TPS2384APAP

Product Summary

The TPS2384APAP is a quad-port power sourcing equipment power manager (PSEPM) and is compliant to the Power-over-Ethernet (PoE) IEEE 802.3af standard. The TPS2384APAP operates from a single 48-V supply and over a wide temperature range (-40℃ to +125℃). The integrated output eliminates 2 external components per port (FET and sense resistor) and will survive 100-V transient. Four individual 15-bit A/D converters are used to measure port resistance, voltage, current and die temperature making PSE solution simple and robust. The TPS2384APAP comes with a comprehensive software solution to meet the most demanding application which can serve as a core for all PoE system designs. The TPS2384APAP has three internal supply buses (10 V, 6.3 V and 3.3 V) generated from the 48-V input supply. These supplies are used to bias all internal digital and analog circuitry. Each supply has been brought out separately for proper bypassing to insure high performance. The digital supply (3.3 V) is available for powering external loads up to 2 mA. For more demanding loads it is highly recommended to use external buffers to prevent system degradation. When the TPS2384APAP is initially powered up an internal Power-on-Reset (POR) circuit resets all registers and sets all ports to the off state to ensure that the device is powered up in a known safe operating state. The TPS2384APAP has three modes of operation; auto mode (AM), semi-auto mode (SAM) and power management mode (PMM).

Parametrics

TPS2384APAP absolute maximum ratings: (1)V10 current sourced: 100 μA; (2)V3.3 current sourced: 5 mA; (3)Applied voltage on CINT#, CT, RBIAS: .-0.5 to +10V; (4)Applied voltage on SCL_I, SDA_I, SDA_O, INTB, A1, A2, A3, A4, A5, MS, PORB, WD_DIS, ALT_A/B, AC_LO, AC_HI: -0.5 to +6 V; (5)Applied voltage on V48, P#, N#: -0.5 to +80V; (6)Junction operating temperature TJ: -40 to 125℃; (7)Storage temperature Tstg: -55 to 150℃; (8)Lead temperature (soldering, 10 sec.) Tsol: 260℃.

Features

TPS2384APAP features: (1)Quad-Port Power Management With Integrated Switches and Sense Resistors; (2)Compliant to IEEE 802.3af Standard; (3)Operates from a Single 48-V Input Supply; (4)Individual Port 15-bit A/D; (5)Auto, Semi-Auto and Power Management Operating Modes; (6)Controlled Current Ramps for Reduced EMI and Charging of PD’s Bulk Capacitance; (7)I2C Clock and Oscillator Watch Dog Timers; (8)Over-Temperature Protection; (9)DC and DC Modulated Disconnect; (10)Supports Legacy Detection for Non-Compliant PD; (11)Supports AC Disconnect; (12)High-Speed 400-kHz I2C Interface; (13)Comprehensive Power Management Software Available; (14)Operating Temperature Range -40℃ to 125℃.

Diagrams