VND5E025AK-E Double channel high side driver with analog current sense for automotive applications Features Max transient supply voltage VCC 41V Operating voltage range VCC 4.5 to 28V Max On-state resistance (per ch.) RON 25mΩ Current limitation (typ) ILIMH 60A Off state supply current IS 2 µA(1) PowerSSO-24 – Reverse battery protected (see Figure 32.) – Electrostatic discharge protection 1. Typical value with all loads connected. ■ ■ ■ General – Inrush current active management by power limitation – Very low stand-by 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 – Off state open load detection – Output short to VCC detection – 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 – Over-temperature shutdown with autorestart (thermal shut down) April 2008 Application ■ All types of resistive, inductive and capacitive loads ■ Suitable as LED driver Description The VND5E025AK-E is a double channel highside drivers manufactured in the ST proprietary VIPower M0-5 technology and housed in the tiny PowerSSO-24 package. The VND5E025AK-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, over-temperature 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 Ehnanced diagnostic functions including fast detection of overload and short-circuit to ground through power limitation indication, overtemperature indication, short-circuit to Vcc diagnosis and ON & OFF state open load detection. 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. Rev 1 1/37 www.st.com 37 Contents VND5E025AK-E Contents 1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 3.1 GND protection network against reverse battery . . . . . . . . . . . . . . . . . . . 24 3.1.1 Solution 1 : resistor in the ground line (RGND only) . . . . . . . . . . . . . . . 24 3.1.2 Solution 2 : diode (DGND) in the ground line . . . . . . . . . . . . . . . . . . . . 25 3.2 Load dump protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.3 MCU I/Os protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.4 Current sense and diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.4.1 3.5 4 Maximum demagnetization energy (VCC = 13.5V) . . . . . . . . . . . . . . . . . 28 Package and thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4.1 5 Short to VCC and OFF state open load detection . . . . . . . . . . . . . . . . . 27 PowerSSO-24 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.1 ECOPACK® packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.2 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.3 Packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 6 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 2/37 VND5E025AK-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. 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 = 25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Logic inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Protections and diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Current sense (8V < VCC < 18V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Openload detection (8V < VCC < 18V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Truth table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Electrical transient requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Thermal parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 PowerSSO-24 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 3/37 List of figures VND5E025AK-E 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. 4/37 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Configuration diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Current and voltage conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Current sense delay characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Openload Off-state delay timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Switching characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Delay response time between rising edge of ouput current and rising edge of current sense (CS enabled) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Output voltage drop limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 IOUT/ISENSE vs. IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Maximum current sense ratio drift vs. load current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Normal operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Overload or Short to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Intermittent Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 OFF-State Open Load with external circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Short to VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 TJ evolution in Overload or Short to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Off state output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 High level input current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Input clamp voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Input high level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Input low level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Input hysteresis voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 On state resistance vs Tcase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 On state resistance vs VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Undervoltage shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 ILIMH vs Tcase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Turn- On voltage slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Turn-Off voltage slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 CS_DIS high level voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 CS_DIS low level voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 CS_DIS clamp voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Current sense and diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Maximum turn off current versus inductance (for each channel) . . . . . . . . . . . . . . . . . . . . 28 PowerSSO-24 PC board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Rthj-amb vs PCB copper area in open box free air condition ( one channel ON). . . . . . . . 29 PowerSSO-24 thermal impedance junction to ambient single pulse (one channel ON). . . 30 Thermal fitting model of a double channel HSD in PowerSSO-24 . . . . . . . . . . . . . . . . . . 30 PowerSSO-24 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 PowerSSO-24 tube shipment (no suffix) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 PowerSSO-24 tape and reel shipment (suffix “TR”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 VND5E025AK-E Block diagram and pin description Figure 1. Block diagram VCC S ignal C lamp Undervoltage C ontrol & Diagnostic 1 IN1 P ower C lamp DR IVE R IN2 V ON Limitation Over temp. CH 1 C urrent Limitation OFF S tate Open load C S_ DIS V S E NSE H C S1 C ONTROL & DIAG NOS TIC C hannels 2 1 Block diagram and pin description CH 2 C urrent S ense C S2 OUT2 OUT1 LOG IC OVE R LOAD P R OTE C TION (AC TIVE P OWE R LIMITATION) G ND Table 1. Pin functions Name VCC OUTPUT1,2 GND INPUT1,2 Function Battery connection. Power output. Ground connection. Must be reverse battery protected by an external diode / resistor network. Voltage controlled input pin with hysteresis, CMOS compatible. Controls output switch state. CURRENT SENSE1,2 Analog current sense pin; delivers a current proportional to the load current. CS_DIS Active high CMOS compatible pin to disable the current sense pin. 5/37 Block diagram and pin description Figure 2. VND5E025AK-E Configuration diagram (top view) VCC GND N.C. INPUT2 N.C. INPUT1 N.C. CURRENT SENSE1 N.C. CURRENT SENSE2 CS_DIS. VCC 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 OUTPUT2 OUTPUT2 OUTPUT2 OUTPUT2 OUTPUT2 OUTPUT2 OUTPUT1 OUTPUT1 OUTPUT1 OUTPUT1 OUTPUT1 OUTPUT1 TAB = VCC Table 2. 6/37 Suggested connections for unused and not connected pins Connection / pin Current sense N.C. Output Input CS_DIS Floating Not allowed X X X X To ground Through 1kΩ resistor X Through 22kΩ resistor Through 10kΩ resistor Through 10kΩ resistor VND5E025AK-E 2 Electrical specification Electrical specification Figure 3. Current and voltage conventions IS VCC ICSD VCSD CS_DIS OUTPUT1 INPUT1 CURRENT SENSE1 VCC VOUT1 ISENSE1 IIN1 VIN1 VFn IOUT1 IIN2 IOUT2 VSENSE1 OUTPUT2 INPUT2 ISENSE2 VIN2 VOUT2 CURRENT SENSE2 GND VSENSE2 IGND Note: VFn = VOUTn - VCC during reverse battery condition. 2.1 Absolute maximum ratings Stressing the device above the rating listed in the “Absolute maximum ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to the conditions in table below for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality document. Table 3. Absolute maximum ratings Symbol Parameter Value VCC DC supply voltage 41 -VCC Reverse DC supply voltage 0.3 -IGND DC reverse ground pin current 200 IOUT DC output current - IOUT Reverse DC output current IIN ICSD Unit V mA Internally limited A 24 DC input current -1 to 10 DC current sense disable input current -ICSENSE DC reverse CS pin current VCSENSE Current sense maximum voltage mA 200 VCC - 41 to +VCC V 7/37 Electrical specification Table 3. VND5E025AK-E Absolute maximum ratings (continued) Symbol Unit 140 mJ EMAX VESD Electrostatic discharge (Human Body Model: R = 1.5kΩ; C = 100pF) - INPUT - CURRENT SENSE - CS_DIS - OUTPUT - VCC 4000 2000 4000 5000 5000 V V V V V VESD Charge device model (CDM-AEC-Q100-011) 750 V Tstg Junction operating temperature - 40 to 150 Storage temperature - 55 to 150 °C Thermal data Table 4. Symbol Thermal data Parameter Rthj-case Thermal resistance junction-case (with one channel ON) Rthj-amb Thermal resistance junction-ambient 8/37 Value Maximum switching energy (single pulse) (L = 0.8 mH; RL = 0Ω; Vbat = 13.5V; Tjstart = 150°C; IOUT = IlimL(Typ.) ) Tj 2.2 Parameter Max. value Unit 1.35 °C/W See Figure 36 VND5E025AK-E 2.3 Electrical specification Electrical characteristics Values specified in this section are for 8V<VCC<28V; -40°C<Tj<150°C, unless otherwise stated. Table 5. Power section Symbol Parameter Test conditions Min. Typ. Max. 4.5 13 28 4.5 VCC Operating supply voltage VUSD Undervoltage shutdown 3.5 VUSDhyst Undervoltage shutdown hysteresis 0.5 RON Vclamp IS IL(off1) VF On state resistance (1) Clamp voltage Supply current IOUT = 3A; Tj = 25°C 25 IOUT = 3A; Tj = 150°C 50 IOUT = 3A; VCC = 5V; Tj = 25°C 35 IS = 20 mA 41 Output - VCC diode voltage (1) 0 VIN = VOUT = 0V; VCC = 13V; Tj = 125°C 0 mΩ 52 V 2 (2) 5 (2) µA 3 6 mA 0.01 3 On State; VCC = 13V; VIN = 5V; IOUT = 0A Off state output current (1) V 46 Off State; VCC = 13V; Tj = 25°C; VIN = VOUT = VSENSE = VCSD = 0V VIN = VOUT = 0V; VCC = 13V; Tj = 25°C Unit µA 5 -IOUT = 4 A; Tj = 150°C 0.7 V 1. For each channel. 2. PowerMOS leakage included. Table 6. Symbol Switching (VCC = 13V; Tj = 25°C) Parameter td(on) Turn-On delay time td(off) Turn-Off delay time (dVOUT/dt)on Turn-On voltage slope (dVOUT/dt)off Turn-Off voltage slope WON Switching energy losses during tWON WOFF Switching energy losses during tWOFF Test conditions RL = 4.3 Ω (see Figure 6) RL = 4.3 Ω RL = 4.3 Ω (see Figure 6) Min. Typ. Max. Unit 20 µs 40 See Figure 27 V/µs See Figure 28 0.6 mJ 0.35 9/37 Electrical specification Table 7. Symbol VND5E025AK-E Logic inputs Parameter VIL Input low level voltage IIL Low level input current VIH Input high level voltage IIH High level input current VI(hyst) Input hysteresis voltage VICL ICSDL Low level CS_DIS current VCSDH CS_DIS high level voltage ICSDH High level CS_DIS current VCSD(hyst) CS_DIS hysteresis voltage Symbol Unit 0.9 V µA 2.1 V 10 0.25 IIN = 1mA 5.5 7 V -0.7 0.9 VCSD = 0.9V 1 µA 2.1 V VCSD = 2.1V 10 µA 7 V Max. Unit 0.25 ICSD = 1mA 5.5 -0.7 Parameter ILIML TTSD Shutdown temperature Test conditions Min. Typ. VCC = 13V 43 60 85 5V < VCC < 28V TR Reset temperature TRS Thermal reset of STATUS Output voltage drop limitation 15 150 175 TRS + 1 TRS + 5 200 °C 135 Thermal hysteresis (TTSD-TR) Turn-Off output voltage clamp A VCC = 13V; TR < Tj < TTSD 7 IOUT= 2A; VIN = 0; L = 6 mH VCC - 41 VCC - 46 VCC - 52 V IOUT = 0.1A; Tj = -40°C to +150°C (see Figure 8) 25 mV 1. To ensure long term reliability under heavy overload or short circuit conditions, protection and related diagnostic signals must be used together with a proper software strategy. If the device is subjected to abnormal conditions, this software must limit the duration and number of activation cycles. 10/37 µA Protections and diagnostics (1) Short circuit current during thermal cycling VON Max. 1 ICSD = -1mA DC short circuit current VDEMAG Typ. VIN = 2.1V CS_DIS clamp voltage ILIMH THYST Min. IIN = -1mA CS_DIS low level voltage Table 8. VIN = 0.9V Input clamp voltage VCSDL VCSCL Test conditions VND5E025AK-E Electrical specification Table 9. Symbol Current sense (8V < VCC < 18V) Parameter Test conditions Min. Typ. Max. Unit KLED IOUT/ISENSE IOUT = 0.05A; VSENSE = 0.5V; VCSD = 0V; 1240 3350 4960 Tj = -40°C to 150°C K0 IOUT/ISENSE IOUT = 0.5A; VSENSE = 0.5V; VCSD = 0V; Tj = -40°C to 150°C IOUT/ISENSE IOUT = 2 A; VSENSE = 4 V; VCSD = 0V; Tj = -40°C to 150°C Tj = 25°C to 150°C Current sense ratio drift IOUT = 2 A; VSENSE = 4 V; VCSD = 0V; Tj = -40°C to 150°C IOUT/ISENSE IOUT = 3 A; VSENSE = 4V; VCSD = 0V; Tj = -40°C to 150°C Tj = 25°C to150°C Current sense ratio drift IOUT = 3 A; VSENSE = 4V; VCSD = 0V; Tj = -40°C to 150°C IOUT/ISENSE IOUT = 10 A; VSENSE = 4V; VCSD = 0V; Tj = -40°C to 150°C Tj = 25°C to 150°C Current sense ratio drift IOUT = 10 A; VSENSE = 4V; VCSD = 0V; Tj = -40°C to 150°C K1 dK1/K1(1) K2 dK2/K2(1) K3 dK3/K3(1) ISENSE0 Analog sense leakage current 1860 3150 4600 2100 3100 4400 2250 3100 3850 -13 13 % 2200 3000 4100 2450 3000 3550 -12 12 % 2550 2850 3280 2650 2850 3180 -6 +6 % IOUT = 0A; VSENSE = 0V; VCSD = 5V; VIN = 0V; Tj = -40°C to 150°C VCSD = 0V; VIN = 5V; Tj = -40°C to 150°C 0 0 1 2 µA µA IOUT = 2A; VSENSE = 0V; VCSD = 5V; VIN = 5V; Tj = -40°C to 150°C 0 1 µA 30 mA IOL Openload ON state current detection threshold VIN = 5V, 8V<VCC<18V ISENSE= 5 µA 5 VSENSE Max analog sense output voltage IOUT = 3 A; VCSD = 0V 5 VSENSEH Analog sense output voltage in VCC = 13V; RSENSE = 3.9kΩ fault condition(1) 8 ISENSEH Analog sense output current in VCC = 13V; VSENSE = 5V fault condition(2) 9 V mA 11/37 Electrical specification Table 9. VND5E025AK-E Current sense (8V < VCC < 18V) (continued) Symbol Parameter Test conditions Min. Typ. Max. Unit tDSENSE1H Delay response V < 4V, 0.5 < I < 10A time from falling I SENSE= 90% of I OUT SENSEMAX edge of CS_DIS SENSE (see Figure 4) pin 30 100 tDSENSE1L Delay response V < 4V, 0.5 < I < 10A time from rising I SENSE= 10% of I OUT SENSE SENSEMAX edge of CS_DIS (see Figure 4) pin 5 20 tDSENSE2H Delay response time from rising edge of INPUT pin 80 300 Delay response time between rising edge of ∆tDSENSE2H output current and rising edge of current sense tDSENSE2L Delay response time from falling edge of INPUT pin VSENSE < 4V, 0.5 < IOUT < 10A ISENSE = 90% of ISENSEMAX (see Figure 4) µs VSENSE < 4V, ISENSE = 90% of ISENSEMAX, IOUT = 90% of IOUTMAX, IOUTMAX = 3A (see Figure 7) 110 VSENSE < 4V, 0.5 < IOUT < 10A ISENSE = 10% of ISENSEMAX (see Figure 4) 70 250 1. Fault condition includes: power limitation, overtemperature and open load OFF state detection. Table 10. Symbol VOL tDSTKON 12/37 Openload detection (8V < VCC < 18V) Parameter Test condition Openload Off State V = 0V voltage detection threshold IN Output short circuit to VCC See Figure 5 detection delay at turn Off Min. Typ. Max. Unit 2 See Figure 5 4 V 180 1200 µs IL(off2)r Off state output current at VOUT = 4V VIN=0V; VSENSE=0V VOUT rising from 0V to 4V -120 0 µA IL(off2)f Off state output current at VOUT = 2V VIN=0V; VSENSE=VSENSEH VOUT falling from VCC to 2V -50 90 µA td_vol Delay response from output rising edge to VSENSE rising edge in openload VOUT= 4 V; VIN= 0V VSENSE= 90% of VSENSEH 20 µs VND5E025AK-E Electrical specification Figure 4. Current sense delay characteristics INPUT CS_DIS LOAD CURRENT SENSE CURRENT tDSENSE2H Figure 5. tDSENSE1L tDSENSE1H tDSENSE2L Openload Off-state delay timing OUTPUT STUCK TO VCC VIN VOUT > VOL VSENSEH VCS tDSTKON Figure 6. Switching characteristics tWoff tWon VOUT 90% 80% dVOUT/dt(off) dVOUT/dt(on) tr tf 10% t INPUT td(on) td(off) t 13/37 Electrical specification Figure 7. VND5E025AK-E Delay response time between rising edge of ouput current and rising edge of current sense (CS enabled) VIN ∆tDSENSE2H t IOUT IOUTMAX 90% IOUTMAX t ISENSE ISENSEMAX 90% ISENSEMAX t Figure 8. Output voltage drop limitation VCC - VOUT Tj = 150oC Tj = 25oC Tj = -40oC Von Von/Ron(T) 14/37 IOUT VND5E025AK-E Electrical specification Figure 9. IOUT/ISENSE vs. IOUT Iout / Isense 4700 max Tj = -40 °C to 150 °C 4200 max Tj = 25 °C to 150 °C 3700 3200 typical value 2700 min Tj = 25 °C to 150 °C 2200 min Tj = -40 °C to 150 °C 1700 1200 2 3 4 5 6 7 8 9 10 IOUT (A) Figure 10. Maximum current sense ratio drift vs. load current dk/k(%) 20 15 10 5 0 -5 -10 -15 -20 2 Note: 3 4 5 6 IOUT (A) 7 8 9 10 Parameter guaranteed by design; it is not tested. 15/37 Electrical specification Table 11. VND5E025AK-E Truth table Input Output Sense (VCSD=0V)(1) Normal operation L H L H 0 Nominal Overtemperature L H L L 0 VSENSEH Undervoltage L H L L 0 0 H X (no power limitation) Cycling (power limitation) Nominal Conditions Overload H VSENSEH Short circuit to GND (Power limitation) L H L L 0 VSENSEH Open load OFF state (with external pul up) L H VSENSEH Short circuit to VCC (external pull up disconnected) L H H H VSENSEH < Nominal Negative output voltage clamp L L 0 1. If the VCSD is high, the SENSE output is at a high impedance, its potential depends on leakage currents and external circuit. 16/37 VND5E025AK-E Electrical specification Table 12. ISO 7637-2: 2004(E) Test pulse Electrical transient requirements Test levels (1) III IV 1 -75V -100V 2a +37V 3a Number of pulses or test times Burst cycle / pulse repetition time Delays and Impedance Min. Max. 5000 pulses 0.5s 5s 2 ms, 10Ω +50V 5000 pulses 0.2s 5s 50µs, 2Ω -100V -150V 1h 90ms 100ms 0.1µs, 50Ω 3b +75V +100V 1h 90ms 100ms 0.1µs, 50Ω 4 -6V -7V 1 pulse 100ms, 0.01Ω +65V +87V 1 pulse 400ms, 2Ω (2) 5b ISO 7637-2: 2004E Test pulse III VI 1 C C 2a C C 3a C C 3b C C 4 C C 5b(2) C C Class Test level results Contents C All functions of the device performed as designed after exposure to disturbance. E One or more functions of the device did not perform as designed after exposure to disturbance and cannot be returned to proper operation without replacing the device. 1. The above test levels must be considered referred to VCC = 13.5V except for pulse 5b. 2. Valid in case of external load dump clamp: 40V maximum referred to ground. 17/37 Electrical specification 2.4 VND5E025AK-E Waveforms Figure 11. Normal operation Normal operation INPUT Nominal load Nominal load IOUT VSENSE VCS_DIS Figure 12. Overload or Short to GND Overload or Short to GND INPUT ILimH > Power Limitation Thermal cycling ILimL > IOUT VSENSE VCS_DIS 18/37 VND5E025AK-E Electrical specification Figure 13. Intermittent Overload Intermittent Overload INPUT Overload ILimH > ILimL > Nominal load IOUT VSENSEH> VSENSE VCS_DIS Figure 14. OFF-State Open Load with external circuitry OFF-State Open Load with external circuitry INPUT VOUT > VOL VOUT VOL IOUT VSENSEH > tDSTK(on) VSENSE VCS_DIS 19/37 Electrical specification VND5E025AK-E Figure 15. Short to VCC Short to VCC Resistive Short to VCC Hard Short to VCC VOUT > VOL VOL VOUT IOUT tDSTK(on) tDSTK(on) VCS_DIS Figure 16. 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 20/37 VND5E025AK-E 2.5 Electrical specification Electrical characteristics curves Figure 17. Off state output current Figure 18. High level input current Iloff (nA) Iih (µA) 1000 5 900 4,5 Off State Vcc=13V Vin=Vout=0V 800 700 Vin = 2.1V VCC = 8 V 4 3,5 600 3 500 2,5 400 2 300 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 75 100 125 150 175 100 125 150 175 150 175 Tc (°C) Figure 19. Input clamp voltage Figure 20. Input high level Vicl (V) Vih (V) 7 4 6,8 3,5 lin=1mA 6,6 3 6,4 2,5 6,2 6 2 5,8 1,5 5,6 1 5,4 0,5 5,2 5 0 -50 -25 0 25 50 75 100 125 150 175 -50 -25 0 25 Tc (°C) 50 75 Tc (°C) Figure 21. Input low level Figure 22. Input hysteresis voltage Vil (V) Vihyst (V) 2 1 1,8 0,9 1,6 0,8 1,4 0,7 1,2 0,6 1 0,5 0,8 0,4 0,6 0,3 0,4 0,2 0,2 0,1 0 0 -50 -25 0 25 50 75 Tc (°C) 100 125 150 175 -50 -25 0 25 50 75 100 125 Tc (°C) 21/37 Electrical specification VND5E025AK-E Figure 23. On state resistance vs Tcase Figure 24. On state resistance vs VCC Ron (mOhm) Ron (mOhm) 70 60 60 Iout= 3A Vcc=13V 50 Tc=150°C 50 40 40 Tc=125°C 30 30 Tc=25°C 20 20 Tc=-40°C 10 10 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 25. Undervoltage shutdown Figure 26. ILIMH vs Tcase Vusd (V) Ilimh (A) 16 70 14 65 Vcc=13V 12 60 10 55 8 6 50 4 45 2 40 0 -50 -25 0 25 50 75 100 125 150 175 -50 -25 0 25 Figure 27. Turn- On voltage slope 75 100 125 Figure 28. Turn-Off voltage slope (dVout/dt )On (V/ms) (dVout/dt )Off (V/ms) 700 600 600 500 Vcc=13V RI=4.3 Ohm 500 50 Tc (°C) Tc (°C) Vcc=13V RI= 4.3 Ohm 400 400 300 300 200 200 100 100 0 0 -50 -25 0 25 50 75 Tc (°C) 22/37 100 125 150 175 -50 -25 0 25 50 75 Tc (°C) 100 125 VND5E025AK-E Electrical specification Figure 29. CS_DIS high level voltage Figure 30. CS_DIS low level voltage Vcsdh (V) Vcsdl (V) 4 3 3,5 2,5 3 2 2,5 2 1,5 1,5 1 1 0,5 0,5 0 0 -50 -25 0 25 50 75 100 125 150 175 Tc (°C) -50 -25 0 25 50 75 100 125 150 175 Tc (°C) Figure 31. CS_DIS clamp voltage Vcsdcl(V) 10 9 8 Icsd = 1 mA 7 6 5 4 3 2 1 0 -50 -25 0 25 50 75 100 125 150 175 Tc (°C) 23/37 Application information 3 VND5E025AK-E Application information Figure 32. Application schematic +5V VCC Rprot CS_DIS Dld ΜCU Rprot INPUT OUTPUT Rprot CURRENT SENSE GND RSENSE CEXT VGND RGND DGND Note: Channel 2 has 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. 24/37 VND5E025AK-E Application information 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=1kΩ) 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 transient 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 µC I/Os pins to latch-up. The value of these resistors is a compromise between the leakage current of µC and the current required by the HSD I/Os (Input levels compatibility) with the latch-up limit of µC I/Os: -VCCpeak/Ilatchup ≤Rprot ≤(VOHµC-VIH-VGND) / IIHmax Calculation example: For VCCpeak = - 100V and Ilatchup ≥ 20mA; VOHµC ≥ 4.5V 5kΩ ≤Rprot ≤180kΩ Recommended values: Rprot =10kΩ, CEXT=10nF. 25/37 Application information 3.4 VND5E025AK-E Current sense and diagnostic The current sense pin performs a double function (see Figure 33: 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 < VCC < 18V)). The current sense accuracy depends on the output current (refer to current sense electrical characteristics Table 9: Current sense (8V < VCC < 18V)). ● Diagnostic flag in fault conditions, delivering a fixed voltage VSENSEH up to a maximum current ISENSEH in case of the following fault conditions (refer to Truth table): – Power limitation activation – Over-temperature – Short to VCC in OFF state – Open load in OFF state with additional external components. A logic level high on CS_DIS pin sets at the same time all the current sense pins of the device in a high impedance state, thus disabling the current monitoring and diagnostic detection. This feature allows multiplexing of the microcontroller analog inputs by sharing of sense resistance and ADC line among different devices. Figure 33. Current sense and diagnostic VPU VBAT VCC Main MOSn 41V PU_CMD Overtemperature IOUT/KX RPU + OL OFF ISENSEH VOL Pwr_Lim CS_DIS OUTn ILoff2r ILoff2f INPUTn VSENSEH CURRENT SENSEn RPROT To uC ADC 26/37 RSENSE GND Load RPD VSENSE VND5E025AK-E 3.4.1 Application information Short to VCC and OFF state open load detection Short to VCC A short circuit between VCC and output is indicated by the relevant current sense pin set to VSENSEH during the device off state. Small or no current is delivered by the current sense during the on state depending on the nature of the short circuit. OFF state open load with external circuitry Detection of an open load in off mode requires an external pull-up resistor RPU connecting the output to a positive supply voltage VPU. It is preferable VPU to be switched off during the module stand-by mode in order to avoid the overall stand-by current consumption to increase in normal conditions, i.e. when load is connected. An external pull down resistor RPD connected between output and GND is mandatory to avoid misdetection in case of floating outputs in off state (see Figure 33: Current sense and diagnostic). RPD must be selected in order to ensure VOUT < VOLmin unless pulled up by the external circuitry: VOUT Pull − up _ OFF = RPD ⋅ I L ( off 2 ) f < VOL min = 2V RPD ≤22 KΩ is recommended. For proper open load detection in off state, the external pull-up resistor must be selected according to the following formula: VOUT Pull − up _ ON = RPD ⋅ VPU − RPU ⋅ RPD ⋅ I L ( off 2) r RPU + RPD > VOL max = 4V For the values of VOLmin ,VOLmax, IL(off2)r and IL(off2)f see Table 10: Openload detection (8V < VCC < 18V). 27/37 Application information 3.5 VND5E025AK-E Maximum demagnetization energy (VCC = 13.5V) Figure 34. Maximum turn off current versus inductance (for each channel) 100 A B C I (A) 10 1 0,1 1 L (mH) 10 100 A: Tjstart = 150°C single pulse B: Tjstart = 100°C repetitive pulse C: Tjstart = 125°C repetitive pulse VIN, IL Demagnetization Demagnetization Demagnetization t Note: Values are generated with RL = 0 Ω. In case of repetitive pulses, Tjstart (at beginning of each demagnetization) of every pulse must not exceed the temperature specified above for curves A and B. 28/37 VND5E025AK-E Package and thermal data 4 Package and thermal data 4.1 PowerSSO-24 thermal data Figure 35. PowerSSO-24 PC board Note: Layout condition of Rth and Zth measurements (PCB: Double layer, Thermal Vias, FR4 area = 77mm x 86mm, PCB thickness = 1.6mm, Cu thickness = 70µm (front and back side), Copper areas: from minimum pad layout to 8cm2). Figure 36. Rthj-amb vs PCB copper area in open box free air condition ( one channel ON) RTHj_amb(°C/W) 55 50 45 40 35 30 0 2 4 6 8 10 PCB Cu heatsink area (cm^2) 29/37 Package and thermal data VND5E025AK-E Figure 37. PowerSSO-24 thermal impedance junction to ambient single pulse (one channel ON) ZTH (°C/W) 1000 100 Footprint 2 cm2 8 cm2 10 1 0.1 0.0001 0.001 0.01 0.1 1 Time (s) 10 100 1000 Equation 1: pulse calculation formula Z THδ = R TH ⋅ δ+Z THtp ( 1 – δ) where δ = tP/T Figure 38. Thermal fitting model of a double channel HSD in PowerSSO-24 (a) a. The fitting model is a semplified thermal tool and is valid for transient evolutions where the embedded protections (power limitation or thermal cycling during thermal shutdown) are not triggered. 30/37 VND5E025AK-E Package and thermal data Table 13. Thermal parameters Area/Island (cm2) Footprint R1 (°C/W) 0.28 R2 (°C/W) 0.9 R3 (°C/W) 6 R4 (°C/W) 7.7 R5 (°C/W) 2 8 9 9 8 R6 (°C/W) 28 17 10 R7 (°C/W) 0.28 R8 (°C/W) 0.9 C1 (W.s/°C) 0.001 C2 (W.s/°C) 0.003 C3 (W.s/°C) 0.025 C4 (W.s/°C) 0.75 C5 (W.s/°C) 1 4 9 C6 (W.s/°C) 2.2 5 17 C7 (W.s/°C) 0.001 C8 (W.s/°C) 0.003 31/37 Package and packing information 5 Package and packing information 5.1 ECOPACK® packages VND5E025AK-E In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. ECOPACK® packages are lead-free. The category of Second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at www.st.com. 5.2 Package mechanical data Figure 39. PowerSSO-24 package dimensions 32/37 VND5E025AK-E Package and packing information Table 14. PowerSSO-24 mechanical data Millimeters Symbol Min. Typ. Max. A 2.15 2.47 A2 2.15 2.40 a1 0 0.075 b 0.33 0.51 c 0.23 0.32 D 10.10 10.50 E 7.4 7.6 e 0.8 e3 8.8 G 0.1 G1 0.06 H 10.1 10.5 h 0.4 k L 5° 0.55 N 0.85 10° X 4.1 4.7 Y 6.5 7.1 33/37 Package and packing information 5.3 VND5E025AK-E Packing information Figure 40. PowerSSO-24 tube shipment (no suffix) Base Qty Bulk Qty Tube length (±0.5) A B C (±0.1) C B 49 1225 532 3.5 13.8 0.6 All dimensions are in mm. A Figure 41. PowerSSO-24 tape and reel shipment (suffix “TR”) REEL DIMENSIONS Base Qty Bulk Qty A (max) B (min) C (±0.2) F G (+2 / -0) N (min) T (max) 1000 1000 330 1.5 13 20.2 24.4 100 30.4 TAPE DIMENSIONS According to Electronic Industries Association (EIA) Standard 481 rev. A, Feb. 1986 Tape width Tape Hole Spacing Component Spacing Hole Diameter Hole Diameter Hole Position Compartment Depth Hole Spacing W P0 (±0.1) P D (±0.05) D1 (min) F (±0.1) K (max) P1 (±0.1) 24 4 12 1.55 1.5 11.5 2.85 2 End All dimensions are in mm. Start Top cover tape No components Components 500mm min 500mm min Empty components pockets sealed with cover tape. User direction of feed 34/37 No components VND5E025AK-E 6 Order codes Order codes Table 15. Device summary Order codes Package PowerSSO-24 Part number (tube) Part number (tape & reel) VND5E025AK-E VND5E025AKTR-E 35/37 Revision history 7 VND5E025AK-E Revision history Table 16. 36/37 Document revision history Date Revision 01-Apr-2008 1 Changes Initial release VND5E025AK-E Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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