MAX17480

2/3相输出电源控制器,用于AMD移动串行VID供电

单芯片电源管理方案,用于AMD的串行VID接口(SVI) CPU和北桥(NB)核电源


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说明

MAX17480为三输出、固定频率、降压控制器,为AMD的串行VID接口(SVI) CPU和北桥(NB)核供电。MAX17480包括2个用于CPU核的大电流SMPS和一个用于NB核的4A内部开关SMPS。用于CPU核的2个SMPS采用180°错相工作方式,实现真正的交错工作,最大程度地减小了输入电容。4A内部开关SMPS的工作频率是CPU核SMPS开关频率的两倍,减小了外部元件尺寸。

MAX17480完全符合AMD SVI规范要求。输出电压可通过2线SVI动态调整,允许SMPS独立设置为不同电压。摆率控制器能够实现VID码之间的受控转换以及受控的软启动。SVI还允许每个SMPS独立设置为低功耗跳脉冲状态。

瞬态相位重复功能提高了固定频率架构的响应性能,减小了CPU核的总输出电容。基于热敏电阻的温度传感器提供可编程的热故障输出(低电平有效VRHOT)。

MAX17480具有输出过压保护(OVP)、欠压保护(UVP)以及过热保护。当检测到任意上述故障时,控制器关断。真差分电流检测提高了限流和负载电压精度。MAX17480具有可调节的开关频率,为每个CPU核SMPS提供100kHz至600kHz的开关频率范围,而NB SMPS的工作频率是上述范围的两倍。
MAX17480:功能框图 MAX17480:功能框图 放大+

关键特性

  • 双输出、固定频率核电源控制器
    • 上电时可独立输出或组合输出
    • 动态相位选择优化了工作/休眠效率
    • 瞬态相位重复功能减小了输出电容
    • 真正的交错工作减小了输入电容
    • 可设置的交流和直流压降
    • 精确的电流平衡及电流限制
    • 集成驱动器用于驱动大电流同步整流MOSFET
    • 100kHz至600kHz可设置的开关频率
    • 4V至26V电池输入电压范围
  • 4A内部开关北桥SMPS
    • 2.7V至5.5V输入电压范围
    • 2倍可编程开关频率
    • 75mΩ/40mΩ功率开关
  • 在整个输入电压、负载和工作温度范围内具有±0.5%的VOUT精度
  • 符合AMD SVI规范的串行接口,带可切换的地址
  • 7位片内DAC:0至+1.550V可调节输出范围
  • 内置自举开关
  • 可调节的摆率控制
  • 电源就绪(PWRGD)和热故障(低电平有效VRHOT)输出
  • 系统电源就绪(PGD_IN)输入
  • 过压保护、欠压保护和热故障保护
  • 电压软启动和无源关断
  • 关断电流典型值< 1µA

应用

  • 移动AMD SVI核电源
  • 多相CPU核电源
  • 笔记本电脑/台式计算机
  • 电压定位,降压型转换器

请查看具体的参数规格 Step-Down Switching Regulators (409)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
IOUT1
(A)
(min)(max)(min)(max)
MAX17480 428020

Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

MAX17480EVKIT: MAX17480评估板
产品可靠性报告: MAX17480.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

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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类型 编号 标题
评估板6387MAX17480EVKIT MAX17480评估板