DATASHEET VR11.1, 6-Phase PWM Controller with Phase Dropping,
Droop Disabled and Load Current Monitoring Features
ISL6336D Features The ISL6336D controls voltage regulators by driving up to 6
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. Intel VR11.1 compliant with droop disabled The ISL6336D 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.
The ISL6336D is designed to be completely compliant with
Intel VR11.1 specifications with exception of droop disabled. It
accurately reports the load current via the IMON pin to the
microprocessor, which sends an active low PSI# signal to the
controller at low power mode. The controller then enters 1-or
2-phase operation option to reduce magnetic core and
switching losses, yielding high efficiency at light load. After the
PSI# signal is deasserted, the dropped phase(s) are added
back to sustain heavy load transient response and efficiency.
The ISL6336D senses the output current continuously by …