STEVAL-POE002V1, 5V/8A Synchronous Flyback Converter, Power over Ethernet (PoE) IEEE 802.3bt compliant Reference Design
Referenzdesign unter Verwendung des Teils PM8805 von STMicroelectronics
Bilder
1 / 5
Für Endprodukte
- Barcode Scanner
- Cash Drawer
- EPOS System
- POS Systems
- Power Over Ethernet
Beschreibung
- 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
Haupteigenschaften
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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
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