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Product Description
Broadcom Octal Integrated IEEE 802.3bt-Compliant PSE Controller - BCM59121B0KMLG
The Broadcom BCM59121 is a highly integrated IEEE 802.3bt-compliant power sourcing equipment (PSE) controller with unsurpassed integration and flexibility. It contains eight low-RDS (0.2Ω), high- voltage pass-FETs, each with a very accurate, lossless, proprietary internal current sense and an onboard microcontroller, all targeted to significantly reduce the complexity of Power over Ethernet (PoE) and Power over Ethernet Plus (PoE+) and UPoE designs while easing PCB layout. The BCM59121 provides excellent protection under all possible fault conditions and overloads. It also supports two-event Classification for Type 2 (30W) applications and multi-event Classification for 802.3bt Standard Type3 applications.
The BCM59121 has a networking-oriented host interface, communicating via a BSC bus and capable of speeds up to 2.4 Mb/s
The BCM59121 has a networking-oriented host interface, communicating via a BSC bus and capable of speeds up to 2.4 Mb/s
Features
- IEEE 802.3bt-compliant with support for IEEE 802.3at and IEEE 802.3af
- Supports multi-event classification (Type 2 and Type 3)
- Supports four-pair 60W bt Type3 (BCM59121) applications
- Supports detection of legacy power devices (PDs)
- Cascading of multiple devices; up to 64 ports supported
- Programmable ICUT and ILIM for Type 1, Type 2 and Type 3
- Broadcom Serial Control (BSC), an NXP I2C-compatible bus architecture
- Manual/semi-autonomous operating mode
- Real-time current, voltage, and temperature measurements available per port
- Overtemperature protection (warning and shutdown)
- Operates from a 48V supply (nominal) and external 3.3V supply
- Firmware download capability via BSC communication bus from host
- 8 mm × 8 mm × 0.9 mm QFN-56 package (0.5 mm pitch) with exposed pad
Applications
- Routers and switches for SMB, enterprise, SOHO, and commercial markets
- POE Lighting
DATASHEETOther Details
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Custom Field
MPN BCM59121B0KMLG
Lifecycle Active
Distributor Inventory No
Ambient Temperature –40°C to +85°C
NOTE Images may not be exact, please check specifications.
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