PD64001 MICROSEMI | Alldatasheet
Document overview
- Manufacturer or author: pROVIDED bY alldatasheet.com(free datasheet download site)
- PDF pages: 9
Technical content
PPDD6644000011 11--PPoorrtt PPooEE MMaannaaggeerr DDaattaasshheeeett Preliminary Microsemi Analog Mixed Signal Group 1 Hanagar st., P.O/ Box 7220 Hod Hasharon 45421, Israel Tel: +972-9-7755100 Fax: +972-9-7755111 page 1 Copyright © 2008 Rev. 0.4 2008-05-08 The PD64001 is a single-port Power over Ethernet PSE (Power Source Equi pment) Manager. The PSE Manager allows for the detection of IEEE 802.3af- 2003 and IEEE802.3at/D3. 0 powered devices, ensuring safe power feeding and monitoring of Ethernet ports. With a minimum of external components, the PD64001 integrates in a one-port or two- port PoE-port switches and Midspans. The PD64001 has several operating modes, allowing it to be tailored to the customer application, be it a Switch or a Midspan, IEEE802.af or IEEE802.3at/D3.0-compliant, with 1-event or 2- events classification, AC or DC disconnect and strict resistor detection or legacy detection capabilities. It operates in a total stand-alone mode, with no need for user intervention. The PD64001 supports 2-events classification and operates at Iport_max currents of up to 720mA per port, making it fully compliant with the IEEE802.3at/D3.0 This datasheet includes a complete application note and provides detailed information and circuitry design guidelines for the implementation of a 1-port Power over Ethernet (PoE) system, based on Microsemi’s™ 1-channel PoE device- the PD64001. This document allows the designer to integrate PoE capabilities, as specified in the IEEE802.3af standard into an Ethernet switch, Midspan or a Router. ♦ IEEE802.3af-2003 ♦ IEEE802.3at/D3.0 ♦ IEEE 802.3af-2003-compliant ♦ IEEE802.3at/D3.0 compliant ♦ Supports Iport_max of 720mA ♦ Programmable solution, can be updated as the IEEE802.3at standard evolves ♦ Accurate power measuring and extremely low power dissipation ♦ BOM and software tailored for specific application saving total solution cost ♦ Minimal power supply stress and EMI noises ♦ Legacy (pre-standard) PD’s detection ♦ 1-port standalone PoE control ♦ 1-event and 2-event classification supported ♦ External FET and sense resistor ♦ AC and DC disconnect ♦ Detection of the disconnection method by assembled resistor ♦ Port On/Off Host interface ♦ Single operating voltage source ♦ Direct LED driving including IEEE802.3at indication ♦ SOIC-20 package ♦ RoHS compliant ♦ -40 oC to +85oC operating ambient temperature PART TEMP. RANGE PIN PACKAGE PD64001 -40°C to +85°C SOIC-20 Evaluation board ordering number - PD-IM-73001
PPDD6644000011 11--PPoorrtt PPooEE MMaannaaggeerr DDaattaasshheeeett Preliminary Microsemi Analog Mixed Signal Group 1 Hanagar st., P.O/ Box 7220 Hod Hasharon 45421, Israel Tel: +972-9-7755100 Fax: +972-9-7755111 page 2 Copyright © 2008 Rev. 0.4 2008-05-08 Feature Description PD64001 features IEEE 802.3af-2003 Compliant The PD64001 meets all IEEE-802.3af-2003 standard requirements such as:
- Multi – point resistor detection
- PD classification function
- AC disconnect and DC disconnect function
- Supports Back-off feature for Midspan implementation IEEE802.3at/D3.0 Compliant Including support for high power and 2-events classification. Single DC Voltage Input The PD64001 requires a single DC voltage source: 46V to 57V. No additional voltage sources (e.g. 3.3V/5V) are required for the PoE system’s operation. Wide temperature range: -40°c to +85°c The PD64001 can operate over a wide temperature range: -40°c to +85°c. This wide temperature range allows the integration of the PD64001, into small unventilated boxes and operates in harsh environments. Low thermal dissipation (1Ω sense resistor) The PD64001 has a very low thermal dissipation. The Rsense in PD64001 applications is only 1Ω to keep the peripheral components in low temperatures as well. External Power FET External Mosfet, increasing the flexibility of the solution and allowing it to be tailored for the power needs of the customer. H/W Disable Port The PD64001 utilizes a dedicated pin, allowing an immediate disconnection of the PoE port. This disable-port pin can be controlled via the Host CPU. Pre-Standard PD Detection Enables detection and powering of pre-standard power devices (PDs). Detection of Cisco Devices Enables detection and powering of all Cisco devices including pre-standard terminals. LED Support Direct driving of the LED circuitry. It allows the designer to implement a simple LED circuit, indicating whether an IEEE802.3af or IEEE802.3at device is connected.
PPDD6644000011 11--ppoorrtt PPooEE MMaannaaggeerr DDaattaasshheeeett Preliminary Microsemi Analog Mixed Signal Group 1 Hanagar st., P.O/ Box 7220 Hod Hasharon 45421, Israel Tel: +972-9-7755100 Fax: +972-9-7755111 page 3 Copyright © 2008 Rev. 0.4 2008-05-08 Application circuitry DC current ….………………25 mA ESD (Human Body Model)…………….……..… -2V to 2kV (1) Lead temperature (soldering, 10 s)……………. 300 °C Notes:. (1) 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. PARAMETER MIN. NOM. MAX. UNIT Operating temperature -40 +85 °C Storage temperature -65 +150 °C Operational limitations (1) 44 50 57 V (1) In order to get higher power drive at the PSE output ports, it is recommended to use operating voltage source greater then 50v DC Characteristics for Digital Inputs and Outputs PARAMETER SYMBOL MIN. MAX. UNIT REMARKS Pin Name xRESET Type Schmitt Trigger CMOS input with internal pull-up High level input voltage VIH 0.9 VCC VCC+0.5V V Vcc = 5V Low level input voltage VIL -0.5V 0.2 VCC V Vcc = 5V Input high current IIH +1 μA Input low current IIL +1 μA Reset assertion time Trst 2.5 μS Internal Pull-up value Rpu 30 60 k Ω Dynamic Characteristics PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Automatic recovery from overload shutdown TOVLREC value, measured from port shutdown (can be modified through control port) 8 s Automatic recovery from no-load shutdown TUDLREC value, measured from port shutdown (can be modified through control port) 1 s Microsemi's PD64001 enables building very low power dissipating PoE devices. For a single port, the system worst case power dissipation can be calculated as follows. Application Disconnection Method Iport_max Current Rsense (1Ω) Diode MOSFET PoE Manager Total
PPDD6644000011 11--PPoorrtt PPooEE MMaannaaggeerr DDaattaasshheeeett Preliminary Microsemi Analog Mixed Signal Group 1 Hanagar st., P.O/ Box 7220 Hod Hasharon 45421, Israel Tel: +972-9-7755100 Fax: +972-9-7755111 page 4 Copyright © 2008 Rev. 0.4 2008-05-08 PIN PIN NAME PIN TYPE PIN DESCRIPTION 1. LOW_R_DETECT Digital Output Low level resistance detection command 2. CURRENT_PWM Digital Output Current limit set PWM output 3. AC_WAVE Digital Output AC disconnect output wave 4. CLASS_PWM Digital Output Class voltage set PWM output 5. VCC VCC 5V Digital VCC 6. GND GND Digital ground 7. LED2 Digital Output LED2 output command 8. LED1 Digital Output LED1 output command 9. HIGH_R_DETECT Digital Output High level resistance detection command 10. XRESET Digital Input Reset command from host 11. VMAIN_MEAS Digital Output Vmain measurement command 12. PORT_OFF_IMEAS Digital I/O Port Off command/ current measurement input 13. R_DET_MEAS Digital I/O Port voltage measurement input 14. AC_MEAS Digital I/O AC disconnect measurement input 15. AVCC VCC 5V Analog VCC 16. AGND GND Analog ground 17. PRE_DET Digital Output Pre detection command 18. RESERVED1 Digital I/O Reserved 19. RMODE Digital Input POE manager mode setup 20. RESERVED2 Digital I/O Reserved This pin is connected to a resistor voltage divider. It allows the user to choose a combination of three features, as specified in the following table: R_mode Voltage ALT A ALT B CA P AT R26 (Ω)* 0.313 – 0.62 V X 1.02K 0.94– 1.25 V X 2.8K 1.563 – 1.87 V X X 5.23K 2.19 – 2. 5 V X X 8.87K 2.82– 3.1 V X X 14.7K 3.44 – 3.75 V X X 25.5K 4.06 – 4.375 V X X X 54.9K 4.68 – 5 V X X X No * R26 Pull-down's value depends on the actual mode, while for all of the modes, R25 Pull-up's value is 10Kohm. The ALT A / ALT B option is selecting between a PSE alternative A or PSE alternative B. For implementing a Midspan PSE use ALT B. The AT option is IEEE802.3at- Compliant in accordance with the IEEE802.3at/D3.0. The CAP option is pre standard Capacitor detection mode. General Application Description__ The circuit includes the following major interfaces with the Host board: Control A Reset control signal driven by the switch circuitry is used to reset the PoE circuit. This signal should be optically coupled by the Host in order to maintain the requirements for the 1500 Vrms isolation. Power Supply Mains The PoE system operates over a range of 44V to 57V. This power must be isolated from the switch supply and chassis by 1500 Vrms. Grounds There are several grounds used in the system: chassis, digital and analog. The chassis ground is connected to the switch’s chassis ground. This ground plane should be 1500Vrms isolated from the PoE circuitry as well as the power supply for the PoE circuitry. The digital and analog grounds are electrically the same ground. However, in order to reduce noise coupling, the grounds are physically separated and connected only at a single point. 5V Regulator A single port application includes a 5V regulator (Vcc) fed by the Vmain through D15, D16 zener diodes and provides up to 25mA which is used to power the CPU and external components in the PoE domain. The D15 and D16 should be selected for the application main voltage as follows: For 44V ≤ Vmain < 50V use 16V zener diode. For 50V ≤ Vmain ≤ 57V use 20V zener diode. If an adequate 5V power source is available, the 5V regulation circuitry can be removed and the zener diodes may be replaced by lower current (5mA) zener diodes but with same voltage requirements.
PPDD6644000011 11--ppoorrtt PPooEE MMaannaaggeerr DDaattaasshheeeett Preliminary Microsemi Analog Mixed Signal Group 1 Hanagar st., P.O/ Box 7220 Hod Hasharon 45421, Israel Tel: +972-9-7755100 Fax: +972-9-7755111 page 5 Copyright © 2008 Rev. 0.4 2008-05-08 Detailed Application Description__ (See Figure 1) The PD64001 performs a multitude of internal operations and PoE functions, requiring a bare minimum of external components. The device is based on Atmel's ATtiny461 MCU. Each PD64001 device handles one port. Figure 1 shows the device with its related components for a 1-port configuration. Mode Configuration - set by the resistor divider (R25/R26) tied in to the RMODE line. The values are fixed for each mode of operation and described in the "R Mode pin" section in this document. Line Detection Circuitry – when performing a line detection procedure, the PoE device utilizes certain voltage levels over the output port. These levels are produced by switched resistor dividers and sensed by the PD64001 in order to confirm a valid PD connection. Current Loop Circuitry – the current is controlled by Q3 MOSFET. The PD64001 supplies PWM signal via pin#2 with a constant duty cycle (depending on the R mode configuration). This PWM signal is filtered and utilized as t he current limit circuitry voltage reference. Sense Resistors – for each powered port, two 2-Ohm 2010 (1%) resistors connected in parallel (1-Ohm equivalent) are used in series with the output. In cases where the ambient temperature drops below 70 0C, or the product does not have to meet 802.3at power, a single 1-Ohm 2010 (1%) resistor is adequate. Classification Circuitry – After a port is investigated, the PD should be classified by a classification current signature. Two voltage levels are set over the port, derived from a reference voltage filtered from PD64001 pin#4 (PWM signal) and sent to an operational amplifier which controls Q3 MOSFET. Output port - The load resistance of the PD attached to the port is presented in parallel with R30. The resulting voltage developed across both resistances is monitored to establish the 802.3af/at compatibility. LED indication - The 1 port application may use the PD64001 LED1 and LED2 pins for system status indications as follows. PD operating Status LED1 LED2 IEEE802.3af – ON ON OFF IEEE802.3at – ON ON ON IEEE802.3af - OVL/SC Blink at 1Hz OFF IEEE802.3at - OVL/SC Blink at 1Hz Blink at 1Hz Vmain out of range Blink at 1Hz OFF
PPDD6644000011 11--ppoorrtt PPooEE MMaannaaggeerr DDaattaasshheeeett Preliminary Microsemi Analog Mixed Signal Group 1 Hanagar st., P.O/ Box 7220 Hod Hasharon 45421, Israel Tel: +972-9-7755100 Fax: +972-9-7755111 page 6 Copyright © 2008 Rev. 0.4 2008-05-08 100n 100V X7R PD-1206 To be removed in layout VPORT_NEG PD-DPAK FQD19N10 D15 DO-41 1N4745AP 2 1 50V 100n X7R PD-0805 APP V_LDO VMAIN_MEAS PD-SO8 MC78L05ABDR2G Vin 8Vout1 GND2 GND#33 GND#66 GND#77 NC1 4 NC2 5 R31 402K PD-0805 10V 2.2u X7R PD-0805 xRESET PD-SOT23 BSS123 R23 140K PD-0805 PORT_OFF_IMEAS V_LDO R25 10K PD-0603 V_LDO PD-SOT23 BSS123 SHORT C18 100n 16V X7R PD-0603 PD-SOT23 BSS123 PD-SOT23 BSS123 PD-0603 LOW_R_DETECT PD-SOW20 ATTINY461-20SU PB01 PB12 PB23 PB34 VCC5 GND6 PB47 PB58 PB69 PB7 10PA711 PA612 PA513 PA414 AVCC15 AGND16 PA317 PA218 PA119 PA020 470p 50V X7R PD-0603 Vcc R20 51.1K PD-0603 Vcc LOW_R_DETECT CURRENT_PWM CLASS_PWM xRESET AC_WAVE HIGH_R_DETECT PORT_OFF_IMEAS R32 402K PD-0805 Vcc PRE_DETECT Note: Optional VMAIN_MEAS RMODE CURRENT_PWM C12 1n 50V X7R PD-0603 Vcc R16 10K PD-0603 PD-SMA GS1G 2 1 U1A PD-SO8 KA358ADTF_NL U1B PD-SO8 KA358ADTF_NL CLASS_PWM C19 50V 1uF X7R PD-1206 PRE_DETECT R30 75K PD-0805 C10 50V X7R PD-0603 1 2 5.11K PD-0603 R_DET_MEAS_CLASS_OFF VmainNote 1 44V - 50V D15, D16 1N4747AP 1N4745AP 50V - 57V Note 1 Vmain LOW_R_DETECT R10 PD-0603 NELTRON-2213S-6P CH81-062V200 N.C C20 100n 16V X7R PD-0603 PD-SOT23 BAT64 C11 25V 22n X7R PD-0603 C21 100n 16V X7R PD-0603 Vmain Vcc Vcc R26 R MODE PD-0603 REGULATOR AC_WAVE R14 215K PD-0805 R12 PD-2010 R_DET_MEAS_CLASS_OFF R15 215K PD-0805 R18 15.4K PD-0603 R11 PD-2010 R_DET_MEAS_CLASS_OFF Vcc R19 4.87K PD-0805 R29 1.24K PD-0603 D16 DO-41 1N4745AP 2 1 VPORT_POS CURRENT_PWM HIGH_R_DETECT 16V 3.3nF X7R PD-0603 Figure 1: One Port Chipset Schematic Diagram
PPDD6644000011 11--ppoorrtt PPooEE MMaannaaggeerr DDaattaasshheeeett Preliminary Microsemi Analog Mixed Signal Group 1 Hanagar st., P.O/ Box 7220 Hod Hasharon 45421, Israel Tel: +972-9-7755100 Fax: +972-9-7755111 page 7 Copyright © 2008 Rev. 0.4 2008-05-08 Block QTY Reference Description PCB Footprint Manufacturer Manufacturer's Part Number
1 C4 CAP CRM 100nF 50V 10% X7R 0805 SMT PD-0805 Samsung CL21B104KBAC
1 C5 CAP CRM 2.2uF 10V 10% X7R 0805 SMT PD-0805 Sams ung CL21B225KPFNNNC 1 C6 CAP CRM 3.3nF 16V 10% X7R 0603 SMT PD-0603 TDK C1608X7R1C332K
1 C7 CAP CRM 100nF 100V 10% X7R 1206 SMT PD-1206 Samsung CL31B104KCFNNNE
1 C8 CAP CRM 470pF 50V 10% X7R 0603 SMT PD-0603 EPCOS B37931-K5471-K60
2 C10, C12 CAP CRM 1nF 50V 10% X7 R 0603 SMT PD-0603 EPCOS B37931-K5102-K60
1 C11 CAP CRM 22nF 25V 10% X7R 06 03 SMT PD-0603 Rohm MCH185CN223KK
C18, C20, C21 CAP CRM 100nF 16V 10% X7R 0603 SMT PD-0603 EPCOS B37931K9104K60
1 C19 CAP CRM 1uF 50V 10% X7R 120 6 SMT PD-1206 TDK C3216X7R1H105K
1 D3 DIO REC 400V 1A SMA SMT PD-SMA Pan Jit GS1G
1 D5 DIO SCHOT 30V 200mA SNGL SOT23 SMT PD-SOT23 Infineon BAT64
2 D15, D16 DIODE 16V 1W 5% D 041 Insert DO-41 Microsemi 1N4745AP
1 Q3 FET NCH 100V 13A 0.12R DPAK SMT PD-DPAK Fairchild FQD19N10 Q5, Q6, Q7, Q8 FET NCH 100V 0.15A 6R Logic Level SOT23 PD-SOT23 Infineon BSS123 1 R6 RES 5.11K 62.5mW 1% 0603 SMT MTL FLM PD-0603 Samsung RC1608F5111CS 1 R7 RES 1K 62.5mW 1% 0603 SMT MTL FLM PD-0603 Rohm MCR03EZHEF1001 1 R10 RES 1K 62.5mW 1% 0603 SMT MTL FLM PD-0603 Samsung RC1608F1001CS 2 R11, R12 RES 2R 0.75W 1% 2010 SM T TCK FLM PD-2010 KOA RK73H2HTTE2R00F 2 R14, R15 RES 215K 0.125W 0.5% 0805 PD -0805 Yageo RT0805DRD07215K 2 R16, R25 RES 10K 62.5mW 1% 0603 SM T MTL FLM PD-0603 Rohm MCR03EZHEFX1002 1 R18 RES 15.4K 62.5mW 1% 0603 SMT TCK FLM PD-0603 Samsung RC1608F1542CS 1 R19 RES 4.87K 125mW 1% 0805 SM T TCK FLM PD-0805 XXX XXX 1 R20 RES 51.1K 62.5mW 1% 0603 SMT MTL FLM PD-0603 Samsung RC1608F5112CS
1 R23 RES TCK FLM 140K 1% 125mW 0805 SMT PD-0805 Samsung RC2012F1403CS
1 R26 R mode PD-0603
1 R29 RES 1.24K 62.5mW 1% 0603 SM T TCK FLM PD-0603 ASJ CR16-1241FL
1 R30 RES 75K 125mW 1% 0805 SMT TC K FLM PD-0805 Rohm MCR10EZHEF7502
2 R31, R32 RES 402K 125mW 1% 0805 SMT MTL FLM PD-0805 Yageo RC0805FRF07402K
1 U1 OP AMP DUAL 32V LOW OFFSET SO8 PD-SO8 Fairchild KA358ADTF_NL
1 U2 IC VOLT REG 5V 0.1A 4% SO 8 SMT PD-SO8 ON Semi MC78L05ABDR2G 1 port Chipset Circuitry
1 U3 Microcontroller 2K 8-bit SOIC-20 SMT PD-SOW20 Microsemi PD64001
PPDD6644000011 11--ppoorrtt PPooEE MMaannaaggeerr DDaattaasshheeeett Preliminary Microsemi Analog Mixed Signal Group 1 Hanagar st., P.O/ Box 7220 Hod Hasharon 45421, Israel Tel: +972-9-7755100 Fax: +972-9-7755111 page 8 Copyright © 2008 Rev. 0.4 2008-05-08 Microsemi’s PD64001 is housed in a 20-lead, 0.300" Wide, Plastic Gull Wing Small Outline Package (SOIC).
PPDD6644000011 11--ppoorrtt PPooEE MMaannaaggeerr DDaattaasshheeeett Preliminary Microsemi Analog Mixed Signal Group 1 Hanagar st., P.O/ Box 7220 Hod Hasharon 45421, Israel Tel: +972-9-7755100 Fax: +972-9-7755111 page 9 Copyright © 2008 Rev. 0.4 2008-05-08
Revision History
Revision Level / Date Para. Affected Description 0.1 / 26 November. 07 - Initial Release 0.2 / 25 December 07 Introduction Introduction, Features and ordering information added 0.3 / 28 March 08 schematic diagram Schematic diagram and BOM has been updated 0.4 / 04 May 08 Whole document schematic diagram General updates Schematic diagram and BOM had been updated © 2008 Microsemi LTD. All rights reserved. Visit our web site at: www.microsemi.com Catalog Number: 06-0068-058