斜率可调PWM风扇马达驱动芯片PWM Fan Motor Driver with Slope Control CXMD3267是一款用于无刷直流风扇马达驱动的芯片，它集成了三种转速控制模式，换相软切换，锁定保护，霍尔偏置，转速反馈，低功耗待机，快速启动以及过温保护等功能。CXMD3267不仅能够驱动具有不同转速曲线要求的风扇，并能满足笔记本电脑等便携式设备所要求的静音和低功耗特性

   产品概述 返回TOPHpE嘉泰姆

       CXMD3267是一款用于无刷直流风扇马达驱动的芯片，它集成了三种转速控制模式，换相软切换，锁定保护，霍尔偏置，转速反馈，低功耗待机，快速启动以及过温保护等功能。CXMD3267不仅能够驱动具有不同转速曲线要求的风扇，并能满足笔记本电脑等便携式设备所要求的静音和低功耗特性。CXMD3267三种转速控制模式分别是PWM模式，VCC加斜率可调模式，VCC控制模式。换相软切换使风扇换相噪声更低，抖动更小。如果马达被外部应力或者障碍物卡住，则过驱动电流可能会引起温度升高而损坏马达。为了防止此类现象，当马达锁死后，锁定保护电路将关断内部功率管，切断马达驱动电流。几秒钟后自动重启电路将尝试重新打开功率管恢复马达驱动。CXMD3267具有霍尔芯片偏置输出，转速反馈输出功能。同时，CXMD3267具有低功耗待机和快速启动，待机功耗极小，并且任何时候只要取消待机，风扇均可立即启动。CXMD3267 is a fan motor driver for brushless DC fan motor. It integrates three types speed control modes soft switched output, lock protection, Hall bias, FG output, shutdown mode, quick restart and TSD. With these modes and functions, CXMD3267 can not only be applied to DC fans which require different speed curves, but also be applied to NB and other portable equipments which require silence and low power dissipation. The three types speed control modes are PWM control mode, VCC control mode with slope adjustable, normal VCC control mode. Soft switched output drives DC fan in low noise and low vibration. If a DC fan is stalled by the external force or obstacles, overdrive current may incur coil overheat and burning. To prevent motor from overheating, the lock protection circuit shuts down the internal power devices for a few seconds after the motor lock is detected. Then the auto restart circuit resumes to power up the internal power devices. CXMD3267 has built in Hall IC bias output, motor rotation speed feedback (FG). With its shutdown mode and quick restart, CXMD3267 consumes little power dissipation during shutdown time and can be started at once regardless of lock detection time.

   产品特点 返回TOPHpE嘉泰姆

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• 单相全波驱动HpE嘉泰姆

• 三种转速控制模式</p>

PWM模式HpE嘉泰姆

VCC加斜率可调模式</p>

VCC控制模式HpE嘉泰姆

• 换相软切换</p>

• 锁定保护和自动重启</p>

• 低功耗待机（PWM为低）及快速启动</p>

• 转速反馈</p>

• 霍尔偏置HpE嘉泰姆

• 热关断保护</p>

• UDFN-10和MSOP-10封装HpE嘉泰姆

• 无铅、无卤</p>

Single-Phase Full-Wave Driver SystemHpE嘉泰姆

Three Speed Control ModeHpE嘉泰姆

PWM Control ModeHpE嘉泰姆

VCC Control Mode with Slope AdjustableHpE嘉泰姆

Normal VCC Control ModeHpE嘉泰姆

Soft Switched Drive for Silent ApplicationHpE嘉泰姆

Lock Detection and Automatic RestartHpE嘉泰姆

Shutdown Mode and Quick RestartHpE嘉泰姆

Low Standby Current (PWM = L)HpE嘉泰姆

FG OutputHpE嘉泰姆

Hall Bias OutputHpE嘉泰姆

Thermal Shutdown ProtectionHpE嘉泰姆

Available in UDFN-10 and MSOP-10 PackageHpE嘉泰姆

RoHS Compliant and 100% Lead (Pb)-FreeHpE嘉泰姆

Halogen-FreeHpE嘉泰姆

   应用范围 返回TOPHpE嘉泰姆

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• 笔记本散热风扇, 静音风扇HpE嘉泰姆

NB Cooling FanHpE嘉泰姆

Silent Fan MotorHpE嘉泰姆

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