IW1791-05

Power Supply Controllers, Monitors Overview

The iW1791-05 is a switching controller designed for AC/DC primary-side rapid charge applications. It functions as a PWM controller featuring high-resolution voltage and current control capabilities. The device supports flyback topology with peak current mode DCM regulation. It includes UVLO thresholds of 15.5V rising and 7.2V falling, with a maximum VBIAS of 40V. The controller provides one FET driver output with a maximum current of 1A. It operates at a fixed switching frequency of 76 kHz and supports a maximum output power of 27W. The component is available in an SOIC-8 package.

Power Supply Controllers, Monitors Feature Summary

• Primary-side regulation for simplified design
• High-resolution voltage and current control
• Integrated fast OVP response mechanism

Power Supply Controllers, Monitors Applications

• USB PD 3.0 AC/DC Power Adapters for Smartphones, Tablets, Laptops, and Other Mobile Devices
• USB PD 3.0 Power Supplies for Set-Top Boxes, Displays, Speakers
• In-the-Wall Receptacles Lamps and Lighting Fixtures with USB PD 3.0 Ports

Power Supply Controllers, Monitors Procurement Notes

Verify availability status carefully before procurement planning. Mouser currently reports limited supply or special order requirements for this part number. Confirm lead times and factory allocation directly with the manufacturer or authorized distributors prior to finalizing design-in decisions to avoid production delays.

Power Supply Controllers, Monitors Selection Notes

Select this component for designs requiring primary-side regulation in rapid charge protocols. Ensure the application supports the specified 76 kHz switching frequency and 27W maximum power limit. Verify compatibility with USB PD 3.0 and Qualcomm Quick Charge 4+ standards if applicable. Check package constraints against PCB layout requirements.

Power Supply Controllers, Monitors Part Context

This part belongs to Renesas' digital controller portfolio for AC/DC conversion. It integrates features typically found in separate analog controllers, reducing bill of materials complexity. The device targets modern fast-charging standards, offering precise control loops without secondary side feedback components.

Power Supply Controllers, Monitors Replacement Considerations

No public confirmed substitute part numbers are documented.