LV8907UW - Sensor-less Three-phase Brushless DC Motor ...

1 DATA Semiconductor Components Industries, LLC, 2016 February, 2022 Rev. 31 Publication Order Number: LV8907UW /DSensorless Three-phaseBLDC Motor Controller andPredriver, AutomotiveLV8907 UWOverviewThe LV8907 is a high performance, sensorless three phaseBrushless DC (BLDC) Motor controller with predrivers forautomotive applications. An integrated two stage charge pumpprovides gate current for a wide range of ultra low RDS(ON) device offers a rich set of system protection and diagnosticfunctions such as overcurrent, overvoltage, short-circuit,undervoltage, overtemperature and many more.

2 It supports open-loopas well as closed-loop speed control with user configurable startup,speed setting and proportional/integral (PI) control coefficients,making it suitable for a wide range of Motor and load a built-in linear regulator for powering external circuits,a watchdog timer, and a LIN (Local Interconnect Network)transceiver, the LV8907 offers a very small system LV8907 stores system parameters in embedded one-timeprogrammable (OTP) non-volatile memory in addition to RAMsystem memory.

3 An SPI interface is provided for parameter settingand monitoring the system status. With the operating junctiontemperature tolerance up to 175 C and electrically LIN compatiblecontrol signals (PWM and Enable), the LV8907 is an ideal solution forstand-alone BLDC Motor control AEC Q100 Qualified and PPAP Capable Operating Junction Temperature Up to 175 C Operating Voltage Range from V to 20 V with Tolerance V to 40 V Embedded Proprietary Sensorless Trapezoidal and Pseudo-sinusoidalCommutation Supports Open-loop as well as Closed-loop Speed Control Integrated Predrivers for Driving Six N-MOSFETs Two-stage Charge Pump for Continuous 100% Duty Cycle Operation 5 V V Regulator.

4 LIN Transceiver and Watchdog TimerApplications Using an External Microcontroller Configurable Speed Settings and PI Control Coefficients Various System Protection Features Including: Shoot through Protection Using Configurable Dead Time Drain-source Short Detection Cycle-by-cycle Current Limit and Overcurrent Shutdown Overvoltage and Undervoltage Shutdown Overtemperature Warning and Shutdown Input PWM Fault DetectionDevicePackageShipping ORDERING INFORMATIONLV8907 UWR2 GSQFP48K2500 / Tape & ReelMARKING DIAGRAM For information on tape and reel specifications,including part orientation and tape sizes, pleaserefer to our Tape and Reel Packaging SpecificationBrochure.

5 BRD8011 7x7 CASE 131 ANLV8907 YMALNY= Production YearM= Production MonthA= Assembly Start WeekLN = Lot NumberTypical Applications Pumps (Fuel, Oil, Coolant, Hydraulic Controls, vacuum, ..) Fans and Blowers (HVAC, Radiator, Condenser, Battery, Inverter, Charger, ..) BLOCK DIAGRAMF igure 1. LV8907 Block DiagramMOSFETP redriverOrGate DriverCharge Pump+ + VDSM onitorVSProtectionLogicInternalRegulator SystemRegistersLINT ransceiver /PWM InputVoltageMonitorLV8907200 mV100 mV5V/ LogicWatchdogTimer+ VSCHPVGLS ystemControlandSensorlessCommutationOTPO SCBack EMFD etectionCSBSCLKSISODIAGPWMINV3 RIVCCLIN_PWMINFGENTXDRXDV3 ROWAKETESTAGNDPGNDLGNDTHUHVHWHUOUTVOUTWO UTULVLWLRFRFSENSSULSVLSWLCOMCP2 PCP2 NCP1 PCP1 NVGLVS BLOCK DIAGRAMSF igure 2.

6 Example of Stand alone ConfigurationKeyPWMINVBAT+LV8907 CSBSCLKSISODIAGPWMINV3 RIVCCLIN_PWMINFGENTXDRXDV3 ROWAKEUHVHWHUOUTVOUTWOUTULVLWLRFRFSENSSU LSVLSWLCOMTESTCP2 PCP2 NCP1 PCP1 NVGLVSCHPV3 ROTHAGNDPGNDLGNDF igure 3. Example of LIN Based Control ConfigurationVBATKeyLINMCULV8907 CSBSCLKSISODIAGPWMINV3 RIVCCLIN_PWMINFGENTXDRXDV3 ROWAKETESTCP2 PCP2 NCP1 PCP1 NVGLVSCHP+ ASSIGNMENTSF igure 4. LV8907 PinoutLV8907 VCCRXDTXDPWMINAGNDNCCSBSCLKSISOFGDIAGTES TLGNDNCNCLIN_PWMINTHNCRFSENSNCNCRFCOMUHU OUTULSULVHVOUTVLSVLWHWOUTWLSWLV3 RIV3 ROENWAKEVSCP2 NCP2 PCP1 PCP1 NCHPVGLPGNDSQFP48K(7x7)7mm x 7mm113253624124837 PIN DESCRIPTION Pin NamePin NoDescriptionPageVCC15 V or V regulator output pin.

7 (Selected by internal register setting)Power supply for microcontroller. Connect capacitor to AGND for stability14 RXD2 Open drain logic level output of LIN_PWMIN received data. Use pull-up toa voltage less than or equal to VS16 TXD3 Logic level input of transmit data for LIN_PWMIN16 PWMIN4 Digital level PWM input pin for direct drive or speed register selection polarity can be programmed for either active high or active low15 AGND5 Analog GND pinNC6, 14, 16,18, 21, 23No ConnectionsCSB7 Active low SPI interface chip selection pin19 SCLK8 SPI interface clock input pin19SI9 Active high SPI interface serial data input pin19SO10 Open drain SPI interface serial data output pin19FG11 Open drain back electromotive force (BEMF)

8 Transition output pin. The frequen-cy division ratio is selectable via register settings18 DIAG12 Programmable open drain diagnostic output16 LGND13 LIN Block GND pin. Must be connected to AGND on the PCBLIN_PWMIN15 LIN transceiver input/output. Register selectable as high voltage PWM inputwith a VVS/2 threshold16 TEST17 Factory test pin. Connect to GNDTH19 Thermistor input pin for power stage temperature detection. If the input voltageis below the threshold voltage, an error is triggered. The error threshold isprogrammable. To disable tie to V3RO17 RFSENS20 Shunt resistance reference pin.

9 Connect this pin to the GND side of the Shuntresistor with Kelvin DESCRIPTION (continued)Pin NamePageDescriptionPin NoRF22 Output current detect pin. Connect this pin to higher terminal of the shunt resistor with Kelvin leads17 COM24 COM input pin. Connect this pin to the Motor neutral point if available. Thispoint may be derived from a resistive network with 1k resistors to the phases12 SULSVLSWL332925 Current return path for low-side gate drive. Short circuit shutoff level is measured between this pin and its corresponding phase pin16 ULVLWL343026 Gate driver output pin for the low-side Nch Power FET.

10 Use gate resistors forwave-shaping16 UOUTVOUTWOUT353127 Current return path for high side gate drive and reference for high side short circuit driver output pin for the high-side Nch Power FET. Use gate resistors forwave-shaping16 PGND37 GND pin for the charge pumpVGL38 Power supply pin for low-side gate drive. Connect decoupling capacitor between this pin and GND14 CHP39 Power supply pin for high-side gate drive. Connect decoupling capacitor between this pin and VS14CP1N40 Charge transfer pin of the Charge pump (1N). Connect capacitor betweenCP1P and CP1N14CP1P41 Charge transfer pin of the Charge pump (1P).