DATASHEET VR11.1, 4-Phase PWM Controller with Light-Load
Efficiency Enhancement and Load Current Monitoring
Features
ISL6334, ISL6334A
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. Features 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. Precision multiphase core voltage regulation
-Differential remote voltage sensing
-В±0.5% Closed-loop system accuracy over load, line and
temperature
-Bi-directional, adjustable reference-voltage offset The ISL6334, ISL6334A is designed to be completely
compliant with Intel VR11.1 specifications. It accurately …