MAX5954LEVKIT Maxim Integrated, MAX5954LEVKIT Datasheet

MAX5954LEVKIT

Manufacturer Part Number

MAX5954LEVKIT

Description

Power Management IC Development Tools Evaluation Kit/Evaluation System for the MAX5954L/MAX5954A

Manufacturer

Maxim Integrated

Series

MAX5954r

Datasheet

1.MAX5954LEVKIT.pdf (14 pages)

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The MAX5954L evaluation kit (EV kit) is a fully assem-

bled and tested surface-mount single hot-plug con-

troller PC board for a single PCI Express™ hot-plug

slot. The circuit uses a MAX5954L IC in a 36-pin thin

QFN package. The EV kit provides independent power

control for the 12V, 3.3V, and 3.3V-auxiliary outputs of a

single PCI-Express x16 connector. The EV kit demon-

strates the MAX5954L IC’s inrush current control,

output overcurrent/short-circuit protection and input

undervoltage monitoring features.

The MAX5954L IC controls two separate external

n-channel MOSFETs for the 12V and 3.3V outputs,

respectively. Additionally, the MAX5954L has an inter-

nal MOSFET that controls the 3.3V-auxiliary output.

Switches are provided to independently enable/disable

the 12V/3.3V main and 3.3V-auxiliary supplies.

The MAX5954L EV kit can be reconfigured for evaluat-

ing a x1, x4, or x8 PCI Express single hot-plug design.

Alternatively, the EV kit can also be used to demon-

strate the MAX5954L hot-plug features without using

the PCI Express x16 connector.

The EV kit includes a MAX7313 I/O expander that

enables communication through an SMBus™ interface

for the MAX5954L signals and some of the PCI Express

signals. A CMAXQUSB interface board can be used to

enable PC communication through the SMBus inter-

face. Windows® 98-/2000-/XP-compatible GUI software

is provided to access the MAX7313 I/O expander and

MAX5954L signals. The MAX5954L EV kit can also be

used in local control, without any software, or interfaced

to a user-provided SMBus system signal.

Order the MAX5954LEVCMAXQUSB for a complete PC-

based evaluation of the MAX5954L. Order the

MAX5954LEVKIT if you already have a CMAXQUSB

interface board or do not require PC-based evaluation

of the MAX5954L.

19-3907; Rev 0; 11/05

*Temp range is 0°C to +70°C for all parts.

**EP = Exposed paddle.

Note: The MAX5954L EV kit software is provided with the

MAX5954LEVKIT. However, the CMAXQUSB interface board is

required to interface the EV kit to a computer when using the

software.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

MAX5954LEVKIT

MAX5954LEVCMAXQUSB

MAX5954L Evaluation Kit/Evaluation System

PART*

________________________________________________________________ Maxim Integrated Products

Ordering Information

General Description

36 TQFN-EP**

PACKAGE

INTERFACE

Not included

CMAXQUSB

SMBus

TYPE

♦ Demonstrate PCI Express x16 Single Hot-Plug

♦ Independent Output Controls

♦ Evaluate Hot-Plugging PCI Express x1, x4, x8, or

♦ Demonstrate Input Inrush Current Control

♦ Demonstrate Output Overcurrent/Short-Circuit

♦ Monitor Input Undervoltage for 12V, 3.3V, and

♦ Configurable Power-On Reset (POR)

♦ Independent On/Off Controls for 12V/3.3V

♦ Independent 3.3V-Aux Output with Separate

♦ Latched Output After Fault Conditions (12V, 3.3V,

♦ Input/Output Interface Using a MAX7313 I/O

♦ Can be Controlled Locally without Software

♦ Windows 98-/2000-/XP-Compatible Software

♦ Surface-Mount Components

♦ Fully Assembled and Tested

PCI Express is a trademark of PCI-SIG Corp.

SMBus is a trademark of Intel Corp.

Windows is a registered trademark of Microsoft Corp.

MAX5954LEVKIT

CMAXQUSB

Design

x16 Line Cards

Protection

3.3V-Aux with Status Reports

On/Off Control

3.3V-Aux)

Expander (SMBus Interface) or Local Control

12V and Up to 5.5A (Adjustable)

3.3V and Up to 3A (Adjustable)

3.3V-Aux and Up to 0.375A

PART

MAX5954LEVCMAXQUSB

(MAX5954L EV System)

QTY

MAX5954L evaluation kit

SMBus interface board

Component List

DESCRIPTION

Features

Related parts for MAX5954LEVKIT

MAX5954LEVKIT Summary of contents

Page 1

... TQFN-EP** *Temp range is 0°C to +70°C for all parts. **EP = Exposed paddle. Note: The MAX5954L EV kit software is provided with the MAX5954LEVKIT. However, the CMAXQUSB interface board is required to interface the EV kit to a computer when using the software. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’ ...

Page 2

... N1 (SO-8) Vishay Si7448DP-T1 0.008Ω ±2%, 0.5W sense resistor (2010 IRC LRC-LRF2010-01-R008-G or Vishay WSL20108L000F 2 _______________________________________________________________________________________ MAX5954LEVKIT Component List DESIGNATION QTY DESCRIPTION R2 1 750Ω ±1% resistor (1210 1kΩ ±5% resistor (1206) R4, R10, R11, R12, R17, R20, 0 Not installed resistors (0805) ...

Page 3

MAX5954L Evaluation Kit/Evaluation System Component Suppliers SUPPLIER PHONE Diodes 805-446-4800 www.diodes.com Incorporated IRC 361-992-7900 www.irctt.com Murata 770-436-1300 www.murata.com Panasonic 714-373-7366 www.panasonic.com Sanyo Electronic 619-661-6835 www.sanyodevice.com Device TDK 847-803-6100 www.component.tdk.com Vishay — www.vishay.com Note: Indicate that you are using the MAX5954L ...

Page 4

MAX5954L Evaluation Kit/Evaluation System MAX5954L Software and Hardware Configuration 1) Verify that a shunt is not installed on jumper JU1 (PRES-DET) and a shunt is installed on jumper JU2 (MRL). 2) Verify that shunts are installed on pins 2 and ...

Page 5

MAX5954L Evaluation Kit/Evaluation System The MAX5954L EV kit features green LEDs connected to the 12V, 3.3V, and 3.3V-auxiliary outputs that indi- cate if the respective output is currently powered. Red test points for the 12V and 3.3V outputs, various PCI ...

Page 6

MAX5954L Evaluation Kit/Evaluation System Control Methods, Other Configurations, and I/O Expander The MAX5954L EV kit features two slide switches to reset a latched fault at the channel. The respective switch resets the MAX5954L and unlatches faults when toggled from on ...

Page 7

MAX5954L Evaluation Kit/Evaluation System Figure 1. MAX5954L Evaluation Software Main Window for Reading Current EV Kit Status and Sending Commands Table 4. MAX7313 I/O Port Configuration/Function MAX7313 PORT P7 PORT P6 PORT I/O (BIT D7) (BIT D6) Port Config OUTPUT ...

Page 8

MAX5954L Evaluation Kit/Evaluation System Figure 2. 2-Wire Interface Window (Provides Direct, Low-Level Access to the MAX5954L with the MAX7313 and SMBus 2-Wire Interface) gram status and SMBus communication status with respect to U2. The MAX5954L EV kit software configures the ...

Page 9

MAX5954L Evaluation Kit/Evaluation System • Has Windows plug-and-play detected the board? Bring up Control Panel->System->Device Manager, and look at what device nodes are indicated for USB. If there is an “unknown device” node attached to the USB, delete it—this forces ...

Page 10

MAX5954L Evaluation Kit/Evaluation System GND GND C4 10µF R2 750Ω GND C1 12V 1500µF 16V C6 GND 12V 1µF TP13 GND 0.008Ω N1S 1kΩ TP14 12G 12V R4 D2 ...

Page 11

MAX5954L Evaluation Kit/Evaluation System Figure 4. MAX5954L EV Kit Schematic, PCI Express X16 Connectors ______________________________________________________________________________________ 11 ...

Page 12

MAX5954L Evaluation Kit/Evaluation System Figure 5. MAX5954L EV Kit Component Placement Guide—Component Side Figure 6. MAX5954L EV Kit PC Board Layout—Component Side 12 ______________________________________________________________________________________ ...

Page 13

MAX5954L Evaluation Kit/Evaluation System Figure 7. MAX5954L EV Kit PC Board Layout—Inner Layer, Ground Plane Figure 8. MAX5954L EV Kit PC Board Layout—Inner Layer, Power Plane ______________________________________________________________________________________ 13 ...

Page 14

... 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. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc ...

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