Product Overview：

The Broadcom BCM59131B0KMLG is an advanced quad-port Power-over-Ethernet (PoE) controller designed to deliver up to 30W per port in accordance with IEEE 802.3at (PoE+) standards. It provides intelligent power management, flexible port configuration, and robust protection features, making it ideal for enterprise-class network equipment such as switches and routers.

Key Features：

Compliant with IEEE 802.3at (PoE+) standard

Supports up to 30W per port for four ports simultaneously

Integrated detection, classification, and power monitoring

Dynamic power management and fault protection

I²C interface for host control and configuration

Low power consumption and efficient thermal design

Compact QFN package for space-saving PCB layout

Typical Applications：

Managed and unmanaged Ethernet switches

Enterprise networking equipment

IP phones, IP cameras, and wireless access points

PoE midspan injectors

Industrial and commercial PoE-enabled systems