EV-VN7050AJ STMicroelectronics

EV-VN7050AJ VN7050AJ evaluation board Data brief current mirror, V supply voltage and CC T device temperature CHIP Overload and short to ground (power limitation) indication Thermal shutdown indication OFF-state open-load detection Output short to V detection CC Sense enable/disable Protections Undervoltage shutdown Overvoltage clamp Load current limitation Self limiting of fast thermal transients Features Configurable latch-off on overtemperature or power limitation Max transient supply voltage V 40 V CC with dedicated fault reset pin Operating voltage range V 4 to 28 V CC Loss of ground and loss of V CC Typ. on-state resistance (per Ch) R 50 m Reverse battery with external ON components Current limitation (typ) I 30 A LIMH Electrostatic discharge protection Stand-by current (max) I 0.5 A STBY Applications Simple single IC application board dedicated Typical applications are all types of automotive for VN7050AJ-E resistive, inductive and capacitive loads. Provides electrical connectivity and thermal heat-sinking for easy prototyping Description General device features Single channel smart high-side driver This board provides you an easy way to connect with MultiSense analog feedback STMicroelectronics VIPower M0-7 technology into your existing system. Very low standby current Compatible with 3 V and 5 V CMOS Table 1: Device summary outputs Order code Reference MultiSense diagnostic functions Multiplexed analog feedback of: load EV-VN7050AJ VN7050AJ evaluation board current with high precision proportional July 2014 DocID026300 Rev 2 1/7 www.st.com Overview EV-VN7050AJ 1 Overview The board comes pre-assembled with VN7050AJ-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 VN7050AJ-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-compatible 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 feedback and chip temperature sense, in addition to the detection of overload and short circuit to ground, short to V and OFF-state open-load. A sense enable pin allows OFF-state CC 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 Vbat Vbat J1 C1 100nF In PullU P PGND J2 Vbat R UP1 R UP2 U1 J3 IN0 R1 15K 1 INPUT0 1 IN1 R2 15K 8 16 Out0 INPUT1 OUTPUT0 2 15 OUTPUT0 3 14 R3 15K OUTPUT0 4 FaultRS T 2 13 In PullU P FaultRS T OUTPUT0 5 R4 15K +5V 6 S EN 3 FaultRS T R5 15K SEn 7 MultiSense 7 12 Out1 MultiSense MultiSense OUTPUT1 8 11 S EN C3 OUTPUT1 9 1 10 SEL0 10nF R6 15K OUTPUT1 10 SEL0 5 9 SEL1 Rsense TP1 SEL0 OUTPUT1 11 SEL1 6 SEL1 12 IN0 1 R7 15K PGND 13 4 IN1 GND 14 TP2 PGND 15 PSS0-16 16 D1 R8 17 4K7 18 ES1D L CON18 PGND LED1 LED2 C4 C2 10nF 10nF R9 R10 2k2 2k2 PGND J4 PGND PGND GAPG1704141132CFT 2/7 DocID026300 Rev 2 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 0 VBATT 1 2