BCM59111KMLG
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| Package / Case | 48-VFQFN Exposed Pad |
| Mfr | Broadcom Limited |
| Mounting Type | Surface Mount |
| Operating Temperature | - |
| Current - Supply | - |
| Type | Controller (PSE) |
| Number of Channels | 4 |
| Power - Max | 60 W |
| Supplier Device Package | 48-QFN (7x7) |
| Voltage - Supply | - |
| Standards | 802.3at (PoE) |
| Internal Switch(s) | No |
| Auxiliary Sense | No |
| Package | Tray |
| Product Status | Obsolete |
| Base Product Number | BCM59111 |
| REACH Status | REACH Unaffected |
| Standard Package | 1 |
| ECCN | OBSOLETE |
| HTSUS | 0000.00.0000 |
BCM59111KMLG PSE controller 4 Channel 802.3at (PoE)
General DescriptionThe BCM59111KMLG is a highly integrated quad-channel Power Sourcing Equipment (PSE) controller manufactured by Broadcom, compliant with IEEE 802.3at (PoE+) and IEEE 802.3af (PoE) standards for Ethernet power delivery. Designed for robust and efficient power management in network systems, it integrates four low-RDS (0.35Ω) high-voltage pass-FETs, lossless current-sense circuitry, and an onboard microcontroller, which greatly simplifies PoE/PoE+ design and eases PCB layout. It supports up to 60W 4-pair powering, two-event classification for Type 2 (30W) devices, and legacy PD detection, delivering reliable power sourcing for diverse powered devices. Housed in a compact 48-pin QFN (7×7 mm) package, it operates across -40°C to +85°C and is RoHS-compliant, suitable for industrial and networking applications.
The BCM59111KMLG is widely used in enterprise Ethernet switches, PoE midspan injectors, and wireless access points requiring multi-port high-efficiency power sourcing. It serves as a core controller in IP cameras, VoIP phones, and industrial IoT devices, delivering stable and compliant power over Ethernet for long-distance data and power transmission. It is ideal for smart building automation, security systems, and high-power industrial network equipment, leveraging its 60W 4-pair capability and robust fault protection for reliable operation. It also applies to scalable PoE systems, where cascading multiple devices enables efficient management of up to 64 ports in large-scale networking deployments.
Alternative PoE controllers
● TI TPS23881: 8-channel PoE PSE controller with IEEE 802.3at/af compliance, 60W 4-pair support, and I²C interface, offering high integration for enterprise switches.
● Maxim MAX5977A: Quad-channel PoE+ controller with 30W per port, integrated FETs, and fault protection, optimized for compact PoE midspan and access point designs.
● STMicroelectronics STPD01: 4-channel PSE controller supporting IEEE 802.3af, with low-power operation and comprehensive protection, suitable for cost-sensitive PoE applications.
● Microchip PD69104: Quad-channel PoE+ controller with 60W 4-pair capability, I²C interface, and cascading support, delivering scalable and reliable power sourcing for industrial networks.
