september 2015 docid027587 rev 2 1 / 7 for further information contact your local stmicroelectronics sales office www.st.com ev - vnq7140aj vnq7140aj evaluation board data brief features max transient supply voltage v cc 41 v operating voltage range v cc 4 to 28 v typ. on - state resistance (per ch) r on 140 m current limitation (typ) i limh 12 a s tand - by current (max) i stby 0.5 a ? simple single ic application board dedicated for vnq7140aj ? provides electrical connectivity and thermal heat - sinking for easy prototyping ? general device features ? quad channel smart high side driver with analog feedback ? very low standby current ? compatible with 3 v and 5 v cmos outputs ? diagnostic functions ? multiplexed analog feedback of: load current with high precision proportional current mirror, v cc supply voltage and tchip device temperature ? overload and short to groun d (power limitation) indication ? thermal shutdown indication ? off - state open - load detection ? output short to v cc detection ? sense enable/disable ? protections ? undervoltage shutdown ? overvoltage clamp ? load current limitation ? self limiting of fast thermal transients ? configurable latch - off on overtemperature or power limitation with dedicated fault reset pin ? loss of ground and loss of v cc ? reverse battery with external components ? electrostatic discharge protection application typical applications are all types of automotive resistive, inductive and capacitive loads. table 1: device summary order code reference ev - vnq7140aj vnq7140aj evaluation board
description ev - vnq7140aj 2 / 7 docid027587 rev 2 1 description this board provides you an easy way t o connect stmicroelectronics ? vipower ? m0 - 7 technology into your existing system. the board comes pre - assembled with vnq7140aj high - side driver. on board, a minimum set of electrical components (as for device datasheet recommendation), enables the user to directly connect the load, the power supply and the microcontroller without any additional effort in external component design and connection. the vnq7140aj is a quad channel high - side driver manufactured using st proprietary vipower technology and housed in powersso - 16 package. the device is designed to drive 12 v automotive grounded loads through a 3 v and 5 v cmos - compatible interface and to provide protection and diagnostics. the device integrates advanced protective functions such as load current limi tation, overload active management by power limitation and overtemperature shutdown with configurable latch - off. a faultrst pin unlatches the output in case of fault or disables the latch - off functionality. a dedicated multifunction multiplexed analog out put pin delivers sophisticated diagnostic functions including high precision proportional load current sense, supply voltage feedback and chip temperature sense, in addition to the detection of overload and short circuit to ground, short to v cc and off - sta te open - load. a sense enable pin allows off - state diagnosis to be disabled during the module low - power mode as well as external sense resistor sharing among similar devices. figure 1 : evaluation board schematic
ev - vnq7140aj board connections docid027587 rev 2 3 / 7 2 board connections figure 2: "evaluation board connections" shows the placement of the connectors to be used to supply the evaluation board, to connect the load and to control the functionality and diagnostic of the device. figure 2 : evaluation board connections table 2: j4 connector: p in functions connector pin number pin name pin function j4 14 n/a not connected j4 5 in_pullup connection to optional external pull - up resistor for open load detection in off - state. j4 6 +5v 5v power supply j4 7 faultrst active low compatible with 3v and 5v cmos outputs pin; it unlatches the output in case of fault; if kept low, sets the outputs in auto - restart mode. j4 8 multisense multiplexed analog sense output pin; it delivers a current proportional to the selected diagnostic: load current, supply voltage or chip temperature. j4 9 s_en active high compatible with 3v and 5v cmos outputs pin; it enables the multisense diagnostic pin. j4 1012 sel 0,1,2 active high compatible with 3v and 5v cmos outputs pin; they address the multisense multiplexer. j4 1316 in 0,1,2,3 voltage controlled input pin with hysteresis, compatible with 3v and 5v cmos outputs. they control output switch state. j4 1718 n/a not connected in case the user wishes to utilize the current sense/multisense function of the device, it is necessary to plug a sense resistor in r sense . the package includes a through - hole resistor, to be mounted on tp1 - tp2 (see figure 4: "mounting through - hole sense resistor" ).
board connections ev - vnq7140aj 4 / 7 docid027587 rev 2 different r sense values can be adopted base d on user preference. another option is soldering an smd resistor on the dedicated pcb pad, as shown in figure 5: "pads for soldering smd resistor" . figure 3 : no sense resistor figure 4 : mounting through - hole sense resistor figure 5 : pads for soldering smd resistor
ev - vnq7140aj thermal data docid027587 rev 2 5 / 7 3 thermal data table 3: thermal data symbol p arameter max unit r thj - amb thermal resistance junction - ambient (max) 43 c/w table 4: pcb specifications parameter value board dimensions 25 mm x 41.5 mm number of cu layer 2 layer cu thickness 35 m board finish thickness 1.6 mm +/ - 10% board material fr4 thermal vias diameter 0.3 mm
revision history ev - vnq7140aj 6 / 7 docid027587 rev 2 4 revision history table 5: revision history date revision changes 27 - feb - 2015 1 initial release. 02 - sep - 2015 2 changed image in the cover page. updated section 1: "description"
ev - vnq7140aj docid027587 rev 2 7 / 7 important notice C please read carefully stmicroelectronics nv and its subsidiaries (st) reserve the right to make changes, corrections, enhancements, modifications , and improvements to st products and/or to this document at any time without notice. purchasers s hould obtain the latest relevant information on st products before placing orders. st products are sold pursuant to sts terms and conditions of sale in place at the time of or der acknowledgement. purchasers are solely responsible for the choice, select ion, and use of st products and st assumes no liability for application assistance or the design of purchasers products. no license, express or implied, to any intellectual property right is granted by st herein. resale of st products with provisions different from the information set forth herein shall void any warranty granted by st for such product. st and the st logo are trademarks of st. all other product or service names are the property of their respective owners. information in this document supersedes and replaces information previously supplied in any prior versions of this document. ? 2015 stmicroelectronics C all rights reserved
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