In need of an IEEE802.3bt-ready PSE controller? Check out the TPS23881
The TPS23861 is an easy-to-use, flexible, IEEE802.3at PSE solution. As shipped, it automatically manages four 802.3at ports without the need for any external control.
The TPS23861 automatically detects Powered Devices (PDs) that have a valid signature, determines power requirements according to classification and applies power. Two-event classification is supported for type-2 PDs. The TPS23861 supports DC disconnection and the external FET architecture allows designers to balance size, efficiency and solution cost requirements.
The unique pin-out enables 2-layer PCB designs via logical grouping and clear upper and lower differentiation of I2C and power pins. This delivers best-in-class thermal performance, Kelvin accuracy and low-build cost.
In addition to automatic operation, the TPS23861 supports Semi-Auto Mode via I2C control for precision monitoring and intelligent power management. Compliance with the 400-ms TPON specification is ensured whether in semi-automatic or automatic mode.
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Part number | Order | Vin (Min) (V) | Vin (Max) (V) | ILIM | PoE standards supported | FET | MPS method | Pair control | Operating temperature range (C) | Features | Number of PSE ports | Package Group | Package size: mm2:W x L (PKG) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TPS23861 |
|
44 | 57 | Programmable |
802.3at Type 1 (802.3af)
802.3at Type 2 |
External | DC Disconnect | 2-Pair Alt A | -40 to 125 |
Autonomous Mode
Current Limit with Foldback Fast shutdown Over Current Reporting Over Temp Reporting Programmable ICUT |
4 | TSSOP | 28 | 28TSSOP: 62 mm2: 6.4 x 9.7 (TSSOP | 28) |
TPS2388 |
|
44 | 57 | Programmable |
802.3at Type 1 (802.3af)
802.3at Type 2 |
External | DC Disconnect | 2-Pair Alt A | -40 to 125 |
Current Limit with Foldback
Fast shutdown Multi Level Port Priority Over Current Reporting Over Temp Reporting Port remapping Programmable ICUT |
8 | QFN | 56 | 56QFN: 64 mm2: 8 x 8 (QFN | 56) |
TPS23880 |
|
44 | 57 | Programmable |
802.3at Type 1 (802.3af)
802.3at Type 2 802.3bt Type 3 802.3bt Type 4 |
External | DC Disconnect |
2-Pair Alt A
4-Pair |
-40 to 125 |
Auto Mode
Current Limit with Foldback Fast shutdown Multi Level Port Priority Over Current Reporting Over Temp Reporting Port remapping Programmable PCUT Programmable Port Power Limiting SRAM Programmable |
8 | QFN | 56 | 56QFN: 64 mm2: 8 x 8 (QFN | 56) |
TPS23881 |
|
44 | 57 | Programmable |
802.3at Type 1 (802.3af)
802.3at Type 2 802.3bt Type 3 802.3bt Type 4 |
External | DC Disconnect |
2-Pair Alt A
4-Pair |
-40 to 125 |
Auto Mode
Autonomous Mode Current Limit with Foldback Fast shutdown Multi Level Port Priority Over Current Reporting Over Temp Reporting Port remapping Programmable PCUT Programmable Port Power Limiting SRAM Programmable |
8 | QFN | 56 | 56QFN: 64 mm2: 8 x 8 (QFN | 56) |