VND7020AJTR-E

VND7020AJ-E Double channel high-side driver with MultiSense analog feedback for automotive applications Datasheet - production data – Configurable latch-off on overtemperature or power limitation with dedicated fault reset pin – Loss of ground and loss of VCC – Reverse battery with external components – Electrostatic discharge protection Applications Features Max transient supply voltage VCC 40 V Operating voltage range VCC 4 to 28 V Typ. on-state resistance (per Ch) RON 22 mΩ Current limitation (typ) ILIMH 63 A Standby current (max) ISTBY 0.5 µA • Automotive qualified • General – Double 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, VCC supply voltage and TCHIP device temperature – 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 October 2014 This is information on a product in full production. • All types of Automotive resistive, inductive and capacitive loads • Specially intended for automotive turn indicators (up to 2x P27W or SAE1156 and R5W paralleled or LED rear combinations) Description The VND7020AJ-E is a double channel high-side driver manufactured using ST proprietary VIPower® M0-7 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 VCC 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. DocID018795 Rev 10 1/48 www.st.com Contents VND7020AJ-E Contents 1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 4 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.3 Main electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.4 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2.5 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.1 Power limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.2 Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.3 Current limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.4 Negative voltage clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 4.1 GND protection network against reverse battery . . . . . . . . . . . . . . . . . . . 30 4.1.1 4.2 Immunity against transient electrical disturbances . . . . . . . . . . . . . . . . . . 31 4.3 MCU I/Os protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.4 Multisense - analog current sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.5 5 2/48 4.4.1 Principle of Multisense signal generation . . . . . . . . . . . . . . . . . . . . . . . 34 4.4.2 TCASE and VCC monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 4.4.3 Short to VCC and OFF-state open-load detection . . . . . . . . . . . . . . . . . 37 Maximum demagnetization energy (VCC = 16 V) . . . . . . . . . . . . . . . . . . . 38 Package and PCB thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 5.1 6 Diode (DGND) in the ground line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 PowerSSO-16 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 6.1 ECOPACK® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 6.2 PowerSSO-16 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 DocID018795 Rev 10 VND7020AJ-E Contents 7 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 DocID018795 Rev 10 3/48 3 List of tables VND7020AJ-E List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Table 18. 4/48 Pin functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Suggested connections for unused and not connected pins . . . . . . . . . . . . . . . . . . . . . . . . 7 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Switching (VCC = 13 V; -40°C < Tj < 150°C, unless otherwise specified). . . . . . . . . . . . . . 11 Logic Inputs (7 V < VCC < 28 V; -40°C < Tj < 150°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Protections (7 V < VCC < 18 V; -40°C < Tj < 150°C). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 MultiSense (7 V < VCC < 18 V; -40°C < Tj < 150°C). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Truth table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 MultiSense multiplexer addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 ISO 7637-2 - electrical transient conduction along supply line . . . . . . . . . . . . . . . . . . . . . . 31 Multisense pin levels in off-state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 PCB properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Thermal parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 PowerSSO-16 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 DocID018795 Rev 10 VND7020AJ-E List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Figure 39. Figure 40. Figure 41. Figure 42. Figure 43. Figure 44. Figure 45. Figure 46. Figure 47. Figure 48. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Configuration diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Current and voltage conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 IOUT/ISENSE versus IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Current sense accuracy versus IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Switching time and Pulse skew . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 MultiSense timings (current sense mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Multisense timings (chip temperature and VCC sense mode) . . . . . . . . . . . . . . . . . . . . . . 20 TDSTKON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Latch functionality - behavior in hard short circuit condition (TAMB