REV. 0

a

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties that

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 2002

EVAL-ADM1070EB

ADM1070 Hot Swap Controller Evaluation Kit

Documentation

FEATURES

Full Evaluation Kit for the ADM1070 Hot Swap Controller

Kit Contains Two Boards

Main Evaluation Board for Bench Evaluation

Micro Evaluation Board to Drop into User’s System

Both Boards Feature

On-Board FET to Control Load Current

Programmable Operating Voltage Range (R1/R2 Ratio)

Choice of Default or Custom Timing Values

Main Evaluation Board Features

Edge Connectors Allow for Simulation of Real

Hot Swap Events with ADM1070 Residing on Plug-In

Module or Backplane

External Signals Can Be Switched in through SMB

Microboard Features

Drops onto a User’s System, Replacing the Current

Hot Swap Device

EVALUATION KIT CONTENTS

• ADM1070 Evaluation Board

• ADM1070 Microboard

• ADM1070 Data Sheet

• Evaluation Kit Documentation (This Document)

• Application Note

• Five ADM1070 Samples

FUNCTIONAL BLOCK DIAGRAM

J9

J8

J1

J2

J3

R1

R2

–48V IN

–48V IN

–48V IN

J4

UV/OV

TIMER

SENSE

GATE

ADM1070

0V IN

EDGE

CONNECTOR

16k

ORDERING INFORMATION

Full ADM1070 Evaluation Kit: The EVAL-ADM1070EB

contains the Main Evaluation Board and Micro Evaluation Board.

ADM1070 Micro Evaluation Kit: The EVAL-ADM1070MEB

contains the Micro Evaluation Board only.

GENERAL DESCRIPTION

This Evaluation Kit allows the ADM1070 negative voltage Hot

Swap Controller to be easily evaluated. The ADM1070 provides

undervoltage and overvoltage protection by monitoring the

supply voltage and provides robust current limiting by monitor-

ing the load current. The device uses a FET in the power path

to control the load current. The complete data sheet for the

ADM1070 is available from Analog Devices and should be

consulted in conjunction with this document.

SETTING UP THE ADM1070 MAIN EVALUATION BOARD

The user can set up the ADM1070 Evaluation Board with various

configurations of supply voltage operating range, maximum

allowable load current, and timing values as follows:

1. Choose values of resistors R1 and R2 to suit the desired oper-

ating voltage range. The default resistors’ values (R1 = 39 k

Ω,

R2 = 1 k

Ω) give an operating range of 36.4 V to 76.8 V. See

Table IV on page 11 of the ADM1070 data sheet for other

resistor ratios and their operating ranges.

2. Choose a maximum load current permitted before the

ADM1070 will register a current fault. This is decided by the

data sheet.