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this is preliminary information on a new product foreseen to be developed. details are subject to change without notice. september 2013 docid025102 rev 2 1/18 VNH5250AS-E automotive fully integrated h-bridge motor driver datasheet - target specification features ? output current: 8 a ? 3 v cmos-compatible inputs ? undervoltage shutdown ? overvoltage clamp ? thermal shutdown ? cross-conduction protection ? current and power limitation ? very low standby power consumption ? protection against loss of ground and loss of v cc ? current sense output proportional to motor current ? output protected against short to ground and short to v cc ? package: ecopack ? description the VNH5250AS-E is a full bridge motor driver intended for a wide range of automotive applications. the device incorporates a dual monolithic high-side driver and two low-side switches. both switches are designed using stmicroelectronics? well known and proven proprietary vipower ? m0 technology that allows to efficiently integrate on the same die a true power mosfet with an intelligent signal/protection circuitry. the three dies are assembled in so-16n package on electrically isolated leadframes. this package, specifically designed for the harsh automotive environment offers improved thermal performance thanks to exposed die pads. moreover, its fully symmetrical mechanical design allows superior manufacturability at board level. the input signals in a and in b can directly interface to the microcontroller to select the motor direction and the brake condition. the diag a /en a or diag b /en b , when connected to an external pull- up resistor, enables one leg of the bridge. each diag a /en a provides a feedback digital diagnostic signal as well. the normal operating condition is explained in the truth table. the cs pin allows to monitor the motor current by delivering a current proportional to its value. type r ds(on) i out v ccmax VNH5250AS-E 250 m typ ( per leg) 8a 41v so-16n gapgcft00648 table 1. device summary package order codes tube tape and reel so-16n VNH5250AS-E vnh5250astr-e www.st.com
contents VNH5250AS-E 2/18 docid025102 rev 2 contents 1 block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.2 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.3 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3 package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.1 ecopack ? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.2 so-16n mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
docid025102 rev 2 3/18 VNH5250AS-E list of tables 3 list of tables table 1. device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 table 2. block description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 table 3. pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 table 4. pin functions description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 table 5. absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 table 6. thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 table 7. power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 table 8. logic inputs (ina, inb, ena, enb, pwm, cs_dis). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 table 9. switching (vcc = 13 v, rload = 6.5 w) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 table 10. protections and diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 table 11. current sense (9 v < vcc < 18 v) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 table 12. truth table in normal operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 table 13. truth table in fault conditions (detected on outa). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 table 14. electrical transient requirements (part 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 table 15. electrical transient requirements (part 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 table 16. electrical transient requirements (part 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 table 17. so-16n mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 table 18. document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
list of figures VNH5250AS-E 4/18 docid025102 rev 2 list of figures figure 1. block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 figure 2. configuration diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 figure 3. current and voltage conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 figure 4. definition of the high-side switching times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 figure 5. so-16n package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
docid025102 rev 2 5/18 VNH5250AS-E block diagram and pin description 17 1 block diagram and pin description figure 1. block diagram table 2. block description name description logic control allows the turn-on and the turn-off of the high-side and the low-side switches according to the truth table. undervoltage shuts down the device for battery voltage lower than 5 v. high-side and low-side clamp voltage protect the high-side and the low-side switches from the high voltage on the battery line. high-side and low-side driver drive the gate of the concerned switch to allow a proper r ds(on) for the leg of the bridge. current limitation limits the motor current in case of short circuit. high-side and low-side overtemperature protection in case of short-circuit with the increase of the junction temperature, it shuts down the concerned driver to prevent degradation and to protect the die. low-side overload detector detects when low-side current exceeds shutdown current and latches off the concerned low-side. logic v cc out a diag a / en a in b in a gnd a cs diag b / en b ls a clamp hs a ls a hs a hsa_overtemperature hsb_overtemperature u v current limitation a out b gnd b ls b hs b current driver hs a driver ls b driver hs b driver clamp hs b clamp ls b clamp ls a 1/k 1/k limitation b overload detector b overload detector a power limitation fault detection lsb_overtemperature lsa_overtemperature gapgcft00647
block diagram and pin description VNH5250AS-E 6/18 docid025102 rev 2 figure 2. configuration diagram (top view) fault detection signalizes the abnormal behavior of the switch (output shorted to ground or output shorted to battery) by pulling down the concerned enx/diagx pin. power limitation limits the power dissipation of the high-side driver inside safe range in case of short to ground condition. table 3. pin definitions and functions pin n symbol function 1, 16 gnd a source of low-side switch a 2, 15 out a source of high-side switch a / drain of low-side switch a 3in a clockwise input 4, 5, 12 v cc power supply voltage 6in b counter clockwise input 7, 10 out b source of high-side switch b / drain of low-side switch b 8, 9 gnd b source of low-side switch b 11 en b status of high-side and low-side switches b 13 cs output of current sense 14 en a status of high-side and low-side switches a table 4. pin functions description name description v cc battery connection. gnd power ground. out a out b power connections to the motor. table 2. block description (continued) name description 6 2 1 *1' $ 287 $ ,1$ 9 && 9 && ,1 % 287 % *1' % *1' $ 287 $ (1$ &6 9 && (1 % 287 % *1' % *$3*&)7
docid025102 rev 2 7/18 VNH5250AS-E block diagram and pin description 17 in a in b voltage controlled input pins with hysteresis, cmos-compatible. these two pins control the state of the bridge in normal operation according to the truth table (brake to v cc , brake to gnd, clockwise and counterclockwise). en a /diag a en b /diag b open drain bidirectional logic pins.these pins must be connected to an external pull up resistor. when externally pulled low, they disable half-bridge a or b. in case of fault detection (thermal shutdown of a high-side fet or excessive on-state voltage drop across a low-side fet), these pins are pulled low by the device (see table 13: truth table in fault conditions (detected on outa) ). cs analog current sense output. this output delivers a current proportional to the motor current. the information can be read back as an analog voltage across an external resistor. table 4. pin functions description (continued) name description
electrical specifications VNH5250AS-E 8/18 docid025102 rev 2 2 electrical specifications figure 3. current and voltage conventions 2.1 absolute maximum ratings stressing the device above the rating listed in ta ble 5 may cause permanent damage to the device. these are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. v cc in a i s i outa i ina v ina v cc v outa i sense v outb diag a /en a i ena i gnd i outb in b i inb diag b /en b i enb v enb v ena v inb v sense out a out b cs gnd table 5. absolute maximum ratings symbol parameter value unit v cc supply voltage + 40 v i max maximum output current (continuous) internally limited a i r reverse output current (continuous) -15 a i in input current (in a and in b pins) +/- 10 ma i en enable input current (diag a /en a and diag b /en b pins) +/- 10 ma v cs current sense maximum voltage v cc -40/+v cc v v esd electrostatic discharge (human body model: r=1.5 k , c=100 pf) 2kv t c junction operating temperature -40 to 150 c t stg storage temperature -55 to 150 c i gnd dc reverse ground pin current 200 ma
docid025102 rev 2 9/18 VNH5250AS-E electrical specifications 17 2.2 thermal data 2.3 electrical characteristics values specified in this section are for v cc = 9 v up to 18 v; -40c < t j < 150c, unless otherwise specified. table 6. thermal data symbol parameter max. value unit r thj-case thermal resistance junction-case (per leg) tbd c/w r thj-amb thermal resistance junction-ambient tbd c/w table 7. power section symbol parameter test conditions min. typ. max. unit v cc operating supply voltage 5.5 18 v i s supply current off-state with all fault cleared and enx = 0 (standby) in a =in b =0; t j = 25c; v cc =13v 36a off-state with all fault cleared and enx = 0 (standby) in a =in b =0; v cc =13v; t j = -40c to 150c 10 a off-state (no standby) in a =in b = 0; enx = 5 v; t j = -40c to 150c 5ma on-state: in a or in b =5v 3 6 ma r onhs static high-side resistance i out = 2 a; t j =-40c m i out = 2 a; t j =25c 125 m i out = 2 a; t j = 150c m i out = 2 a; t j =-40 to 150c 250 m r onls static low-side resistance i out = 2a; t j =25c 125 m i out = 2a; t j = -40c to 150c 250 m v f high-side free-wheeling diode forward voltage i out =-2a; t j = 150c 0.7 0.9 v i l(off) high-side off-state output current (per channel) t j =25c; v outx =en x =0v; v cc =13v 03a t j = 125c; v outx =en x =0v; v cc =13v 05a i rm dynamic cross- conduction current i out = 2.5 a 0.6 a
electrical specifications VNH5250AS-E 10/18 docid025102 rev 2 table 8. logic inputs (in a , in b , en a , en b , pwm, cs_dis) symbol parameter test conditions min. typ. max. unit v il input low level voltage normal operation (diag x /en x pin acts as an input pin) 0.9 v v ih input high level voltage normal operation (diag x /en x pin acts as an input pin) 2.1 v v ihyst input hysteresis voltage normal operation (diag x /en x pin acts as an input pin) 0.15 v v icl input clamp voltage i in = 1 ma 5.5 6.3 7.5 v i in =-1ma -1.0-0.7-0.3 v i inl input current v in =0.9v 1 a i inh input current v in =2.1v 10 a v diag enable output low level voltage fault operation (diag x /en x pin acts as an output pin); i en =1ma 0.4 v table 9. switching (v cc =13v, r load =6.5 ) symbol parameter test conditions min. typ. max. unit t d(on) turn-on delay time input rise time < 1s (see figure 4 ) 50 s t d(off) turn-off delay time input rise time < 1s (see figure 4 ) 120 s t r rise time 1 s t f fall time 40 s t del delay time during change of operating mode 200 400 1600 s t rr high-side free wheeling diode reverse recovery time 400 ns
docid025102 rev 2 11/18 VNH5250AS-E electrical specifications 17 table 10. protections and diagnostics symbol parameter test conditions min. typ. max. unit v usd undervoltage shutdown 3 5 v v usdhyst undervoltage shutdown hysteresis 0.5 v i lim_h high-side current limitation 8 12 16 a i sd_ls shutdown ls current 8 15 20 a v clph high-side clamp voltage (v cc to out a =0 or out b =0) i out = 2 a 41 46 52 v v clpls low-side clamp voltage (out a =v cc or out b = v cc to gnd) i out =2a 41 46 52 v t tsd thermal shutdown temperature v in = 2.1 v 150 175 200 c t tr thermal reset temperature 135 c t hyst thermal hysteresis (t sd -t r )7c t tsd_ls low-side thermal shutdown temperature v in = 2.1 v 150 175 200 c v clp total clamp voltage (v cc to gnd) i out =2a 41 46 52 v t sd_ls time to shutdown for the low-side 10 s table 11. current sense (9 v < v cc <18v) symbol parameter test conditions min. typ. max. unit k 0 i out /i sense i out = 0.075 a; v sense = 0.5 v; t j = -40c to 150c -38 38 % k 1 i out /i sense i out =0.25a; v sense = 0.5 v; t j = -40c to 150c -27 27 % k 2 i out /i sense i out = 2 a; v sense = 1 v; t j = -40c to 150c -8 8 % k 3 i out /i sense i out = 8 a; v sense = 4 v; t j = -40c to 150c -6 6 % dk 0 /k 0 (1) analog sense current drift i out = 0.075 a; v sense = 0.5 v; t j = -40c to 150c -18 18 % dk 1 /k 1 (1) analog sense current drift i out =0.25a; v sense = 0.5 v; t j = -40c to 150c -12 12 % dk 2 /k 2 (1) analog sense current drift i out = 2 a; v sense = 1 v; t j = -40c to 150c -8 8 % dk 3 /k 3 (1) analog sense current drift i out = 8 a; v sense = 4 v; t j = -40c to 150c -5 5 % v sense max analog sense output voltage i out = 2 a; r sense =2k 5v
electrical specifications VNH5250AS-E 12/18 docid025102 rev 2 figure 4. definition of the high-side switching times i sense0 analog sense leakage current i out = 0 a; v sense =0v; v in =0v; t j = -40c to 150c 05a v in =5v; t j = -40c to . 150c 0 a v in =5v; i out =2.5a; t j = -40c to . 150c 05a 1. analog sense current drift is deviation of factor k for a given device over (-40 c to 150 c and 9v < v cc < 18 v) with respect to its value measured at t j = 25 c, v cc = 13 v. table 11. current sense (9 v < v cc < 18 v) (continued) symbol parameter test conditions min. typ. max. unit t t v outa v ina 90% 10% t d(on) t d(off)
docid025102 rev 2 13/18 VNH5250AS-E electrical specifications 17 note: in normal operating conditions the diag x /en x pin is considered as an input pin by the device. this pin must be externally pulled high. table 12. truth table in normal operating conditions in a in b diag a /en a diag b /en b out a out b cs operating mode 1 1 11 h h high imp. brake to v cc 0l i sense =i out /k clockwise (cw) 0 1 l h counterclockwise (ccw) 0 l high imp. brake to gnd table 13. truth table in fault conditions (detected on out a ) in a in b diag a /en a diag b /en b out a out b cs (v csd =0v) 1 1 0 1 open h high imp. 0l 0 1hi outb /k 0l high imp. x x 0 open fault information protection action
electrical specifications VNH5250AS-E 14/18 docid025102 rev 2 table 14. electrical transient requirements (part 1) iso 7637-2: 2004(e) test pulse test levels (1) 1. the above test levels must be considered referred to v cc = 13.5 v except for pulse 5b. number of pulses or test times burst cycle/pulse repetition time delays and impedance iii iv min. max. 1 -75v -100v 5000 pulses 0.5s 5s 2 ms, 10 2a +37v +50v 5000 pulses 0.2s 5s 50s, 2 3a -100v -150v 1h 90ms 100ms 0.1s, 50 3b +75v +100v 1h 90ms 100ms 0.1s, 50 4 -6v -7v 1 pulse 100ms, 0.01 5b (2) 2. valid in case of external load dum p clamp: 40v maximum referred to ground. +65v +87v 1 pulse 400ms, 2 table 15. electrical transient requirements (part 2) iso 7637-2: 2004(e) test pulse test level results (1) 1. the above test levels must be considered referred to v cc = 13.5 v except for pulse 5b. iii iv 1c c 2a c c 3a c c 3b c c 4c c 5b (2) 2. valid in case of external load dum p clamp: 40v maximum referred to ground. cc table 16. electrical transient requirements (part 3) class contents c all functions of the device are performed as designed after exposure to disturbance. e one or more functions of the device are not performed as designed after exposure to disturbance and cannot be returned to proper operation without replacing the device.
docid025102 rev 2 15/18 VNH5250AS-E package and packing information 17 3 package and packing information 3.1 ecopack ? 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. 3.2 so-16n mechanical data figure 5. so-16n package dimensions ("1($'5
package and packing information VNH5250AS-E 16/18 docid025102 rev 2 table 17. so-16n mechanical data symbol millimeters min. typ. max. a 1.75 a1 0.10 0.25 a2 1.25 b0.31 0.51 c0.17 0.25 d 9.80 9.90 10.00 e 5.80 6.00 6.20 e1 3.80 3.90 4.00 e1.27 h0.25 0.50 l0.40 1.27 k0 8 ccc 1.10
docid025102 rev 2 17/18 VNH5250AS-E revision history 17 4 revision history table 18. document revision history date revision changes 05-aug-2013 1 initial release. 16-sep-2013 2 updated disclaimer.
VNH5250AS-E 18/18 docid025102 rev 2 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. st products are not designed or authorized for use in: (a) safety critical applications such as life supporting, active implanted devices or systems with product functional safety requirements; (b) aeronautic applications; (c) automotive applications or environments, and/or (d) aerospace applications or environments. where st products are not designed for such use, the purchaser shall use products at purchaser?s sole risk, even if st has been informed in writing of such usage, unless a product is expressly designated by st as being intended for ?automotive, automotive safety or medical? industry domains according to st product design specifications. products formally escc, qml or jan qualified are deemed suitable for use in aerospace by the corresponding governmental agency. resale of st products with provisions different from the statem ents 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. ? 2013 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 - swed en - switzerland - united kingdom - united states of america www.st.com

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