REFD5044, Low-EMI, Active-Clamped Forward, Class 4 Powered Device (PD) Provides High-Efficiency Solution for PoE Applications
使用 Analog Devices 的 MAX5974A 的参考设计
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依据最终产品
- PoE Applications
说明
- 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
主要特色
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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
Featured Parts (3)
| 零件编号 | 供应商 | 类别 | 说明 | |||
|---|---|---|---|---|---|---|
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MAX5969BETB+T | Analog Devices | Interface Controllers | Powered Device Interface Controller 10-Pin TDFN EP T/R | 买入 | |
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MAX5969BETB+ | Analog Devices | Interface Controllers | Powered Device Interface Controller 10-Pin TDFN EP T/R | 买入 | |
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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 | 买入 | |