ISL6522CVZ

DC DC Switching Controllers Overview

The ISL6522CVZ is a Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller manufactured by Renesas Electronics Corporation. Designed for high-performance microprocessor applications, it drives two N-Channel MOSFETs in a synchronous rectified buck topology. The device integrates control, output adjustment, monitoring, and protection functions. It features a free-running triangle-wave oscillator adjustable from below 50kHz to over 1MHz, with a default frequency of 200kHz. The error amplifier provides a 15MHz gain-bandwidth product and 6V/µs slew rate for fast transient response. Output voltage regulation is precise down to 0.8V with ±1% tolerance. It operates within a supply voltage range of 10.8V to 13.2V and supports an operating temperature range of 0°C to +70°C.

DC DC Switching Controllers Feature Summary

• Integrates complete control and protection for DC-DC converters optimized for high-performance microprocessors
• Drives two N-Channel MOSFETs in a synchronous rectified buck topology without requiring external current sensing resistors
• Features a 15MHz gain-bandwidth error amplifier enabling high converter bandwidth and fast transient performance
• Monitors current using the rDS(ON) of the upper MOSFET to inhibit PWM operation during overcurrent conditions

DC DC Switching Controllers Applications

• Power supply for Pentium, Pentium Pro, PowerPC, and AlphaPC microprocessors
• High-power 5V to 3xV DC-DC regulators
• Low-voltage distributed power supplies

DC DC Switching Controllers Procurement Notes

Verify component authenticity through authorized channels as availability may be limited. Confirm package integrity and moisture sensitivity level handling requirements prior to assembly. Cross-reference datasheet revisions to ensure compatibility with existing design specifications. Validate thermal performance under actual load conditions given the specific operating temperature range constraints.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring integrated synchronous buck control with fast transient response capabilities. Ensure the application utilizes N-Channel MOSFETs compatible with the internal driver stage. Verify that the required output voltage falls within the 0.8V to 12V regulation range. Confirm that the system operates within the specified 0°C to +70°C temperature window for this specific variant.

DC DC Switching Controllers Part Context

The ISL6522 series belongs to Renesas' portfolio of PMIC switching controllers designed for processor core voltage regulation. This specific model represents a single-output solution utilizing voltage-mode control. It is part of a family including variants like ISL6522IVZ and ISL6522CRZ, differentiated primarily by packaging options and industrial versus commercial temperature ratings.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include ISL6522IVZ for extended temperature ranges or ISL6522CRZ for QFN packaging. Verify pinout compatibility and thermal characteristics when transitioning between TSSOP and other package types within the same functional family.