VR11.1, 4-Phase PWM Controller with Light Load Efficiency Enhancement and Load Current Monitoring Features
The ISL6334, ISL6334A control microprocessor core voltage regulation by driving up to 4 interleaved synchronous-rectified buck channels in parallel. This multiphase architecture results
in multiplying channel ripple frequency and reducing input and output ripple currents. Lower ripple results in fewer components, lower cost, reduced power dissipation, and smaller implementation area.
Microprocessor loads can generate load transients with extremely fast edge rates and requires high efficiency at light load. The ISL6334, ISL6334A utilizes Intersil’s proprietary Active Pulse Positioning (APP), Adaptive Phase Alignment (APA) modulation scheme, active phase adding and
dropping to achieve and maintain the extremely fast transient response with fewer output capacitors and high efficiency from light to full load.
Features
• Intel VR11.1 Compliant
• Proprietary Active Pulse Positioning (APP) and Adaptive Phase Alignment (APA) Modulation Scheme
• Proprietary Active Phase Adding and Dropping with Diode Emulation Scheme For High Light Load Efficiency
• Precision Multiphase Core Voltage Regulation
\- Differential Remote Voltage Sensing
\- ±0.5% Closed-loop System Accuracy Over Load, Line and Temperature
