Description

The ISL6561CR is a multi-phase PWM controller designed for microprocessor core voltage regulation. It can drive up to 4 synchronous-rectified buck channels in parallel, using interleaved timing to multiply channel ripple frequency and reduce ripple currents. This results in lower component cost, reduced power dissipation, and a smaller implementation area. The ISL6561CR features a high bandwidth control loop and ripple frequencies of more than 4MHz, providing optimal response to load transients.

Specifications and features

• Precision multi-phase core voltage regulation
• Differential remote voltage sensing
• ±0.5% system accuracy over life, load, line, and temperature
• Adjustable reference-voltage offset
• Precision rDS(ON) or DCR current sensing
• Integrated programmable temperature compensation
• Accurate load-line programming
• Accurate channel-current balancing
• Differential current sense
• Low-cost, lossless current sensing
• Internal shunt regulator for 5V or 12V biasing
• Microprocessor voltage identification input
• Dynamic VID™ technology
• 6-Bit VID input
• Threshold-sensitive enable function for synchronizing with driver POR
• Overcurrent protection
• Overvoltage protection
• 2, 3, or 4 phase operation
• Greater than 1MHz operation (>4MHz ripple)
• Pb-free available (RoHS compliant)
• QFN package option
• QFN compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Product Outline
• QFN near chip scale package footprint; improves PCB efficiency, thinner in profile

Application Scenarios

The ISL6561CR is ideal for VR10.X applications that require precise multi-phase core voltage regulation and fast response to load transients. It can be used in various electronic devices and systems, including microprocessors, servers, gaming consoles, and high-performance computing applications.

Comparison

• High precision and accuracy in core voltage regulation
• Multiple phase operation for improved efficiency
• Fast response to load transients
• Integrated current sensing and temperature compensation
• Low-cost and compact design

• Requires additional external components for overvoltage protection
• May not be suitable for low-power applications
• QFN package may require specific handling during assembly