DrMOS Popular Science: Efficient power management device, indispensable for AI servers
As the computing power of AI servers continues to increase, power management and heat dissipation pressures increase dramatically.DrMOS has become the core power supply device for AI servers.The recent DrMOS overheating problem occurred in NVIDIA GB300/B300 testing, which has attracted even more attention to this device.
1. What is DrMOS
DrMOS =
Driver + MOSFETThat is
Gate driver chip + high and low voltage MOS tubeIntegrated in the same package, the standard is defined by Intel and is specially designed for high current and high frequency power supply scenarios.
Integrated power module。
2. DrMOS core advantages
- High integration: Driver + MOS package, greatly reducing the number of components and PCB area
- High energy efficiency: Lower on-resistance and switching loss, improve conversion efficiency
- Quick response: Fast dynamic voltage regulation, adaptable to the instantaneous high current of CPU/GPU
- Better heat dissipation: The packaging structure facilitates heat dissipation and improves system stability.
3. Key performance indicators
- Power density: The output power per unit volume determines the level of miniaturization of the power supply.
- Conversion efficiency: Directly affects power consumption and heat generation
- Thermal properties: Junction temperature and thermal resistance determine reliability under high load
- switching speed: The faster, the lower the loss and the stronger the performance.
- protection function: Over-temperature OTP, over-voltage OVP, under-voltage UVLO, etc.
4. Market Structure and AI Server Hotspots
Main suppliers:MPS, TI, ADI, ON Semiconductor, Renesas, AOS, RichtekWait
- Global market size in 2021:$956 million
- Expected to reach:$1.122 billion，CAGR 3.24%
AI servers have become the strongest growth engine, but they also pose extreme challenges to DrMOS:
- NVIDIA GB300/B300 under test,AOS 5x5 DrMOS overheating
- If the problem cannot be resolved, it will be directed toMPS 5x6 DrMOSPlan
- The incident shows: Competition in the high-end AI server supply chain is fierce.Thermal performance is the core threshold
5. Development Trend
DrMOS is working towards:
Higher efficiency, lower loss, smaller package, higher heat resistance, higher power densityThe direction has been upgraded and continues to become a key component for AI servers, automotive electronics, and industrial power supplies.
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