准谐振反激式控制器,带谷值锁定开关

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NCP1342是一款高度集成的准谐振反激式控制器,适用于设计高性能离线功率转换器。NCP1342具有集成的有源X2电容器放电功能,可以在无负载时实现低于30mW的功耗。

NCP1342专有的谷值锁定电路,确保稳定的谷值切换。此系统可在低至第 6 个谷值时运行,并转换为频率折返模式以降低开关损耗。随着负载进一步降低,NCP1342将进入静音Skip模式来管理功率输出,同时最大程度地降低噪声。

为了确保高频率设计的轻负载性能,NCP1342采用最小峰值电流调制(MPCM),以快速降低开关频率。为确保转换器的耐用性,NCP1342 具备多项关键的保护功能,如内部欠压检测、在任何输入电压下保证恒定最大输出功率的无功耗过功率保护(OPP)、通过专用引脚实现的锁存过压和NTC就绪过热保护,以及线路移除检测,可在拆除交流线路时对X2电容器进行安全放电。

  • 中高压AC-DC适配器
  • 超高密度AC-DC适配器
  • 支持USB PD
  • 笔记本电脑适配器
  • 平板电视SMPS
  • 计算机电源
  • 电话和平板的适配器
  • 用于快速频率折返(RFF)的最小峰值电流调制
  • QR频率抖动
  • 静音Skip技术
  • 带欠压保护的集成式高压启动
  • 带谷值锁定的谷值切换
  • 集成式X2电容器放电
  • NTC兼容的故障引脚
  • 高驱动能力:-500 mA / +800 mA
  • 锁存输入用于实现OVP和OTP

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NCP1342ADDCDAD1R2G

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NCP1342AMAACD1R2G

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NCP1342AMDADGD1R2G

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NCP1342AMDCCDR2G

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$0.4175

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NCP1342AMDCDAD1R2G

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NCP1342AMDCDD1R2G

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NCP1342AMDCDHD1R2G

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NCP1342ANACCED1R2G

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NCP1342ANACECD1R2G

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NCP1342ANACED1R2G

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NCP1342ANDAAD1R2G

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NCP1342ANDBDD1R2G

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NCP1342ANDCDAD1R2G

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NCP1342BKDCDAD1R2G

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NCP1342BMDCDAD1R2G

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NCP1342BMDCDD1R2G

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NCP1342BMDCDDD1R2G

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NCP1342DADBDD1R2G

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NCP1342DADBDGD1R2G

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NCP1342ENACEFD1R2G

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NCP1342ENDCEAD1R2G

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