Intersil’s ISL6336D multiphase controller

The ISL6336D is the newest addition to Intersil's multiphase controllers. The ISL6336D controller is designed to control voltage regulators by driving up to six interleaved synchronous-rectified buck channels in parallel. It has low ripple which requires fewer components, reduced power dissipation, smaller implementation area, and lower cost.

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 senses the output current continuously by utilizing patented techniques to measure the voltage across the dedicated current sense resistor or the DCR of the output inductor. Current sensing circuits also provide the needed signals for channel-current balancing, average overcurrent protection and individual phase current limiting. An NTC thermistor’s temperature is sensed via the TM pin and internally digitized for thermal monitoring and for integrated thermal compensation of the current sense elements.