会社ブログについて Mingjiada Supplies Delta V36SE Series DC/DC Power Modules: AI Servers

As the power density per rack in AI servers has risen from the traditional 5–10 kW to tens or even hundreds of kilowatts, the 48V bus power supply architecture has become the mainstream choice for data centers. The 48V voltage must be stepped down to 12V, 5V, or 3.3V via high-performance isolated DC/DC modules to power GPU peripheral circuits, network chips, optical modules, and board-level point-of-load components. Delta’s V36SE series is a 1/16-brick isolated module specifically designed for this application. With a wide input voltage range of 18–75 V, efficiency up to 91%, and compact dimensions of 33.0 × 22.8 × 9.3 mm, it plays a critical role in the “bus-to-point” power conversion within the distributed power supply design of AI server boards.

I. Complete Model List and Core Specifications of the V36SE Series

The V36SE belongs to Delta’s Delphi series of 1/16-brick DC/DC power modules. The base models cover three output voltages—3.3V, 5V, and 12V—with power ratings centered around 50W. Complete part numbers consist of a “base model + suffix,” where the suffix codes denote subtle differences in package type, pin configuration, packaging method, and electrical options. Currently available complete part numbers include:

3.3V Output

V36SE3R315NRFA: 18–75V input, 3.3V/15A, 50W, 90.5% efficiency @ 48 Vin, 2250V isolation, 1/16-brick

5V Output

V36SE05010NRFA: 18–75V input, 5V/10A, 50W, 91% efficiency @ 48 Vin, 2250V isolation, 1/16-brick

12V Output

V36SE12004NRFA: 18–75 V input, 12 V/4.2 A, 50 W, 88% efficiency @ 48 V input, 2250 V isolation, 1/16-brick

V36SE12005NRFA: 18–75 V input, 12 V/5 A, 60 W, 88% efficiency, 1/16-brick

All of the above models comply with industry-standard 1/16-brick packaging and pinout. They feature built-in input under-voltage lockout (UVLO), output overcurrent protection (OCP), overvoltage protection (OVP), and over-temperature protection (OTP), support remote on/ off, and output voltage fine-tuning. They feature 2250V isolation and are certified to IEC/EN/UL/CSA 62368-1 safety standards. For board-level point-of-load applications in AI servers where space is limited but tolerance for input voltage fluctuations is low, the V36SE’s wide-voltage input capability allows it to support both 48V communication bus and 24V industrial bus scenarios, reducing additional selection costs caused by differences in bus voltage standards.

II. The V36SE’s Role in the AI Server Power Supply Chain

AI server power supply architectures are typically divided into three levels: AC/DC or HVDC rectification, 48V intermediate bus conversion, and board-level load-point step-down. The V36SE operates at the “48V intermediate bus → board-level low voltage” level. Unlike non-isolated modules designed for high-power 48V-to-12V intermediate bus applications—which deliver outputs ranging from hundreds of watts to kilowatts and support PMBus digital monitoring—the V36SE is positioned to provide compact, reliable voltage conversion with a 50W-class isolated output within an extremely small 1/16-brick footprint. It serves as a front-end power supply for optical modules, network switch chips, BMCs, auxiliary power rails, or distributed POLs.

In AI servers, power delivery to GPU cores and HBM is typically handled by vertical power delivery or high-current non-isolated POLs, whereas the V36SE’s value lies primarily in “high-reliability peripheral point-of-load” and “intermediate-level pre-regulation.” For example, under a 48V input, the V36SE3R315NRFA delivers 3.3V/15A with a full-load efficiency of 90.5%, enabling it to directly power PCIe peripheral circuits, management controllers, or low-speed I/O interfaces that require a 3.3V supply, while its 2250V isolation provides a fundamental insulation barrier between the primary and secondary sides, meeting the isolation level requirements for server safety design. When the input voltage fluctuates within the 18–36V range, the output capacity of this model is derated to 40W (12A); this characteristic actually provides an additional safety margin for derating in the auxiliary power rails of AI servers.

III. Mingjiada’s V36SE Supply Capability

Shenzhen Mingjiada Electronics Co., Ltd. has established an OEM channel and a system of readily available stock for Delta power modules. Common models in the V36SE series, such as the V36SE3R315NRFA, V36SE05010NRFA, and V36SE12004NRFA, are included in the stock inventory. For sample verification during the R&D phase and bulk supply during mass production, Mingjiada offers tiered supply support ranging from single samples to bulk pallets. The standard delivery cycle for regular orders is 1–3 days; for urgent requests, the company offers 4-hour warehouse pickup and 24-hour domestic shipping, along with DDP global logistics support.

In addition to the V36SE modules themselves, Mingjiada can simultaneously supply peripheral components such as power management ICs, reducing the need for fragmented procurement of parts for the entire system’s BOM. All Delta modules are procured through official original manufacturer channels and support batch traceability. The company has obtained ISO 9001 quality management system certification and maintains branches in Shenzhen, Hong Kong, Japan, Russia, and Taiwan, enabling localized order fulfillment for AI server system integrators and telecommunications equipment manufacturers.

IV. Quick Selection Guide and Contact Information

If your design prioritizes 50W-class power, wide-voltage input, and minimal board space, the V36SE is the direct choice within Delta’s 1/16-brick product line; if the load power falls within the 200–300W range and requires greater thermal headroom, you should consider the Q48SE (1/4-brick) series; For the 60–85W range requiring a slim, 1/8-brick form factor, the E48SR series is a better fit.

Mingjiada Electronics Procurement Contact:

Contact: Mr. Chen

Mobile / WeChat: +86 13410018555

Email: sales@hkmjd.com

Phone: 86-755-83294757

Address: Rooms 1239–1241, New Asia Guoli Building, Zhenzhong Road, Futian District, Shenzhen, Guangdong Province

Website: www.integrated-ic.com

To confirm real-time inventory and batch information for specific, complete model numbers such as V36SE3R315NRFA, V36SE05010NRFA, V36SE12004NRFA, and V36SE12005NRFA, please contact the Mingjiada sales team directly for quotes and delivery schedules.