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Supplier: Coilcraft CPS
Description: Designed to meet 30 W PoE IEEE 802.3at-2009 standard. Operates at 250 kHz with 36 – 7 2 Volts input. Isolation: 1500 Vrms pri to sec; 500 Vrms pri to
- Maximum Primary Voltage Rating: 36 to 72 volts
- Maximum Secondary Voltage Rating: 3.3 volts
- Mounting / Form Factor: PC / PCB Mount
- Operating Temperature: -40 to 125 C
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Supplier: Coilcraft CPS
Description: Designed to meet 30 W PoE IEEE 802.3at-2009 standard. Operates at 250 kHz with 36 – 7 2 Volts input. Isolation: 1500 Vrms pri to sec; 500 Vrms pri to
- Maximum Primary Voltage Rating: 36 to 72 volts
- Maximum Secondary Voltage Rating: 19.5 volts
- Mounting / Form Factor: PC / PCB Mount
- Operating Temperature: -40 to 85 C
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Supplier: Coilcraft CPS
Description: Designed to meet 30 W PoE IEEE 802.3at-2009 standard. Operates at 250 kHz with 36 – 7 2 Volts input. Isolation: 1500 Vrms pri to sec; 500 Vrms pri to
- Maximum Primary Voltage Rating: 36 to 72 volts
- Maximum Secondary Voltage Rating: 1.8 volts
- Mounting / Form Factor: PC / PCB Mount
- Operating Temperature: -40 to 125 C
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Supplier: Coilcraft CPS
Description: Designed to meet 30 W PoE IEEE 802.3at-2009 standard. Operates at 250 kHz with 36 – 7 2 Volts input. Isolation: 1500 Vrms pri to sec; 500 Vrms pri to
- Maximum Primary Voltage Rating: 36 to 72 volts
- Maximum Secondary Voltage Rating: 24 volts
- Mounting / Form Factor: PC / PCB Mount
- Operating Temperature: -40 to 125 C
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Supplier: Coilcraft, Inc.
Description: Developed for Maxim MAX5941A PoE Interface/PWM Controller
- Operating Temperature: -40 to 125 C
- Standards / Compliance: RoHS Compliant
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Supplier: Coilcraft, Inc.
Description: Flyback and forward transformers for PoE applications up to 72 W Operates with 9 – 57 V input (POE21, 22, 24, 33, 35 and 38) Operates with 33 – 57 V input (POE23, 30, 36, 53, 70 and 72) Dual outputs can be configured as one single higher power output AEC-Q200 Grade
- Operating Temperature: -40 to 125 C
- Power Rating (Watts): 22 watts
- Standards / Compliance: RoHS Compliant
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Supplier: Coilcraft, Inc.
Description: Developed for flyback applications up to 30 Watts. Designed to meet IEEE 802.3at-2009 standard. Operates with 36 – 72 V input at a 250 kHz switching frequency. UL Certified per File E219588 Samples of all values are available in Coilcraft Designer's Kit C398
- Operating Temperature: -40 to 125 C
- Power Rating (Watts): 30 watts
- Standards / Compliance: RoHS Compliant
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Supplier: Coilcraft, Inc.
Description: Developed for Powered Devices (PD) in IEEE 802.3af compliant PoE applications 6 Watt and 13 Watt output versions 36 – 72 V input, 250 kHz switching frequency Bias winding output: 12 V, 20 mA
- Operating Temperature: -40 to 125 C
- Power Rating (Watts): 13 watts
- Standards / Compliance: RoHS Compliant
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Supplier: ODG (Origin Data Global)
Description: Audio Transformers / Signal Transformers POE300F Flyback PoE+ 30uH 24 V 1.25 A
- Transformer Category: Signal / RF Transformer
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Supplier: ODG (Origin Data Global)
Description: Audio Transformers / Signal Transformers POE300F Flyback PoE+ 30uH 12 V 2.5 A
- Transformer Category: Signal / RF Transformer
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Supplier: ODG (Origin Data Global)
Description: Audio Transformers / Signal Transformers POE13P Flyback PoE 127uH 5.0 V 2.6 A
- Transformer Category: Signal / RF Transformer
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Supplier: ODG (Origin Data Global)
Description: Audio Transformers / Signal Transformers POE13P Flyback PoE 13uH 3.3 V 4.0 A
- Transformer Category: Signal / RF Transformer
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Supplier: Acme Chip Technology Co., Limited
Description: TRANS FLYBACK POE 12W 12V
- Transformer Category: Signal / RF Transformer
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Supplier: VAST STOCK CO., LIMITED
Description: Audio Transformers / Signal Transformers POE60C Mini Flyback For PoE 90uH
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Supplier: DigiKey
Description: TRANS FLYBACK POE 12W 12V
- Transformer Category: Signal / RF Transformer
- Type: Pulse Transformer
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Description: TRANS FLYBACK POE SMD
- Maximum Primary Voltage Rating: 33 to 57 volts
- Mounting / Form Factor: Chip Transformer
- Operating Temperature: -40 to 125 C
- Transformer Category: Signal / RF Transformer
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Supplier: Radwell International
Description: AUDIO TRANSFORMER, SIGNAL TRANSFORMER, FLYBACK POE, 30UH, 12V, 2.5A. FREE 2 YEAR RADWELL WARRANTY
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Supplier: RS Components, Ltd.
Description: Flyback transformers designed for Power-over-Ethernet PDs.,Suitable for: PoE ICs LTC4267, LM5070, etc. Input voltage Range: 36V-72V. Switching frequencies: 200-300kHz. Operating Temperature: -40°C to +125°C. Hipot test: 1.5kVac/1min. Number of Output Ports = 3 Mounting Type
- Mounting / Form Factor: Chip Transformer
- Operating Frequency Range: 200000 to 300000 Hz
- Operating Temperature: -40 C
- Transformer Category: Signal / RF Transformer
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Supplier: RS Components, Ltd.
Description: Flyback transformers designed for Power-over-Ethernet PDs.,Suitable for: PoE ICs LTC4267, LM5070, etc. Input voltage Range: 36V-72V. Switching frequencies: 200-300kHz. Operating Temperature: -40°C to +125°C. Hipot test: 1.5kVac/1min. Number of Output Ports = 2 Mounting Type
- Mounting / Form Factor: Chip Transformer
- Operating Frequency Range: 250000 Hz
- Operating Temperature: 125 C
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Supplier: RS Components, Ltd.
Description: EFD type ferrite core low profile SMT package with 10 gull wing terminals High through-put power capability. Applications in general purpose isolated DC/DC Converters (up to 55W), Power over Ethernet (PoE/12W and PoE +/30W) Powered Devices (PD) and Power Sourcing Equipment (PSD
- Maximum Primary Voltage Rating: 36 to 60 volts
- Maximum Secondary Voltage Rating: 3.3 to 12 volts
- Mounting / Form Factor: Chip Transformer
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Supplier: Infineon Technologies AG
Description: -in digital soft-start Cycle by cycle peak current limitation Support both DCM and CCM operation with slope compensation Integrated error amplifier to support direct feedback typical with non-isolated flyback topology Digital frequency reduction with decreasing
- Configuration / Function: Flyback Converter
- IC Package Type: Other
- Operating Temperature: -40 to 129 C
- Output Power: 27 watts
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Supplier: RS Components, Ltd.
Description: Flyback transformers designed for Power-over-Ethernet PDs.,Suitable for: PoE ICs LTC4267, LM5070, etc. Input voltage Range: 36V-72V. Switching frequencies: 200-300kHz. Operating Temperature: -40°C to +125°C. Hipot test: 1.5kVac/1min. Number of Output Ports = 3 Mounting Type
- Operating Temperature: 125 C
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How to Make a PoE PD System More Efficient by Using a Flyback Converter
PoE sends power over the Ethernet cable by injecting 50 V DC into the center taps of the Ethernet transformers. Power is sent via two or four twisted pairs of cables. One of the key aspects of the IEEE standard is that it allows power to be injected from the Ethernet switch to both positive
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High Frequency (MHz) Resonant Converters
using GaN HEMTs and Novel Planar
Transformer Technology
It can be used for several AC-DC and DC-DC applications, including a laptop adapter, a computer monitor, telecom, PoE , WLAN access points etc., In this case, the transformer serves the purpose of isolation and it can be utilized for multiple .... The basic schematic of the flyback DC- DC converter is shown in fig. 12.
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Thesis for the degree of Licentiate of Technology
Consider a 30W, 12V flyback converter utilized for PoE application, with an Input voltage range of 36V-72V and a turn’s ratio ‘n’ of 2 with an assumption of a minimum output power of 1/10th nominal power. .... The primary/secondary inductances of the transformer for the given power under DCM and CCM were determined with…
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High Efficiency Transformers for PoE Applications available Off-the-Shelf
Three sizes of power transformers and three output voltage levels for each power class allow designers to select the smallest and most efficient package for the class of PoE device they are designing and to use standard, off-the-shelf components. .... The transformers are designed for continuous mode flyback topologies operating between 200 and 400kHz.
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35W Power over Ethernet PD Controller with Synchronous NoOpto Flyback Controller Bridges the PoE+ Gap
…the heart of the LTC4268-1 is a high-performance switching regulator optimized for isolated PoE applications. .... A feedback amplifier senses the output voltage through the transformer winding during the flyback period and uses this voltage to tightly regulate the output.
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1970 Index IEEE Transactions on Broadcast and Television Receivers for Volume BTR-16
Zlokich, N., T-BTR 70 Nov 301-311 Computer-aided design; flyback transformers for solid-state horizontal deflection circuits. .... Poe , Lawrence R., T-BTR 70 Feb 1-17 Computer-aided design; use of graphic terminals.
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Switching Power Supply Design & Optimization, Second Edition > Forward and Flyback Converters: Step-by-Step Design and Comparison
Worked Example: Flyback and Forward Alternative Design Paths. .... In a telecommunications application, such as power over ethernet ( PoE ), we have an input voltage of 36 .... Select the transformer core, and calculate the primary and secondary number of turns on it.
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Isolated Monolithic Flyback Simplifies Design and Eliminates Optocoupler
…third winding or optoisolator and can sense the output voltage directly from the primary side flyback waveform. .... medical, datacom and automotive applications requiring isolated power, including marine electronics, low power PoE and VoIP telephone .... Boundary mode operation also permits the use of a smaller transformer when compared to equivalent continuous conduction…
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INTEGRATED 100-V IEEE 802.3af PD AND DC/DC CONTROLLER
Multiple outputs can be created by use of techniques such as multi-secondary transformers and combinations of .... The isolated synchronous flyback of Figure 38 is appropriate where the PD has a non-isolated metallic … an external wall adapter with the voltage applied directly to the converter input, after the PoE output.
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Switching Power Supply Design & Optimization, Second Edition > Soft-Switching and Designing LLC Converters
…secondary-side PCB traces can cause a huge primary-side zener-clamp dissipation term in the Flyback . .... Construction of a typical LLC transformer . .... bridge to the square-wave LLC resonant circuit we had in our earlier PoE example (see Fig…
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Power Over Ethernet Interoperability > Auxiliary Power and Flyback Design
…at what input voltage should we set r to 0.4 to 0.5 as suggested previously The answer is at the lowest-input voltage because in a flyback , the lowest-input voltage … also ensure that the transformer core is selected at .... Suppose we want to design a PD for a four-pair PoE application.