Controllers | NCV12711

车规级4-45Vin DC/DC峰值电流控制器

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NCV12711是一款固定频率、峰值电流模式PWM控制器，具有实施单端功率转换器拓扑结构所需的必要性能。这款器件工作电压范围4V至45V，无需辅助绕组，且位于热性能范围内。这款控制器包含一个可编程振荡器，能够在100kHz 至1MHz范围内工作，并集成斜坡补偿以防止次谐波振荡。控制器支持可编程软启动，输入电压支持欠压锁定（UVLO）保护以及过功率保护电路，会在输入电压提高时限制电路的总功率。UVLO引脚还被配有一个关断比较器，允许通过外部信号禁用开关，将控制器切换至低静态电流模式。配备板载运算放大器，能够实施初级侧稳压转换器或非隔离式DC-DC转换器。

  • 中低电压隔离式DC-DC
  • CCM和DCM反激式转换器

  • 用于电动汽车的单端反激/正激式转换器
  • 12V&24V汽车辅助供电单位

  • 宽输入范围（4–45V MSOP10封装）
  • 电流模式控制，集成斜坡补偿
  • 单电阻可编程振荡器
  • 带迟滞的输入电压UVLO
  • 1A拉电流/灌电流栅极驱动器
  • 多重故障保护：
    - 过功率保护
    - 过载保护，带30ms过载计时器
    - 兼容NTC的故障接口用于热保护
    - 输出过压保护（OVP）故障接口
    - 故障自动恢复模式，1s自动恢复期
  • 峰值电流和频率下的可调节软启动

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