News Release | New Product：Ultra-compact, High current, Low loss PoL Power Inductor ‘CDK5838G series’
SAGAMI ELEC CO., LTD. is pleased to announce the development of the ultra-compact PoL power inductor "CDK5838G Series" (W5.8mm×D5.8mm×H3.8mm) for AI servers, data centers, edge computing devices, and high-performance automotive power supplies.
This product is a next-generation power inductor that significantly reduces AC losses through the adoption of new magnetic materials, delivering both high efficiency and lower heat generation.
In recent years, the rapid adoption of generative AI has driven a significant increase in the power consumption of AI accelerators, high-performance GPUs, and data center processors. PoL power supplies require not only high-current delivery capability but also highly efficient technologies that minimize power conversion losses and heat generation.
The "CDK5838G Series" significantly reduces AC losses in high-frequency operating ranges through the use of novel magnetic materials and an optimized magnetic design. This not only reduces heat generation within the inductor itself but also improves the overall conversion efficiency of the power supply circuit. As a result, the series is ideally suited for power supplies used in AI servers and large-scale data centers, where reducing cooling requirements and power consumption are critical challenges.
Furthermore, this series achieves approximately 1.4 times higher current density than conventional metal composite products. It enables greater current supply within limited mounting area and contributes to the miniaturization of next-generation PoL power modules for high-density application.
The 85nH model features a DC resistance (DCR) of 0.20mΩ Typ. and an allowable DC current of 70A. Despite its compact 5.8mm footprint, it offers both high current capability and excellent low-loss performance, providing greater flexibility in power supply design for high-performance processors.
SAGAMI ELEC will continue developing high-performance inductor products based on its proprietary material technologies to support the AI infrastructure and advanced electronic market, where high efficiency, energy savings, and miniaturization are increasingly required.
Main Applications
- PoL power supplies for AI servers and data centers, edge computing devices, and high-performance automotive power supplies
Features
- Significant reduction of AC losses through the adoption of new magnetic materials
- Reduced inductor heat generation and improved power conversion efficiency
- Ideal for PoL power supplies in AI servers and data centers
- Approximately 1.4 times higher current density than conventional metal composite products
- Ultra-compact size
- AEC-Q200 compliant
Electrical Characteristics
| Part Number | Inductance (nH) |
DCR (mΩ) max. | DC Saturation Allowable Current (A) | Temperature Rise Allowable Current (A) |
|---|---|---|---|---|
| CDK5838G-60NM | 60 ± 20% | 0.3 | 103.1 | 82.6 |
| CDK5838G-85NM | 85 ± 20% | 0.3 | 70 | 82.6 |
| CDK5838G-R12M | 120 ± 20% | 0.3 | 51.4 | 82.6 |
- Inductance Measuring Condition:100kHz,1V
- DC saturation allowable current:The current value which inductance decrease 30% from the initial value
- Temperature rise allowable current:The rise in temperature of core surface is 40℃
Inductance Adjustment Range: 60～120nH
※1: Please contact us regarding specifications for customized L values.
※2: Please feel free to contact us for other customization requests.
Dimensions
| A | B | C | D | E | F |
|---|---|---|---|---|---|
| 5.8 | 5.8 | 3.8 | 1.6 | (2.6) | 3.2 |
Unit: mm / Tolerance: ±0.2mm
Recommended Land Pattern
| Type | A | B | C |
|---|---|---|---|
| CDK5838G | 6.8 | 1.9 | 3.5 |
Unit: mm
Characteristic Graphs
60nH 85nH 120nH
Notes: Graphs are based on typical values of each type, not specific values.
Reference value comparison (Ferrite vs Metal)
| Part number | Inductance [nH]@100kHz |
DCR [mΩ] |
Isat [A] |
Rs (Reference value) [mΩ]@1MHz typ. |
High current density [A/mm²] |
|---|---|---|---|---|---|
| CDK5838G-85NM (Metal) |
85±20% | 0.20 typ. 0.30 max. |
70.9 (-30%) | 4.6 | 2.10 |
| CDG6250C□-90NM (Ferrite) |
90±15% or 20% | 0.25 typ. 0.38 max. |
63.0 (-20%) 64.0 (-30%) |
2.6 | 1.40 |
| A company (Ferrite) |
72±20% | 0.235±7% | 74.5 (-30%) | 8.8 | 1.48 |
Appearance and Volume
| CDK5838G | CDG6250C□ | A company |
|---|---|---|
| 5.8 × 5.8 × 3.8 | 6.8 × 6.7 × 5.0 | 7 × 7.15 × 5.0 |
| 127.9 mm³ | 227.8 mm³ | 250.25 mm³ |
Mounting Area
- A company
- CDG6250C□
- CDK5838G
| CDK5838G | CDG6250C□ | A company |
|---|---|---|
| 5.8 × 5.8 | 6.8 × 6.7 | 7 × 7.15 |
| 33.7 mm² | 45.6 mm² | 50.1 mm² |
CDK5838G CDG6250C□ A company
Features
- High current density: 2.1A/mm²
- Flexible design support →Customizable characteristics and size