PD70101/PD70201
Datasheet
Power over Ethernet 802.3af/at PD Controller
October 2019
Power over Ethernet 802.3af/at PD Controller
Contents
1 Revision History ............................................................................................................................. 1
1.1 Revision 3.0 ........................................................................................................................................ 1
1.2 Revision 2.0 ........................................................................................................................................ 1
1.3 Revision 1.9 ........................................................................................................................................ 1
1.4 Revision 1.8 ........................................................................................................................................ 1
1.5 Revision 1.7 ........................................................................................................................................ 1
1.6 Revision 1.6 ........................................................................................................................................ 1
1.7 Revision 1.5 ........................................................................................................................................ 1
1.8 Revision 1.4 ........................................................................................................................................ 1
1.9 Revision 1.3 ........................................................................................................................................ 1
1.10 Revision 1.2 ...................................................................................................................................... 2
1.11 Revision 1.1 ...................................................................................................................................... 2
1.12 Revision 1.0 ...................................................................................................................................... 2
2 Product Overview .......................................................................................................................... 3
2.1 Features .............................................................................................................................................. 4
2.2 Applications ........................................................................................................................................ 5
3 Functional Descriptions ................................................................................................................. 7
4 Electrical Specifications .................................................................................................................. 8
4.1 Absolute Maximum Ratings ................................................................................................................ 8
4.2 Thermal Properties ............................................................................................................................. 9
4.3 Electrical Characteristics ................................................................................................................... 10
5 Pin Configuration ......................................................................................................................... 18
6 Package Specifications ................................................................................................................. 21
7 Theory of Operation .................................................................................................................... 23
7.1 Detection .......................................................................................................................................... 23
7.2 Physical Layer Classification ............................................................................................................. 23
7.3 Two-Events Detection and AT Flag ................................................................................................... 23
7.4 Soft Start and Inrush Current Protection .......................................................................................... 24
7.5 Over-Current Protection ................................................................................................................... 25
7.6 Power Good ...................................................................................................................................... 25
7.7 Start-up Supply ................................................................................................................................. 26
7.8 PD Interface Thermal Protection ...................................................................................................... 26
7.9 Bulk Capacitor Discharge .................................................................................................................. 26
7.10 DC-DC Start-up ............................................................................................................................... 26
7.11 Current Limit and Short Circuit Protection ..................................................................................... 27
PD-000391083 PD70101/PD70201 Datasheet Revision 3.0
Power over Ethernet 802.3af/at PD Controller
7.12 Low Power Mode Operation .......................................................................................................... 27
7.13 Input (VPP and VCC) Under Voltage Lock Out ................................................................................ 27
7.14 External Enable ............................................................................................................................... 28
8 Ordering Information ................................................................................................................... 29
PD-000391083 PD70101/PD70201 Datasheet Revision 3.0
Power over Ethernet 802.3af/at PD Controller
1
Revision History
The revision history describes the changes that were implemented in the document. The changes are
listed by revision, starting with the most current publication.
1.1
Revision 3.0
Revision 3.0 was published in October 2019. The following is the summary of changes in this revision.
Microsemi logo was added to the pin out figures.
Made formatting changes to application figures.
Divided Electrical Characteristics table under ten different titles.
1.2
Revision 2.0
Revision 2.0 was published in January 2017. The following is the summary of changes.
Changed MSL from 1 to 3.
Updated formatting and disclaimer.
1.3
Revision 1.9
Revision 1.9 was published in November 2015. In this revision, the maximum value for VSW-START was
added.
1.4
Revision 1.8
Revision 1.8 was published in May 2015. The following is the summary of changes in this revision.
Updated differential amplifier and GND connection in figures 2 and 3.
Added the differential amplifier input (VSN, VSP) to Absolute Maximum Ratings table.
1.5
Revision 1.7
Revision 1.7 was published in November 2014. The following is the summary of changes in this revision.
Updated information continuous operation load current parameter.
Updated Pin 3 description.
1.6
1.7
1.8
1.9
Revision 1.6
Revision 1.6 was published in March 2014. Updated differential amplifier gain in figure 2
Revision 1.5
Revision 1.5 was published in February 2014. In this revision, minor formatting corrections were made.
Revision 1.4
Revision 1.4 was published in February 2014. There were general updates in this revision.
Revision 1.3
Revision 1.3 was published in November 2013. The following are the changes in this revision.
Updated Vcc disable.
Added note 5 and removed A from 70101A in the package pin out details.
PD-000391083 PD70101/PD70201 Datasheet Revision 3.0
1
Power over Ethernet 802.3af/at PD Controller
1.10
Revision 1.2
Revision 1.2 was published in June 2012. In this revision, Switching Frequency Accuracy specification
limits and the equation in note 3 were updated.
1.11
Revision 1.1
Revision 1.1 was published in February 2012. In this revision, the document's format and address were
updated.
1.12
Revision 1.0
Revision 1.0 was the production release of this document published in September 2011.
PD-000391083 PD70101/PD70201 Datasheet Revision 3.0
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