L99ASC03GTR

L99ASC03G Brushless / sensorless 3-phase motor pre-driver for automotive applications Datasheet - production data Drain-source monitoring and open-load detection TQFP48 7x7x1mm with Exposed Pad (4.5 x 4.5 mm) package Applications Mechatronic three-phase motor application such TQFP48-EP as engine cooling fans, fuel pumps, water pumps, oil pumps Features Description AEC-Q100 qualified The L99ASC03G is a multifunctional system IC designed for three-phase motor control 5 V low-drop voltage regulator (200 mA applications. continuous mode) The device features a voltage regulator to supply Very low current consumption in standby mode an external microcontroller and an operation (typ. 15 A) amplifier for motor current sensing. It is designed ST SPI interface for control and diagnostics to control six external N-channel MOSFETs in Window watchdog and fail-safe functionality bridge configuration to drive three-phase motors in automotive applications. All gate driver outputs Two separate power supply pins are controlled by separate inputs. Three half-bridge drivers to control external MOSFETs (configurable by SPI) The integrated Serial Peripheral Interface (SPI) makes it possible to adjust device parameters, Full drive of external MOSFETs down to 6 V control all operating modes and read out input voltage diagnostic information. Input pin for each gate driver (with cross- current protection) Two-stage charge pump supporting 100% duty cycle PWM operation up to 80 kHz (not restricted) Table 1. Device summary Current-sense amplifier (configurable by SPI) Order codes Package Disable input to turn off gate driver outputs Tube Tape and real Analog multiplexer output to monitor external TQFP48-EP L99ASC03G L99ASC03GTR power supply voltages and internal junction temperature Advanced BEMF detection IP Overcurrent protection (programmable) July 2016 DocID029080 Rev 2 1/70 This is information on a product in full production. www.st.comContents L99ASC03G Contents 1 Block diagram and pin descriptions 7 2 Device description . 10 2.1 Supply pins (V , V , V ) 10 S SREG SMS 2.1.1 V , V and V overvoltage warning 10 S SREG SMS 2.1.2 V , V and V overvoltage . 10 S SREG SMS 2.1.3 V , V and V undervoltage 10 S SREG SMS 2.2 V (5V) voltage regulator 10 DD 2.3 NRES reset output .11 2.4 Watchdog . 12 2.5 Device operating modes 14 2.5.1 Active Mode 14 2.5.2 Flash Mode 14 2.5.3 VDD Standby Mode 15 2.5.4 VBAT Standby Mode . 15 2.5.5 Device mode state diagram 16 2.5.6 Functional overview 17 2.6 DIS pin . 17 2.7 INH pin . 17 2.8 Thermal warning and thermal shutdown . 17 2.8.1 Normal mode: TEMPM = 0 (TW1, TSD1, TSD2) . 18 2.8.2 Warning mode: TEMP = 1 (TW1, TW2, TSD2) 18 2.9 Wake-up events 20 2.10 Charge pump 20 2.11 Gate drivers . 20 2.12 Drain-source monitoring 22 2.12.1 Drain-source monitoring in ON state (short-circuit detection) 22 2.12.2 Drain-source monitoring in OFF state (open-load / short-circuit detection) 22 2.13 Current-sense amplifier 23 2.14 Overcurrent detection 23 2.15 BEMF module 23 2.15.1 BEMF comparator . 23 2/70 DocID029080 Rev 2