MAX15046A

40V、高性能、同步buck控制器

40V工业控制器,工作于1MHz


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说明

MAX15046同步降压控制器工作在4.5V至40V输入电压范围,输出电压可在85%的输入电压至0.6V范围内调节,支持高达25A的负载电流。器件允许单调启动至预置电压而不对输出放电,并具有自适应内部数字软启动功能。

MAX15046可通过外部电阻在100kHz至1MHz范围内调节开关频率。MAX15046的自适应同步整流无需外部续流的肖特基二极管。该器件利用外部低边MOSFET的导通电阻作为电流检测元件,省去了检流电阻。无需检流电阻即可在输出过载或输出短路故障下保护DC-DC元件不受损坏。“打嗝”式限流降低了短路条件下的功耗。MAX15046包括一个电源就绪输出和一个具有精确开启/关断门限的使能输入,用于输入电源监测和电源排序。

其它保护功能包括吸电流模式限流及热关断。当器件从输出吸收电流时,吸电流模式限流功能可防止反向电感电流达到危险值。

MAX15046A/MAX15046B具有软停止工作模式,MAX15046C中的软停止工作模式被禁用。

MAX15046采用16引脚QSOP或16引脚QSOP-EP封装,工作在-40°C至+125°C温度范围。
MAX15046:典型工作电路 MAX15046:典型工作电路 放大+

关键特性

  • 4.5V至40V或5V ±10%输入电压范围
  • 0.6V至(0.85 x VIN)可调输出
  • 可调开关频率(100kHz至1MHz),精度为±10% (1MHz)
  • 自适应内部数字软启动
  • 输出电流可达25A
  • 具有可调节温度补偿门限(30mV至300mV)的逐周期谷电流模式限流
  • 可单调启动至预置输出
  • ±1%精度的电压基准
  • 90%最大占空比(MAX15046C)
  • 3A峰值栅极驱动器
  • “打嗝”式短路保护
  • 热关断
  • 电源就绪(PGOOD)输出和带有±5%精度门限的使能输入(EN)
  • 增强散热的16引脚QSOP封装

应用

  • 基站
  • 工业电源(PLC、工业计算机、现场总线设备、现场总线连接器)
  • 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)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX15046 4.5400.636Resistor25ExternalYesYes11000EE-Sim
QSOP/16
$1.59 @1k
查看所有Step-Down Switching Regulators (388)
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。


MAX15046BEVKIT: MAX15046B评估板

技术资料

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

申请可靠性报告: MAX15046A 
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。

质量管理体系 >
环境管理体系 >

 
Status:
Package:
Temperature:

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