ISL6556BCRR5148

Special Purpose Regulators Overview

The ISL6556BCRR5148 is a switching controller designed for Intel VR10.X applications, manufactured by Renesas Electronics (formerly Intersil). It controls microprocessor core voltage regulation by driving up to four synchronous-rectified buck channels in parallel. The device utilizes rDS(ON) current sensing for adaptive voltage positioning and overcurrent protection. Key electrical parameters include an output voltage range of 837.5 mV to 1.6 V, a maximum output current capability of 120 A, and a switch frequency adjustable from 80 kHz to 1.5 MHz. The component operates within a temperature range of 0°C to +70°C and is housed in a 32-QFN package.

Special Purpose Regulators Feature Summary

• Supports multiphase buck converter architecture with interleaved timing to reduce input and output ripple currents
• Utilizes rDS(ON) current sensing for adaptive voltage positioning, channel current balancing, and overcurrent protection
• Compatible with external NTC compensation circuits to nullify temperature effects on droop accuracy

Special Purpose Regulators Applications

• Microprocessor core voltage regulation
• Intel VR10.X application designs
• Multiphase PWM controller implementations

Special Purpose Regulators Procurement Notes

Verify the specific suffix 'R5148' against official Renesas documentation, as standard listings typically use suffixes like 'CRZA'. Confirm end-of-life status and moisture sensitivity level requirements before procurement. Ensure compatibility with existing PCB footprints and thermal management strategies for the QFN package.

Special Purpose Regulators Selection Notes

Select this component for high-current processor power delivery requiring precise voltage positioning. Consider the adjustable switching frequency range for optimizing efficiency versus component size. Verify that the control mode and current sensing method align with the target synchronous rectifier MOSFET characteristics.

Special Purpose Regulators Part Context

This part belongs to the ISL6556B series of optimized multiphase PWM controllers. The series is specifically engineered for next-generation microprocessor power stages, offering integrated features to simplify design while maintaining high performance and reliability for demanding computing applications.

Special Purpose Regulators Replacement Considerations

Consult official substitution lists for equivalent VRM controllers. Verify pinout compatibility and electrical specifications if considering alternative manufacturers or updated revisions within the same product family.