STEVAL-POE002V1, 5V/8A Synchronous Flyback Converter, Power over Ethernet (PoE) IEEE 802.3bt compliant Reference Design
Reference Design using part PM8805 by STMicroelectronics
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For End Products
- Barcode Scanner
- Cash Drawer
- EPOS System
- POS Systems
- Power Over Ethernet
Description
- STEVAL-POE002V1, Reference Design is a two-stage converter for a powered device (PD), and is able to deliver up to 40W (5V/8A) DC from appropriate 4-pair PoE power sourcing equipment (PSE), or an external auxiliary supply. The first stage is the Ethernet interface is based on the PM8805 controller with integrated full active bridge rectification. The PoE controller is compliant with the third generation IEEE 802.3bt specification (as well as the preceding 802.3af/at standards), with improved features and increased power capacity that allow new application possibilities for PoE networks, including point of sales and retail logistics devices. The second stage is the DC-DC converter designed around a fixed frequency flyback topology managed by the configurable PM8804 PWM controller, with secondary synchronous rectification via a gate driver transformer
Key Features
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Conversion TypeDC to DC
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Input Voltage40 to 60 V
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Output Voltage5 V
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Output Current8 A
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Output Power40 W
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Efficiency91 %
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TopologyFlyback- Synchronous|PoE
Featured Parts (11)
| Part Number | Manufacturer | Type | Description | |||
|---|---|---|---|---|---|---|
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SRK1000BTR | STMicroelectronics | AC to DC Switching Converters | AC to DC Switching Converter Flyback 300kHz T/R 6-Pin SOT-23 | Buy | |
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SRK1000ATR | STMicroelectronics | AC to DC Switching Converters | AC to DC Switching Converter Flyback 300kHz T/R 6-Pin SOT-23 | Buy | |
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TS2431BILT | STMicroelectronics | Voltage References | V-Ref Adjustable 2.5V to 24V 100mA 3-Pin SOT-23 T/R | Buy | |
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SRK1000 | STMicroelectronics | AC to DC Switching Converters | AC to DC Switching Converter Flyback 300kHz T/R 6-Pin SOT-23 | Buy | |
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TS2431ILT | STMicroelectronics | Voltage References | V-Ref Adjustable 2.5V to 24V 100mA 3-Pin SOT-23 T/R | Buy | |
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TS2431AILT | STMicroelectronics | Voltage References | V-Ref Adjustable 2.5V to 24V 100mA 3-Pin SOT-23 T/R | Buy | |
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FOD817AS | onsemi | Transistor and Photovoltaic Output Photocouplers | Optocoupler DC-IN 1-CH Transistor DC-OUT 4-Pin PDIP SMD Black Box | Buy | |
| PM8805TR | STMicroelectronics | Power Over Ethernet - PoE Controllers | Power Over Ethernet PD Controller 43-Pin VFQFPN EP | Buy | ||