Analog Devices Linear Technology DC2691A Manuale utente

dc2691af

DEMO MANUAL DC2691A

DESCRIPTION

LTC2972

Programming Board for 2-Channel PMBus

Power System Manager

The DC2691A programming board contains the cir-

cuitry needed to program and verify the EEPROM of the

LT C

2972. It is shipped with a clamshell style program-

ming socket installed. The LTpowerPlay

*.proj file that

corresponds to the factory default configuration can be

found in the GUI.

To properly program and verify the contents of the

EEPROM, download and install the LTpowerPlay software

(GUI).

http://www.linear.com/ltpowerplay/

You also need a Linear Technology DC1613 USB to I2C/

SMBus/PMBus Controller.

Demo System Required Hardware

n Windows PC

n USB-to-I2C/SMBus/PMBus Controller (DC1613)

n DC2691A

Demo System Required Software

n LTpowerPlay

L, LT, LTC, LTM, Linear Technology, the Linear logo and LTpowerPlay are registered

trademarks of Analog Devices, Inc. All other trademarks are the property of their respective

owners.

Power System Manager Features

n Sequence, Trim, Margin, Supervise Power Supplies

n Manage Faults, Monitor Telemetry, Create Fault Logs

n PMBus Compliant Command Set

n Supported by LTpowerPlay GUI

n Margin or Trim Supplies to ±0.25% Accuracy

n Monitor Input Current (±1%) and Accumulate Energy

n Fast OV/UV Supervisors per Channel

n Supports Multi-Channel Fault Management

n Automatic Fault Logging to Internal EEPROM

n Operates Autonomously without Additional Software

n OV/UV VOUT and One VIN Supervisor

n Monitor VIN, VOUT, IIN, IOUT and Temperature

n Time-Based Output Sequencer

n I2C/SMBus Serial Interface

n Can Be Powered from 3.3V, or 4.5V to 15V

n Connect Directly to Regulator IMON Pins

n Available in a 44-Pin 6mm × 7mm QFN Package

Design files for this circuit board are available at

http://www.linear.com/demo/DC2691A

Figure 1. LTC2972 Programming Setup Using DC2691A

dc2691af

DEMO MANUAL DC2691A

DC2691A DETAILS

What You Can Do with the DC2691A

1. Compare the contents of the LTC2972’s EEPROM

against any LTpowerPlay Project File. (Verify)

2. Program the contents of the LTC2972’s EEPROM using

any LTpowerPlay Project File. (Program and Verify)

Figure 2. DC2691A Top Side Details

dc2691af

DEMO MANUAL DC2691A

LTPOWERPLAY GUI SOFTWARE

LTpowerPlay is a powerful Windows-based development

environment that supports Linear Technology Power

System Management ICs with EEPROM. The software

supports a variety of different tasks. You can use LTpow-

erPlay to evaluate Linear Technology ICs by connect-

ing to a demo board system. LTpowerPlay can also be

used in an offline mode (with no hardware present) in

order to build a multichip configuration file that can be

saved and re-loaded at a later time. LTpowerPlay pro-

vides unprecedented diagnostic and debug features. It

becomes a valuable diagnostic tool during board bring-up

to program or tweak the power management scheme in

a system or to diagnose power issues when bringing up

rails. LTpowerPlay utilizes the DC1613 I

C/SMBus/PMBus

Controller to communicate with one of many potential

targets, including the DC2691A programming board or a

customer board. The software also provides an automatic

update feature to keep the software current with the latest

set of device drivers and documentation. The LTpowerPlay

software can be downloaded from:

http://www.linear.com/ltpowerplay

To access technical support documents for LTC Power

System Management products visit “Help, View Online

Help” on the LTpowerPlay menu.

Figure 3. Screenshot of the LTpowerPlay GUI

dc2691af

DEMO MANUAL DC2691A

QUICK START PROCEDURE

The DC2691A programming board makes it easy to pro-

gram and verify the EEPROM contents of the device.

1. Place jumpers and switches in the following default

positions.

WP:OFF

ASEL1: L

ASEL0: L

S1: OFF

NOTE:By default, ASEL0 and ASEL1 jumpers are both

set to low (L). If you wish to program a device with

an address other than 0x5C, adjust ASEL0 and ASEL1

jumpers appropriately. Consult device data sheet for

details.

2. Connect USB controller to your PC. Plug the ribbon

cable into connector J1 of the DC2691A programming

board.

3. Open the socket lid. Place the IC inside with pin 1

located in the upper left corner. See Figure 4.

Figure 4. Open Clamshell Lid

dc2691af

DEMO MANUAL DC2691A

4. Close lid. It will snap into place. See Figure 5.

NOTE:Removal and insertion of the IC should be done

with either tweezers or a vacuum suction device, and

with the power switch S1 set to OFF.

Figure 5. DC1613 Ribbon Cable Attached and Lid Closed

5. Set the power switch S1 to the ON position. The VDD33

LED will illuminate, indicating the on-chip regulator is

providing internal power.

6. Launch the LTpowerPlay software from your PC. The

LT Device Programmer window will appear. Click “…”

next to the selection box and select your .proj file to

program the device.

Figure 6. LT Device Programmer

QUICK START PROCEDURE

dc2691af

DEMO MANUAL DC2691A

QUICK START PROCEDURE

7. Click the Program and Verify button, and wait for the

process to complete.

a. LTpowerPlay is ready to program/verify the device.

Figure 7. Ready To Program

b. After the process is complete, you will see “Success-

fully Programmed and Verified Device”in the status

bar at the bottom.

Figure 8. Successfully Programmed

8. Prior to removing the device from the socket, set the

power switch, S1, to the off position to remove power

from the device. The USB ribbon cable may remain

connected to programing board.

9. To program another device, repeat Steps 3 through 5,

then Steps 7 and 8. LTpowerPlay’s Programming Utility

does not need to be closed.

dc2691af

DEMO MANUAL DC2691A

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-

tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.

SCHEMATIC DIAGRAM

GND

0.1 UF1.0 UF

0.1 UF

.01 UF

0.1 UF0.1 UF

5.49K

10K

+5V

GND

10K

GND

1.0 OHM

GND

GND GND

GND

CONN_DC1613

24AA64

GND

ASEL0

GND

ASEL1

GND

+5V

LED-0603

GND

0.1 UF

10K 10K

2.0K

10.0K

LTC2972

DNI

C5C6

ASEL0

ASEL1

LED1

R1 R2

R10

R11

R12

R13

GND

+5VVDD33_2972 VDD33_2972

+5V_DONGLE

SDA

SCL

VSENSEP0

ISENSEP0

ISENSEM0

VDAC0

VSENSEP1

ISENSEP1

ISENSEM1

VDAC1

VPWR

VIN_SNS

SHARE_CLK

CONTROL0

SCL

SDA

FAULTB0

ALERTB

VOUT_EN0

VOUT_EN1

REFP

REFM

VDD33

VDD25

TSENSE1

TSENSE0

PAD

GND

FAULTB1

CONTROL1

WDI/RESET

ASEL0

VDD33

VDD25

VSENSEM0

VSENSEM1

ASEL1

PWRGD

AUXFAULT

CH0

CH1

IIN_SNSP

IIN_SNSM

VIN_SNS_CAP

DNC

VDDIO

PG0

PG1

CUSTOMER NOTICE

SCALE = NONE

LTC CONFIDENTIAL

FOR CUSTOMER

USE ONLY

PCB DES.

APP ENG. www.linear.com

+5V (100mA)

SDA

GND

SCL

+3.3V(100mA)

ALRTB

GPO_1

OUTEN

GPO_2

GND

AUXSCL

AUXSDA

SCL

GND

SDA VCC

PROGRAMMING BOARD FOR LTC2972

RENE S.RENE S.

MIKE P.

LTC2972 A

dc2691af

DEMO MANUAL DC2691A

LT 0917 • PRINTED IN USA

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:

This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT

OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete

in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety

measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union

directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.

If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date

of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU

OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS

FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR

ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims

arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all

appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or

agency certified (FCC, UL, CE, etc.).

No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,

customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.

LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.

Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and

observe good laboratory practice standards. Common sense is encouraged.

This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application

engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

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