EMC-compliant 10/100-Mbps Ethernet PHY reference design with IEEE802.3at Type-1 (≤ 12.95 W) PoE-PD
TIDA-010046
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- EMC-Compliant 10/100-Mbps Ethernet PHY Reference Design With IEEE 802.3at Type-1 (Rev. A)
(PDF 9177 KB)
13 Feb 2020
Description
This reference design provides a cost-optimized solution for 10 to 100 Mbps using the low-power Ethernet physical layer (PHY) DP83825 supporting 150-m reach over CAT5e cable which is beyond the standard Ethernet distance limitation of 100 m (328 feet). This design also demonstrates power delivery over Ethernet cable along with data communication using IEEE802.3at Type-1 (13 W) PoE-PD TPS23755 device with integrated primary side regulated flyback DC/DC controller. This reference design is pre-compliance tested for radiated emissions, ESDs and EFTs.
Features
- Based on low cost, low power consumption and small form-factor 10/100-Mbps Ethernet PHY DP83825 with RMII support and 150-m cable reach
- Efficient power delivery system via PoE using IEEE802.3at Type-1 PoE-PSE and PoE-PD
- Pre-compliance tested for radiated emission requirement: CISPR22/EN55022 - meets Class A and B limits; FCC Part 15 - meets Class A and B limits
- Pre-compliance tested for conducted immunity requirements: ±12-kV contact discharge and ±15-kV air discharge ESD IEC 61000-4-2 - meets criterion B; ±2-kV IO capacitive coupling EFT per IEC 61000-4-4 - meets criterion B
- External isolation transformer with common-mode choke on PHY side for improved EMI and EMC performance
- Programmable LED support for link and activity
See the Important Notice and Disclaimer covering reference designs and other TI resources.
