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The RT9629B is a high frequency, triple-channel synchronous rectified buck MOSFET driver specifically designed to drive six power N-MOSFETs. The part is promoted to pair with Richtek's multiphase buck PWM controller family for high-density power supply implementation. The output drivers of RT9629B can efficiently switch power MOSFETs at frequency 300kHz typically. Operating in higher frequency should consider the thermal dissipation carefully. The device implements bootstrapping on the upper gate with only an external capacitor and a diode required. This reduces circuit complexity and allows the use of higher performance, cost effective N-MOSFETs. All drivers incorporate adaptive shoot-through protection to prevent upper and lower MOSFETs from conducting simultaneously and shorting the input supply. The RT9629B has also detected the fault condition during initial start-up before the multi-phase PWM controller takes control. As a result, the input supply will latch into the shutdown state. The RT9629B comes in a small footprint package with WQFN-24L 5x5 package.
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  • 可驱动 3 相 PWM 降压控制的 6 个 N-MOSFET
  • 击穿保护
  • 内嵌靴带式二极管
  • 支持高操作频率
  • 快速输出上升时间
  • Tri-State PWM Input for Output Shutdown
  • Small 24-Lead WQFN Package
  • 符合 RoHS 标准及不含卤素
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主板/桌面计算机微处理器核心电源 高频 DC-DC 转换器 大电流、低电压 DC-DC 转换器 GFX 卡核心电源供应
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