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Alpha, Omega Semiconductor Launches SmartClamp DrMOS for AI Servers and GPUs
May 1, 2026 | AlphaEstimated reading time: 2 minutes
Alpha and Omega Semiconductor Limited (AOS) a designer, developer, and global supplier of a broad range of discrete power devices, wide bandgap power devices, power management ICs, and modules, announced the launch of the SmartClamp™ family of protected DrMOS. Designed specifically for the extreme power demands of AI servers, data centers, and high-end graphics cards, the SmartClamp™ family offers high-accuracy Over Current Protection (OCP) and Negative Current Protection (NCP). The flagship AOZ53228QI provides a unique safeguard for multiphase voltage regulators (VRs), preventing catastrophic failures in environments where high peak currents are the norm.
In AI applications, peak workloads often push current levels beyond the physical limits of standard inductors and power stages. Traditional protection methods often suffer from delays; even a mere 50ns OCP delay can result in a 30A current runaway, risking permanent damage to the high-side MOSFET—especially when inductor saturation occurs.
The SmartClamp™ family eliminates this risk by implementing current limiting directly within the power stage rather than relying solely on the controller. Key technical highlights include:
- Cycle-by-Cycle Monitoring: Utilizes an internal rising-edge current ramp to monitor inductor current in real-time.
- Precision Protection: Delivers accurate positive and negative current limiting to handle high di/dt slew rates.
- Universal Compatibility: Optimized for industry-standard constant-on-time (COT) and fixed-frequency PWM controllers, as well as the company’s own proprietary AOS Advanced Transient Modulator (A2TM) multiphase controllers.
"AOS engineered the SmartClamp™ DrMOS family to address the specific 'stress tests' of modern AI workloads," said Zach Zhang, Power IC Marketing Director at AOS. "By pairing these with our advanced controllers—such as the OVR16, OVR4-22, and Intel IMVP/AMD SVI3 compatible series—we offer a seamless, high-efficiency Vcore solution that gives designers peace of mind in high-density power applications."
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