REFD5044, Low-EMI, Active-Clamped Forward, Class 4 Powered Device (PD) Provides High-Efficiency Solution for PoE Applications
Referenzdesign unter Verwendung des Teils MAX5974A von Analog Devices
Bilder
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Für Endprodukte
- PoE Applications
Beschreibung
- REFD5044, Reference design is for a highly efficient and low-EMI active-clamped forward, 5V powered device (PD). The design features the MAX5969B as its controller. The design also uses the MAX5974A, which controls current-mode PWM converters and provides inductive feedback, zero-voltage switching (ZVS), and frequency foldback to reduce cost and enhance supply efficiency for PoE applications. Using these devices, this reference design is IEEE 802.3af/at compliant, and is a high-performance, compact, and cost-efficient solution for a Class 4 PD. The design can also support the auxiliary input voltage to provide maximum 25W output power
Haupteigenschaften
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Conversion TypeDC to DC
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Input Voltage42 to 57 V
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Output Voltage5 V
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Output Current4.8 A
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Output Power25 W
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Efficiency92.2 %
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TopologyForward- Active Clamp
Empfohlene Bauteile (3)
| Teilenummer | Hersteller | Typ | Beschreibung | |||
|---|---|---|---|---|---|---|
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MAX5969BETB+T | Analog Devices | Interface Controllers | Powered Device Interface Controller 10-Pin TDFN EP T/R | In den Warenkorb | |
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MAX5969BETB+ | Analog Devices | Interface Controllers | Powered Device Interface Controller 10-Pin TDFN EP T/R | In den Warenkorb | |
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MAX5974AETE+T | Analog Devices | PWM and Resonant Controllers | Current Mode PWM Controller 1A 100kHz to 600kHz 16-Pin TQFN EP T/R | In den Warenkorb | |