L9911B

更新时间： 2024-02-12 04:56:10

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		电动机控制电机 LTE 局域网
页数	文件大小	规格书
15页	188K
描述
CAR ALTERNATOR MULTIFUNCTION SMART VOLTAGE REGULATOR

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

L9911B 技术参数

生命周期：	Active	零件包装代码：	MODULE
包装说明：	ROHS COMPLIANT, MULTIWATT-8	针数：	8
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.56
模拟集成电路 - 其他类型：	BRUSH DC MOTOR CONTROLLER	JESD-30 代码：	R-XSFM-T8
JESD-609代码：	e3	湿度敏感等级：	3
功能数量：	1	端子数量：	8
封装主体材料：	UNSPECIFIED	封装等效代码：	SIP8,.1TB
封装形状：	RECTANGULAR	封装形式：	FLANGE MOUNT
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	7/18 V
认证状态：	Not Qualified	子类别：	Automotive Circuits
最大供电电压 (Vsup)：	18 V	最小供电电压 (Vsup)：	7 V
标称供电电压 (Vsup)：	12.5 V	表面贴装：	NO
端子面层：	Matte Tin (Sn)	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	SINGLE
处于峰值回流温度下的最长时间：	NOT SPECIFIED	Base Number Matches：	1

L9911B 数据手册

L9911

CAR ALTERNATOR MULTIFUNCTION SMART VOLTAGE

REGULATOR

PRELIMINARY DATA

1 Features

Figure 1. Package

■ FULLY MONOLITHIC DESIGN

■ HIGH SIDE FIELD DRIVER

■ THERMAL PROTECTION

■ FIELD SHORT CIRCUIT PROTECTION

■ PROTECTED DIAGNOSTIC LAMP DRIVER

■ PROTECTED HIGH SIDE RELAY DRIVER

■ COMPLEX DIAGNOSTICS

Multiwatt8

■ LOAD RESPONSE CONTROL

■ DFM OUTPUT (FIELD MONITOR)

Table 1. Order Codes

Part Number

L9911A

Package

Features

See Table.9

Multiwatt8

2 Description

L9911B

The L9911 is a monolithic multifunction alternator

voltage regulator intended for use in automotive

application. It includes the control section, the field

power stage, fault diagnostic circuit which drives a

warning lamp, and the protection against short cir-

cuits.

ance so high to cause a superimposed ripple on

the alternator voltage higher than 5-6V. Conse-

quently it doesn't need, in the standard applica-

tion, any external component. Anyway an external

capacitor (2.2µF) must be inserted between A+

and ground when using the device with very long

cables.

3 Circuit Operation

The alternator's voltage regulator performs the fol-

lowing main functions:

3.2 PROTECTION

– 1) voltage regulation

– 2) protection

It is present a protection against short circuits of

the lamp and the relay power drivers (L) and of the

field power driver (F+), a thermal drivers shutdown

protection and an overvoltage protection of L pow-

er drivers.

– 3) control fault diagnosis

– 4) load response control

3.1 VOLTAGE REGULATION

3.3 DIAGNOSIS

The alternator voltage is compared with a refer-

ence voltage in an amplifier, whose output deter-

mines the switching frequency of output power

MOS whose current excites the coil of the alterna-

tor; as the regulator is in fixed-frequency topology,

the field switching frequency does not depend on

the alternator characteristics. The regulators have

an integrated filter in the voltage sensing path

guaranteeing the correct behaviour of the devices

also when the rectifier diodes feature very high

switching spikes. The internal filtering allows the

usage of the device also with very long cables con-

necting the alternator to the battery with an imped-

The circuit detects fault conditions related to the

phase and F+ status and receives informations

from one of the three alternator phases. In order to

prevent spurious indications, fault warnings are

not displayed immediately but are dalayed by a

fixed time.

3.4 LOAD RESPONSE CONTROL

The internal circuit regulates the soft start charac-

teristics (activated always at engine start) and the

soft attack characteristics.

Rev. 3

1/15

November 2005

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

12 3 4 5 6 7...15

下载PDF

与L9911B相关器件

型号	品牌	描述	获取价格	数据表
L9911F	STMICROELECTRONICS	Multifunction Smart Regulator with Lamp/Relay Diagnostic Driver	获取价格
L9911I	STMICROELECTRONICS	Car alternator multifunction smart voltage regulator	获取价格
L9911K	STMICROELECTRONICS	Multifunction Smart Regulator with Lamp/Relay Diagnostic Driver	获取价格
L9911P	STMICROELECTRONICS	暂无描述	获取价格
L9911U	STMICROELECTRONICS	Multifunction Smart Regulator with Lamp/Relay Diagnostic Driver	获取价格
L9911V	STMICROELECTRONICS	Car alternator multifunction smart voltage regulator	获取价格

产品中心

服务支持

精选活动

关于我们

帮助中心

L9911B

L9911B 技术参数

L9911B 数据手册

与L9911B相关器件

与L9911B相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

L9911B

L9911B 技术参数

L9911B 数据手册

与L9911B相关器件

与L9911B相关文章

您还可以找

您在本页遇到什么问题？