PPM-PS397-POE-1
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Catalog excerpts

PPM-PS397-POE-1 - 1

PPM-PS397-POE-1 25W Power over Ethernet PD PC/104-Plus Power Supply Features • PC/104-Plus Powered Device (PD) power supply for Power over Ethernet (PoE) applications • PoE input voltage: 42 – 57VDC • Dual Polarity Power Sourcing Equipment (PSE) supported • 802.3af/at compliant with Class 4 signature • Auxiliary 16 – 60VDC input supported • Isolated voltage outputs which provide up to 25W combined power: +5VDC, +12VDC, and -12VDC • Line and load regulation ±100mV for all outputs • No minimum load required for regulation • Outputs have short circuit/overload protection • Four LEDs provide visual indication of the DC power input and output voltages • High efficiency and fast transient response • No fan or heat sink required • -40°C to +85°C temperature operation • Small size: 3.6 x 3.8 inches (90 x 96mm) • Other standard or custom configurations available • PC/104-Plus and RoHS compliant Product Description The PPM-PS397-POE-1 is an isolated 25W, PC/104-Plus form factor, 802.3af/at compliant, PoE PD power supply. The Class 4 signature supports up to twice the power of 802.3af compliant PD devices. The PPM-PS397-POE-1 is designed to power a single board computer from DC power extracted from a CAT5 cable sourced by an 802.3af/at compliant PSE device configured as either an endpoint or midspan device. The PPM-PS397-POE-1 accepts positive or negative polarity power in the 42 – 57VDC range from the RJ45 Ethernet interface. It converts the power to three rails: +5VDC @ up to 5.0A, +12VDC @ up to 1.0A, and -12VDC @ up to 800mA. These three output power rails are wired to the PC/104-Plus, PC/104, and auxiliary output connectors. The combined output power for the three rails must not exceed 25W, with a maximum of 12W available from the combination +12V and -12V. The PPM-PS397-POE-1 can alternatively take power from an auxiliary input power connector rather than from the Ethernet PoE interface. The auxiliary input power range is from 16 – 60VDC. The auxiliary input is dominant. When present, it will always power the PD regardless of the state of PoE. If auxiliary power is connected, the PPM-PS397-POE-1 will not draw any power from the PoE interface. The auxiliary power input is hot-swap capable WinSystems | 715 Stadium Drive, Arlington, TX 76011 USA | Tel 817-274-7553 | Info@WinSystems.com | www.WinSystems.com

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PPM-PS397-POE-1 - 2

PPM-PS397-POE-1: PC/104-Plus Power over Ethernet Power Supply From the input voltage source, an isolated converter topology is used to produce a +5V @ 5.0A isolated power rail which then feeds two tandem +12V and -12V converters. Each output is short circuit protected and current limited. A minimum load is not needed to bring the supply into regulation. The PPM-PS397-POE-1 will show up as a Class 4 device during two event PoE discovery. When used with a Type 2 PSE, such as WinSystems’ PPM-GIGE-2-POE, the device can provide up to 25W of power. When used with a PSE that does not recognize the...

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