MAXREFDES108#

MAXIM INTEGRATED PRODUCTS  MAXREFDES108#  Reference Design Board, Non-isolated 12V/1A PoE Powered Device Power Supply 新

The is a 12V/1A non-isolated POE powered device power supply. MAXREFDES108# is a unique PoE module reference design, providing 12V at 1A 12W from a 36V to 57V input. This design can be used for evaluation, design, prototyping and production. The circuit consists of two function blocks such as the PD controller and the step-down DC-DC converter. The PD controller section employs the MAX5969A and DC to DC power supply uses the MAX17505 4.5V to 60V input, 1.7A output, high-efficiency, synchronous, step-down DC-DC converter with internal compensation. The entire design delivers a peak efficiency of 90% with an input of 48V. Typical applications include lighting, IP cameras, sensors and non-isolated Ethernet equipment.

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Compact and flexible

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Minimal external components

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Robust operation in adverse environments

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12W output capacity and ±3% output accuracy