MAX17409

单相Quick-PWM GPU控制器

单相降压型控制器


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说明

MAX17409为单相Quick-PWM™降压型VID电源控制器,用于高性能图形处理器供电。Quick-PWM控制技术可快速响应负载电流阶跃。有源电压定位降低了功耗以及对输出电容的要求,并可对钽电容、聚合物电容或陶瓷电容等大尺寸输出电容进行理想的电压定位补偿。

MAX17409提供两种不同类型的笔记本电脑处理器核供电方案:直接由电池降压或从+5V系统电源降压,产生核电压。一次转换方式下器件直接对高压电池组进行降压,可获得极高效率;二次转换方案(对+5V系统电源而非电池电压进行降压)能够工作在更高的开关频率,使系统具有尽可能小的物理尺寸。

摆率控制支持VID码之间的受控转换。利用热敏电阻温度传感器提供可编程的热保护。MAX17409采用28引脚、4mm x 4mm TQFN封装。
MAX17409:引脚配置 MAX17409:引脚配置 放大+

关键特性

  • 单相Quick-PWM控制器
  • 在整个输入电压、负载、工作温度范围内保持±6mV VOUT精度
  • 6位图形DAC (12.5mV LSB)
  • 可调增益有源电压定位
  • 精确的电压下降检测门限和电流门限
  • 远端输出和地回路检测
  • 2V缓冲基准输出提供偏移量调节
  • 电源就绪窗比较器
  • 温度比较器
  • 驱动大功率同步整流FET
  • 2V至26V电源输入范围
  • 可调节开关频率(最大值为600kHz)
  • 输出过压和欠压保护
  • 软启动和软关断
  • 内置自举二极管

应用

  • 2至4节Li+电池至处理器核电源转换器
  • 图形处理器核(GPU)电源
  • 笔记本/台式机/服务器
  • 电压定位降压型转换器

MAX17409EVKIT: MAX17409评估板

质量和环境数据

申请可靠性报告: MAX17409 
无铅封装的锡(Sn)晶须报告
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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