Ag9900 offers a simple, ultra-small PoE solution using minimal external low cost components. External bridge rectifiers enable the device to be powered from midor end-span PSE, accepting power from the spare or data cable pairs. Operating over a wide input voltage range, the optimised DC/DC converter still has high efficiency (up to 87%). Built-in protection against overloads and short-circuits is also provided. The regulated DC output voltage is easily adjusted using a simple pull up/down resistor.
The Ag9924M provides signature and control circuitry to give full PoE compatibility. A signature is required by the Power Sourcing Equipment (PSE) before it will provide power to the port.
The industrial temperature Ag9924MT variant provides over temperature protection. This option reduces the output power if the maximum operating temperature is exceeded. Normal operation resumes when the temperature drops back below the threshold. Silvertel’s Ag9900 is ideal as a cost effective solution for POE for any application. This 24V output version caters for a growing trend towards 24V applications in access control, IP audio and industrial control.
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