ZHCSNB6A April 2021 – February 2022 TPS23882B
PRODUCTION DATA
Table 5-1 summarizes the primary differences between the available 2-pair PSE devices.
| KEY FEATURES | TPS23880 | TPS23881 | TPS23882B |
|---|---|---|---|
| Compatible with TI's FirmPSE system firmware | N/A | Yes | Yes |
| Pin-to-pin compatible | Yes | Yes | Yes |
| Number of PSE channels | 8 | 8 | 8 |
| Supported IEEE 802.3 PSE Types | PoE 2 802.3bt Type 3 or 4 (2 or 4 pair) | PoE 2 802.3bt Type 3 or 4 (2 or 4 pair) | PoE 2 802.3bt Type 3 (2 pair) |
| RSENSE | 0.255 Ω | 0.200 Ω | 0.200 Ω |
| 2-pair PCUT programmable ranges | 0.5 W to 54 W | 2 W to 65 W | 2 W to 65 W |
| 4-pair PCUT programmable ranges | 0.5 W to 108 W | 4 W to 127 W | N/A |
| 90+ W 4-pair PCUT accuracy | ±3.0 % | ±2.5 % | N/A |
| Channel capacitance measurement range | N/A | 1 μF to 12 μF | 1 μF to 12 μF |
| ULA packaging | No | Yes (TPS23881A) | N/A |
| I2C programmable SRAM memory | 16 kB | 16 kB | 16 kB |
| KEY FEATURES | TPS23861 | TPS2388 | TPS23881 | TPS23882B |
|---|---|---|---|---|
| Compatible with TI's FirmPSE system firmware | N/A | N/A | Yes | Yes |
| Pin-to-pin compatible | N/A | Yes | Yes | Yes |
| Number of PSE channels | 4 | 8 | 8 | 8 |
| Supported IEEE 802.3 PSE Types | PoE 1 802.3 at Type 1 or 2 | PoE 1 802.3 at Type 1 or 2 | PoE 2 802.3bt Type 3 or 4 (2 or 4 pair) | PoE 2 802.3bt Type 3 (2 pair) |
| RSENSE | 0.255 Ω | 0.255 Ω | 0.200 Ω | 0.200 Ω |
| 2-pair PCUT programmable ranges | N/A ICUT adjustable up to 920 mA | N/A ICUT adjustable up to 920 mA | 2 W to 65 W | 2 W to 65 W |
| TMPS | 15 ms | 15 ms | 3 ms | 3 ms |
| Port current limit (1x / 2x) | 425 mA / 1060 mA | 425 mA / 1060 mA | 425 mA / 1250 mA | 425 mA / 1250 mA |
| Channel capacitance measurement range | N/A | N/A | 1 μF to 12 μF | 1 μF to 12 μF |
| PD auto-class discovery and power measurement | N/A | N/A | Yes | Yes |
| I2C programmable SRAM memory | N/A | N/A | 16 kB | 16 kB |