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PD70101 - 802.3af/at PD Controller

Key Features

  • designed to improve efficiency and reliability:.
  • Detection and Classification: The front-end interface includes detection and classification circuitry. The detection signature resistor is disconnected upon completion of the detection phase. The system then begins the classification phase. Classification can be configured for Classes 0 to 4 via an external resistor. The PD70201 includes a two-events classification identification circuit, which generates a flag to inform the PD applicatio.

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Other Datasheets by Microchip Technology

Part Number Description
PD70100 IEEE 802.3af/at PD Front-End
PD70200 IEEE 802.3af/at PD Front-End
PD70201 802.3af/at PD Controller
PD70210 Front-End PD Interface Controller
PD70210A Front-End PD Interface Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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PD70101 and PD70201 PoE IEEE® 802.3af/at PD Controller Introduction The PD70101 and PD70201 devices are integrated Powered Device (PD) interface and PWM controllers for a DC-DC converter used in IEEE® 802.3af and IEEE® 802.3at applications. The PD70101 device can be used for IEEE 802.3af or IEEE 802.3at Type 1 applications, while the PD70201 device can also be used in IEEE 802.3at Type 2 applications. A single PD70201 device can be used in 4-pair applications that consume up to 47.7 W. These devices have a number of features designed to improve efficiency and reliability: • Detection and Classification: The front-end interface includes detection and classification circuitry. The detection signature resistor is disconnected upon completion of the detection phase.