MAX5952AEVKIT Maxim Integrated, MAX5952AEVKIT Datasheet

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MAX5952AEVKIT

Manufacturer Part Number
MAX5952AEVKIT
Description
Power Management IC Development Tools Evaluation Kit/Evaluation System for the MAX5952A
Manufacturer
Maxim Integrated
Series
MAX5952r
Datasheet

Specifications of MAX5952AEVKIT

Product
Controllers & Switches
The MAX5952A evaluation kit (EV kit) is a fully assembled
and tested surface-mount circuit board featuring an
Ethernet four-port power-sourcing equipment (PSE) cir-
cuit for -48V supply rail systems. The IEEE 802.3af and
pre-802.3at-compliant MAX5952A PSE controller in a 36-
pin SSOP package and four n-channel power MOSFETs
are used to form the main power-sourcing equipment cir-
cuit on the EV kit. The MAX5952A is used in power-over-
Ethernet (PoE) applications requiring DC power over four
Ethernet network ports. The EV kit provides optical isola-
tion for the I
interface can connect to a PC’s USB port through a
CMAXQUSB interface board. The EV kit can easily be
reconfigured for interfacing to a user’s stand-alone micro-
controller for isolated or nonisolated operation. In stand-
alone operation, the user must supply a separate 3.3V
power supply capable of supplying 100mA for the EV kit’s
+3.3V optically isolated 3-wire interface.
The MAX5952A EV kit requires a -32V to -60V power
supply (-48V supply rail) capable of supplying 4A or
more to the EV kit for the power device (PD) through the
four 10/100BASE-TX Ethernet network ports. The EV kit
demonstrates PD discovery, classification, current-limit
control, and other functions of an IEEE 802.3af and pre-
802.3at-compliant PSE.
The MAX5952A controls the -48V DC power to each of
the four Ethernet network ports by controlling the port’s
power MOSFET and sensing current through the
respective port’s current-sense resistor. The current is
fed to a 10/100BASE-TX voice-over-IP magnetic mod-
ule at each Ethernet output port. The MAX5952A EV kit
provides a separate, independent power channel for
each of the four Ethernet output ports.
The EV kit demonstrates the full functionality of the
MAX5952A for each power channel such as config-
urable operational modes, high-power modes (pro-
grammable for up to 45W per port), port current
information through I
classification, overcurrent protection, current foldback,
under/overvoltage protection and AC-disconnect moni-
toring. All these features are configurable on the EV kit
and additional test points for voltage probing and cur-
rent measurements have been provided.
The EV kit software is Windows® 98SE/2000/XP com-
patible and provides a user-friendly interface to demon-
strate the features of the MAX5952A while also
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 test-
ing of the MAX5952A at the system level. The pro-
gram’s macro output files can be automatically saved.
19-4026; Rev 0; 2/08
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX5952A Evaluation Kit/Evaluation System
2
C-compliant 3-wire interface. The isolated
________________________________________________________________ Maxim Integrated Products
2
C interface, PD detection, PD
General Description
Order the MAX5952AEVCMAXQU for a complete PC-
based evaluation of the MAX5952A. Order the
MAX5952AEVKIT if you already have a CMAXQUSB
interface board or do not require PC-based evaluation
of the MAX5952A.
o IEEE 802.3af and Pre-802.3at-Compliant Power-
o High-Power Mode Programmable Up to 45W
o Port Current Readout Through I
o Input Voltages
o Ethernet Network Ports
o Demonstrates Four Separate Independent Power
o Provides PD Detection and Classification
o Configurable DC/AC Load Removal Detection and
o Configurable Current Sensing
o Convenient Voltage and Current Test Points
o Four Output-Port LED Status Indicators
o Optically Isolated 3-Wire I
o Reconfigurable for Stand-Alone Operation or with
o Windows 98SE/2000/XP-Compatible Software
o Fully Assembled and Tested
Windows is a registered trademark of Microsoft Corp.
Note: The MAX5952A EV kit software is provided with the
MAX5952AEVKIT. However, the CMAXQUSB interface board is
required to interface the EV kit to the computer when using the
software.
MAX5952AEVKIT
MAX5952AEVCMAXQU
Sourcing Equipment (PSE) Circuit
per Port
Disconnect Monitoring
an External Microcontroller (Requires +3.3V
100mA Supply)
-32V to -60V Providing 4A (-48V Power Circuit,
Four RJ-45 10/100BASE-TX Ethernet Network
Four RJ-45 10/100BASE-TX Ethernet Network
Switch Controllers
750mA/Port)
Input Ports
Output Power-Over-Ethernet Ports
PART
Ordering Information
2
C-Compliant PC Interface
2
C Interface
EV System
EV Kit
TYPE
Features
1

Related parts for MAX5952AEVKIT

MAX5952AEVKIT Summary of contents

Page 1

... For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Order the MAX5952AEVCMAXQU for a complete PC- based evaluation of the MAX5952A. Order the MAX5952AEVKIT if you already have a CMAXQUSB interface board or do not require PC-based evaluation of the MAX5952A. o IEEE 802.3af and Pre-802.3at-Compliant Power- ...

Page 2

... MAX5952A Evaluation Kit/Evaluation System MAX5952A EV System PART QTY MAX5952AEVKIT 1 MAX5952A evaluation kit 2 CMAXQUSB interface board MAX5952A EV Kit DESIGNATION QTY DESCRIPTION 220µF ±20%, 100V electrolytic C1 1 capacitor (18mm x 16.5mm) Panasonic EEVFK2A221M 1.0µF ±10%, 6.3V X5R ceramic capacitors (0603) C2 AVX 06036D105KA or Taiyo Yuden JMK107BJ105KA 220µ ...

Page 3

MAX5952A Evaluation Kit/Evaluation System DESIGNATION QTY DESCRIPTION FASTJACK RJ-45 jack (8P-8C ) with 10/100BASE-TX voice-over-IP magnetics (700mA DC) Halo Electronics HFJ24-MAX2E J3 1 Specific application recommendations Midspan: HFJ14-RP07-S2L11RL or HFJ24-RP07E Endspan: HFJ14-RP32-S2L11RL or HFJ24-RP32E JU1–JU8 8 3-pin ...

Page 4

MAX5952A Evaluation Kit/Evaluation System DESIGNATION QTY DESCRIPTION SPDT analog switch (6 SC70 Maxim MAX4599EXT+ Dual-output op amp (8 SOT23 Maxim LMX358AKA+ Dual universal switched-capacitor U4 1 filter (16 QSOP) Maxim MAX7491EEE+ 3V EconOscillator™/divider (8 µSOP) U5 ...

Page 5

... EV kit software. Text in bold and under- line refers to items from the Windows operating system. Hardware Connections 1) Visit the Maxim Integrated Products website (www.maxim-ic.com/evkitsoftware) to download the most recent version of the EV kit software 5952ARXX.ZIP. Save the EV kit software to a tempo- rary folder and uncompress the ...

Page 6

MAX5952A Evaluation Kit/Evaluation System 14) Connect the USB cable from the PC to the CMAXQUSB interface board. A Building Driver Database window should pop up in addition to a New Hardware Found message if this is the first time the ...

Page 7

MAX5952A Evaluation Kit/Evaluation System PD can be located up to 350ft from the EV kit when con- nected with twisted 4-pair Ethernet cable. The MAX5952A EV kit provides separate and independent power control for each of the four Ethernet output ...

Page 8

MAX5952A Evaluation Kit/Evaluation System 2 MAX5952A I C-Compatible 2-Wire or 3-Wire Slave The MAX5952A EV kit features several 3-pin jumpers (JU1, JU2, JU3, JU4) to set the slave address of the MAX5952A least significant bits (LSB) of the slave Table ...

Page 9

MAX5952A Evaluation Kit/Evaluation System Midspan/Signal Mode Selection The MAX5952A EV kit features a 3-pin jumper (JU5) to set the MAX5952A in midspan or signal mode. Table 2 lists the jumper options for the two modes used to detect a valid ...

Page 10

MAX5952A Evaluation Kit/Evaluation System Table 6. Jumper JU9 and Microcontroller PCB Pads Function JU9 PIN NO. ISOLATION MODE SHORT LOCATION 1 and 2 shorted* 3 and 4 shorted* 5 and 6 shorted* 7 and 8 shorted* 9 and 10 shorted* ...

Page 11

MAX5952A Evaluation Kit/Evaluation System AC-Disconnect Operation (Rectifier Diodes D1–D4) The MAX5952A EV kit features jumpers JU15–JU18 to bypass each port’s respective AC disconnect rectifier diode (D1–D4), thus reducing diode power dissipation when AC disconnect is not required. Table 7 lists ...

Page 12

MAX5952A Evaluation Kit/Evaluation System Table 9. -48V Port Power Interface Jumper Functions PORT JUMPER PCB TRACE SHORT Shorting trace intact Port 1 JU27 Shorting trace intact Port 2 JU28 Shorting trace intact Port 3 JU29 Shorting trace intact Port 4 ...

Page 13

MAX5952A Evaluation Kit/Evaluation System Figure 1. In the MAX5952A evaluation software’s events and status window for reading system and port events/status information, the current reading is not valid when the port is not enabled. Software Startup Upon starting the program, ...

Page 14

MAX5952A Evaluation Kit/Evaluation System Figure 2. MAX5952A Evaluation Software’s Configuration Window for Configuring the EV Kit as a 4-Port PSE mal formats. The Port Events section provides each PSE port event or change. The Port Status section provides each PSE ...

Page 15

MAX5952A Evaluation Kit/Evaluation System Figure 3. MAX5952A Evaluation Software’s BitMap Controls Window for Controlling the Software State, Configuring the MAX5952A Registers, Using the Macro Engine, and Displaying All the Registers in Binary and Hexadecimal Format and various power settings can ...

Page 16

MAX5952A Evaluation Kit/Evaluation System can be changed in the Commands | Red Hex Data Blink Rate menu. The left status bar at the bottom of the main window provides the CMAXQUSB interface board status. The center status bar provides the ...

Page 17

MAX5952A Evaluation Kit/Evaluation System The Hunt for active listeners button scans the entire 2-wire address space, reporting each address that is acknowledged. The SMBusWriteByte transmits the device address, command, and 1 byte of data. The SMBusReadByte transmits the device address, ...

Page 18

MAX5952A Evaluation Kit/Evaluation System Figure 5. MAX5952A EV Kit Schematic, Controller Circuit 18 ______________________________________________________________________________________ High-Power PSE for Power-Over-Ethernet ...

Page 19

MAX5952A Evaluation Kit/Evaluation System Figure 6. MAX5952A EV Kit Schematic, Optical Coupler Circuit ______________________________________________________________________________________ 19 ...

Page 20

MAX5952A Evaluation Kit/Evaluation System Figure 7. MAX5952A EV Kit Schematic, Network Interface 20 ______________________________________________________________________________________ ...

Page 21

MAX5952A Evaluation Kit/Evaluation System Figure 8. MAX5952A EV Kit Schematic, 100Hz Oscillator Circuit ______________________________________________________________________________________ 21 ...

Page 22

MAX5952A Evaluation Kit/Evaluation System C40 R46 0.015μF 1kΩ R48 R50 2Ω 2Ω NDRV U10 1 Q1 MAX5020 V+ 4 SS_SHDN VCC C43 2 0.022μF VDD GND VEE C41 0.47μF 100V Figure 9. MAX5952A EV Kit ...

Page 23

MAX5952A Evaluation Kit/Evaluation System Figure 10. MAX5952A EV Kit Component Placement Guide—Component Side ______________________________________________________________________________________ 23 ...

Page 24

MAX5952A Evaluation Kit/Evaluation System Figure 11. MAX5952A EV Kit PCB Layout—Component Side 24 ______________________________________________________________________________________ ...

Page 25

MAX5952A Evaluation Kit/Evaluation System Figure 12. MAX5952A EV Kit PCB Layout—GND Layer 2 ______________________________________________________________________________________ 25 ...

Page 26

MAX5952A Evaluation Kit/Evaluation System Figure 13. MAX5952A EV Kit PCB Layout—V 26 ______________________________________________________________________________________ Layer 3 CC ...

Page 27

MAX5952A Evaluation Kit/Evaluation System Figure 14. MAX5952A EV Kit PCB Layout—Solder Side ______________________________________________________________________________________ 27 ...

Page 28

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 28 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products ...

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