MAX15039

6A、2MHz、降压型调节器,内置开关

尺寸最小、效率最高、3A降压调节器,开关频率高达2MHz


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说明

MAX15039是一款高效开关调节器,输出电压范围为0.6V至VIN的90%,可提供高达6A的负载电流。器件工作电压为2.9V至5.5V,非常适合负载点和后续稳压应用。在整个负载、输入电压和温度变化范围内,器件输出电压总误差低于±1%。

MAX15039采用固定频率PWM工作模式,开关频率可通过外部电阻设置在500kHz至2MHz范围。MAX15039提供可选的跳脉冲模式工作,以提高轻载效率。高工作频率允许全陶瓷电容设计,同时也允许采用小尺寸外部元件。

片内低导通电阻nMOS开关保证在较重负载下提供高效率,并使电感值最小。相对于分立元件方案,该器件的电路布局要简单得多。简单的电路布局和引脚配置保证器件在新设计中的一次通过率。

MAX15039内部集成了宽带(28MHz)电压误差放大器。电压模式控制结构和误差放大器允许使用III类补偿方案,使环路最大带宽达到开关频率的20%。较宽的环路带宽能够保证快速瞬态响应,从而减小所需的输出电容,允许全陶瓷电容设计。

MAX15039具有两个三态逻辑输入,用于选择9种不同的输出电压。这些预设输出电压为客户提供±1%的输出电压精度,无需使用昂贵的0.1%精密电阻。另外,可以通过连接在反馈端的两个外部电阻,配合0.6V内部基准或REFIN输入端施加的外部基准,将输出电压设置到用户需要的任何数值。MAX15039通过外部电容编程软启动时间,以减少输入浪涌电流。
MAX15039:典型工作电路 MAX15039:典型工作电路 放大+

关键特性

  • 内置26mΩ RDS(ON)高端和20mΩ RDS(ON)低端MOSFET
  • 整个温度范围内可支持6A连续电流输出
  • 在整个负载、输入电压和温度范围内提供±1%的输出精度
  • 工作于2.9V至5.5V VIN电压
  • 输出电压在0.6V至(0.9 x VIN)之间可调
  • 软启动抑制输入浪涌电流
  • 500kHz至2MHz可调开关频率
  • 能够使用陶瓷、聚合物以及电解输出电容
  • 9种可选择预设电压以及可调输出电压
    • 0.6V、0.7V、0.8V、1.0V、1.2V、1.5V、1.8V、2.0V、2.5V和可调
  • 单调上升支持安全启动进入预偏置输出状态
  • 可选择强制PWM或用于轻载的跳脉冲模式
  • 过流和过热保护
  • 输出具有吸入/源出电流能力,逐周期保护
  • 漏极开路电源就绪输出
  • 24引脚、4mm x 4mm薄型QFN无铅封装

应用

  • ASIC/CPU/DSP核与I/O供电
  • 基站电源
  • DDR电源
  • POL
  • RAID控制电源
  • 服务器电源
  • 电信与网络电源
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX15039 2.95.50.64.5
Digital/VID
Dyn. REF In
Resistor
6InternalYesYes12000EE-Sim
TQFN/24
$4.68 @1k
查看所有Step-Down Switching Regulators (389)
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。


MAX15038EVKIT: MAX15038和MAX15039评估板
MAX15039EVKIT: MAX15039评估板

技术资料

用户指南 5861 EE-SIM Design and Simulation Environment User Guide
设计指南 5133 Power-Supply Solutions for Altera FPGAs
设计指南 5132 Power-Supply Solutions for Xilinx FPGAs

质量和环境数据

产品可靠性报告: MAX15039.pdf 
无铅封装的锡(Sn)晶须报告

工具和模型

  • EE-Sim: MAX15039 设计和仿真
  • MAX15039 SIMPLIS Schematic
  • 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。

    质量管理体系 >
    环境管理体系 >

     
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