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MAX15034

MAX15034

可配置的单/双路输出、同步buck控制器，支持大电流应用

双通道转换器，可配置为每路25A或单路50A输出

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概述

说明

MAX15034是双相、可配置的单路或双路输出buck控制器，输入电压范围为4.75V至5.5V或5V至28V。模式选择输入可将器件设置为双路输出电源，或将两相连接在一起构成单路输出、大电流电源。MAX15034的每一路输出通道可驱动n沟道MOSFET，并能提供大于25A的负载电流。MAX15034采用平均电流模式控制，每相的开关频率高达1MHz，两相之间呈180°错相工作模式。错相工作模式大大降低了双相、单路输出电压应用中的输入电容纹波电流和输出电压纹波。每路控制器都具有高性能的电流和电压误差放大器，可为实现最优的输出滤波器L-C取值和瞬态响应提供补偿。

MAX15034提供两路使能输入，具有精确的导通门限，可实现两路输出电压的排序。该器件的开关频率可通过外部电阻编程设置，范围为100kHz至1MHz。MAX15034可同步至外部时钟。每路输出电压在0.61V至5.5V范围内可调。此外，该器件还包括热关断和打嗝模式短路保护功能。在要求快速瞬态响应或精确调节输出电压的应用中，可采用带自适应电压定位的MAX15034。

MAX15034采用增强散热型28引脚TSSOP封装，能够耗散2.1W功率。器件工作在-40°C至+125°C汽车级温度范围。
MAX15034：原理框图 MAX15034：原理框图 放大+

关键特性

  • 4.75V至5.5V或5V至28V输入电压范围
  • 双路输出同步buck控制器
  • 可配置为两路独立输出(25A)或单路输出(50A)
  • 平均电流模式控制具有精确的可调限流
  • 180°错相工作模式减小了输入滤波电容的尺寸
  • 并联工作模式下，可限制反向吸入电流
  • 每路输出电压在0.61V至5.5V范围内可调
  • 独立的可编程自适应电压定位
  • 单调启动进入预偏置输出
  • 每路输出具有独立的关断
  • 每相开关频率可编程，范围为100kHz至1MHz
  • 振荡器频率可同步至200kHz至2MHz
  • 输出具有数字软启动
  • 打嗝模式过流保护
  • 过热关断
  • 增强散热型28引脚TSSOP封装，可耗散2.1W功率

应用

  • 图形卡
  • 高端机算计/工作站/服务器
  • 网络系统
  • 负载点大电流/高密度电信系统DC-DC调节器
  • RAID系统

参数规格

Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		Output Adjust. MethodIOUT1
(A)		Switch TypeDC-DC OutputsOper. Freq.
(kHz)		Package/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX15034 4.75280.615.5Resistor50External21000
TSSOP/28
$5.95 @1k
查看所有Step-Down Switching Regulators (404)
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。

设计资源


MAX15034BEVKIT: MAX15034B和MAX5066评估板

质量和环境数据

产品可靠性报告: MAX15034.pdf 
无铅封装的锡（Sn）晶须报告

质量与环境

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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    参考设计

    类型 编号 标题
    评估板6447MAX15034BEVKIT MAX15034B和MAX5066评估板