PM8805

PM8805 IEEE 802.3bt PoE-PD interface with embedded dual active bridge VFQFPN43 8x8mm exposed pad Features  Dual active bridge, hot swap MOSFETand PoE-PD interface in a system-in-package  100 V N-ch MOSFETs with 0.2 Ω total path resistance for each active bridge.  100 V, 0.1 Ω high-side N-ch hot swap MOSFET  PoE-PD single-signature interface compliant with IEEE 802.3bt / at / af  Supports 4-pair PoE applications  Supports 12 V auxiliary sources  Identifies which kind of PSE (standard or legacy) is connected with and provides successful IEEE802.3bt / at / af classification indication as a combination of the T0, T1 and T2 signals (open drain)  Smart operational modes  Programmable classification current with 3.3 ms delay.  Optional Autoclass feature  Advanced energy-saving MPS timings  Two-step hot swap current protection: DC with 1 ms delay and short-circuit with 10 us delay.  Controlled pre-charge of the output capacitor  PGD signal (open drain) to enable an external PWM controller.  Thermal shutdown protection Datasheet - Production data Applications  High power wireless data systems  Security cameras  Access points  Public information displays  PoE lighting systems Description The PM8805 is a system-in-package for smart power supply of Power over Ethernet (PoE) Powered Devices (PD) and it is applicable for power level up to 99.9 W. It embeds: two active bridges and their driving circuitry, a charge pump to drive the high-side MOSFETs, the hot swap MOSF...