AOS Launches Digital Multiphase Controllers for Intel Next-Generation Mobile Platforms

Alpha and Omega Semiconductor Limited (AOS) (Nasdaq: AOSL), a designer, developer, and global supplier of a broad range of discrete power devices, wide-bandgap power devices, power management ICs, and modules, announced a new family of digital multiphase controllers: the AOZ71049QI, AOZ71149QI and AOZ71146QI. Specifically engineered for Intel IMVP9.3 Vcore power delivery, these 4-rail controllers—when paired with AOS’s benchmark DrMOS and Smart Power Stage (SPS) technology—provide a complete power solution for the latest Intel Panther Lake and Wildcat Lake mobile processor architectures.

The Hybrid Advantage: Digital Tuning, Analogue Efficiency

The AOZ71049QI series utilises the proprietary AOS Advanced Transient Modulation (A²TM). This technology bridges the gap between digital flexibility and analogue efficiency, combining variable-frequency hysteretic peak-current mode control with advanced phase-current sensing. This results in ultra-fast transient response and optimal current balance across both transient and DC loads. A key differentiator is the exceptionally low quiescent power consumption across all Intel IMVP 9.3 power states. By reducing power waste, the solution maximises battery longevity in next-generation laptops and notebooks.

Simplified Design and Superior Thermals

To streamline the development cycle, configurations can be programmed directly into the controller’s Multi-Time Programmable Memory (MTP) via a user-friendly GUI. This eliminates the need for manual solder rework during the tuning phase and reduces the overall bill of materials (BOM).

The solution reaches peak performance when paired with the AOZ52986QI Smart Power Stage (SPS). Featuring a compact 3x4 QFN package and a symmetrical pinout, the AOZ52986QI simplifies PCB layout while reducing parasitic inductance by 5%.

“The biggest hurdle for SoC power in mobile applications is balancing performance with power consumption,” said Wayne Lee, Power IC Product Marketing Director at AOS. “Our AOZ71049 series provides a novel control scheme that meets Intel’s most stringent requirements while delivering the lowest quiescent power in the industry. For the end user, this translates to 30 to 60 minutes of additional battery life compared to competing solutions.”

Technical Highlights

AOZ71049QI / AOZ71149QI / AOZ71146QI Multiphase Controllers

• Flexible Configurations: Up to 4+2+1+2 phase outputs to support Core (IA), Graphics (GT), Auxiliary (SA), and LPCORE domains.
• Ultra-Low Quiescent Current: Only 5.9mA at PS0 for 3+2+1+1 configurations.
• Intelligent Management: Autonomous phase shedding and auto-DCM to optimise power loss.
• Universal Compatibility: Supports multi-sourced industry-standard DrMOS or driver+MOSFET power stages.
• Acoustic Noise Suppression: Built-in features to ensure silent operation under varying loads.

AOZ52986QI Smart Power Stage (SPS)

• Rugged Performance: 2.7V to 22V supply range with 30V HS MOSFET for enhanced system reliability.
• High Current Density: Supports 45A continuous output (up to 80A peak).
• Precision Monitoring: Integrated current (3.5% accuracy) and temperature (2% accuracy) monitoring.
• Space Efficient: Optimised for switching frequencies up to 1.5MHz, enabling smaller external components.

Pricing and Availability

The AOZ71049QI, AOZ71146QI, and AOZ71149QI are available in production quantities with a lead time of 12-16 weeks. The unit price in 1,000-piece quantities is $2.7 for the AOZ71049QI, $2.66 for the AOZ71146QI, and $2.75 for the AOZ71149QI. The AOZ52986QI is immediately available in production quantities, with a lead time of 16-18 weeks. The unit price in 1,000-piece quantities is $1.5.