单相全波电机驱动IC
品牌:晶致
电压:18V
最大电流:1.2A
工作温度:-40℃~105℃
封装:eTSSOP 14L
应用:风扇电机、显卡散热风扇、一般消费设备驱动12V风扇的最佳方案
Application Scenarios
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Product Description

芯片概述:

这是AM7228S在一般消费类设备驱动12V风扇方面的应用。

AM7228S最吸引人的功能是通过外接电阻进行斜率调节,可以满足大多数风机的要求。该集成电路采用软开关驱动、bicmos工艺,实现了静音驱动、低导通电阻、低功耗。这也包括锁保护和自动重启电路,不需要外部电容器。


备注:AM7228S与AM7228的区别在于:

停转点可调

AM7228S可调

AM7228不可调


Product Features

功能方框图:


图片
              



1) VH和VL引脚控制的斜率调整模式。

2) 软开关驱动器。

3) PWM速度控制。

4) 转速脉冲信号(FG)输出。

5) 包括锁定保护和自动重启电路。

6) 美国电力公司。

7) 霍尔偏置电压内置。

8) 内置软启动功能,降低通电噪音。

9) 停止模式占空比可调。