12-channel PoE Manager

Preliminary Datasheet 12-channel PoE Manager Features ____________________ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ IEEE 802.3af-2003 compliant Drives 12 independent power ports Can be cascaded for up to 48 ports, using a master/slave architecture Supports IETF Power Ethernet MIB (RFC 3621) Thermal protection per port Thermal monitoring capabilities Multi-point resistor detection Supports DC modulation method under-current detection according to IEEE 802.3af-2003 AC & DC disconnect functions PD classification function Operates from single input (44 to 57 V) I2C bus interface Supports foldback current limiting Digitally programmable overcurrent protection per port Digitally programmable timers Power management algorithm for up to 48 ports Internal power-on reset Power soft-start algorithm Fast power shutdown, in case of power supply failure Automatic on/off sequencer for up to 48 ports Disable/enable power feeding Continuous port current monitoring Supports back-off feature for Midspan implementation Additional features for Enhanced mode: PD64012 Description __________________ PowerDsine’s™ PD64012 Power over Ethernet (PoE) Manager chip integrates power, analog and logic functions into a single 64-pin, plastic pack. It is used in Ethernet switches and Midspans to allow next generation network devices to share power and data over the same cable. The device is a twelve-port, mix-signal, high-voltage Power over Ethernet driver. The PoE Manager allows the detection of IEEE 802.3af-2003 compliant terminals, referred to as powered devices or PDs, ensuring safe power feeding and removal over Ethernet ports. With full digital control via a serial communication interface and a minimum of external components, the device integrates in multi-port and highly populated Ethernet switches. The PD64012 implements all real time functions according to IEEE 802.3af-2003, including: detection, classification, and port status monitoring; as well as system level activities such as: power management and MIB support, for system management. The PoE Manager is designed to detect and disable disconnected ports, using both DC and AC disconnect methods, as defined in IEEE 802.3af2003. www.DataSheet4U.com The PD64012 has two possible working configurations: an Auto mode (stand-alone topology) for basic PoE functions and an Enhanced mode for extended functions. Pin Configuration _____________ PORT_SENSE0 PORT_SENSE1 PORT_SENSE2 PORT_SENSE3 PORT_SENSE4 PORT_SENSE5 VPORT_NEG0 VPORT_NEG1 VPORT_NEG2 VPORT_NEG3 VPORT_NEG4 VPORT_NEG5 SENSE_NEG Reserved Reserved AGND ♦ VPORT_POS0 VPORT_POS1 VPORT_POS2 VPORT_POS3 VPORT_POS4 VPORT_POS5 VPORT_POS6 VPORT_POS7 VPORT_POS8 VPORT_POS9 VPORT_POS10 VPORT_POS11 VMAIN CP_IN CP_OUT REF_PORT_NEG 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 TEST_MODE 18 VPORT_NEG11 19 AGND 20 21 22 23 24 25 26 27 28 29 30 31 32 48 47 46 VPERI EXT_REG ADC2p5 QGND I2CINI VCC2p5 ASICINI IREF RESET_N SDA SCL SCK MOSI MISO CS0_N DGND PD64012 45 44 43 42 41 40 39 38 37 • • • • • UART interface Pre-standard PD detection Supports non-standard terminals Advanced power management Programmable port matrix 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 04202AL1W07 Ordering Information PART PD64012 TEMP. RANGE -20 to +85 °C PIN PACKAGE LQFP-64 36 35 34 33 Date code: see the bottom line (04202AL1W07) in the Pin Configuration drawing. “0420” is the date code. “04” the year (2004), while “20” is the week. DISABLE_PORTS PORT_SENSE11 PORT_SENSE10 VPORT_NEG10 PORT_SENSE9 PORT_SENSE8 PORT_SENSE7 PORT_SENSE6 VPORT_NEG9 VPORT_NEG8 VPORT_NEG7 VPORT_NEG6 PowerDsine CS1_N The Power over Ethernet Pioneers This document contains information that is proprietary to PowerDsine. As such, it is confidential and its disclosure is strictly prohibited by applicable law. If you and/or your company and PowerDsine have executed a Non-Disclosure Agreement, then this document is being provided in connection with the Agreement, and the information contained herein is covered by the Agreement and under its terms may not be disclosed or used and must be protected by you and/or your company. PD64012 12-CHANNEL PoE MANAGER Maximum Ratings ______________________________________________ Vmain………………………………………………… -0.3 to 80 V(1) DGND, AGND, QGND, SENSE_NEG…………..-0.3 to 0.3 V(2) -0.3 to 80 V(1) MISO, MOSI, SCK, SCL, SDA, CLK, RESETN, CS0_N, CS1_N….………... -0.3 to (VPERI + 0.3) V VPORT_POSx ………………………………..…… VPORT_NEGx, REF_PORT_NEG VPORT_POSx - VPORT_NEGx ESD (Human Body Model)…………….….… -2 to 2 kV(3) Max junction temperature (Tjunc)…………..…+150 °C Junction-ambient thermal resistance (θJA)….. 25 °C/W Junction-case thermal resistance (θJC)………16 °C/W Lead temperature (soldering, 10 s)…………. 300 °C Storage temperature…………………………..-40 to +125 °C PORT_SENSEx…………………………..……… -0.3 to 15 V VCC2p5, ADC2p5………….………………………... -0.3 to 3 V VPERI……………………………..…………………. 4 V EXT_REG……………………………………..…… -0.3 to 6 V I2CINI, ASICINI…………………………………… -0.3 to 3 V . Notes: “x” defines port numbers, 0 thru 11, inclusive. (1) 80 V is the transient voltage that can be applied for at most one minute. (2) Maximum value between grounds. (3) ESD testing is performed in accordance with the Human Body Model (CZap = 100 pF, RZap = 1500 Ω). Stresses beyond those listed above, may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods, may affect device reliability. Operating Conditions ___________________________________________ PARAMETER Operating temperature Operational limitations (1) (1) MIN. -20 15 to 44 44 to 55 NOM. +85 55 to 57 MAX. UNIT °C V Operating functions depend on the input voltage, as shown in the distribution of Figure 1. AC Disconnect (only up to 55 V) PoL 802.3af Compliance (from 44 to 57 V) Communications (operates over entire range) 15 44 55 57 V Figure 1 - Operational Ranges Electrical Characteristics ________________________________________ DC Characteristics for Digital Inputs and Outputs PARAMETER Pin Name Type High level input voltage Low level input voltage Input voltage hysteresis Input high current Input low current SYMBOL MIN. MAX. UNIT DISABLE_PORTS Schmitt Trigger CMOS input, TTL level with internal pullup VIH 2.0 V VIL 0.8 V 0.3 V IIH +10 +150 µA IIL NA NA µA REMARKS www.powerdsine.com 06-0003-058 (Rev. 2.8) / 5 August 2004 2 Information in this document subject to change without prior notice. © PowerDsine 2003 PD64012 12-CHANNEL PoE MANAGER DC Characteristics for Digital Inputs and Outputs (continued) PARAMETER Pin Name Type High level input voltage Low level input voltage Input voltage hysteresis Input high current Input low current Pin Name Type High level input voltage Low level input voltage Input voltage hysteresis Input high current Input low current High level output voltage Low level output voltage Tri state output current Pin Name Type High level input voltage Low level input voltage Input voltage hysteresis OFF state output current SYMBOL MIN. MAX. UNIT SCL Schmitt Trigger CMOS input, TTL level with internal pullup VIH 2.0 V VIL 0.8 V 0.3 V IIH NA NA µA IIL -150 -10 µA MOSI, MISO, CS0_N, CS1_N, SCK CMOS I/O, TTL level with no internal pull up/pull down resistor VIH 2.0 V VIL 0.8 V 0.3 V IIH -1 +1 µA IIL -1 +1 µA VPERI-0.4V V Iout = 3 mA 0.4 V Iout = 3 mA -1 +1 µA RESET_N, SDA CMOS open drain output with Schmitt Trigger input, TTL level 0.4 V Iout = 3mA VIL 0.8 V 0.3 V -1 +1 µA REMARKS Electrical Characteristics for Analog I/O Pads PARAMETER Pin Name Operating voltage Pin current consumption Pin Name Operating voltage Internal current consumption Pin Name Operating voltage Vmain current consumption Pin Name Operating voltage Pin current consumption Pin Name ADC2p5 output voltage ADC2p5 internal current consumption VCC2p5 output voltage VCC2p5 internal current consumption VPERI output voltage VPERI external current load EXT_REG output current MIN. MAX. UNIT REMARKS VPORT_POSx, VPORT_NEGx, REF_PORT_NEG 44 62 V Port driver off, Vport differential measurement off, AC -5 +5 µA generator off PORT_SENSEx With external 2 ohms (1%) to ground 0 1.48 V 20 µA VMAIN 44 57 V Total on Vmain 20 mA CP out 44 67 V 5 mA ADC2p5, VCC2p5, VPERI, EXT_REG 2.45 2.55 V 6 2.37 3.13 2.62 5 3.46 6 6 mA V mA V mA mA Recommended external cap. = 47 to 135 nF Recommended external cap. = 47 to 135 nF Recommended external cap. = 1 to 4.7 µF Without external NPN When using external NPN for VPERI www.powerdsine.com 06-0003-058 (Rev. 2.8) / 5 August 2004 3 Information in this document subject to change without prior notice. © PowerDsine 2003 PD64012 12-CHANNEL PoE MANAGER Electrical Characteristics for Analog I/O Pads (continued) PARAMETER Pin Name Operating voltage Current consumption Pin Name Output voltage MIN. MAX. ASICINI, I2CINI 0 ADC2p5 -1 +1 IREF 1.21 1.34 UNIT V µA V With external 24.9 kΩ resistor to ground REMARKS Dynamic Characteristics The PD64012 is an advanced power-limiting device that uses three programmable current level thresholds (Imin, Icut, Ilim) and two timers (Tmin, Tcut ), to operate as shown in Figure 2. Loads that dissipate more than Icut for longer than Tcut (OVL_S to OVL) are classified as overloads and are automatically shutdown. Output power dissipation below Imin for during more than Tmin (UDL_S to UDL) will be classified as no-load and will also be shutdown. Automatic recovery from overload and no-load conditions are attempted every TOVLREC and TUDLREC periods (typically 5 and 1 seconds, respectively). In any case, output power is limited to Ilim, which is a maximum peak