MAX5945EVKIT

MAX5945EVKIT Datasheet

MAX5945 Evaluation Kit/Evaluation System

Part	Datasheet
MAX5945EVKIT	MAX5945EVKIT (pdf)

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MAX5945 Evaluation Kit/Evaluation System Evaluate MAX5945 The MAX5945 evaluation kit EV kit is a fully assembled and tested surface-mount circuit board featuring an Ethernet four-port network power controller circuit for -48V supply rail systems. The MAX5945 IEEE 802.3afcompliant network power controller is available in a 36pin SSOP package. The circuit includes four n-channel power MOSFETs used to form the main power-sourcing equipment PSE circuit on the EV kit. The MAX5945 is used in power-over-ethernet POE applications requiring DC power over four Ethernet network ports. The EV kit provides optical isolation for the I2C-compliant 3-wire interface. The isolated interface connects to a PC parallel port LPT through a MAXSMBus interface board. The EV kit can easily be reconfigured for interfacing to a user’s stand-alone microcontroller for isolated or nonisolated operation. The MAX5945 EV kit requires a -32V to -60V power supply -48V supply rail capable of supplying 2A or more to the EV kit for powering the power device PD through the four 10/100 base-TX Ethernet network ports. The EV kit demonstrates PD discovery, classification, currentlimit control and other functions of an IEEE 802.3af-compliant PSE. The user must also supply two separate 3.3V power supplies capable of supplying 100mA for the EV kit’s digital logic and 3.3V VCC optically isolated 3-wire interface. The MAXSMBus interface board requires a dedicated 9V power supply capable of supplying 250mA. The +9V power supply is not required for nonisolated operation. The MAX5945 controls the -48V DC power to each of the four Ethernet network ports by controlling each port’s power MOSFET and sensing current through the respective port’s current-sense resistor. The current is fed to a 10/100 base-TX Voice-over-IP VoIP magnetic module at each Ethernet network output port. The MAX5945 EV kit provides a separate independent power channel for each of the four Ethernet network output ports. The EV kit demonstrates the full functionality of the MAX5945 for each power channel such as configurable operational modes, PD detection, PD classification, overcurrent protection, current foldback, under/overvoltage protection, and AC disconnect monitoring. All of these features are configurable on the EV kit and additional test points for voltage probing and current measurements have been provided. The MAX5945 EV kit software is 95/98/2000compatible and provides a user-friendly interface to demonstrate the features of the MAX5945 while providing access to each register at the bit level. The program is menu-driven and offers a graphic interface with control buttons. The program also includes a macro engine to allow automated evaluation and testing of the MAX5945 at the system level. The program’s macro output files can be automatically saved. Order the MAX5945EVSYS for a complete PC-based evaluation of the MAX5945. Order the MAX5945EVKIT if you already have a MAXSMBus interface board or do not require PC-based evaluation of the MAX5945. IEEE 802.3af-Compliant Power-Sourcing Equipment PSE Circuit Input Voltages -32V to -60V Providing 2A -48V Power Circuit, 350mA/Port +3.3V Providing 100mA Digital Logic Power VCC +3.3V Provides 100mA Optical Interface +9V Provides 250mA SMBus LPT Interface Board Ethernet Network Ports Four RJ-45 10/100 Base-TX Ethernet Network Input Ports Four RJ-45 10/100 Base-TX Ethernet Network Output Power-Over-Ethernet Ports Demonstrates Four Separate Independent Power Switch Controllers Provides PD Detection and Classification Configurable DC/AC Load Removal Detection and Disconnect Monitoring Configurable Current Sensing Convenient Voltage and Current Test Points Four Output-Port LED Status Indicators Optically Isolated 3-Wire I2C-Compliant PC Interface Reconfigurable for Stand-Alone Operation or with External Microcontroller Windows 95/98/2000-Compatible Software Fully Assembled and Tested Ordering Information PART TEMP RANGE IC PACKAGE SMBus INTERFACE TYPE Windows is a registered trademark of Microsoft Corp. MAX5945EVKIT 0°C to +70°C 36 SSOP Not included MAX5945EVSYS 0°C to +70°C 36 SSOP MAXSMBus Note The MAX5945EV kit software is provided with the MAX5945EVKIT. However, the MAXSMBUS interface board is required to interface the EV kit to the computer when using the software. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at MAX5945 Evaluation Kit/Evaluation System Evaluate MAX5945 MAX5945EVSYS MAX5945 EV System Component List PART MAX5945EVKIT MAXSMBus QTY 1 DESCRIPTION MAX5945 evaluation kit SMBus interface board DESIGNATION QTY 220µF ±20%, 100V electrolytic 1 capacitor 18mm x 16.5mm Panasonic EEVFK2A221M C2, C3 1.0µF ±10%, 6.3V X5R ceramic 2 capacitors 0603 Taiyo Yuden JMK107BJ105KA 10µF ±20%, 6.3V X5R ceramic 1 capacitor 1206 Taiyo Yuden JMK316BJ106ML C5, C8, C13, C15 0.47µF ±10%, 100V X7R ceramic 4 capacitors 1210 Vishay VJ1210Y474KXBAB 1.0µF ±20%, 100V X7R ceramic 1 capacitor 1210 TDK C3225X7R2A105M C7, C9, C16, C23, C30, C31, C38, C39 0.1µF ±10%, 16V X5R ceramic capacitors 0603 Taiyo Yuden EMK107BJ104KA C10, C11, C12, C17 Not installed ceramic capacitors 0805 3300pF ±10%, 50V X7R ceramic capacitors Murata GRM219R71H333K recommended 4.7µF ±10%, 6.3V X5R ceramic 1 capacitor 0805 Taiyo Yuden JMK212BJ475KG C18, 0.1µF ±10%, 100V X7R ceramic 21 capacitors 0805 TDK C2012X7R2A104K C19, C20, C21, C22, C24, C25 1000pF ±10%, 250VAC X7R UL ceramic capacitors 2010 Murata GA352QR7GF102K Component List

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MAX5945 Evaluation Kit/Evaluation System

Evaluate MAX5945

The MAX5945 evaluation kit EV kit is a fully assembled and tested surface-mount circuit board featuring an Ethernet four-port network power controller circuit for -48V supply rail systems. The MAX5945 IEEE 802.3afcompliant network power controller is available in a 36pin SSOP package. The circuit includes four n-channel power MOSFETs used to form the main power-sourcing equipment PSE circuit on the EV kit. The MAX5945 is used in power-over-ethernet POE applications requiring DC power over four Ethernet network ports. The EV kit provides optical isolation for the I2C-compliant 3-wire interface. The isolated interface connects to a PC parallel port LPT through a MAXSMBus interface board. The EV kit can easily be reconfigured for interfacing to a user’s stand-alone microcontroller for isolated or nonisolated operation.

The MAX5945 EV kit requires a -32V to -60V power supply -48V supply rail capable of supplying 2A or more to the EV kit for powering the power device PD through the four 10/100 base-TX Ethernet network ports. The EV kit demonstrates PD discovery, classification, currentlimit control and other functions of an IEEE 802.3af-compliant PSE. The user must also supply two separate 3.3V power supplies capable of supplying 100mA for the EV kit’s digital logic and 3.3V VCC optically isolated 3-wire interface. The MAXSMBus interface board requires a dedicated 9V power supply capable of supplying 250mA. The +9V power supply is not required for nonisolated operation.

The MAX5945 controls the -48V DC power to each of the four Ethernet network ports by controlling each port’s power MOSFET and sensing current through the respective port’s current-sense resistor. The current is fed to a 10/100 base-TX Voice-over-IP VoIP magnetic module at each Ethernet network output port. The MAX5945 EV kit provides a separate independent power channel for each of the four Ethernet network output ports.

The EV kit demonstrates the full functionality of the MAX5945 for each power channel such as configurable operational modes, PD detection, PD classification, overcurrent protection, current foldback, under/overvoltage protection, and AC disconnect monitoring. All of these features are configurable on the EV kit and additional test points for voltage probing and current measurements have been provided.

The MAX5945 EV kit software is 95/98/2000compatible and provides a user-friendly interface to demonstrate the features of the MAX5945 while providing access to each register at the bit level. The program is menu-driven and offers a graphic interface with control buttons. The program also includes a macro engine to allow automated evaluation and testing of the MAX5945 at the system level. The program’s macro output files can be automatically saved.

Order the MAX5945EVSYS for a complete PC-based evaluation of the MAX5945. Order the MAX5945EVKIT if you already have a MAXSMBus interface board or do not require PC-based evaluation of the MAX5945.

IEEE 802.3af-Compliant Power-Sourcing Equipment PSE Circuit

Input Voltages -32V to -60V Providing 2A -48V Power Circuit, 350mA/Port +3.3V Providing 100mA Digital Logic Power VCC +3.3V Provides 100mA Optical Interface +9V Provides 250mA SMBus LPT Interface Board

Ethernet Network Ports Four RJ-45 10/100 Base-TX Ethernet Network Input Ports Four RJ-45 10/100 Base-TX Ethernet Network Output Power-Over-Ethernet Ports

Demonstrates Four Separate Independent Power Switch Controllers

Provides PD Detection and Classification

Configurable DC/AC Load Removal Detection and Disconnect Monitoring

Configurable Current Sensing Convenient Voltage and Current Test Points

Four Output-Port LED Status Indicators

Optically Isolated 3-Wire I2C-Compliant PC Interface

Reconfigurable for Stand-Alone Operation or with External Microcontroller

Windows 95/98/2000-Compatible Software Fully Assembled and Tested
Ordering Information

PART

TEMP RANGE

IC PACKAGE

SMBus INTERFACE

TYPE

Windows is a registered trademark of Microsoft Corp.

MAX5945EVKIT 0°C to +70°C 36 SSOP Not included

MAX5945EVSYS 0°C to +70°C 36 SSOP MAXSMBus

Note The MAX5945EV kit software is provided with the MAX5945EVKIT. However, the MAXSMBUS interface board is required to interface the EV kit to the computer when using the software.

Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at

MAX5945 Evaluation Kit/Evaluation System

Evaluate MAX5945

MAX5945EVSYS MAX5945 EV System

Component List

PART MAX5945EVKIT MAXSMBus

QTY 1

DESCRIPTION MAX5945 evaluation kit SMBus interface board

DESIGNATION QTY
220µF ±20%, 100V electrolytic
1 capacitor 18mm x 16.5mm

Panasonic EEVFK2A221M

C2, C3
1.0µF ±10%, 6.3V X5R ceramic 2 capacitors 0603

Taiyo Yuden JMK107BJ105KA
10µF ±20%, 6.3V X5R ceramic
1 capacitor 1206

Taiyo Yuden JMK316BJ106ML

C5, C8, C13, C15
0.47µF ±10%, 100V X7R ceramic 4 capacitors 1210

Vishay VJ1210Y474KXBAB
1.0µF ±20%, 100V X7R ceramic 1 capacitor 1210

TDK C3225X7R2A105M

C7, C9, C16, C23, C30, C31,

C38, C39
0.1µF ±10%, 16V X5R ceramic capacitors 0603 Taiyo Yuden EMK107BJ104KA

C10, C11, C12, C17

Not installed ceramic capacitors
0805
3300pF ±10%, 50V X7R ceramic capacitors

Murata GRM219R71H333K
recommended
4.7µF ±10%, 6.3V X5R ceramic 1 capacitor 0805

Taiyo Yuden JMK212BJ475KG

C18,
0.1µF ±10%, 100V X7R ceramic
21 capacitors 0805

TDK C2012X7R2A104K

C19, C20, C21, C22, C24, C25
1000pF ±10%, 250VAC X7R UL ceramic capacitors 2010 Murata GA352QR7GF102K

Component List

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MAX5945EVKIT Datasheet file may be downloaded here without warranties.

Datasheet ID: MAX5945EVKIT 647373