MAX8566

高效率、10A、PWM降压型调节器,内置开关


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说明

MAX8566是高效开关调节器,能够以0.6V至(0.87 x VIN)的输出电压供应高达10A的负载电流。该器件采用2.3V至3.6V电源供电,非常适用于负载点应用。在整个负载、输入电源和温度范围内的总输出电压设置误差小于±1%。

MAX8566采用脉宽调制(PWM)模式,开关频率范围为250kHz至2.4MHz,开关频率大小可通过外部电阻进行设置。利用SYNC输入,该IC可被相同频率范围的外部时钟同步。高工作频率大大减小了外部元件尺寸。高边和低边开关采用低RDS(ON)的n沟道MOSFET,可在重载和高开关频率下保持高效率。

MAX8566采用带有高带宽(> 10MHz)误差放大器的电压模式控制架构。电压模式控制架构可使开关频率大于1MHz,实现全陶瓷电容设计,从而大大减小PCB面积。误差放大器采用第3类补偿方案,充分利用高开关频率的带宽实现快速瞬态响应。可调软启动时间允许设计者灵活控制启动时的输入浪涌电流。当输出达到其稳定点的90%时,开漏电源就绪(PWRGD)信号变为高电平。

MAX8566提供SYNCOUT输出,可用来同步第二个MAX8566或调节器的开关操作,使其与前者相位相差180°,这样可以减小输入纹波电流,从而降低输入电容要求。MAX8566还提供外部基准输入(REFIN),方便了输出跟踪应用。

MAX8566采用32引脚、5mm x 5mm TQFN封装。MAX8566与所有外部元件一起可安装在小于0.80in²的面积内。
MAX8566:典型工作电路 MAX8566:典型工作电路 放大+

关键特性

  • 内置导通电阻为8mΩ的MOSFET
  • 10A输出PWM降压调节器
  • 在整个负载、输入电源以及温度范围内具有±1%的输出精度
  • 工作于2.3V至3.6V输入电源
  • 0.6V至(0.87 x VIN)可调节输出
  • 250kHz至2.4MHz可调频率或SYNC输入
  • 允许全陶瓷电容设计
  • SYNCOUT驱动第二个调节器180°反相工作
  • 预偏置或单调软启动
  • 软启动时间可编程
  • 支持输出跟踪或排序
  • 即可源出也可吸入电流
  • 电源就绪输出
  • 32引脚TQFN封装
  • REFIN适合于DDR终端应用

应用

  • ASIC/CPU/DSP核电压
  • 基站电源
  • DDR电源
  • 光纤电源
  • 网络电源
  • POL电源
  • 电信电源
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX8566 2.33.60.63.1Resistor10InternalYesYes12400
TQFN/32
$5.88 @1k
查看所有Step-Down Switching Regulators (367)
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。


MAX8566EVKIT: MAX8566评估板

工具和模型

  • EE-Sim: MAX8566 设计和仿真
  • MAX8566 SIMPLIS Schematic
  • CAD Symbols and Footprints

  • MAX8566ETJ+
  • MAX8566ETJ+T
  • 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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