Multiphase controllers optimize mobile Vcore power

Three digital multiphase controllers from AOS enable Intel IMVP9.3 Vcore power delivery in high-performance mobile systems. When paired with the company’s DrMOS and Smart Power Stage devices, the AOZ71049QI, AOZ71149QI, and AOZ71146QI form a complete power solution for Intel Panther Lake and Wildcat Lake mobile processor architectures.

The buck controllers use AOS’s advanced transient modulation (A2TM), a hybrid approach that combines digital tuning with analog efficiency. By integrating variable-frequency hysteretic peak current-mode control with advanced phase current sensing, they deliver fast transient response and balanced current sharing across both transient and DC loads. They also maintain low quiescent power across all Intel IMVP9.3 power states, helping maximize battery life in laptops and notebooks. Key features are summarized below:

  • Flexible configurations: Up to 4+2+1+2 phase outputs for Core (IA), Graphics (GT), Auxiliary (SA), and LPCORE domains
  • Low quiescent current: 5.9 mA at PS0 in 3+2+1+1 configurations
  • Power management: Autonomous phase shedding and auto-DCM to reduce power loss
  • Compatibility: Supports industry-standard DrMOS and driver + MOSFET power stages from multiple vendors
  • Acoustic noise suppression: Integrated features reduce audible noise under dynamic load conditions

The AOZ71049QI, AOZ71149QI and AOZ71146QI are available in production volume, with a lead time of 12 to 16 weeks. Prices start at $2.66 in 1000-piece quantities.

Alpha & Omega Semiconductor 

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