MAX5946LEVKIT【PDF 1/13 页】EVAL KIT FOR MAX5946

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19-3621; Rev 0; 1/05

MAX5946L Evaluation Kit/Evaluation System

General Description

The MAX5946L evaluation kit (EV kit) is a fully assembled

and tested surface-mount, dual hot-plug controller circuit

board for two PCI Express? hot-plug slots. The circuit

uses a MAX5946L 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 at two PCI Express-16

connectors. The EV kit demonstrates the MAX5946L IC’s

inrush current control, output overcurrent/short-circuit

protection, and input undervoltage monitoring features.

The MAX5946L IC controls two separate external n-chan-

nel MOSFETs for the 12V and 3.3V outputs of each chan-

nel, respectively. Additionally, the MAX5946L has two

internal MOSFETs that control the 3.3V auxiliary outputs

of channels A and B. Switches on the EV kit are provided

to independently enable/disable each channels ’

12V/3.3V and 3.3V auxiliary supply.

The MAX5946L EV kit can be reconfigured to evaluate an

x1, x4, or x8 PCI Express dual hot-plug design.

Alternatively, the EV kit can also be used to demonstrate

the MAX5946L hot-plug features without using the PCI

Express-16 connectors.

The EV kit includes a MAX7313 I/O expander that

enables communication through an SMBus? interface

for the MAX5946L signals and some of the PCI Express

channel A and B signals. An SMBus interface board

(CMODUSB) can be used to enable PC communication

through the SMBus interface. Simple Windows

98/2000/XP ? -compatible software is provided to access

the MAX7313 I/O expander registers at the bit level. The

MAX5946L EV kit can be used in local control without

any software.

Order the MAX5946LEVCMODU for a complete PC-

based evaluation of the MAX5946L. Order the

MAX5946LEVKIT if you already have a CMODUSB

SMBus interface board or do not require PC-based eval-

uation of the MAX5946L.

Features

? Demonstrates PCI Express-16 Dual Hot-Plug

Design

? Independent Output Controls for Each Channel

? 12V at Up to 5.5A (Adjustable)

? 3.3V at Up to 3A (Adjustable)

? 3.3VAux at Up to 0.375A

? Evaluates Hot-Plugging PCI Express x1, x4, x8, or

x16 Cards

? Demonstrates Input Inrush-Current Control

? Demonstrates Output Overcurrent/Short-Circuit

Protection

? Monitors Input Undervoltage for 12V, 3.3V, and

3.3VAux with Status Reports

? Configurable Power-On Reset (POR)

? Independent On/Off Controls for Channels A/B

(12V/3.3V and 3.3VAux)

? Independent +3.3VAux Output with Separate

On/Off Control

? Latched Output after Fault Conditions (12V, 3.3V,

3.3VAux)

? Input/Output Interface Using a MAX7313 I/O

Expander (SMBus Interface) or Local Control

? 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.

PART

Ordering Information

SMBus

TEMP IC

INTERFACE

RANGE PACKAGE

TYPE

MAX5946LEVCMODU

(MAX5946L EV System)

Component List

MAX5946LEVKIT

0°C to +70°C

36-Thin

QFN-EP*

Not Included

PART

QTY

DESCRIPTION

MAX5946LEVCMODU 0°C to +70°C

36-Thin

QFN-EP*

CMODUSB

MAX5946LEVKIT

CMODUSB

MAX5946L evaluation kit

SBMus interface board

* EP = Exposed paddle.

Note: The MAX5946L EV kit software is provided with the

MAX5946LEVKIT. However, the CMODUSB interface board is

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

software.

________________________________________________________________ Maxim Integrated Products

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.

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