IEEE 802.3af/at PD Front End IC

Microsemi Proprietary and Confidential. PD70100/PD70200 Datasheet Revision 3.0

Contents

1 Revision History ............................................................................................................................. 1

1.1 Revision 3.0 ........................................................................................................................................ 1

1.2 Revision 2.0 ........................................................................................................................................ 1

1.3 Revision 1.1 ........................................................................................................................................ 1

1.4 Revision 1.0 ........................................................................................................................................ 1

1.5 Revision 0.6 ........................................................................................................................................ 1

1.6 Revision 0.5 ........................................................................................................................................ 1

1.7 Revision 0.4 ........................................................................................................................................ 1

1.8 Revision 0.3 ........................................................................................................................................ 1

1.9 Revision 0.1 ........................................................................................................................................ 1

2 Product Overview .......................................................................................................................... 2

2.1 Features .............................................................................................................................................. 2

2.2 Applications ........................................................................................................................................ 2

3 Functional Descriptions ................................................................................................................. 4

3.1 Detail Description ............................................................................................................................... 5

3.1.1

Detection ................................................................................................................................................. 5

3.1.2

Physical Layer Classification .................................................................................................................... 5

3.1.3

Two-Events Detection and AT Flag .......................................................................................................... 5

3.1.4

Soft Start and Inrush Current Protection ................................................................................................ 5

3.1.5

Over-Current Protection ......................................................................................................................... 6

3.1.6

Power Good ............................................................................................................................................. 7

3.1.7

Auxiliary Voltage Output ......................................................................................................................... 7

3.1.8

Thermal Protection ................................................................................................................................. 7

3.1.9

Bulk Capacitor Discharge ......................................................................................................................... 7

4 Electrical Specifications .................................................................................................................. 8

4.1 Absolute Maximum Ratings ................................................................................................................ 8

4.2 Typical Electrical Performance ........................................................................................................... 8

4.2.1

Power Supply ........................................................................................................................................... 8

4.2.2

Detection Mode ...................................................................................................................................... 9

4.2.3

Classification Mode ................................................................................................................................. 9

4.2.4

Mark ...................................................................................................................................................... 10

4.2.5

Isolation Switch ..................................................................................................................................... 10

4.2.6

DC/DC Capacitor Discharger .................................................................................................................. 10

4.2.7

AT_FLAG ................................................................................................................................................ 11

4.2.8

PGOOD .................................................................................................................................................. 11

4.2.9

Thermal Shutdown ................................................................................................................................ 11