功能描述:大量的保护和操作特性(速度,扭矩、方向、动态断路、PWM控制和闭环控制)使34931是一个非常有吸引力的,可控制的。用于控制大范围小直流的解决方案马达。34931输出能够支持峰值直流负载电流从28伏特VPWR源起至5.0 A。一个提供内装泵和门驱动电路能够支持外部PWM频率到11千赫。34931有一个模拟反馈(电流镜)输出pin (FB引脚),它提供了恒流源。与活跃的高侧MOSFETs电流有关。这可以用于提供输出电流的监控,方便电机转速/转矩控制的闭环操作开放载荷条件的检测。两个独立的输入,IN1和IN2,提供控制两个图腾杆半桥输出。两个独立的禁止输入,D1和EN/D2,提供强制H-bridge输出到高阻抗状态(全H-bridge)开关关闭)。EN/D2针也控制了一个enable。功能,使集成电路处于节能状态睡眠模式。34931有输出电流限制(通过常数关闭时间)。脉宽调制
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主营:电源管理IC、LED电源IC
品牌:TI ST Silergy 士兰微
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