NCV7608 Octal Configurable Low/High Side Driver The NCV7608 integrates 8 output drivers configurable in any combination of high-side, low-side, or H-Bridge configurations. The integrated standard Serial Peripheral Interface (SPI) allows digital control of all output stages and provides diagnostic fault information. In addition, four channels (#5-8) can be PWM controlled via external control input pins. Integrated clamping circuits (both in high and low-side operational modes), waveshaping, positive and negative transient protection, and dedicated channel pair overtemperature shutdown circuits provide for a wide range of automotive and industrial applications. Features http://onsemi.com SOIC-28 DW SUFFIX CASE 751F MARKING DIAGRAM * Eight Independent Configurable Drivers * RDS(on) = 1.2 W (typ @25C) * SPI Interface for Data Communication NCV7608 AWLYYWWG 16 Bit Frame Length, Daisy Chain Compatible 3.3 V/5 V Compatible Frame Detection PWM Inputs for 4 Outputs Ultra-low Standby Current Over Current Protection Characterized to AEC Q10X-12-REV A High-Side and Low-Side Flyback Protection Fault Reporting Undervoltage Lockout (VS and VCC) Overvoltage Shutdown (VS) Supports LED Loads Supports Cold Cranking Operation Down to 3 V Overtemperature Protection These are Pb-Free Devices * * * * * * * * * * * A WL YY WW G = Assembly Location = Wafer Lot = Year = Work Week = Pb-Free Package PIN CONNECTIONS D2 S2 S1 D1 CSB SCLK SI VCC SO GND D5 S5 S6 D6 Typical Applications * Automotive * Industrial 1 D3 S3 S4 D4 VS IN8 IN7 IN6 IN5 EN D8 S8 S7 D7 ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 22 of this data sheet. (c) Semiconductor Components Industries, LLC, 2010 December, 2010 - Rev. 2 1 Publication Order Number: NCV7608/D NCV7608 VCC VS EN Bias + Supply monitoring D5 IN5 IN6 S5 IN7 D8 IN8 S8 D1 CSB SCLK SI S1 SPI SO D4 S4 GND Figure 1. Block Diagram (See Figure 2 for detailed diagram) http://onsemi.com 2 NCV7608 VCC VS Core Functions + Supply Monitoring EN Charge Pump D5..8 IN5 IN6 IN7 IN8 Gate Drive Control S5..8 Waveshaping Slew Rate Control Fault Channels 5-8 Overtemp Overcurrent Open Load VS Charge Pump CSB D1..4 SCLK Gate Drive Control SI SO S1..4 Channels 1-4 GND Fault Waveshaping Slew Rate Control Overtemp Overcurrent Open Load To Channels 5-8 Overtemp Channels 1&2 Overtemp Channels 3&4 Overtemp Channels 5&6 Figure 2. Detailed Block Diagram http://onsemi.com 3 Overtemp Channels 7&8 NCV7608 PACKAGE PIN DESCRIPTION Pin # Symbol 1 D2 Drain of configurable driver #2 Description 2 S2 Source of configurable driver #2 3 S1 Source of configurable driver #1 4 D1 Drain of configurable driver #1 5 CSB SPI Chip Select "Bar" (100 kW pullup resistor to VCC) 6 SCLK SPI clock (100 kW pulldown resistor) 7 SI 8 VCC 9 SO 10 GND 11 D5 Drain of configurable driver #5 12 S5 Source of configurable driver #5 13 S6 Source of configurable driver #6 14 D6 Drain of configurable driver #6 15 D7 Drain of configurable driver #7 16 S7 Source of configurable driver #7 17 S8 Source of configurable driver #8 18 D8 Drain of configurable driver #8 19 EN Global Enable (active high) (100 kW pulldown resistor) 20 IN5 PWM control input for driver #5, (active high) (100 kW pulldown resistor) Ground if not used. 21 IN6 PWM control input for driver #6, (active high) (100 kW pulldown resistor) Ground if not used. 22 IN7 PWM control input for driver #7, (active high) (100 kW pulldown resistor) Ground if not used. 23 IN8 PWM control input for driver #8, (active high) (100 kW pulldown resistor) Ground if not used. 24 VS Battery Supply Input Voltage. 25 D4 Drain of configurable driver #4 26 S4 Source of configurable driver #4 27 S3 Source of configurable driver #3 28 D3 Drain of configurable driver #3 SPI serial data input (100 kW pulldown resistor) Logic Supply Input Voltage SPI serial data output Ground - Device substrate http://onsemi.com 4 NCV7608 MAXIMUM RATINGS (Voltages are with respect to device substrate) Rating Symbol Value Unit VCCmax -0.3 to 7 V VSDCmax VSACmax -0.3 to 34 -0.3 to 40 V V VIOmax -0.3 to 7 V Configured for High-Side Operation Drain = VS Source Output DC Voltage (S1-S8) Transient Source Output voltage (S1-S8) VSHSXDCmax VSHSXACmax -1 to 34 -29 to 34 V V Configured for Low-Side Operation Source = GND Drain Output DC Voltage (D1-D8) Transient Drain Output Voltage (D1-D8) VDLSXDCmax VDLSXACmax -1 to 34 (Note 1) -1 to 48 (Note 2) V V Wmax Wrep 100 20 mJ mJ Digital supply input voltage (VCC) Battery supply input voltage (VS) DC input supply voltage Transient input supply voltage Digital I/O pin voltage (IN5, IN6, IN7, IN8, SI, SO, CSB, SCLK, EN) Clamping energy Maximum (single pulse) Repetitive (multiple pulse) (Note )3 Electrostatic Discharge (VS, D1-D8, S1-S8) Human Body Model (100 pF, 1.5 kW) Machine Model (200 pF) Charged Device ESD4 Electrostatic Discharge (All Other Pins) Human Body Model (100 pF, 1.5 kW) Machine Model (200pF) Charged Device ESD2 AECQ10x-12-REVA SHORT-CIRCUIT RELIABILITY CHARACTERIZATION Moisture Sensitivity Level -4000 to 4000 -200 to 200 -1000 to 1000 -2000 to 2000 -200 to 200 -1000 to 1000 AECsc Grade B MSL MSL3 V V - Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. In this configuration lower voltage limit is due to drain-gate clamp. 2. Internally limited. 3. 1638000 pulses (triangular), 350 mA peak, VS = 18 V, 47 W, 410 mH, TA = 85C. RECOMMENDED OPERATING CONDITIONS Value Symbol Min Max Unit Digital supply input voltage (VCC) VCCop 3.15 5.25 V Battery supply input voltage (VS) Vsop 5.5 28 V DC Output current (Sx,Dx) Ixop - 350 mA TJ -40 150 C Min Max Unit Junction-to-Lead (YJL, YJL) 25 40 C/W Junction-to-Ambient (RqJA, qJA) (Note 4) - 82 C/W Rating Junction temperature THERMAL CONDITIONS Thermal Parameters 4. 1 oz copper, 300 mm2 copper area, 0.062 thick FR4. http://onsemi.com 5 NCV7608 ELECTRICAL CHARACTERISTICS (-40C < TJ < 150C, 5.5 V < VS < 28 V, 3.15 V < VCC < 5.25 V, EN = VCC, unless otherwise specified) Characteristic Symbol Conditions Min Typ Max Unit VS Supply Current Standby (Note 5) Run (Note 6) IQVS85 IVSop En = 0 V, 0 V v VCC v 5.25 V, Dx = VS = 13.2 V, Sx = 0 V, -40C < TJ < 85C All channels Active 0 - 1 - 5 12 mA mA VCC Supply Current Standby (Note 7) Run IQVCC IVCCop EN = 0 V, CSB = VCC, -40C < TJ < 85C all channels active, I(SO) = 0 0 - 1 - 5 3 mA mA GENERAL PARAMETERS VCC Power-on reset Threshold VCCPOR VCC Power-on reset Hysteresis VCChys VS Undervoltage Threshold VSUV VS Undervoltage Hysteresis VSUhys VS Overvoltage Threshold VSOV VS Overvoltage Hysteresis VSOhys VCC increasing VS increasing VS increasing 2.6 2.8 3.0 V 100 200 - mV 2.5 2.8 3.0 V 100 200 - mV 32 36 40 V 1.0 2.5 4.0 V THERMAL RESPONSE TW Not ATE tested 120 145 170 C Thermal Warning Hysteresis TWH Not ATE tested - 30 - C Overtemperature Shutdown TLIM Not ATE tested 155 175 195 C Overtemperature Shutdown hysteresis TLIMHY Not ATE tested - 30 - C Ratio of Overtemperature Shutdown to Thermal Warning TSTOTW Not ATE tested 1.05 1.20 - C/C VS = 8 V, I(Dx) = 200 mA VS = 5.5 V, I(Dx) = 200 mA VS = 3 V, I(Dx) = 200 mA - - - 1.2 1.4 1.6 2.8 5.6 9.9 W VS = Dx = 16 V, Sx = 0 V - - 5 mA 350 mA Thermal Warning POWER OUTPUTS, DC CHARACTERISTICS Output Transistor RDS(on) (Note 8) Output Leakage Current (Note 9) RonOPx RonVSminx RonVS3 Ilkgx Open Load Diagnostic Sink Current Low Side IdiagLSx Open Load Diagnostic Source Current High Side (Note 10) IdiagHSx Open load detection threshold voltage, VD (LS) Open load detection threshold voltage, VS (HS) Dx = 2.6 V, Sx = 0 V, Output disabled 100 215 Dx = VS, Sx = VS - 2.6 V, Output disabled -40C < TJ < 125C mA -500 -330 -150 VOLDx 1.0 2.0 3.0 V VOLSx VS-3 VS- 2 VS-1 V -1.90 0.80 -1.35 1.35 -0.80 1.90 50 50 100 100 200 200 Over Current (Note 11) High-Side Low-Side IlimHS IlimLS Output fault filter time Over Current Open Load TFOC TFOL VS = 16 V VS = 16 V 5. Refer to Figures 12 and 17 for the VS standby current behavior. 6. Refer to Figure 10. I(VS) versus Temperature. 7. Refer to Figure 16 for the VCC standby current behavior. 8. Refer to Figures 11 and 14 for RDS(on) behavior. 9. Refer to Figure 15 for output leakage current behavior. 10. Refer to Figures 18 and 19 for open load diagnostic current behavior. 11. Refer to Figure 13 for current limit behavior. http://onsemi.com 6 A ms NCV7608 ELECTRICAL CHARACTERISTICS (-40C < TJ < 150C, 5.5 V < VS < 28 V, 3.15 V < VCC < 5.25 V, EN = VCC, unless otherwise specified) Characteristic Symbol Conditions Min Typ Max 34 - 48 -29 -22 -16 Unit OUTPUT CLAMPS Output clamp Voltage Drain with respect to Source VOCLS I(Dx) = 50 mA Source = GND Output clamp Voltage Source with respect to GND VOCHS I(Sx) = -50 mA, VS = 14 V V V POWER OUTPUTS, AC CHARACTERISTICS Low Side Rise Time T_LSr 8 V < VS < 16 V Rload = 70 W 10/90% criteria, Figure 4 Low Side Fall Time T_LSf 8 V < VS < 16 V Rload = 70 W 10/90% criteria, Figure 3 High side Rise Time T_HSr 8 V < VS < 16 V Rload = 70 W 10/90% criteria, Figure 3 High side Fall Time T_HSf Serial Control Output turn-on time (High side and Low-side configuration) TDONs Serial Control Output turn-off time (High side and Low-side configuration) TDOFFs 8 V < VS < 16 V Rload = 70 W 10/90% criteria, Figure 4 8 V < VS < 16 V CSB going high (at 90%) to Vfinal going high (at 10%) or Vfinal going low (at 90%) Rload = 70 W, Figure 3 8 V < VS < 16 V CSB going high (at 90%) to Vfinal going low (at 90%) or Vfinal going high (at 10%) Rload = 70 W, Figure 4 Parallel Control Output turn-on time (High side and Low-side configuration) TDONp 8 V < VS < 16 V Inx going high (at 90%) to Vfinal going high (at 10%) or Vfinal going low (at 90%) Rload = 70 W, Figure 5 Parallel Control Output turn-off time (High side and Low-side configuration) TDOFFp 8 V < VS < 16 V Inx going low (at 10%) to Vfinal going low (at 90%) or Vfinal going high (at 10%) Rload = 70 W, Figure 6 http://onsemi.com 7 ms - 12 50 ms - 12 50 ms - 12 50 ms - 12 50 ms 1 - 50 ms 1 - 100 ms 1 - 50 ms 1 - 100 NCV7608 CSB CSB T_HSf T_HSv High-Side High-Side T_HSf TDOFFS Low-Side Low-Side T_LSf T_LSv TDONS Figure 3. Serial Turn On Figure 4. Serial Turn Off INx INx High-Side High-Side TDOFFP Low-Side Low-Side TDONP Figure 5. Parallel Turn On Figure 6. Parallel Turn Off CSB INx SCLK 10 MHz EN END SO HS LS EN SPIWak Figure 7. EN Delay Time Figure 8. SPI Wake Up http://onsemi.com 8 NCV7608 Table 1. DIGITAL INTERFACE CHARACTERISTICS Min Typ Max Unit Digital Input High Threshold Characteristic VINH 2.0 - - V Digital Input Low Threshold VINL - - 0.6 V Input Pulldown Resistance (EN, SI, SCLK, IN5, IN6, IN7, IN8) RPDx EN = SI = SCLK = VCC, IN5 = IN6 = IN7 = IN8 = VCC 50 100 200 kW IPUCSB CSB = 0 V 50 100 200 kW CSB Leakage to VCC ILCSx CSB = 5 V, VCC = 0 V - - 10 mA Input Capacitance (Note 12) CINx Not ATE Tested - - 15 pF SO - Output High VOUTH I(out) = -1 mA VCC - 1.0 - - V SO - Output Low VOUTL I(out) = 1.6 mA - - 0.4 V SO Tristate Leakage ILSOx CSB = VCC -10 - 10 mA SO Tristate Input Capacitance (Note 12) CSOx Not ATE Tested - - 15 pF SCLK Frequency CLKf VCC = 5 V VCC = 3.3 V - - - - 5 2 MHz SCLK Clock Period CLKper VCC = 5 V VCC = 3.3 V 200 500 - - - - ns ns SCLK High Time CLKH VCC = 5 V, Figure 9 85 - - ns SCLK Low Time CLKL VCC = 5 V, Figure 9 85 - - ns SCLK Setup Time CLKsup VCC = 5 V, Figure 9 85 - - ns SI Setup Time Sisup VCC = 5 V, Figure 9 50 - - ns SI Hold Time SIH VCC = 5 V, Figure 9 50 - - ns CSB Setup Time Cssup VCC = 5 V, Figure 9 100 - - ns CSB High Time CSH VCC = 5 V, Figure 9 200 - - ns SO enable after CSB falling edge (Note 12) CStSOf VCC = 5 V, Figure 9 - - 50 ns SO disable after CSB rising edge (Note 12) CStSOr VCC = 5 V, Figure 9 - - 50 ns SO Rise Time SOR VCC = 5 V, Cload = 40 pF - - 25 ns SO Fall Time SOF VCC = 5 V, Cload = 40 pF - - 25 ns SO Valid Time (Note 12) SOV VCC = 5 V, Cload = 40 pF, Figure 9 - - 50 ns EN Low Valid Time ENL 10 - - ms EN Delay Time END VCC = INx = 5 V EN going high 50% to OUT5 - OUT8 turning on 50%. - - 100 ms SPIWak SI = 5 V, CSB = 0 V, SCLK = 10 MHz, EN going high 50% to SO going high 50%, Figure 8 - - 200 ms Input Pullup Resistance (CSB) SPI wake up after EN rising edge Symbol Conditions 12. Not subject to production testing. http://onsemi.com 9 NCV7608 CLKSUP CSH CSB CSSUP CSSUP SCLK CLKSUP CLKH CLKL CSB SO CStSOv CStSOf SI SIH SCLK SOV SISUP SO Figure 9. Detailed SPI Timing http://onsemi.com 10 NCV7608 TYPICAL PERFORMANCE CHARACTERISTICS 2.5 6.0 VS = 28 V, VCC = 5.5 V VS = 28 V, VCC = 3.15 V 1.5 1.0 0.5 VS = 5.5 V, VCC = 5.25 V VS = 5.5 V, VCC = 3.15 V 0 -50 0 50 4.0 3.0 2.0 VS = 8 V, HS 100 150 VS = 8 V, LS 0.0 -50 200 0 50 200 Figure 10. I(VS) vs. Temperature Figure 11. RDS(on) vs. Temperature 8.00 1.520 VS = 16 V, HS 1.500 ILIM (A) 6.00 5.00 4.00 3.00 1.480 1.460 VS = 16 V, LS 1.440 2.00 1.420 1.00 1.400 0 -1.00 0 5 10 15 20 25 1.380 -50 30 0 50 VS (V) 150 200 Figure 13. Output Over Current vs. Temperature 12 3 10 OUTPUT LEAKAGE (mA) 3.5 2.5 2 HS Driver 1.5 100 TEMPERATURE (C) Figure 12. I(VS) Standby Current vs. VS at 255C RDS(on) (W) 150 TEMPERATURE (C) 1.540 LS Driver 0.5 0 100 TEMPERATURE (C) 9.00 1 VS = 5.5 V, HS VS = 3 V, LS VS = 5.5 V, LS 1.0 7.00 I(VS) (mA) VS = 3 V, HS 5.0 RDS(on) (W) I(VS) (mA) 2.0 8 6 150C 4 2 25C -40C 125C 0 0 5 10 15 20 25 30 35 -2 -5 0 5 10 15 20 25 VS (V) DRAIN AND SUPPLY VOLTAGE (V) Figure 14. RDS(on) vs. VS Figure 15. Standby Output Leakage vs. VS http://onsemi.com 11 30 NCV7608 TYPICAL PERFORMANCE CHARACTERISTICS 5.0 16 4.5 14 4.0 12 2.5 2.0 1.5 VS = 28 V, VCC = 3.15 V 1.0 0 VS = 28 V, VCC = 5.25 V VS = 13.2 V, VCC = 5.25 V 6 VS = 5.5 V, VCC = 5.25 V VS = 5.5 V, VCC = 3.15 V 2 0 0.0 -0.5 -50 8 4 VS = 5.5 V, VCC = 5.25 V 0.5 VS = 28 V, VCC = 3.15 V VS = 13.2 V, VCC = 3.15 V 10 VS = 5.5 V, VCC = 3.15 V VS = 28 V, VCC = 5.25 V 3.0 I(VS) (mA) I(VCC) (mA) 3.5 50 100 TEMPERATURE (C) 150 -2 -50 200 300 LS, VS = 28 V 200 LS, VS = 5.5 V 100 0 -100 -200 HS, VS = 5.5 V -300 -400 -500 -50 HS, VS = 28 V 0 50 100 TEMPERATURE (C) 150 200 Low Side 200 100 0 -100 -200 High Side -300 -400 -500 0 5 10 15 20 25 30 VS (V) Figure 19. Open Load Detect Current vs. VS @ 255C 1.20 50 40 CLAMP VOLTAGE (V) -40C 1.00 V(Diode) (V) 150 300 Figure 18. Open Load Detect Current vs. Temperature 25C 0.80 125C 0.60 150C 0.40 0.20 0.00 0 50 100 TEMPERATURE (C) Figure 17. VS Standby Current vs. Temperature OPEN LOAD DIAGNOSTIC CURRENT (mA) OPEN LOAD DIAGNOSTIC CURRENT (mA) Figure 16. I(VCC) vs. Temperature 0 30 20 10 0 -10 -20 0.10 0.20 0.30 0.40 Drain-to-Source Clamp -30 -50 Source-to-Ground Clamp 0 50 100 150 I(Diode) (A) TEMPERATURE (C) Figure 20. Source-to-Drain Voltage Body Diode Figure 21. Output Clamp vs. Temperature http://onsemi.com 12 200 NCV7608 DETAILED OPERATING DESCRIPTION Normal Operation SPI-Interface The device provides a 16 bit SPI-interface. Data is imported into the NCV7608 through the SI (serial input) pin. Data is exported out of the NCV7608 through the SO (serial output) pin. The input-frame (SI) is used to command the output stages and program individual channel open load diagnostics. The response frame (SO) provides channel-specific (1bit / channel) status information and fault information. See Table 1 for channel status decoding. Words should be composed of 16 bits LSB (least significant bit) transmitted first. Power Outputs The NCV7608 provides eight independent power transistors with pins D1-D8, and S1-S8 as drain and source outputs respectively. For High-side Drive configurations (sourcing), the drain pins are connected to the battery supply. In Low-Side configurations (sinking), the drain pins are connected to the load. All outputs may be configured as high-side, low-side, half-bridge, or H-bridge. Internal clamping structures are provided to limit transient voltages when switching inductive loads. CSB SI OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 OL1 OL2 OL3 OL4 OL5 OL6 OL7 OL8 IN6 State IN7 State IN8 State N/A N/A VS PSM SCLK SO IN5 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 State TW Figure 22. SPI Frame CSB OUT1 OL7 OL8 SI SCLK SO TW N/A Figure 23. SPI Frame Detail http://onsemi.com 13 VS PSM NCV7608 Table 2. SPI INPUT / OUTPUT Input Data Bit Number Output Data Bit Description Bit Status Bit Number 15 Driver 8 Open Diagnostic Enable 0 = Disable 14 Driver 7 Open Diagnostic Enable 0 = Disable Driver 6 Open Diagnostic Enable Driver 6 Open Diagnostic Enable 0 = Disable Driver 5 Open Diagnostic Enable 0 = Disable Driver 4 Open Diagnostic Enable 0 = Disable Driver 3 Open Diagnostic Enable 0 = Disable 9 Driver 2 Open Diagnostic Enable 0 = Disable 8 Driver 1 Open Diagnostic Enable 0 = Disable Driver 8 Enable 0 = Disable 13 12 11 10 7 Bit Description Bit Status 15 VS Power Supply Monitoring 0 = No Fault 14 N/A 0 13 N/A 0 12 IN8 State (Note 13) 0 = (IN8 = 0) 1 = Enable 1 = Enable 1 = Enable 1 = Enable 1 = (IN8 = 1) 11 IN7 State (Note 13) 1 = Enable 10 IN6 State (Note 13) 1 = Enable 9 IN5 State (Note 13) 8 Driver 8 Status 0 = Disable 5 Driver 6 Enable 0 = Disable 7 Driver 7 Status 6 Driver 6 Status 0 = No Fault 5 Driver 5 Status 0 = No Fault 1 = Fault 1 = Fault 4 0 = Disable Driver 4 Status 1 = Enable Driver 4 Enable 0 = Disable 2 Driver 3 Enable 0 = Disable 3 Driver 3 Status 0 = No Fault 2 Driver 2 Status 0 = No Fault 1 = Fault 1 = Enable Driver 2 Enable 1 = Fault 1 0 = Disable Driver 1 Status 1 = Enable 0 Driver 1 Enable 0 = No Fault 1 = Fault 1 = Enable 1 0 = No Fault 1 = Fault 1 = Enable 3 0 = No Fault 1 = Fault 1 = Enable Driver 5 Enable 0 = (IN5 = 0) 1 = (IN5 = 1) 1 = Enable Driver 7 Enable 0 = (IN6 = 0) 1 = (IN6 = 1) 1 = Enable 6 0 = (IN7 = 0) 1 = (IN7 = 1) 1 = Enable 4 1 = Fault 0 = No Fault 1 = Fault 0 0 = Disable 1 = Enable Thermal Warning (TW) 0 = No Fault 1 = Fault An output driver (Driver Status) fault is either open load, over current, or over temperature. 13. When over current or thermal shutdown fault occurs, bits 9 through 12 records the state of INx. http://onsemi.com 14 NCV7608 SPI Input Parallel Input (INx) State (bits 9-12) The state of the parallel (PWM) input pins (Inx) are mirrored to SPI output bits #9-12. When overcurrent or thermal shutdown fault occurs, bits 9 through 12 record the state of INx. This enables the user to distinguish an open load fault from an over current fault when the NCV7608 is operated from two isolated controllers for the SPI input and the Parallel input. Driver Enable (bits 0-7) A zero turns the driver off. A one turns the driver on. Open Load Diagnostic (bits 8-15) A zero programming bit disables the detection of an open load condition. A one programming bit enables the detection of an open load condition. SPI Output Table 3. SO DRIVER STATUS INFORMATION SUMMARY (Bits 0-8, 15) Driver Enable Open Load Diagnostic enable Disabled Disabled 0 N/A Disabled Enabled 0 (No Open Load) N/A 1 (Open Load Detected) N/A 0 (No Fault) N/A 1 (Over Current) A valid SPI command with the offending Driver DISABLED is received. 1 (VS Power supply fail) Any valid SPI command AND VS within limits 1 (Thermal Warning) N/A 1 (Thermal Shutdown) The over temperature goes away AND a valid SPI frame with the offending driver pair DISABLED is received. Enabled SO Feedback X Status Information Reset Requirement X=Don't Care Frame Detection The frame length detector is enabled with the CSB falling edge and the SCLK rising edge. SCLK must be low during the CSB rising edge. Reference the valid SPI frame shown below. Input word integrity (SI) is evaluated by the use of a frame consistency check. The word frame length is compared to an n * 16 bit (where n is an integer) acceptable word length before the data is latched into the input register. This guarantees the proper word length has been imported and allows for daisy chain operation applications. Frame detection mode ends with CSB rising edge. Frame detection starts after the CSB falling edge and the SCLK rising edge. CSB SCLK SI OUT1 Internal Counter 1 OUT2 OUT3 2 3 OUT4 4 OUT5 5 OUT6 OUT7 OUT8 OL1 6 7 8 9 OL2 OL3 10 11 OL4 12 OL5 13 OL6 14 OL7 15 OL8 Valid 16 bits shown 16 Figure 24. Frame Detection PWM Operation The SPI information is OR'd with the respective Parallel input control pins (INx). INx = 1 activates the output stage. Channels 5, 6, 7, and 8 can be controlled via the serial port (SPI) or via the respective parallel port input pins (IN5-IN8). http://onsemi.com 15 NCV7608 INx = 0 deactivates the output stage. Special attention should be paid to detection of over current and open load conditions when operated in a pwm mode. These faults are detected in a 100 ms (typ) time window. Faults will not be detected at higher frequencies if the time period of the input signal does not allow for 100 ms detection time. Handling of Fault Conditions Table 4. FAULT SUMMARY TABLE Fault Fault Memory Driver Condition Output Register Clear Requirement None Allowed to turn on N/A Latched Latched Off A valid SPI command is received with the offending driver disabled None Allowed to turn/ remain on as long as the device is not in thermal shutdown N/A Thermal Shutdown Latched (Note 14) Latched Off The over temperature goes away AND a valid SPI frame with the offending driver pair DISABLED is received. VS Power Supply Fail Latched (Note 14) Allowed to turn on while the Voltage is within operating range After ANY valid SPI frame & voltage within operating range Open Load Over Current Thermal Warning 14. Latched conditions are cleared in the same manner (via the SPI port) during normal operation regardless of the driver turn on command path (via a SPI command or via a parallel input command). Latches are also cleared by cycling the EN pin or with a power-on reset of VCC. http://onsemi.com 16 NCV7608 Start No Driver ON Yes Current Limit Yes Over Current TFOC Yes Report Fault Latch Fault Fault Reported on SO No No No No Open Load Yes Thermal Warning Yes Thermal Warning Delay Yes No CSB Low Yes Report Fault Fault Reported on SO No TFOL No Thermal Yes Shutdown No Delay Thermal Yes Shutdown Report Fault Latch Fault Fault Reported on SO Report Fault Latch Fault Fault Reported on SO No CSB Low Yes No Report Fault VS Power Supply Fail Yes Delay VS Powerr Supply FailYes No Fault Reported on SO Figure 25. Fault Reporting Flow Chart Fault Filters architecture whereby the microprocessor sends a command (such as turning a device on when a short circuit exists) and then proceeds to other focused microprocessor activity. Eliminating an auto retry upon over current fault detection scheme reduces IC stress by reducing the frequency of attempts to turn back on. The NCV7608 detects overtemperature, over current, VS Power Supply and open load faults. Faults are reported in the Output Data fault register. The fault filter timer for over current or open load is 100 ms (typ). An over current or open load event must exist for this period of time to be recognized. There are eight fault timers, one dedicated to each driver for use for both over current and open load. Thermal Warning, Thermal Shutdown and VS Power Supply Fail each have there own dedicated timers. Thermal Warning & Overtemperature Shutdown Four independent Overtemperature shutdown circuits are featured (one common sensor for each drive pair). Channels are sequentially paired together with its own thermal detection circuit as Channels 1 and 2, Channels 3 and 4, Channels 5 and 6, and Channels 7 and 8. Each thermal detection circuit senses two temperature levels, one to give a Thermal Warning (145C typ) (TW, bit = 0), and one to shut the driver pair off (Overtemperature) at a higher temperature 30C above TW (175C typ). When the thermal detection circuit reaches the temperature point of Thermal Warning, the output data bit 0 (TW) will be set to a 1, and the outputs will remain on. Overtemperature events will be recorded as faults to the offending Output Driver pair Open Load Open Load conditions are detected in the off mode. See "OFF-Mode Open Load Diagnostics" for details. Over Current The output current is limited in both high-side and low-side configuration. Over Current is detected in the turn on mode. High power dissipation during over current can cause overtemperature shutdown. Over Current is a latched off event. Latching off a driver in over current is especially useful in systems utilizing a hierarchical software http://onsemi.com 17 NCV7608 independently of the input state (serial or parallel). Overtemperature shutdown is a latched event. Since thermal warning precedes an overtemperature shutdown, software polling of this bit will allow for load control and possible prevention of overtemperature shutdown conditions. cycle. Figure 26 below displays how this is accomplished. Bringing the CSB pin from a 1 to a 0 condition immediately displays the information on the output data bit 0, thermal warning, even in the absence of a SCLK signal. As the temperature of the NCV7608 changes from a condition from below the thermal warning threshold to above the thermal warning threshold, the state of the SO pin changes and this level is available immediately when the CSB goes to 0. A 0 on SO indicates there is no thermal warning, while a 1 indicates the IC is above the thermal warning threshold. Thermal Warning Retrieval Thermal warning information can be retrieved immediately without performing a complete SPI access Figure 26. Accessing Thermal Warning Bit Power Supply Monitoring status after reaching operational VS levels provided VCC UVLO is not breached. The SPI port remains active during VS overvoltage within a valid VCC voltage. Bit #15 is cleared with any valid SPI frame and VS within the operating limits. Undervoltage shutdown Both supply voltages (VCC and VS) are monitored for undervoltage. When VCC goes below the threshold, all outputs are turned OFF and the input and output registers are cleared. An undervoltage condition on VS will cause all channels to shut down. The fault bit (Bit #15) is latched in the Output Data Register. The channels will return to the commanded status after reaching operational VS levels provided VCC UVLO is not breached. The SPI port remains active during VS undervoltage within a valid VCC voltage. Drivers are guaranteed to operate with automotive cranking voltages down to 3 V on VS per the undervoltage shutdown thresholds. Bit# 15 is cleared with a valid SPI frame and VS within the operating limits. OFF-Mode Open Load Diagnostics Open load diagnostics are performed when the drivers are off (provided the channel is programmed to perform the operation via Bits #8 through #15). Open load diagnostics are performed by connecting two tracking current sources (IDIAGHSx and IDIAGLSx) to the corresponding outputs. To support both operation modes (high-side and low-side) and provide minimum delay due to external capacitances, both Drain and Source pin voltages of the device are monitored to generate the diagnostic information. Channel diagnostic information is directed to the output data register. Open load diagnostics are disabled during VS undervoltage or overvoltage events or when EN is low. Figure 27 shows the NCV7608 open load diagnostics principles. Figure 28 shows the internal circuitry used with the device set up as a low-side driver. Figure 29 shows the internal circuitry used with the device set up as a high-side driver. Overvoltage shutdown VS is continuously monitored for overvoltage conditions. The threshold is set above automotive jump start conditions allowing operation of the IC during jump start. The minimum overvoltage threshold is 32 V. When VS goes above the overvoltage threshold voltage, all outputs are turned OFF. The fault bit (Bit #15) is latched in the Output Data Register. Input and output registers maintain all information. The channels will return to the commanded http://onsemi.com 18 NCV7608 Figure 27. Open Load Diagnostic Principle Figure 28. Open Load Circuitry as Low Side Driver Figure 29. Open Load Circuitry as High Side Driver Open Load Diagnostic Performance operation through the parallel inputs (IN5...IN8). An internal pulldown resistor is provided to ensure device turn-off in the event the enable signal is lost. A low on EN will result in a power-on-reset to the logic. All outputs will be shut off and all registers reset. System design sometimes requires open load diagnostics to be turned off to prevent unintended operation. Input Bits 8-15 control this function. One application example would be driving LED's. Leaving the diagnostic circuitry turned on would result in visible illumination of the LED's because of the currents used in open load detection. Open load detection may still be utilized by testing at low time intervals. Loss of Ground The NCV7608 output drivers will not be active during a loss of ground condition. No damage to the device will occur during this condition for VS less than or equal to 16 V. Miscellaneous Diagnostic Implementation To provide maximum flexibility in using the device as an H-Bridge driver, a current ratio between the HS and LS diagnostic currents is implemented (the diagnostic source current is always higher in magnitude than the diagnostic Enable A logic low on EN puts the device in a current saving mode. Quiescent current (VCC) with EN low is less than 5 mA. A logic high on EN powers up the device allowing http://onsemi.com 19 NCV7608 Open Load is not a latched condition and is not reported when drivers are on. To be captured, Open Load must be present when CSB goes low. * SPI Driver Enable bit = 0 and associated INx = 0 sink current). Equal diagnostic currents would result in unpredictable results due to process variation. Timing Information Open Load Open Load is reported if open load is enabled and an open load fault exists. CSB SO OL enabled Driver Off* OL enabled Driver Off OL enabled Driver Off OL enabled Driver Off No Fault Fault No Fault Open Load Exists No Open Load Exists Open Load Absent OL enabled Driver Off OL enabled Driver On Fault No Fault Fault Open Load Exists Open Load Absent Open Load Exists OL disabled Driver Off OL disabled Driver On No Fault No Fault Driver Turns On Driver Turns On Figure 30. Open Load Timing Diagram Over Current To reset the driver status bit for over current, a valid SPI frame with ENx = 0 is required. This will reset the driver status bit and the driver can be turned back on in the next valid SPI frame. Over current is reported if the drivers' over current detection threshold is breached. The driver is latched off after 100 ms from the over current detection. CSB SO Driver OnDriver OnDriver Off No Fault Fault No Over Current Detected. Fault Over current condition is removed Over Current detected Driver latched off Driver On No Fault Fault is Reset Driver Turns On INx=0 Figure 31. Over Current Timing Diagram Thermal Warning and Thermal Shutdown The driver status is reset if the die temperature falls below 175C (typ) - 30C (typ) and a valid SPI frame with the Driver(s) x Enable bit = 0. The driver(s) can then be turned on in the next valid SPI frame with the Driver x Enable(s) = 1. Thermal Warning is reported in bit #0 when the die temperature goes above 145C (typ) and does not fall below 145C (typ) - 30C hysteresis (typ). Thermal Warning is only sampled and reported when CSB is low. Thermal Shutdown will turn off the two drivers associated with the thermal sensor when the die temperature is above 175C (typ). The driver status bit will be latched. http://onsemi.com 20 NCV7608 CSB Driver OnDriver OnDriver Off SO No Fault Fault No Fault No TW detected TW is detected Driver continues to run Thermal Warning condition is removed Driver On Fault TW is detected Driver continues to be off Figure 32. Thermal Warning Timing Diagram CSB SO Driver OnDriver OffDriver On Fault Fault No Fault Fault Reset TSD (T > 175C) Driver Off Driver Turns On T<(175C-30C) Figure 33. Thermal Shutdown Timing Diagram Power Supply Fail When coming out of VS OV or UV, the drivers will take on the state determined by the last valid SPI frame. The VS Power Supply Monitoring bit (bit #15) will be reset by any valid SPI frame. VS Overvoltage (OV) or undervoltage (UV) is reported using bit #15 (PSM) in the SO output data register. This is a latched event. Drivers will shut off during VS OV or UV. http://onsemi.com 21 NCV7608 Assumes a valid SPI frame. Figure 34. Power Supply Fail Timing Diagram 115 1.80 110 1.70 MAXIMUM POWER (W) 105 qJA (C/W) 100 95 90 1.0 oz 85 2.0 oz 80 2.0 oz 1.50 1.40 1.0 oz 1.30 1.20 1.10 75 70 0 1.60 200 400 600 800 1000 1.00 0 200 400 600 800 1000 COPPER HEAT SPREADER AREA (mm2) COPPER HEAT SPREADER AREA (mm2) Figure 35. qJA vs. Copper Heat Spreader Figure 36. Maximum Power vs. Copper Heat Spreader ORDERING INFORMATION Device NCV7608DWR2G Package Shipping SOIC-28 WB (Pb-Free) 1000 / Tape & Reel For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. http://onsemi.com 22 NCV7608 PACKAGE DIMENSIONS SOIC-28 WB CASE 751F-05 ISSUE H -X- D 28 15 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS D AND E DO NOT INCLUDE MOLD PROTRUSION 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBER PR5OTRUSION SHALL NOT BE 0.13 TOTATL IN EXCESS OF B DIMENSION AT MAXIMUM MATERIAL CONDITION. H E 0.25 M Y M -Y- 1 14 PIN 1 IDENT A L 0.10 G B 0.025 M T X S -T- A1 Y DIM A A1 B C D E G H L M SEATING PLANE C M S MILLIMETERS MIN MAX 2.35 2.65 0.13 0.29 0.35 0.49 0.23 0.32 17.80 18.05 7.40 7.60 1.27 BSC 10.05 10.55 0.41 0.90 0_ 8_ SOLDERING FOOTPRINT* 8X 11.00 28X 1.30 1 28 28X 0.52 1.27 PITCH 14 15 DIMENSIONS: MILLIMETERS *For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: orderlit@onsemi.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81-3-5773-3850 http://onsemi.com 23 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCV7608/D