MAX5954LEVKIT Maxim Integrated, MAX5954LEVKIT Datasheet - Page 4

• Manufacturer Part Number: MAX5954LEVKIT
• Description: Power Management IC Development Tools Evaluation Kit/Evaluation System for the MAX5954L/MAX5954A
• Manufacturer: Maxim Integrated
• Series: MAX5954r

1) Verify that a shunt is not installed on jumper JU1
2) Verify that shunts are installed on pins 2 and 3 of
3) Utilizing short 10A-rated banana leads (< 12in
4) Utilizing short 10A-rated banana leads (< 12in
5) Connect the 3.3V DC power supply to the VIN3
6) Connect a voltmeter to the 12V pad or test point
7) Connect the CMAXQUSB interface board to the
8) Set both CMAXQUSB interface board SW1 switches
9) Install the MAX5954L evaluation software on your
10) Turn on the 12V and 3.3V power supplies for the EV
11) Connect the included USB cable from the PC to the
4
MAX5954L Software and Hardware Configuration
_______________________________________________________________________________________
(PRES-DET) and a shunt is installed on jumper JU2
(MRL).
jumpers JU3 and JU4 (computer control) on the
EV kit.
long), connect the 12V DC power supply to the
VIN1 banana jack. Utilizing short 10A-rated
banana leads (< 12in long), connect the supply
ground to the GND banana jack.
long), connect the 3.3V DC power supply to the
VIN2 banana jack. Utilizing short 10A-rated
banana leads (< 12in long), connect the supply
ground to the GND banana jack.
banana jack with a short banana lead.
TP13 and GND. Connect a voltmeter to the 3.3V
pad or test point TP16 and GND. Connect a volt-
meter to the 3.3VAUX pad or test point TP19
and GND.
MAX5954L EV kit’s J4 connector.
to enable. These provide pullup resistors for the
SDA and SCL 2-wire bus signals.
computer by running the INSTALL.EXE program on
the CD-ROM disk. The program files are copied
and icons are created for them in the Windows Start
Menu. Restart the computer when prompted. For
Windows 2000 and XP, you may need administrator
privileges.
kit. The CMAXQUSB interface board is powered
through the computer’s USB port.
CMAXQUSB interface board. A Building Driver
Database window should pop up in addition to a
New Hardware Found message. If you do not see
any window that is similar to the one described
above after 30s, try removing the USB cable from
the CMAXQUSB interface board and reconnect it
again. Administrator privileges are required to install
the USB device driver on Windows 2000 and XP.
MAX5954L Evaluation Kit/Evaluation System
12) Follow the directions of the Add New Hardware
13) Start the MAX5954L program by opening its icon in
14) Install the shunt on jumper JU1 (PRES-DET) or
15) The software detects the CMAXQUSB interface
See the MAX7313 Input/Output Expander and SMBus
Interface section for configuring the input/output
expander, using the CMAXQUSB interface board. See
the Detailed Description of Software in this document
for more information on the software GUI features.
The MAX5954L EV kit demonstrates a PCI Express x16
single hot-plug circuit design. A PCI Express x16 single
channel is provided to evaluate a PCI Express x16 line
card. The EV kit uses a latching MAX5954L hot-plug
controller in a 36-pin TQFN package to control the out-
put power and monitor for faults.
The MAX5954L IC controls output power independently
and external n-channel MOSFETs are used to control
power to the 12V and 3.3V outputs. Current-sensing
resistors (R1, R15) are used for monitoring current at
the 12V and 3.3V outputs. An internal MOSFET on the
MAX5954L controls the 3.3V-auxiliary output.
If an overcurrent fault persists, the MAX5954L shuts
down the channel. The fault is reported at the open-
drain power-good pin (PWRGD) and fault pin (FAULT).
The MAX5954L power-on reset (POR) is configured for
a default value of 160ms; however, the POR can be
reconfigured by installing resistor R11.
Slide switches are provided to enable/disable the main
output (SW3) and auxiliary (SW2) 3.3V output indepen-
dently when the SMBus control is not used. Jumper
JU1 can be used to provide a presence-detect function
if a PCI Express card is not used. Momentary pushbut-
ton switch SW1 is provided to demonstrate the
MAX5954L debounced logic gate input andoutput signals.
Wizard to install the USB device driver. Choose the
Search for the best driver for your device option.
Specify the location of the device driver as
C:\Program Files\MAX5954L using the Browse but-
ton. Refer to the document Troubleshooting USB.PDF
included with the software for more information.
the Start Menu.
insert a PCI Express card into connector J1.
board, the SMBus address of U2, and updates the
status screen. The software is then ready for
changes in the command section.
Detailed Description
of Hardware