MAX15041

低成本、3A、4.5V至28V输入、350kHz PWM降压型DC-DC调节器,内置开关

内置开关的低成本、3A、DC-DC调节器,理想用于低功率电源


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说明

MAX15041是低成本、内置开关的同步DC-DC转换器,可提供高达3A的输出电流。MAX15041工作在4.5V至28V输入电压范围,提供0.606V至VIN的90%的可调输出电压,可由两个外部电阻设置。MAX15041理想用于分布式电源、预稳压、机顶盒、电视以及其它消费类电子应用。

MAX15041具有峰值电流模式PWM控制器,采用内部固定350kHz开关频率工作,且具有90%最大占空比。电流模式控制架构简化了补偿设计,并可保证逐周期限流,快速响应输入电源及负载瞬变。高增益跨导误差放大器允许使用II类补偿方案,便于外部补偿,可支持全陶瓷电容设计。

同步降压型调节器具有内部MOSFET,可提供比异步方案更高的效率;与分立式控制器方案相比大大简化了设计。为便于设计,采用内置MOSFET降低EMI并减小电路板尺寸,通过减少外部元件数量提供更高的可靠性。

MAX15041还具有热关断和过流保护功能(高边源出电流、低边吸入电流),带有欠压锁定功能的内置5V LDO。此外,该器件上电进入预置输出,确保安全启动。

其它特性包括外部可调的软启动,可逐渐增大至输出电压并减小浪涌电流。独立的使能控制和电源就绪信号允许灵活的电源排序。

MAX15041采用节省空间的大功率、3mm x 3mm、16引脚TQFN-EP封装,工作在-40°C至+85°C温度范围。
MAX15041:典型工作电路 MAX15041:典型工作电路 放大+

关键特性

  • 高达3A的连续输出电流
  • 工作温度范围内保持±1%输出精度
  • 4.5V至28V输入电压范围
  • 输出电压在0.606V至0.9 x VIN范围内调节
  • 内置170mΩ RDS-ON高边功率开关和105mΩ RDS-ON低边功率开关
  • 350kHz固定开关频率
  • 效率高达93%
  • 逐周期过流保护
  • 可编程软启动
  • 采用低ESR陶瓷输出电容保持稳定输出
  • 安全启动进入预置输出
  • 使能输入和电源就绪输出
  • 提供完整的过流和过热保护
  • VDD LDO欠压锁定
  • 节省空间、增强散热的3mm x 3mm封装

应用

  • 消费类产品
  • 分布式供电系统
  • 前置调节器
  • 机顶盒
  • 电视
  • 墙上适配器
  • xDSL调制解调器
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX15041 4.5280.625Resistor3InternalYes1350EE-Sim
TQFN/16
$2.98 @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。


MAX15041EVKIT: MAX15041评估板

技术资料

用户指南 5861 EE-SIM Design and Simulation Environment User Guide
参考原理图 5448 Kintex-7 Series Power Module
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: MAX15041.pdf 
无铅封装的锡(Sn)晶须报告

工具和模型

  • EE-Sim: MAX15041 设计和仿真
  • MAX15041 SIMPLIS Schematic
  • CAD Symbols and Footprints

  • MAX15041ETE+
  • MAX15041ETE+C90
  • MAX15041ETE+CGM
  • MAX15041ETE+T
  • MAX15041ETE+TC90
  • 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 >
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