L9942

批量生产
Design Win

双极电机的步进电机驱动器,具有微步进可编程电流曲线

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产品概述

描述

The L9942 is an integrated stepper motor driver for bipolar stepper motors with microstepping and programmable current profile look-up-table to allow a flexible adaptation of the stepper motor characteristics and intended operating conditions. It is possible to use different current profiles depending on target criteria: audible noise, vibrations, rotation speed or torque. The decay mode used in PWM-current control circuit can be programmed to slow-, fast-, mixed-and auto-decay. In autodecay mode device will use slow decay mode if the current for the next step will increase and the fast decay or mixed decay mode if the current will decrease. The programmable stall detection is useful in case of head lamp leveling and bending light application, by preventing to run the motor too long time in stall for position alignment. If a stall is detected, the alignment process is closed and the noise is minimized.

  • 所有功能

    • Two full bridges for max. 1.3 A load(RDSON= 500 mΩ)
    • Programmable current waveform with look-up table: 9 entries with 5 bit resolution
    • Current regulation by integrated PWM controller and internal current sensing
    • Programmable stepping mode: full, half, mini and microstepping
    • Programmable slew rate for EMC and power dissipation optimization
    • Programmable Fast-, Slow-, Mixed- and Auto-Decay Mode
    • Full-scale current programmable with 3 bit resolution
    • Programmable stall detection
    • Step clock input for reduced μController requirements
    • Very low current consumption in standby mode IS< 3 μA, typ. Tj≤ 85 °C
    • All outputs short circuit protected with openload, overload current, temperature warning and thermal shutdown
    • The PWM signal of the internal PWM controller is available as digital output.
    • All parameters are guaranteed for 3 V < Vcc < 5.3 V and for 7 V < Vs < 20 V

电路原理图

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EDA符号、封装和3D模型

STMicroelectronics - L9942

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质量与可靠性

产品型号 Marketing Status 等级规格 符合RoHS级别 材料声明**
L9942XP1
批量生产
PowerSSO 24 汽车应用 Ecopack2
L9942XP1TR
批量生产
PowerSSO 24 汽车应用 Ecopack2

L9942XP1

Package:

PowerSSO 24

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

PowerSSO 24

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9942XP1TR

Package:

PowerSSO 24

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

PowerSSO 24

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) 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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产品型号
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包装类型
RoHS
Country of Origin
ECCN (US)
ECCN (EU)
L9942XP1TR
Available at distributors

经销商的可用性 L9942XP1TR

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L9942XP1
Available at distributors

经销商的可用性 L9942XP1

代理商名称
地区 库存 最小订购量 第三方链接

代理商库存报告日期:

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L9942XP1TR 批量生产

Budgetary Price (US$)*/Qty:
-
包:
包装类型:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

产品型号:

L9942XP1TR

代理商名称

代理商库存报告日期:

L9942XP1 批量生产

Budgetary Price (US$)*/Qty:
-
包:
包装类型:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

产品型号:

L9942XP1

代理商名称

代理商库存报告日期:

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(*) 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