july 2014 docid026302 rev 2 1 / 7 www.st.com ev - vn7040aj vn7040aj evaluation board data brief features max transient supply voltage v cc 40 v operating voltage range v cc 4 to 28 v typ. on - state resistance (per ch) r on 40 m current limitation (typ) i limh 34 a stand - by cur rent (max) i stby 0.5 a ? simple single ic application board dedicated for vn7040aj - e ? provides electrical connectivity and thermal heat - sinking for easy prototyping ? general device features ? single channel smart high - side driver with multisense analog feedback ? very low standby current ? compatible with 3 v and 5 v cmos outputs ? multisense diagnostic functions ? multiplexed analog feedback of: load current with high precision proportional current mirror, v cc supply voltage and t chip device temperature ? overload and short to ground (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 limitin g 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 applications typical applications are all types of automotive resistive, inductive and capacitive loads. description this board provides you an easy way to connect stmicroelectronics ? vipower ? m0 - 7 technology into your existing system. table 1: device summary order code reference ev - vn7040aj vn7040aj evalu ation board
overview ev - vn7040aj 2 / 7 docid026302 rev 2 1 overview the board comes pre - assembled with vn7040aj - e high - side driver. on board minimum set of electrical components (as for device datasheet recommendation) is enabling the user to directly connect the load, the power supply and the microcontroller without any additional effort in external component design and connection. the vn7040aj - e is a single 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 - compatib le interface, providing protection and diagnostics. the device integrates advanced protective functions such as load current limitation, 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 output pin delivers sophisticated diagnostic functions including high precision proportional load current sense, supply voltage fe edback and chip temperature sense, in addition to the detection of overload and short circuit to ground, short to v cc and off - state 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 1 2 3 4 5 6 7 8 9 1 0 j4 1 2 3 4 5 6 7 8 9 10 j1 vbat pgnd vbat c1 100nf pgnd d1 es1d l out0 r10 2k2 l ed2 l ed1 1 2 j 2 c2 10n f c4 10n f r9 2k2 rsense r8 4k7 r1 15k r2 15k r3 15k r4 15k r6 15k r7 15k in0 in1 faultrs t s_en multisense sel0 sel1 +5v 1 2 3 4 5 6 7 8 9 10 1 1 12 13 14 15 16 17 18 j3 con18 in0 in1 sel0 sel1 s_en multisense faultrs t out1 r5 15k c3 10nf 1 tp1 1 tp2 12 1 1 sel0 5 faultrs t 2 sen 3 sel1 6 gnd 4 multisense 7 input1 8 input0 1 10 output0 16 15 14 13 9 0 u1 pss0-16 vbat r_up1 in_pullu p r_up2 in_pullu p gapg170414 1 132cf t output0 output0 output0 output1 output1 output1 output1 pgnd pgnd pgnd pgnd pgnd vb a t t
ev - vn7040aj board connections docid026302 rev 2 3 / 7 2 board connections figure 2: "evaluation board connections" shows the placement of the connectors to be used for supplying the evaluation board, connecting the load and controlling the functionality and diagnostic of the device. figure 2 : evaluation board conn ections table 2: j3 connector: pin functions connector pin number pin name pin function j3 14 n/a not connected j3 5 in_pullup connection to optional external pull - up resistor for open load detection in off - state. j3 6 +5v 5 v power supply j3 7 faultrst active low compatible with 3 v and 5 v cmos outputs pin; it unlatches the output in case of fault; if kept low, sets the outputs in auto - restart j3 8 multisense multiplexed analog sense output pin; it delivers a current proportional to the select ed diagnostic: load current, supply voltage or chip temperature j3 9 s_en active high compatible with 3 v and 5 v cmos outputs pin; it enables the multisense diagnostic pin. j3 10 sel0 active high compatible with 3 v and 5 v cmos outputs pin; together with sel1, it addresses the multisense multiplexer j3 11 sel1 active high compatible with 3 v and 5 v cmos outputs pin; together with sel0, it addresses the multisense multiplexer j3 12 n/a not connected j3 13 in0 voltage controlled input pin with hysteresis, compatible with 3 v and 5 v cmos outputs. it controls out0 switch state j3 14 in1 voltage controlled input pin with hysteresis, compatible with 3 v and 5 v cmos outputs. it controls out1 switch state. (1)
board connections ev - vn7040aj 4 / 7 docid026302 rev 2 connector pin number pin name pin function j3 1518 n/a not connected notes: (1) input not available for single channel. 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" ). different r sense values can be adopted based 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 - vn7040aj thermal data docid026302 rev 2 5 / 7 3 thermal data table 3: thermal data symbol parameter max unit r thj - amb thermal resistance junction - ambient (max) 39 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 separation 1.1 mm thermal vias diameter 0.5 mm
revision history ev - vn7040aj 6 / 7 docid026302 rev 2 4 revision history table 5: revision history date revision changes 12 - may - 2014 1 initial release. 21 - jul - 2014 2 updated figure 1: "evaluation board schematic"
ev - vn7040aj docid026302 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. pu rchasers should 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 choi ce, selection, 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 p rovisions 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. ? 2014 stmicroelectronics C all rights reserved
|
