LTM4638

该评估板已停产且不再推荐使用。替代板为DC2665B-B。

演示电路 2665A-B 采用 LTM4638 µModule^® 稳压器，后者是高性能、高效率降压型稳压器。LTM4638 是一款完整的 DC/DC 负载点稳压器，采用耐热性能增强型 6.25mm × 6.25mm × 5.02mm BGA 封装。LTM4638 的工作输入电压范围为 3.1V 至 20V，能够提供高达 15A 的输出电流。输出电压可在 0.6V 至 5.5V 范围内编程，并可远端采样。堆叠式电感器设计可改善散热性能，并显著地缩减封装面积。通过 TRACK/SS 引脚可提供输出电压跟踪功能，用于进行电源轨排序。通过 SYNC/MODE 引脚可实现外部时钟同步。如欲在低负载电流下实现高效率，在对噪声不太敏感的应用中采用 MODE 跳线 (JP7) 选择 DCM 模式操作。在处理或修改 DC2665A-B 时，必须结合本演示手册阅读 LTM4638 数据手册。

演示电路 2665B-B 采用 LTM4638 μModule^® 稳压器，这是一款高性能、高效降压型稳压器。LTM4638 是一款完整的 DC/DC 负载点稳压器，采用耐热性能增强型 6.25mm × 6.25mm × 5.02mm BGA 封装。LTM4638 的工作输入电压范围为 3.1V 至 20V，能够提供高达 15A 的输出电流。输出电压可在 0.6V 至 5.5V 范围内编程，并可以远程检测。堆叠式电感器设计可改善散热性能，并显著降低封装面积。TRACK/SS 引脚提供输出电压跟踪，用于电源轨时序监控。通过 SYNC/MODE 引脚可以进行外部时钟同步。要在低负载电流下实现高效率，可以在噪声敏感度较低的应用中使用 MODE 跳线 (JP7) 选择不连续电流模式 (DCM) 操作。要处理或修改 DC2665B-B，请结合本演示手册阅读 LTM4638 数据手册。

• 电流模式控制
  • 良好的电流共享
• 外部频率同步
• 差分远程检测

EVAL-LTM4638-AZ 评估板是一个电源，可从 3.1V 至 20V 输入产生 1V、60A（最大值）。它是一款四路 PolyPhase® 解决方案，采用了高性能、高效率降压型稳压器 LTM®4638。LTM4638 是一款完整的 DC/DC 负载点 (POL) 稳压器，采用耐热性能增强型 6.25mm × 6.25mm × 5.02mm BGA 封装。

EVAL-LTM4638-AZ 在默认频率 600kHz 下进行优化，电流模式控制架构可轻松实现均流。LTM4638 默认以连续导通模式 (CCM) 运行，但在轻负载下，可置于脉冲跳跃模式 (PSM) 以优化效率。

EVAL-LTM4638-AZ 中包含一个外部时钟 IC LTC6902，用于提供时钟同步信号，使四个通道以 90° 的相位差交错，从而减少均方根 (RMS) 输入电流纹波和输出电压纹波。此解决方案还包含 LT3088 ，用于为时钟 IC 供电。

LTM4638 数据手册提供了完整的套件、运行和应用信息说明。在使用或修改 EVAL-LTM4638-AZ 之前，必须结合本评估板用户指南阅读数据表。

The HTG-937 provides access to large FPGA gate density and 8GB/16GB of high bandwidth memory. It is populated with the Xilinx Zynq Virtex Ultrascale VU37P, or VU47P. Analog Devices power solution on this platform is fully validated to meet the requirements of Xilinx Zynq Virtex Ultrascale FPGAs to ensure a robust power delivery solution.

DC/DC μModule regulators are used on the HTG-937 to power Xilinx FPGA and/or SoC rails as well as other system rails. These regulators are highly integrated solutions with built in controller, power FETs, inductors, and capacitors that simplify layout and provide robust power delivery performance.

We provide supporting documentation including power schematics, layout, LTpowerPlanner and applicable LTpowerPlay configuration files to enable you to validate the power solution for your application seamlessly.

• Xilinx Versal^™ AI Core and Prime series solves a broad range of industry-specific problems with performance and flexibility. Core use cases  include storage acceleration,  data center network acceleration, 5G xHaul and Passive optical networks.


• The HTG-VSL1 AI Core and Prime PCIe express platform allows easy and versatile functional expansion through two Vita 57.4 compliant High-Pin-Count  FMC+ ports and one high-speed AcceleRate^® port.


• Analog Devices, Inc. supports power delivery solutions for the HTG-VSL1 for the Versal AI Core and Versal Prime PCIe express platform. DC/DC μModule regulators are used on the HTG-VSL1 to power Xilinx FPGA and/or SoC rails as well as other system rails. These regulators are highly integrated solutions with built in controller, power FETs, inductors, and capacitors that simplify layout and provide robust power delivery performance.


• ADI provides supporting documentation including power schematics, layout, LTpowerPlanner^® and applicable LTpowerPlay^® configuration files to enable you to validate the power solution for your application seamlessly.


• For a complete list power designs and use cases, please contact your local FAE.


• Key Power DC DC Modules include:
• LTM4700 is a Dual 50A or Single 100A μModule Regulator with Digital Power System Management, PMBus
• LTM4638 is a 15A Step-Down DC/DC μModule Regulator
• LTM4625 is a 5A Step-Down DC/DC μModule Regulator
• LTM4632 is a Triple Output, Step-Down μModule Regulator for DDR-QDR4 Memory
• LTC2937 is a Programmable Six Channel Sequencer and Voltage Supervisor with EEPROM

• 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.

• 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 SI 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 for an alternate power tree that allows for direct power conversion from 12V input is provided below.