各位SFF社区的朋友们，大家好！我来自法国。和你们中的许多人一样，过去两个月我一直在计划组装一台高性能的扁平式ITX主机，主板是华硕ROG STRIX B860-I，处理器是英特尔Ultra 7 265。虽然定制的木质面板机箱已经基本成型，但我遇到了SFF主机最大的难题：笨重的24针ATX电源线。
现在是 2026 年，埃隆·马斯克正在推动汽车采用 48V 架构以减轻重量和节省空间，而我们的 PC 行业仍然停留在几十年前设计的 24 根电线的捆绑式架构中。
问题：
看看我目前的装机方案，内部空间几乎被一堆黑色线缆占据了。这不仅影响美观，还会造成散热隐患，阻碍空气流通，甚至导致顶盖无法完全闭合。在扁平机箱里，根本没有空间隐藏这么多铜线。
愿景：48V DC-ATX 革命
我认为Mini-ITX的未来在于48V生态系统。我的目标是设计一款定制的集成电源板，将高压直流输入与直插式DC-ATX外形尺寸相结合。
拟采用的技术栈：
我已经组装好了核心硬件。目前我正在等一个从德国寄来的19.5V适配器才能启动它，因为法国似乎缺少专业的电子元件。不过，这只是暂时的。
我向社区提出的问题：
MOD EDIT:
Hello everyone in the SFF community! I'm from France. Like many of you, I've been planning to build a high-performance flat-panel ITX PC for the past two months, using an ASUS ROG STRIX B860-I motherboard and an Intel Ultra 7 265 processor. While the custom wood-panel case is mostly complete, I've run into the biggest hurdle for SFF PCs: the bulky 24-pin ATX power cable.
It's 2026, and Elon Musk is pushing for 48V architecture in the automotive industry to reduce weight and save space, while our PC industry is still stuck in the decades-old design of bundled 24-pin power cables.
The Problem:
Look at my current build; the internal space is almost entirely filled with a bunch of black cables. This not only affects aesthetics but also creates heat dissipation problems, obstructs airflow, and even prevents the top cover from closing completely. There's simply no space to hide so many copper wires in a flat-panel case.
Vision: The 48V DC-ATX Revolution
I believe the future of Mini-ITX lies in the 48V ecosystem. My goal is to design a custom integrated power board that combines high-voltage DC input with a through-hole DC-ATX form factor.
Proposed Technology Stack:
Input: 48V DC via a GaN power adapter (borrowed from professional audio or industrial applications).
System Core: Hynetek 48V buck modules. These chips are highly efficient and compact, capable of stepping 48V down to a stable 12V with minimal heat generation.
Form Factor: Through-hole DC-ATX motherboard (similar to a Pico-PSU), mounted directly on a 24-pin connector without any internal 24-pin cables.
Why 48V?
Lower Current: 300W of power requires approximately 16A at 19V, which is almost at the limit of a 7.4mm connector. At 48V, we only need about 6A, resulting in a cooler and safer system operation.
Ultra-thin design: By moving the main conversion to a small Hynetek-based module on the motherboard, we can reclaim enough vertical space for a more efficient heatsink or a slimmer chassis.
Efficiency: High-voltage transmission significantly reduces I^2R losses.
Current situation and challenges:
I have assembled the core hardware. I am currently waiting for a 19.5V adapter to arrive from Germany to get it running, as there seems to be a shortage of specialized electronics in France. However, this is only temporary.
Questions for the community:
Has anyone successfully integrated a Hynetek 48V module into a PC power supply system?
Are there existing PCB designs that support 48V to 12V to ATX conversion in a single through-hole module?
What EMC/EMI issues need to be considered when placing a high-frequency buck converter close to RAM and CPU?
I plan to use 3D printing to create a spacer for my chassis to address the temporary height issue, but the long-term goal is to customize a 48V integrated circuit board. I would love to collaborate with anyone interested in developing a prototype of this “Tesla-style” PC power supply architecture!
现在是 2026 年，埃隆·马斯克正在推动汽车采用 48V 架构以减轻重量和节省空间，而我们的 PC 行业仍然停留在几十年前设计的 24 根电线的捆绑式架构中。
问题：
看看我目前的装机方案，内部空间几乎被一堆黑色线缆占据了。这不仅影响美观，还会造成散热隐患，阻碍空气流通，甚至导致顶盖无法完全闭合。在扁平机箱里，根本没有空间隐藏这么多铜线。
愿景：48V DC-ATX 革命
我认为Mini-ITX的未来在于48V生态系统。我的目标是设计一款定制的集成电源板，将高压直流输入与直插式DC-ATX外形尺寸相结合。
拟采用的技术栈：
- 输入：48V 直流，通过 GaN 电源适配器（借鉴自专业音频或工业领域）。
- 系统核心：Hynetek 48V降压模块。这些芯片效率极高且体积小巧，能够将48V电压降至稳定的12V，且发热量极低。
- 外形尺寸：直接插入式 DC-ATX 主板（类似于 Pico-PSU），直接安装在 24 针接头上，无需任何内部 24 针电缆。
- 更低电流：300W 功率在 19V 电压下需要约 16A 电流，这几乎达到了 7.4mm 连接器的极限。而在 48V 电压下，我们只需要约 6A 电流，从而使系统运行更凉爽、更安全。
- 超薄设计：通过将主要转换移至主板上基于 Hynetek 的小型模块，我们可以回收足够的垂直空间，以便使用更高效的散热器或更纤薄的机箱。
- 效率：高压输电可显著降低$I^2R$损耗。
我已经组装好了核心硬件。目前我正在等一个从德国寄来的19.5V适配器才能启动它，因为法国似乎缺少专业的电子元件。不过，这只是暂时的。
我向社区提出的问题：
- 有没有人成功地将Hynetek 48V模块集成到PC供电系统中？
- 是否存在支持在单个直插模块中实现48V 转 12V 转 ATX转换的现有 PCB 设计？
- 将高频降压转换器放置在靠近 RAM 和 CPU 的位置时，需要考虑哪些 EMC/EMI 问题？
MOD EDIT:
Hello everyone in the SFF community! I'm from France. Like many of you, I've been planning to build a high-performance flat-panel ITX PC for the past two months, using an ASUS ROG STRIX B860-I motherboard and an Intel Ultra 7 265 processor. While the custom wood-panel case is mostly complete, I've run into the biggest hurdle for SFF PCs: the bulky 24-pin ATX power cable.
It's 2026, and Elon Musk is pushing for 48V architecture in the automotive industry to reduce weight and save space, while our PC industry is still stuck in the decades-old design of bundled 24-pin power cables.
The Problem:
Look at my current build; the internal space is almost entirely filled with a bunch of black cables. This not only affects aesthetics but also creates heat dissipation problems, obstructs airflow, and even prevents the top cover from closing completely. There's simply no space to hide so many copper wires in a flat-panel case.
Vision: The 48V DC-ATX Revolution
I believe the future of Mini-ITX lies in the 48V ecosystem. My goal is to design a custom integrated power board that combines high-voltage DC input with a through-hole DC-ATX form factor.
Proposed Technology Stack:
Input: 48V DC via a GaN power adapter (borrowed from professional audio or industrial applications).
System Core: Hynetek 48V buck modules. These chips are highly efficient and compact, capable of stepping 48V down to a stable 12V with minimal heat generation.
Form Factor: Through-hole DC-ATX motherboard (similar to a Pico-PSU), mounted directly on a 24-pin connector without any internal 24-pin cables.
Why 48V?
Lower Current: 300W of power requires approximately 16A at 19V, which is almost at the limit of a 7.4mm connector. At 48V, we only need about 6A, resulting in a cooler and safer system operation.
Ultra-thin design: By moving the main conversion to a small Hynetek-based module on the motherboard, we can reclaim enough vertical space for a more efficient heatsink or a slimmer chassis.
Efficiency: High-voltage transmission significantly reduces I^2R losses.
Current situation and challenges:
I have assembled the core hardware. I am currently waiting for a 19.5V adapter to arrive from Germany to get it running, as there seems to be a shortage of specialized electronics in France. However, this is only temporary.
Questions for the community:
Has anyone successfully integrated a Hynetek 48V module into a PC power supply system?
Are there existing PCB designs that support 48V to 12V to ATX conversion in a single through-hole module?
What EMC/EMI issues need to be considered when placing a high-frequency buck converter close to RAM and CPU?
I plan to use 3D printing to create a spacer for my chassis to address the temporary height issue, but the long-term goal is to customize a 48V integrated circuit board. I would love to collaborate with anyone interested in developing a prototype of this “Tesla-style” PC power supply architecture!
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