ISL91211BIKZ-TR5875

Voltage Regulators - DC DC Switching Regulators Overview

The ISL91211BIKZ-TR5875 is a quad-output programmable Power Management IC (PMIC) from Renesas. It integrates four synchronous buck converters capable of delivering up to 5A per phase continuous output current. The device operates with an input voltage range of 2.5V to 5.5V and features proprietary R5 Technology for tight output accuracy, ultra-fast transient response, and seamless DCM/CCM transitions without external compensation. It includes integrated low ON-resistance MOSFETs, automatic Diode Emulation, and Pulse Skipping modes for high efficiency under light loads.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates four independent buck controllers with reconfigurable power stages for flexible multiphase or single-phase operation.
• Features proprietary R5 Technology controller providing precise load regulation and fast transient response without external compensation components.
• Includes integrated low ON-resistance MOSFETs and programmable PWM frequency to minimize external inductor and capacitor sizes.
• Supports advanced light-load efficiency through automatic Diode Emulation and Pulse Skipping modes.

Voltage Regulators - DC DC Switching Regulators Applications

• Xilinx Artix-7 FPGA power supply design
• Xilinx Spartan-7 FPGA power supply design
• Xilinx Zynq-7000 series FPGA power supply design

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix TR5875 against official Renesas documentation to confirm tape and reel specifications. Ensure compatibility with the target FPGA board requirements for voltage rails and current capacity. Cross-reference the package type and pinout with the datasheet to prevent integration errors during PCB layout.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this PMIC for applications requiring multiple regulated voltage rails from a single 5V source with high current density. It is suitable for designs prioritizing small solution size and high efficiency across varying load conditions. Consider the I2C programmability for dynamic voltage scaling if system flexibility is required.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the ISL91211 family of PMICs optimized for Xilinx FPGAs. The ISL91211B variant specifically offers four outputs compared to the three outputs of the ISL91211A. These devices are designed to replace discrete regulator solutions, reducing board space and simplifying power sequencing for complex digital logic families.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum continuous output current per phase?

Each of the four buck converter phases can deliver up to 5A of continuous output current.

Does the ISL91211BIKZ require external compensation?

No, the device utilizes proprietary R5 Technology that eliminates the need for external compensation components while maintaining stability.