LTM4642

推荐新设计使用

20VIN、双通道 4A 或单通道 8A DC/DC μModule 稳压器

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产品技术资料帮助

ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许，也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。
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产品详情

  • 小外形双通道 4A 电源
  • 宽输入电压范围：4.5V 至 20V (采用 CPWR 偏置时的最小值为 2.375V)
  • 具 4A DC 的双通道 180° 异相输出
  • 具 0.6V 至 5.5V 范围的双通道输出
  • 输出电压跟踪
  • ±1.5% 最大总 DC 输出电压误差
  • 高达 95% 的最大效率
  • 可锁相固定频率：600kHz 至 1.4MHz
  • 恒定导通时间、谷值电流模式架构
  • 并联均流
  • 可选的突发模式 (Burst Mode®) 操作
  • 输出过压和过流保护
  • 9mm x 11.25mm x 4.92mm BGA 封装
LTM4642
20VIN、双通道 4A 或单通道 8A DC/DC μModule 稳压器
Dual 4A 1V and 1.2V DC/DC μModule Regulator Efficiency vs Load Current at 12V input Product Package 1
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参考资料

数据手册 1

可靠性数据 1

用户手册 1

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硬件生态系统

部分模型 产品周期 描述
数字电源系统管理器 2
LTC2975
推荐新设计使用 具准确输入电流和能量测量功能的 4 通道 PMBus 电源系统管理器
LTC2970
推荐新设计使用 双通道 I2C 电源监视器和裕度调节控制器
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工具及仿真模型

LTspice 2

LTspice中提供以下器件型号：

  • LTM4642

LTpowerCAD 2

LTspice

LTspice®是一款强大高效的免费仿真软件、原理图采集和波形观测器，为改善模拟电路的仿真提供增强功能和模型。

LTpowerCAD

LTpowerCAD®是一种电源设计程序，它选择功率级元件，提供详细效率信息，显示快速环路波特图稳定性和负载瞬态分析，并可导出至LTspice进行仿真。

评估套件

eval board
schematic 1
schematic 2
schematic 3
schematic 4
DC2194A

LTM4642 Demo Board | Dual Buck μModule Regulator, 2.5V ≤ VIN ≤ 20VIN, VOUT1 = 1.8V @ 4A, VOUT2 = 1.2V @ 4A

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产品详情

Demonstration circuit of DC2194A features the LTM4642IY, the wide input voltage, high efficiency and power density, dual 4A or single 8A DC/DC step-down μModule regulator. The step-down regulator operates from an input voltage range of 4.5V to 20V (or 2.5V min. with 5V external bias voltage at CPWR) and provides an adjustable output voltage range from 0.6V to 5V at 4A load current per channel. The part is capable of operating in dual phase single output, delivers up to 8A load current with interleaved two phases at 180 degrees. Differential output voltage sensing is available on Channel 1 for applications requiring more accurate output load regulation. A user-selectable mode input is provided to allow users to trade off ripple noise for light load efficiency: Discontinuous Mode (DCM) of operation delivers higher efficiency at light load while Continuous Conduction Mode (CCM) is preferred for noise sensitive applications.


 
DC2194A
LTM4642 Demo Board | Dual Buck μModule Regulator, 2.5V ≤ VIN ≤ 20VIN, VOUT1 = 1.8V @ 4A, VOUT2 = 1.2V @ 4A
DC2194A Demo Board DC2194A Demo Board DC2194A Demo Board DC2194A Demo Board

参考电路

Stratix 10 GX PCIE FPGA Development Kit
Stratix 10 GX PCIE FPGA Development Kit
Stratix 10 GX PCIE FPGA Development Kit Block Diagram
Stratix 10 GX PCIE FPGA Development Kit (Recommended Simplified Power Tree: 12Vin to required I/O voltages)
Stratix 10 GX PCIE FPGA Development Kit (Actual Power Tree representative of components used on board)
Intel Stratix 10 FPGA PCIe Development Kit 参考设计

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特性和优点

  • Analog Devices has worked closely with Intel PSG to develop verified power solutions that optimize cost, size and efficiency in high performance applications.
  • The validated power solutions include uModules power products that address time and space constraints while delivering high efficiency, reliability, and low noise.
  • The actual power tree represents the best solution at time of design.
  • A recommended power tree has also been included to present the ideal solution at time of Stratix 10 GX PCIe development kit release. An updated alternate version of the power tree represents the latest solutions available from Analog Devices. For many applications, an intermediate rail is not ideal, so recommendations an alternate power tree that allow for direct power conversion from 12V input is provided below.
Intel Stratix 10 FPGA PCIe Development Kit
Stratix 10 GX PCIE FPGA Development Kit
Stratix 10 GX PCIE FPGA Development Kit Block Diagram
Stratix 10 GX PCIE FPGA Development Kit (Recommended Simplified Power Tree: 12Vin to required I/O voltages)
Stratix 10 GX PCIE FPGA Development Kit (Actual Power Tree representative of components used on board)

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