L9915B中文资料C-terminal alternator voltage regulator (CTAVR)数据手册ST规格书

描述 Description

L9915B is a monolithic 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 circuits.
This device regulates in close loop the output of an automotive generator by controlling the field winding current by means of a pulse-width modulation (PWM) high side driver at fixed frequency.
The set-point voltage reference selected by the Engine Control Unit via C-terminal protocol is temperature flat. An internal voltage reference thermally compensated is present in the device and used when the protocol coming from ECU is absent or the wire is broken.
A self-bias circuitry is present on L pin in order to turn-on the warning lamp also when the device is not supplied (battery connection broken).

特性 Features

• Fully monolithic design
• High side field driver
• Field short circuit protection
• Regulated voltage driven by ECU (protocol driven)
• Regulated voltage thermally compensated (without protocol)
• Lamp driver (wake up and warning detection)
• Self start function
• Load response control (LRC)
• Field monitor (FM) output
• Thermal shutdown

简介

L9915B属于集成电路（IC）的电源管理-专用。由制造生产的L9915B电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。