3.3V, 5V DC to DC Multi-Output Power Supply for Ethernet Microwave Radio
Reference Design using part MAX5974A by Analog Devices
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For End Products
- Ethernet Microwave Radio
- IP Phone
- PoE Security Camera
- PoE Wireless Access Point
- Power Over Ethernet
Description
- Highly efficient, Flyback 3.3V and 5V Class 2 powered device. The design features the MAX5969B as its controller. The design also uses the MAX5974A, Which controls, Current-mode PWM converters and provides frequency foldback for PoE applications. Using these devices, this reference design is IEEE 802.3af/at compliant and a high performance, Compact, and cost efficient solution for a Class 2 PD. The design can also be customized to 3.3V/2A and 5V/1A Class 3 PD
Key Features
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Conversion TypeDC to DC
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Input Voltage36 to 57 V
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Output Voltage3.3|5 V
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Output Current0.8@5V|1@3.3V A
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Efficiency84.5 %
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TopologyFlyback
Featured Parts (4)
| Part Number | Manufacturer | Type | Description | |||
|---|---|---|---|---|---|---|
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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 | Buy | |
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MAX5974AETE+ | Analog Devices | PWM and Resonant Controllers | Current Mode PWM Controller 1A 100kHz to 600kHz 16-Pin TQFN EP T/R | Buy | |
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MAX5974AETE+ | Analog Devices | PWM and Resonant Controllers | Current Mode PWM Controller 1A 100kHz to 600kHz 16-Pin TQFN EP T/R | Buy | |
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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 | Buy | |