具有负载响应控制的交流发电机稳压器

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产品概述

描述

The L9409 is a monolithic multifunction alternator voltage regulator intended for use in automotive applications.

The device regulates the output of an automotive generator by controlling the field winding current by means of either an analog fixed frequency PWM signal or digital fixed frequency PWM signal (LRC). The Load Response Control function is activated in order to eliminate IC engine speed fluctuation and vibrations caused by the insertion of sudden electrical loads during alternator low speed operations (f < 310 Hz). Both the analog and digital duty cycle are applied to a high side driver.

The device is able to regulate the voltage either using a feedback signal from B pin or from S pin depending on application needs. S pin is intended to have a clear direct connection with the positive terminal of the car battery. If this connection gets lost the device will regulate voltage using B pin giving a fail safe functionality.

Using L pin is possible to sense key switch and a pre-excitation duty cycle is applied on the field coil in order to start phase voltage sensing. In the case L connection gets lost, device starts to generate using residual magnetism of the generator.

Field, lamp and relay drivers are protected against short circuit.

  • 所有功能

    • IC regulator for 12 V type alternator
    • Fixed frequency regulation loop
    • 130 mΩ high side field driver
    • Fail safe device with double sensing of battery voltage (VB and VS)
    • Load response control (LRC) function activates after an initial time delay
    • Self start function from phase frequency
    • “Z” shaped regulation curve compliant with VW specification.
    • Key recognition from L input
    • Field driver, lamp driver and relay driver short protection
    • Complex diagnostics
    • Thermal shutdown at 175 °C

EDA符号、封装和3D模型

STMicroelectronics - L9409

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符号

Footprints

封装

3D model

3D模型

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**
L9409F
NRND
MW 8L 汽车应用 Ecopack1

L9409F

Package:

MW 8L

Material Declaration**:

Marketing Status

NRND

Package

MW 8L

Grade

Automotive

RoHS Compliance Grade

Ecopack1

(**) 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
Order from distributors
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Country of Origin
Budgetary Price (US$)*/Qty
最小值
最大值
L9409F Available at distributors

经销商的可用性 L9409F

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:

无法联系到经销商,请联系我们的销售办事处
NRND
EAR99 NEC Tube MW 8L -40 150 MOROCCO

L9409F NRND

封装:
MW 8L
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L9409F

ECCN (EU):

NEC

包装类型:

Tube

Operating Temperature (°C)

Min:

-40

Max:

150

Country of Origin:

MOROCCO

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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