EV-VN7040AS

EV-VN7040AS VN7040AS evaluation board Data brief   Features Dedicated high precision proportional load current sense  Overload and short to ground (power limitation) indication  Thermal shutdown indication  OFF-state open-load detection  Output short to VCC detection  Sense enable/disable Protections  Undervoltage shutdown  Overvoltage clamp  Load current limitation  Self limiting of fast thermal transients  Loss of ground and loss of VCC  Reverse battery with external components  Electrostatic discharge protection Max transient supply voltage VCC 40 V Operating voltage range VCC 4 to 28 V Typ. on-state resistance (per Ch) RON 40 mΩ Current limitation (typ) ILIMH 34 A Applications Stand-by current (max) ISTBY 0.5 µA Typical applications are all types of automotive resistive, inductive and capacitive loads.     Simple single IC application board dedicated for VN7040AS Provides electrical connectivity and thermal heat-sinking for easy prototyping General device features  Single channel smart high side driver with analog feedback  Very low standby current  Compatible with 3 V and 5 V CMOS outputs Diagnostic functions September 2015 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 EV-VN7040AS DocID026135 Rev 2 Reference VN7040AS evaluation board 1/7 www.st.com Description 1 EV-VN7040AS Description ® ® This board provides you an easy way to connect STMicroelectronics VIPower M0-7 technology into your existing system. It comes pre-assembled with VN7040AS 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 VN7040AS is a single channel high-side driver manufactured using ST proprietary VIPower technology and housed in SO-8 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 also advanced protective functions such as load current limitation, overload active management by power limitation and overtemperature shutdown. A dedicated high precision proportional load current sense is available, in addition to the detection of overload and short circuit to ground, short to VCC and OFF-state open-load. A sense enable pin allows OFF-state diagnosis to be disabled during the module lowpower mode as well as external sense resistor sharing among similar devices. Figure 1: Evaluation board schematic Vbat Vbat J1 1 2 3 4 5 6 7 8 9 10 C1 100nF In_PullUP J2 PGND In_PullUP +5V MultiSense S_EN IN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 IN R1 15K 1 S_EN R3 15K 2 R6 15K MultiSense 4 Cext 1 Rsense 3 VCC SEn OUTPUT MultiSense OUTPUT GND TP1 SO-8 1 PGND INPUT VCC Vbat 8 Out 7 6 5 Vbat PGND TP2 D1 R7 4K7 ES1DL PGND LED CON18 1 2 3 4 5 6 7 8 9 10 R8 2k2 PGND J4 2/7 DocID026135 Rev 2 PGND C2 10nF PGND 2 J3 1 R_UP U1 EV-VN7040AS 2 Board connections 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 connections Table 2: J3 connector: pin functions Connector Pin number Pin name J3 1…4 N/A J3 5 IN_PullUP J3 6 +5V 5 V Power Supply J3 7 N/A Not connected J3 8 MultiSense Current Sense pin: it delivers a current proportional to load current J3 9 S_EN Active high compatible with 3 V and 5 V CMOS outputs pin; it enables the MultiSense diagnostic pin. J3 10…12 N/A J3 13 IN J3 14…18 N/A Pin function Not connected Connection to optional external pull-up resistor for open load detection in off-state. Not connected Voltage controlled input pin with hysteresis, compatible with 3 V and 5 V CMOS outputs. It controls OUT switch state. 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 RSENSE. The package includes a through-hole resistor, to be mounted on TP1-TP2 (see Figure 4: "Mounting through-hole sense resistor"). DocID026135 Rev 2 3/7 Board connections Different RSENSE values can be adopted based on user preference. EV-VN7040AS 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 4/7 DocID026135 Rev 2 EV-VN7040AS 3 Thermal data Thermal data Table 3: Thermal data Symbol Rthj-amb Parameter Thermal resistance junction-ambient (MAX) Max Unit 64 °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 μm Board finish thickness 1.6 mm +/- 10% Board Material FR4 Thermal vias separation 1.1 mm Thermal vias diameter 0.5 mm DocID026135 Rev 2 5/7 Revision history 4 EV-VN7040AS Revision history Table 5: Revision history 6/7 Date Revision Changes 09-Apr-2014 1 Initial release. 02-Sep-2015 2 Changed EV-VN7040AS-E in EV-VN7040AS. Updated Section "Features" and Section 1: "Description" DocID026135 Rev 2 EV-VN7040AS IMPORTANT NOTICE – 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 should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, 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 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 – All rights reserved DocID026135 Rev 2 7/7