Demonstration circuit 2481A-B is a high efficiency, high density, μModule^® regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V, and it can supply 186A maximum load current. The demo board has 1× LTM4677 and 3× LTM4650 μModule regulators. The LTM4677 is a dual 18A or single 36A step-down regulator with PMBus power system management, and the LTM4650 is a dual 25A or single 50A step-down regulator. Please see LTM4677 and LTM4650 data sheets for more detailed information.

Demonstration circuit 2479A-A features the LTM4650EY, the high efficiency, high density, dual 25A, single 50A switch mode step-down power module regulator. The input voltage is from 4.5V to 15V. The output voltage is programmable from 0.6V to 1.8V. DC2479A-A is configured as dual-phase, single-output, which can deliver up to 50A maximum. The board designs with minimum components to demonstrate this high efficiency, high density μModule. As explained in the data sheet, output current de-rating is necessary for certain V_IN, V_OUT, and thermal conditions. These features and the availability of the LTM4650EY in a compact 16mm × 16mm × 5.01mm BGA package make it ideal for use in many high-density point-of-load applications. The LTM4650 data sheet must be read in conjunction with this demo manual for working on or modifying the demo circuit DC2479A-A.

Demonstration circuit DC2378A-A features the LTM4650EY, the high efficiency, high density, dual 25A, single 50A, switch mode step-down power module regulator. The input voltage is from 4.5V to 15V. The output voltage is programmable from 0.6V to 1.8V. DC2378A-A can deliver 25A maximum current from each channel. As explained in the data sheet, output current derating is necessary for certain V_IN, V_OUT, and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE jumper (JP1) selects pulse-skipping mode for noise sensitive applications or Burst Mode^® operation in less noise sensitive applications. Two outputs can be connected in parallel for a single 50A output solution with optional jumper resistors.

演示电路 2481B-A 是一款高效率、高密度、μModule^® 稳压器，具有 4.5V 至 15V 输入电压范围。输出电压可在 0.6V 至 1.8V 范围内调整，并可提供最大 86A 负载电流。该演示板具有 1 个 LTM4677 和 1 个 LTM4650 μModule 稳压器。LTM4677 是一款具有 PMBus 电源系统管理功能的双通道 18A 或单通道 36A 降压型稳压器，而 LTM4650 是一款双通道 25A 或单通道 50A 降压稳压器。有关更多详细信息，请参见 LTM4677 和 LTM4650 数据手册。

DC2481BDC2481B-A 上电至默认设置并基于配置电阻产生电源，无需任何串行总线通信。这样可轻松评估 DC/DC 转换器。为了充分发掘该器件丰富的电源系统管理功能，请将 GUI 软件 LTpowerPlay^® 下载到 PC 上并使用 ADI 公司的 I²C/SMBus/PMBus 加密狗 DC1613A 连接到该板。LTpowerPlay 允许用户重新配置联机器件，将配置存储在 EEPROM 中，并查看电压、电流、温度和故障状态的遥测功能。

有关 LTpowerPlay 的更多详细信息和说明，请参阅 LTpowerPlay 软件 GUI。

Demonstration circuit 2481A-A is a high efficiency, high density, μModule^® regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V, and it can supply 86A maximum load current. The demo board has 1× LTM4677 and 1× LTM4650 μModule regulators. The LTM4677 is a dual 18A or single 36A step-down regulator with PMBus power system management, and the LTM4650 is a dual 25A or single 50A step-down regulator. Please see LTM4677 and LTM4650 data sheets for more detailed information.