VNQ5E050MK-E Quad channel high-side driver with analog current sense for automotive applications Features Max supply voltage VCC 41V Operating voltage range VCC 4.5 to 28V Max on-state resistance (per ch.) RON 50 m Current limitation (typ) ILIMH 27 A Off-state supply current IS 2 A(1) 1. Typical value with all loads connected. - Electrostatic discharge protection Applications General - Inrush current active management by power limitation - Very low standby current - 3.0V CMOS compatible inputs - Optimized electromagnetic emissions - Very low electromagnetic susceptibility - In compliance with the 2002/95/EC european directive - Very low current sense leakage Diagnostic functions - Proportional load current sense - High current sense precision for wide currents range - Current sense disable - Overload and short to ground (power limitation) indication - Thermal shutdown indication Protections - Undervoltage shutdown - Overvoltage clamp - Load current limitation - Self limiting of fast thermal transients - Protection against loss of ground and loss of VCC - Overtemperature shutdown with auto restart (thermal shutdown) - Reverse battery protected (see Figure 29: Application schematic) October 2009 PowerSSO-24 All types of resistive, inductive and capacitive loads Suitable as LED driver Description The VNQ5E050MK-E is a quad channel high-side driver manufactured in the ST proprietary VIPower M0-5 technology and housed in the tiny PowerSSO-24 package. The VNQ5E050MK-E is designed to drive 12V automotive grounded loads delivering protection, diagnostics and easy 3V and 5V CMOS compatible interface with any microcontroller. The device integrates advanced protective functions such as load current limitation, inrush and overload active management by power limitation, overtemperature shut-off with auto-restart and over-voltage active clamp. A dedicated analog current sense pin is associated with every output channel in order to provide Enhanced diagnostic functions including fast detection of overload and short-circuit to ground through power limitation indication and overtemperature indication. The current sensing and diagnostic feedback of the whole device can be disabled by pulling the CS_DIS pin high to allow sharing of the external sense resistor with other similar devices. Doc ID 16374 Rev 1 1/36 www.st.com 1 Contents VNQ5E050MK-E Contents 1 Block diagram and pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.5 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.1 4 3.1.1 Solution 1: resistor in the ground line (RGND only) . . . . . . . . . . . . . . . . 23 3.1.2 Solution 2: diode (DGND) in the ground line . . . . . . . . . . . . . . . . . . . . . 24 3.2 Load dump protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 3.3 MCU I/Os protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 3.4 Current sense and diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.5 Maximum demagnetization energy (VCC =13.5V) . . . . . . . . . . . . . . . . . . 27 Package and PC board thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 4.1 5 GND protection network against reverse battery . . . . . . . . . . . . . . . . . . . 23 PowerSSO-24 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.1 ECOPACK(R) packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.2 PowerSSO-24 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.3 Packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 6 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 2/36 Doc ID 16374 Rev 1 VNQ5E050MK-E List of tables 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. Pin functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Suggested connections for unused and not connected pins . . . . . . . . . . . . . . . . . . . . . . . . 6 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Switching (VCC=13V; Tj= 25C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Logic inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Protections and diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Current sense (8V Power Limitation Thermal cycling ILimL > IOUT VSENSE VCS_DIS 18/36 Doc ID 16374 Rev 1 VNQ5E050MK-E Electrical specifications Figure 12. Intermittent overload Intermittent Overload INPUT Overload ILimH > ILimL > Nominal load IOUT VSENSEH> VSENSE VCS_DIS Figure 13. TJ evolution in overload or short to GND TJ evolution in Overload or Short to GND INPUT Self-limitation of fast thermal transients TTSD THYST TR TJ_START TJ ILimH > Power Limitation < ILimL IOUT Doc ID 16374 Rev 1 19/36 Electrical specifications 2.5 VNQ5E050MK-E Electrical characteristics curves Figure 14. Off-state output current Figure 15. High level input current Iloff (nA) Iih (A) 5 700 4,5 600 Vin=2.1V Off State Vcc=13V Vin=Vout=0V 500 4 3,5 3 400 2,5 300 2 1,5 200 1 100 0,5 0 0 -50 -25 0 25 50 75 100 125 150 175 -50 -25 0 25 Tc (C) 50 75 100 125 150 175 100 125 150 175 Tc (C) Figure 16. Input clamp voltage Figure 17. Input low level Vicl (V) Vil (V) 7 2 6,8 1,8 lin=1mA 6,6 1,6 6,4 1,4 6,2 1,2 6 1 5,8 0,8 5,6 0,6 5,4 0,4 5,2 0,2 5 0 -50 -25 0 25 50 75 100 125 150 175 -50 -25 0 25 Tc (C) 50 75 Tc (C) Figure 18. Input high level Figure 19. Input hysteresis voltage Vih (V) Vihyst (V) 4 1 0,9 3,5 0,8 3 0,7 2,5 0,6 2 0,5 0,4 1,5 0,3 1 0,2 0,5 0,1 0 0 -50 -25 0 25 50 75 100 125 150 175 Tc (C) 20/36 -50 -25 0 25 50 75 Tc (C) Doc ID 16374 Rev 1 100 125 150 175 VNQ5E050MK-E Electrical specifications Figure 20. On-state resistance vs Tcase Figure 21. On-state resistance vs VCC Ron (mOhm) Ron (mOhm) 150 100 Iout= 2A Vcc=13V 120 Tc=150C 80 Tc=125C 90 60 60 40 30 20 Tc=25C Tc=-40C 0 0 -50 -25 0 25 50 75 100 125 150 175 0 5 10 15 Tc (C) 20 25 30 35 40 150 175 150 175 Vcc (V) Figure 22. Undervoltage shutdown Figure 23. Turn-on voltage slope Vusd (V) (dVout/dt )On (V/ms) 16 1000 900 14 Vcc=13V RI=6.5 Ohm 800 12 700 10 600 8 500 400 6 300 4 200 2 100 0 0 -50 -25 0 25 50 75 100 125 150 175 -50 -25 0 25 Tc (C) 50 75 100 125 Tc (C) Figure 24. ILIMH vs Tcase Figure 25. Turn-off voltage slope Ilimh (A) (dVout/dt )Off (V/ms) 40 600 550 35 Vcc=13V RI= 6.5 Ohm 500 Vcc=13V 450 30 400 350 300 25 250 20 200 150 15 100 50 10 0 -50 -25 0 25 50 75 100 125 150 175 Tc (C) -50 -25 0 25 50 75 100 125 Tc (C) Doc ID 16374 Rev 1 21/36 Electrical specifications VNQ5E050MK-E Figure 26. CS_DIS high level voltage Figure 27. CS_DIS clamp voltage Vcsdh (V) Vcsdcl(V) 4 10 9 3,5 Iin = 1 mA 8 3 7 2,5 6 2 5 4 1,5 3 1 2 0,5 1 0 0 -50 -25 0 25 50 75 100 125 150 175 Tc (C) Vcsdl (V) 3 2,5 2 1,5 1 0,5 0 -25 0 25 50 75 100 125 150 175 Tc (C) 22/36 -25 0 25 50 75 Tc (C) Figure 28. CS_DIS low level voltage -50 -50 Doc ID 16374 Rev 1 100 125 150 175 VNQ5E050MK-E 3 Application information Application information Figure 29. Application schematic +5V VCC Rprot CS_DIS Dld CU Rprot IINPUT OUTPUT Rprot CURRENT SENSE GND RSENSE Cext VGND RGND DGND Note: Channel 2, 3, 4 have the same internal circuit as channel 1. 3.1 GND protection network against reverse battery This section provides two solutions for implementing a ground protection network against reverse battery. 3.1.1 Solution 1: resistor in the ground line (RGND only) This can be used with any type of load. The following is an indication on how to dimension the RGND resistor. 1. RGND 600mV / (IS(on)max). 2. RGND (-VCC) / (-IGND) where -IGND is the DC reverse ground pin current and can be found in the absolute maximum rating section of the device datasheet. Power Dissipation in RGND (when VCC<0: during reverse battery situations) is: PD= (-VCC)2/RGND This resistor can be shared amongst several different HSDs. Please note that the value of this resistor should be calculated with formula (1) where IS(on)max becomes the sum of the maximum on-state currents of the different devices. Please note that if the microprocessor ground is not shared by the device ground then the RGND will produce a shift (IS(on)max * RGND) in the input thresholds and the status output values. This shift will vary depending on how many devices are ON in the case of several high side drivers sharing the same RGND. Doc ID 16374 Rev 1 23/36 Application information VNQ5E050MK-E If the calculated power dissipation leads to a large resistor or several devices have to share the same resistor then ST suggests to utilize Solution 2 (see below). 3.1.2 Solution 2: diode (DGND) in the ground line A resistor (RGND=1k) should be inserted in parallel to DGND if the device drives an inductive load. This small signal diode can be safely shared amongst several different HSDs. Also in this case, the presence of the ground network will produce a shift (600mV) in the input threshold and in the status output values if the microprocessor ground is not common to the device ground. This shift will not vary if more than one HSD shares the same diode/resistor network. 3.2 Load dump protection Dld is necessary (Voltage Transient Suppressor) if the load dump peak voltage exceeds the VCC max DC rating. The same applies if the device is subject to transients on the VCC line that are greater than the ones shown in the ISO 7637-2: 2004(E) table. 3.3 MCU I/Os protection If a ground protection network is used and negative transients are present on the VCC line, the control pins will be pulled negative. ST suggests to insert a resistor (Rprot) in line to prevent the MCU I/Os pins to latch-up. The value of these resistors is a compromise between the leakage current of MCU and the current required by the HSD I/Os (Input levels compatibility) with the latch-up limit of MCU I/Os. -VCCpeak/Ilatchup Rprot (VOHC-VIH-VGND) / IIHmax Calculation example: For VCCpeak= - 100V and Ilatchup 20mA; VOHC 4.5V 5k Rprot 180k. Recommended values: Rprot =10k, CEXT=10nF. 24/36 Doc ID 16374 Rev 1 VNQ5E050MK-E 3.4 Application information Current sense and diagnostic The current sense pin performs a double function (see Figure 30: Current sense and diagnostic): Current mirror of the load current in normal operation, delivering a current proportional to the load one according to a know ratio KX. The current ISENSE can be easily converted to a voltage VSENSE by means of an external resistor RSENSE. Linearity between IOUT and VSENSE is ensured up to 5V minimum (see parameter VSENSE in Table 9: Current sense (8V