Automotive fully configurable 8-channel High/Low side MOSFET

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  • The L9945 is an 8-channel MOSFET pre-driver configurable for low-side, high-side, peak and hold and H-Bridge load control. It is designed to comply with the requirements of 12 V (passenger vehicle) and 24 V (commercial vehicle) battery systems.

    All outputs can be PWM controlled. Six outputs are capable of driving safety relevant loads. One output can be dedicated to the actuation of safety relevant loads requiring a dedicated enable pin (EN6).
    The device offers the possibility of controlling two independent H-Bridges.
    The device can also drive up to two loads requiring "peak & hold" control strategy.
    The driver outputs are protected against short circuit condition.
    The device protects the external MOS in case of an overcurrent event.
    Each output provides full diagnostic information such as short to battery, short to ground and open-load. Each output status can be constantly monitored through dedicated SPI registers.
    The voltage slew rate of the external transistors 1-8 is controlled during turn ON and turn OFF in order to improve EMI behavior.
    A double, redundant, external disable source is available through DIS and NDIS pins in order to improve safety.
    The device is configurable via SPI through a 32-bit protocol.

    Key Features

    • AEC-Q100 qualified
    • 12 V and 24 V battery systems compliance
    • 3.3 V and 5 V logic compatible I/O
    • 8-channel configurable MOSFET pre-driver
      • High-side (N-channel and P-channel MOS)
      • Low-side (N-channel MOS)
      • H-bridge (up to 2 H-bridge)
      • Peak & Hold (2 loads)
    • Operating battery supply voltage 3.8 V to 36 V
    • Operating VDD supply voltage 4.5 V to 5.5 V
    • All device pins, except the ground pins, withstand at least 40 V
    • Programmable gate charge/discharge currents for improving EMI behavior
    • Individual diagnosis for:
      • Short circuit to battery
      • Open load
      • Short circuit to ground
    • Highly flexible overcurrent sensing implementation
      • Possibility of monitoring external MOS drain to source voltage
      • Possibility of monitoring voltage on external shunt resistor
      • 64 programmable overcurrent thresholds independent for each channel
      • Ultra-fast output shutdown in case of overcurrent
    • Current limitation for H-Bridge configuration
    • 32-bit SPI protocol available for configuration and diagnostics
      • Failures latched even if they occur during diagnostics reading
      • Daisy chain operation
      • SDO protected against overvoltage
    • Safety features
      • Fast switch off redundant output disable through two external pins
      • Built In Self Test (BIST) for logic operation
      • Hardware Self Check (HWSC) for VDD5 overvoltage comparator
      • Configurable Communication Check (CC) watchdog timer available
      • Disable feedback through bi-directional pin
      • Highly redundant output monitoring through dedicated SPI registers
    • 10-bit ADC for battery and die temperature measurements available through SPI
    • VDD5 monitoring for over/under voltage
    • VPS (battery) monitoring for under voltage

样片和购买

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L9945TR
批量生产
1000 4.5 TQFP 64 10x10x1.0 Tape And Reel - - EAR99
MORE INFO

Country of Origin:

MALAYSIA

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Distributor availability ofL9945TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 200 1 Order Now
MOUSER WORLDWIDE 835 1 Order Now

代理商库存报告日期: 2019-11-10

代理商名称

DIGIKEY

库存

200

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

835

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-11-10

立即购买
L9945
批量生产
1000 4.5 TQFP 64 10x10x1.0 Tray - - EAR99
MORE INFO

Country of Origin:

MALAYSIA

没有经销商,请联系我们的销售办事处

L9945TR

供货状态

批量生产

数量

1000

单价(US$)

4.5*

Distributor availability ofL9945TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 200 1 Order Now
MOUSER WORLDWIDE 835 1 Order Now

代理商库存报告日期: 2019-11-10

代理商名称

DIGIKEY

库存

200

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

835

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-11-10

单价(US$)

4.5

封装

TQFP 64 10x10x1.0

包装类型

Tape And Reel

Operating Temperature (°C)

(min)

-

(max)

-

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L9945

供货状态

批量生产

数量

1000

单价(US$)

4.5*

单价(US$)

4.5

封装

TQFP 64 10x10x1.0

包装类型

Tray

Operating Temperature (°C)

(min)

-

(max)

-

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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

评估工具

    • 产品型号

      Evaluation board for L9945 engine management system

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技术文档

    • 描述 版本 文档大小 操作
      DS12275
      Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems
      7.0
      1.52 MB
      PDF
      DS12275

      Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems

    • 描述 版本 文档大小 操作
      AN5074
      Charge pump stress estimation in switching applications
      1.0
      1.84 MB
      PDF
      AN5078
      Criteria for configuring L9945 diagnostic parameters in automotive switching applications
      1.1
      3.86 MB
      PDF
      AN5084
      How to improve EMI behavior in switching applications
      1.0
      4.69 MB
      PDF
      AN5402
      L9945 H-Bridge direction switching recommendations
      1.0
      966.89 KB
      PDF
      AN5311
      L9945 in H-bridge configuration
      1.2
      700.05 KB
      PDF
      AN5074

      Charge pump stress estimation in switching applications

      AN5078

      Criteria for configuring L9945 diagnostic parameters in automotive switching applications

      AN5084

      How to improve EMI behavior in switching applications

      AN5402

      L9945 H-Bridge direction switching recommendations

      AN5311

      L9945 in H-bridge configuration

产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
L9945
批量生产
TQFP 64 10x10x1.0 汽车 Ecopack2
L9945TR
批量生产
TQFP 64 10x10x1.0 汽车 Ecopack2

L9945

Package:

TQFP 64 10x10x1.0

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

TQFP 64 10x10x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9945TR

Package:

TQFP 64 10x10x1.0

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

TQFP 64 10x10x1.0

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.