يشاهد هذا المنتج الآن 20 عميل
NCP81611 is an electronic multiphase buck-converter controller IC (integrated circuit) used in power regulation circuits — especially in computers and graphics cards to provide stable CPU/GPU core voltages. 
📌 Key Description
• It’s a 4/3/2/1 phase multiphase synchronous buck controller with PWM_VID and I2C interface. 
• Designed to control multiple phases (up to 4) of DC-DC power stages for high-current loads. 
• Commonly used in GPU and CPU power delivery circuits on graphics cards, desktops, and notebook motherboards. 
⚙️ Technical Highlights
• Drives up to 4 power phases (balanced current distribution). 
• Supports PWM_VID (pulse-width modulation) voltage setting and I2C control for flexible regulation. 
• Wide supply range: ~2.8 V to 20 V. 
• Protections built-in: over-current, under-voltage, over-voltage, etc. 
• Usually comes in a 40-pin QFN package (~5×5 mm). 
🧰 Typical Use Cases
• GPU core voltage regulation on graphics cards (e.g., NVIDIA designs). 
• CPU or chipset core power regulation in desktops/notebooks. 
• High-performance power supplies requiring multiphase regulation. 
🧠 How It Works (Simplified)
The controller reads a PWM or I2C command to set the desired output voltage and then drives external MOSFETs in multiple phases to regulate that voltage efficiently with protections and current balancing.