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Overview
| Topology | LAN / POE |
| Input voltage | 50 V |
| IC revision | 1 |
Description
The Si34071 isolated Forward topology evaluation board is a reference design for a power supply in a Power over Ethernet (PoE) Powered Device (PD) application. The Si34071FW24V7KIT provides an isolated output of 24 V/2.2 A. The Si34071 IC integrates an IEEE 802.03bt compatible PoE interface as well as a current-control-based dc/dc converter.
Features
- IEEE 802.3bt compliant
- Good EMI performance
- 89.7% efficiency
- High integration
- Simple 9600-baud UART interface
- Autoclass feature
- Low BOM cost
- Thermal shutdown protection
- 5x5 mm 32-pin QFN
Typical applications
- Isolated PoE class 7
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Endurance(h) | IRIPPLE(mA) | ILeak(µA) | DF(%) | Pitch(mm) | Ø D(mm) | L(mm) | Packaging | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | Winding Style | Number of windings | L1(µH) | IR(mA) | RDC max.(Ω) | VR(V (DC)) | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | VT(V (AC)) | Mount | L(µH) | LSmin.(nH) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-ATG5 Aluminum Electrolytic Capacitors, 220 µF, 2000 | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATG5 Aluminum Electrolytic Capacitors | Capacitance220 µF | Endurance 2000 | Ripple Current255 mA | Leakage Current77 µA | Dissipation Factor12 % | Pitch3.5 mm | Diameter8 mm | Length11.5 mm | PackagingAmmopack | – | – | – | – | – | – | – | – | – | – | – | Rated Voltage35 V (DC) | – | – | – | – | – | – | – | – | – | ||||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | Length3.2 mm | – | Impedance @ 100 MHz600 Ω | Maximum Impedance650 Ω | Maximum Impedance80 MHz | Rated Current 22500 mA | DC Resistance0.07 Ω | TypeHigh Current | – | Number of windings1 | – | Rated Current2500 mA | DC Resistance [1]0.07 Ω | – | – | – | – | – | Operating Temperature -55 °C up to +125 °C | – | MountSMT | – | – | ||||
 | WE-SL5 SMT Common Mode Line Filter, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-SL5 SMT Common Mode Line Filter | – | – | – | – | – | – | – | Length10 mm | – | Impedance @ 100 MHz800 Ω | Maximum Impedance1200 Ω | Maximum Impedance20 MHz | – | DC Resistance0.035 Ω | – | Winding Stylesectional | Number of windings2 | Inductance [1]250 µH | Rated Current2000 mA | DC Resistance [1]0.035 Ω | Rated Voltage80 V (DC) | – | – | – | – | Operating Temperature -40 °C up to +125 °C | Insulation Test Voltage1000 V (AC) | MountSMT | Inductance250 µH | Leakage Inductance [min.]1500 nH | ||||
 | WE-LAN LAN Transformer, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LAN LAN Transformer | – | – | – | – | – | Pitch1.27 mm | – | Length17.55 mm | – | – | – | – | – | – | Type4PPoE (to 900 mA) | – | – | Inductance [1]350 µH | – | – | – | Data rate10/100/1000BASE-T | Ports1 | PoE4PPoE (up to 1000 mA) | Improved Common Mode RejectionNo | Operating Temperature -40 °C up to +105 °C | Insulation Test Voltage1500 V (AC) | MountSMT | Inductance350 µH | – |