PD77020-020300

Overview

The Microchip Technology PD77020 is a Power over Ethernet (PoE) power management controller designed for multi-port PSE systems. It integrates a Microchip SAMD21 controller within a 5mm × 5mm 32-pin QFN package. The device supports up to 16 powered ports and provides comprehensive system-level features including port mapping, priority management, and power budgeting. It facilitates communication with host controllers via a 15-byte protocol and offers real-time protection, LLDP support, and temperature monitoring capabilities.

Feature Summary

• Provides multi-port PoE functionality including port matrix mapping and system power management
• Integrates a Microchip SAMD21 controller for advanced configuration and status monitoring
• Supports real-time protection, LLDP, and temperature alarm reporting
• Enables host communication through a defined 15-byte protocol interface

Applications

• Enterprise market switches and routers
• Small-to-medium business and SOHO commercial market switches
• PoE injectors

Procurement Notes

Verify the specific suffix of the part number against official Microchip documentation to confirm exact electrical characteristics and packaging options. Ensure compatibility with intended host controllers, such as the PD77728, by reviewing interface protocols. Confirm that the 32-pin QFN package aligns with PCB layout requirements and thermal management strategies for the target application environment.

Selection Notes

Select this component when designing multi-port PoE systems requiring integrated management capabilities. It is suitable for applications needing port prioritization, dynamic power budgeting, and detailed system status reporting. Consider its integration with the SAMD21 core for flexible configuration. Evaluate the need for specific protection features and communication protocols required by the host system architecture.

Part Context

The PD77020 belongs to Microchip's portfolio of PoE power management solutions. It is designed to operate in conjunction with other PoE managers like the PD77728. The device leverages the SAMD21 microcontroller architecture to deliver robust control functions for enterprise and commercial networking equipment, focusing on efficient power distribution and system reliability.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Microchip technical support or updated datasheets for potential alternatives or newer generations within the same product family.