L9352B

批量生产
Design Win

4通道气门驱动器

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产品概述

描述

The L9352B is designed to drive inductive loads in low side configurations like hydraulic valves used in ABS/ESC systems.

Integrated active Zener diodes clamp (for channel1 and 2) or free wheeling diodes (for channel 3 and 4) allow the recirculation of the inductive loads.

All four channels are monitored with a status output. All wiring to the loads and supply pins of the device are controlled. The device is selfprotected against short circuit at the outputs and overtemperature. For each channel, one independent push-pull status output is used for a parallel diagnostic function.

Channel 3 and 4 work as current controlled channels. The target value of the current is given by the duty cycle (DC) of the 2 kHz PWM input signal.

The output current is controlled through the output PWM of the power stage. The regulator limits of 10% or 90% are detected and monitored with the status signal. The current is measured during the recirculation phase of the load.

Using an external clock frequency of 250 kHz, the PWM output frequancy is 3.9 kHz.

A digital PI (proportional and integrating) regulator is performed in order to internally control the target current basing on the load current measurements.

  • 所有功能

    • Regulator error control
    • Regulator drift detection
    • Electrostatic discharge (ESD) protection
    • External clock control
    • Ground and supply loss detection
    • Four low-side output driver with protection diagnostics.2 channels designed as conventional switch (rON = 0.2 typ.) with integrated 60 V Zener diodes clamp.2 current controlled channels (rON = 0.2 typ.) with current range from 0 mA to 2.25 A typ. with integrated recirculation diodes.
    • Short circuit protection
    • Output slope control
    • Open load and over load current detection
    • Recirculation path control
    • Selective overtemperature shutdown

电路原理图

EDA符号、封装和3D模型

STMicroelectronics - L9352B

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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**
L9352B-LF
批量生产
PowerSO 36 汽车应用 Ecopack2
L9352B-TR-LF
批量生产
PowerSO 36 汽车应用 Ecopack2

L9352B-LF

Package:

PowerSO 36

Material Declaration**:

PDF

Marketing Status

批量生产

Package

PowerSO 36

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9352B-TR-LF

Package:

PowerSO 36

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

PowerSO 36

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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L9352B-TR-LF
Available at distributors

经销商的可用性 L9352B-TR-LF

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L9352B-LF
Available at distributors

经销商的可用性 L9352B-LF

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代理商库存报告日期:

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L9352B-TR-LF 批量生产

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Country of Origin:
ECCN (US):
ECCN (EU):

产品型号:

L9352B-TR-LF

Operating Temperature (°C)

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Max:

代理商名称

代理商库存报告日期:

L9352B-LF 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:

L9352B-LF

Operating Temperature (°C)

Min:

Max:

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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