TPS2378/9 (PD only):
- Compliance to IEEE 802.3at
- 0.5-Ohm typ. hotswap
- TPS2378 has adapter higher priority, TPS2379 has gate pin to drive an external hotswap
TPS23751/2 (PD + PWM controller):
- Compliance to IEEE 802.3at
- 0.5-Ohm typ. hotswap
- Flyback with secondary side regulation only (no internal error amplifier)
- Sleep mode (disable DC/DC, TPS23752 only) and high efficiency light load mode (automatically reduce switching frequency at light load)
- Support adapter priority
TPS23754/6 (PD + PWM controller):
- Compliance to IEEE 802.3at
- 0.5-Ohm typ. hotswap
- TPS23754 has 15-V Vc UVLO; TPS23756 has 9-V Vc UVLO(used for low-voltage DC adapter case).
- Both support flyback/ACF-active clamping forward (no internal error amplifier for both)
- Support adapter priority & low voltage PD input
TPS23731/4 (PD + PWM controller), newest:
- Compliance to IEEE 802.3bt, at
- 0.3-Ohm typ. hotswap
- TPS23731 supports flyback; TPS23734 supports flyback/ACF (both have internal error amplifier, can be configured to low side SW Buck converter)
- Support primary side regulation (no need for OPTO feedback)
- Support auto maintain power signature
- Programmable frequency dithering for EMI
- Support soft-stop
- Support adapter priority