Automotive 3-phase motor gate driver unit

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  • L9908 is a gate driver unit (GDU) for controlling 6 N-channel FETs for brushless motors in automotive applications.

    Each one of the 3 half bridge drivers channels (HS/LS couples) can be independently configured allowing different load driving and is able to withstand -14 V to 95 V excursion on motor`s pins.
    Through 6 dedicated parallel input the pre-driver stages can be controlled independently supporting duty cycle operations from 0% to 100% and allowing to implement all kinds of electric motor control strategy. A dedicated combination of regulators, charge pumps and bootstrap circuits allows L9908 to be suitable to operate in passenger, commercial or hybrid vehicles.
    Safe operation of half bridges is ensured by shoot-trough diagnosis, dead-time, short to battery, short to ground and open load detection plus a real time phase voltage monitoring.
    L9908 is equipped with 3 independent high accuracy current monitor channels with SPI-configurable input differential voltage ranges for ground referenced current measurements, with 5 V/3.3 V output dynamic range compatibility.
    L9908 implements diagnostics on external and internal supply, ground level, internal temperature.
    A 32-bit out of frame SPI-slave interface is implemented for communication up to 10 MHz between L9908 and uC. SPI communication is safe-guarded by 5-bit CRC, 1bit frame counter, frame length check and an SPI-configurable Window Watchdog.

    主要特性

    • AEC-Q100 qualified
    • Full ISO26262 compliant, ASIL-D systems ready
    • VDH motor supply voltage range from 4.5 V to 75 V for working in single (12 V systems), double (24 V systems) and 48 V battery applications
    • 3.3 V internal supply voltage generated from 5 V on VDD pin
    • Digital I/O compatible to 3.3 V/5 V logics
    • 6 separate N-channel FET pre-drivers:
      • dedicated source connection to each FET
      • the device can withstand -14 V to 95 V on motor connection pins
      • 0% to 100% duty cycle operation support
      • dedicated PWM input pin for each gate driver
    • 3 differential high accuracy current monitors for ground referred current measurements:
      • ADC/DAC architecture
      • SPI adjustable Gain Factor and Output Offset
      • built-in error calibration
      • the device can withstand -14 V to 6 V on input sensing pins
      • SPI readable current measurement
      • 0 to 4.6 V DAC output dynamic range
    • 3 real time phase voltage monitor channels:
      • SPI programmable phase voltage feedback;
      • SPI readable phase duty cycle measurement;
    • 32-bits - 10 MHz SPI interface with 5-bit CRC and 1bit frame counter for internal setting, self-test and full diagnostics
    • Protection and diagnostic:
      • SPI programmable VDS diagnostic and protection in on state
      • SPI programmable Dead Time protection
      • SPI programmable Shoot-trough diagnostic and protection
      • Open load, short to GND and short to battery diagnostic in off state
      • Over-temperature diagnostic and protection with SPI programmable warning flag
      • SPI readable Tj measurement
      • Ground loss diagnostic
      • System clock monitoring
      • Power supply pins VDD, VDH, VBP over-voltage and under-voltage diagnostic
      • FET driver supply VPRE and VCP under-voltage and over-voltage diagnostic
      • SPI Window Watchdog
      • Fault status flag output

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STMicroelectronics - L9908

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质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
L9908-TR
建议
TQFP 48 7x7x1.0 1.0 Exp Pad Down 工业 -

L9908-TR

Package:

TQFP 48 7x7x1.0 1.0 Exp Pad Down

Material Declaration**:

Marketing Status

建议

Package

TQFP 48 7x7x1.0 1.0 Exp Pad Down

Grade

Industrial

RoHS Compliance Grade

-

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

样片和购买

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L9908-TR 无法联系到经销商,请联系我们的销售办事处
建议
- - - TQFP 48 7x7x1.0 1.0 Exp Pad Down -40 150 -

L9908-TR

供货状态

建议

ECCN (US)

-

Budgetary Price (US$)*/Qty

ECCN (EU)

-

包装类型

-

封装

TQFP 48 7x7x1.0 1.0 Exp Pad Down

Operating Temperature (°C)

(最小值)

-40

(最大值)

150

Budgetary Price (US$)* / Qty

Country of Origin

-

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商