 output. 6 q6 output. 7 q6 output. 8 nc not connected. 9 d8/d66 free wheeling diode. 10 d8/d66 free wheeling diode. 11 nc not connected. 12 q8 output. 13 q8 output. nc q1 q1 q2 q8 q4 q4 q3 q3 q7 q7 d7 vs d7 d5 q5 q5 pgnd 18 16 17 15 6 5 4 3 2 21 22 31 32 33 35 34 36 20 1 19 nc pgn d06at547 d8/d6 q8 nc clkin mosi spiclk 9 8 7 28 29 30 d8/d6 miso 10 27 q2 nc q6 spics d5 en 14 12 11 23 25 26 q6 sgnd 13 24
pins description l9375 4/9 doc id 12521 rev 2 14 q4 output. 15 q4 output. 16 q3 output. 17 q3 output. 18 nc not connected. 19 pgnd power ground. 20 q7 output. 21 q7 output. 22 d7 output. 23 d7 output. 24 vs supply pin 25 clkin input for precise clock. 26 spiclk spi communication clock. 27 mosi input master out slave input for spi communication. 28 miso master in slave out out for spi communication. 29 spics spi chip select. 30 en enable 31 sgnd signal ground. 32 d5 free wheeling diode. 33 d5 free wheeling diode. 34 q5 output. 35 q5 output. 36 pgnd power ground. table 2. pins description (continued) pin no. name description
l9375 absolute maximum ratings doc id 12521 rev 2 5/9 3 absolute maximum ratings 3.1 voltage ratings warning: transients beyond this li mit will cause currents into esd structures which must be limited externally to 10 ma (maximum energy to be dissipated: 2 mj). 3.2 current ratings definition: current from outside towards the l9375 -> " + " current from l9375 towards ext. components -> " - " table 3. voltage ratings symbol parameter min max unit v s supply voltage -0.3 38 v v dx freewheeling diode voltage -0.3 35 v v qx output voltage -0.3 35 v v en v spiclk v spics v mosi v miso v clkin enable voltage spi clock voltage spi chip select voltage spi mosi voltage spi miso voltage spi clock input voltage -0.3 6 v table 4. current ratings symbol parameter min max unit i q output current at re versal voltage - -2 a i en_cl i spiclk_cl i spics_cl i mosi_cl i clkin_cl input clamping currents (static) input clamping currents (dynamic) - 3 -10 + 3 +10 ma
absolute maximum ratings l9375 6/9 doc id 12521 rev 2 3.3 esd susceptibility 3.3.1 hbm esd susceptibility hbm accord ing to eia/jesd 22-a 114b 3.3.2 mm esd susceptibility accord ing to eia/jesd22-a115-a table 5. hbm symbol parameter condition min max unit v qhbm output pins d x ; q x ; pgnd12, pgnd3, pgnd4, lgnd and gnd are connected together. 4 - kv v lhbm logic pins all pins 2 - kv table 6. mm symbol parameter condition min max unit v mm machine model (mm) all pins 250 - v
l9375 package information doc id 12521 rev 2 7/9 4 package information in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. figure 3. powerso-36 (slug down) mechanical data and package dimensions outline and mechanical data dim. mm inch min. typ. max. min. typ. max. a 3.60 0.1417 a1 0.10 0.30 0.0039 0.0118 a2 3.30 0.1299 a3 0 0.10 0.0039 b 0.22 0.38 0.0087 0.0150 c 0.23 0.32 0.0091 0.0126 d 15.80 16.00 0.6220 0.6299 d1 9.40 9.80 0.3701 0.3858 e 13.90 14.5 0.5472 0.5709 e1 10.90 11.10 0.4291 0.4370 e2 2.90 0.1142 e3 5.80 6.20 0.2283 0.2441 e 0.65 0.0256 e3 11.05 0.4350 g 0 0.10 0.0039 h 15.50 15.90 0.6102 0.6260 h 1.10 0.0433 l 0.8 1.10 0.0315 0.0433 n 10? (max) s 8? (max) note: ?d and e1? do not include mold flash or protusions. - mold flash or protusions shall not exceed 0.15mm (0.006?) - critical dimensions are "a3", "e" and "g". powerso-36 0096119 c
revision history l9375 8/9 doc id 12521 rev 2 5 revision history table 7. document revision history date revision changes 05-jun-2007 1 initial release. 19-may-2009 2 updated table 1: device summary on page 1 . updated section 4: package information on page 7 .
l9375 doc id 12521 rev 2 9/9 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 parti cular 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 milita ry, 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 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 - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com
|
