Brushless/Sensorless 3-phase motor pre-driver for automotive applications

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  • The L99ASC03G is a multifunctional system IC designed for three-phase motor control applications.

    The device features a voltage regulator to supply an external microcontroller and an operation amplifier for motor current sensing. It is designed to control six external N-channel MOSFETs in bridge configuration to drive three-phase motors in automotive applications. All gate driver outputs are controlled by separate inputs.
    The integrated Serial Peripheral Interface (SPI) makes it possible to adjust device parameters, control all operating modes and read out diagnostic information.

    Key Features

    • AEC-Q100 qualified
    • 5 V low-drop voltage regulator (200 mA continuous mode)
    • Very low current consumption in standby mode (typ. 15 μA)
    • ST SPI interface for control and diagnostics
    • Window watchdog and fail-safe functionality
    • Two separate power supply pins
    • Three half-bridge drivers to control external MOSFETs (configurable by SPI)
    • Full drive of external MOSFETs down to 6 V input voltage
    • 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)
    • Current-sense amplifier (configurable by SPI)
    • Disable input to turn off gate driver outputs
    • Analog multiplexer output to monitor external power supply voltages and internal junction temperature
    • Advanced BEMF detection IP
    • Overcurrent protection (programmable)
    • Drain-source monitoring and open-load detection
    • TQFP48 7 x 7 x 1 mm with Exposed Pad (4.5 x 4.5 mm) package

Sample & Buy

Part Number
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
More info
Order from Distributors
Order from ST
min
max
L99ASC03GTR TQFP 48 7x7x1.0 Tape And Reel - -
Active
2.4568 1000 EAR99
MORE INFO

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofL99ASC03GTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 80 1 Order Now
MOUSER WORLDWIDE 19 1 Order Now

Distributor reported inventory date: 2019-04-17

Distributor Name

DIGIKEY

Stock

80

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

19

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-04-17

Buy direct
L99ASC03G TQFP 48 7x7x1.0 Tray - -
NRND
2.4568 1000 EAR99
MORE INFO

Country of Origin:

MALAYSIA

No availability of distributors reported, please contact our sales office

L99ASC03GTR

Package

TQFP 48 7x7x1.0

Packing Type

Tape And Reel

Unit Price (US$)

2.4568*

Distributor availability ofL99ASC03GTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 80 1 Order Now
MOUSER WORLDWIDE 19 1 Order Now

Distributor reported inventory date: 2019-04-17

Distributor Name

DIGIKEY

Stock

80

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

19

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-04-17

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

Active

Unit Price (US$)

2.4568

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L99ASC03G

Package

TQFP 48 7x7x1.0

Packing Type

Tray

Unit Price (US$)

2.4568*

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

NRND

Unit Price (US$)

2.4568

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Evaluation Tools

    • Part Number

      Evaluation board for L99ASC03G three-phase pre-driver

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS11547
      Brushless / sensorless 3-phase motor pre-driver for automotive applications
      2.0
      922.43 KB
      PDF
      DS11547

      Brushless / sensorless 3-phase motor pre-driver for automotive applications

    • Description Version Size Action
      AN5268
      Driving high power DC motor by paralleling M0-7 VNHD7xxxAY H-Bridge and M0-7 high-side driver
      1.0
      467.19 KB
      PDF
      AN4370
      L99ASC03G PMBLDC sensorless 3-phase motor driver
      4.0
      686.85 KB
      PDF
      AN4439
      L99ASC03G current sense amplifier offset adjust
      2.0
      613.38 KB
      PDF
      AN5268

      Driving high power DC motor by paralleling M0-7 VNHD7xxxAY H-Bridge and M0-7 high-side driver

      AN4370

      L99ASC03G PMBLDC sensorless 3-phase motor driver

      AN4439

      L99ASC03G current sense amplifier offset adjust

Publications and Collaterals

    • Description Version Size Action
      Automotive powertrain and safety ICs 1.0
      838.51 KB
      PDF
      Smart power solutions for car body applications 4.0
      3.38 MB
      PDF

      Automotive powertrain and safety ICs

      Smart power solutions for car body applications

    • Description Version Size Action
      ST’s solutions for automotive seating systems 1.0
      1.3 MB
      PDF

      ST’s solutions for automotive seating systems

    • Based on the EVAL-L99ASC03 evaluation board designed for sensorless 3-phase BLDC motor control, the system features enhanced power management power supply functions including various standby modes. The motherboard, based on an STM8 microcontroller, provides the logic section for monitoring and driving the L99ASC03G 3-phase motor pre-driver assembled in the daughterboard. 

      ST also provides dedicated user-friendly software with a Graphic User Interface (GUI) that enables the user to set L99ASC03G parameters while displaying device information in real time.

      Developers can easily evaluate their brushless DC motor control solution for a variety of circulation and booster pump applications for coolant, water, fuel or oil lines.

      Solution Components
      Part Number Description Status Core Products Price (US$)*
      Order / Download
      L99ASC03G

      Key features

      • AEC-Q100 qualified
      • 5 V low-drop voltage regulator (200 mA continuous mode)
      • Very low current consumption in standby mode (typ. 15 μA)
      • ST SPI interface for control and diagnostics
      • Window watchdog and fail-safe functionality
      • Two separate power supply pins
      • Three half-bridge drivers to control external MOSFETs (configurable by SPI)
      • Full drive of external MOSFETs down to 6 V input voltage
      • 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)
      • Current-sense amplifier (configurable by SPI)
      • Disable input to turn off gate driver outputs
      • Analog multiplexer output to monitor external power supply voltages and internal junction temperature
      • Advanced BEMF detection IP
      • Overcurrent protection (programmable)
      • Drain-source monitoring and open-load detection
      • TQFP48 7 x 7 x 1 mm with Exposed Pad (4.5 x 4.5 mm) package

      Show more

      Brushless/Sensorless 3-phase motor pre-driver for automotive applications
      Active
      5.19 Buy Direct
      EVAL-L99ASC03

      Key features

      • Two separated and signal shielded stages: driver & power
      • ISO pulse protection (not soldered)
      • Reverse polarity protection available on each battery voltage input: Vs, VSREG, power stage
      • Current reference comparator
      • PCB temperature sensor
      • Hall sensors connector and conditioning circuit
      • INH_wake-up button
      • Microcontroller configured to be supplied by L99ASC03 5V LDO
      • Flash mode configurable
      • Compatible with external power boards

      Show more

      Evaluation board for L99ASC03G three-phase pre-driver
      Active
      L99ASC03G 317.54 Buy Direct
      L99ASC03G

      Description:

      Brushless/Sensorless 3-phase motor pre-driver for automotive applications

      Price (US$)*

      5.19

      Key features

      • AEC-Q100 qualified
      • 5 V low-drop voltage regulator (200 mA continuous mode)
      • Very low current consumption in standby mode (typ. 15 μA)
      • ST SPI interface for control and diagnostics
      • Window watchdog and fail-safe functionality
      • Two separate power supply pins
      • Three half-bridge drivers to control external MOSFETs (configurable by SPI)
      • Full drive of external MOSFETs down to 6 V input voltage
      • 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)
      • Current-sense amplifier (configurable by SPI)
      • Disable input to turn off gate driver outputs
      • Analog multiplexer output to monitor external power supply voltages and internal junction temperature
      • Advanced BEMF detection IP
      • Overcurrent protection (programmable)
      • Drain-source monitoring and open-load detection
      • TQFP48 7 x 7 x 1 mm with Exposed Pad (4.5 x 4.5 mm) package

      Show more

      EVAL-L99ASC03

      Description:

      Evaluation board for L99ASC03G three-phase pre-driver

      Price (US$)*

      317.54

      Key features

      • Two separated and signal shielded stages: driver & power
      • ISO pulse protection (not soldered)
      • Reverse polarity protection available on each battery voltage input: Vs, VSREG, power stage
      • Current reference comparator
      • PCB temperature sensor
      • Hall sensors connector and conditioning circuit
      • INH_wake-up button
      • Microcontroller configured to be supplied by L99ASC03 5V LDO
      • Flash mode configurable
      • Compatible with external power boards

      Show more


Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L99ASC03G
NRND
TQFP 48 7x7x1.0 Automotive Ecopack2
L99ASC03GTR
Active
TQFP 48 7x7x1.0 Automotive Ecopack2

L99ASC03G

Package:

TQFP 48 7x7x1.0

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

TQFP 48 7x7x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L99ASC03GTR

Package:

TQFP 48 7x7x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TQFP 48 7x7x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.