LTC3883EUH [Linear]

3-Phase Step-Down DC/DC Controller with Power System Management;


型号：	LTC3883EUH
厂家：	Linear
描述：	3-Phase Step-Down DC/DC Controller with Power System Management
文件：	总14页 (文件大小：3858K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

DEMO MANUAL DC2052A

LTC3880EUJ/LTC3883EUH

3-Phase Step-Down DC/DC

Controller with Power System

Management

DESCRIPTION

Demonstration circuit 2052A is a 3-phase single output

synchronousbuckconverterfeaturingtheLTC3880EUJ, a

dual-phasecurrentmodecontroller,andtheLTC3883EUH,

a single-phase current mode controller with input current

sensing capability. Both the LTC^®3880 and LTC3883 have

a PMBus interface and the power system management

functions.

bus communication. This allows easy evaluation of the

DC/DC converter. To fully explore the extensive digital

power management features of these parts, download the

GUI software LTpowerPlay™ onto your PC and use LTC’s

I C/SMBus/PMBus Dongle DC1613A to connect to the

board. LTpowerPlayallowstheusertoreconfigurethepart

on the fly and store the configuration in EEPROM, view

telemetryofvoltage,current,temperatureandfaultstatus.

The layout of DC2052A is very compact with the total

solution within a 1.1 inch by 1.2 inch area for LTC3880,

and 1.1 inch by 0.35inch for LTC3883. The input volt-

age range of this board is from 6.5V to 14V. The output

voltage can be programmed from 0.5V to 1.8V, with an

output current of up to 60A total. The factory default set-

ting for the output voltage is 1.0V. The DC2052A also has

an onboard pulse generator circuit and the dynamic load

circuit which make it easy for the customer to evaluate

the transient performances.

GUI Download

The software can be downloaded from:

http://www.linear.com/ltpowerplay

For more details and instructions of LTpowerPlay, please

refer to “LTpowerPlay for LTC3880 Quick Start Guide.”

Design files for this circuit board are available at

http://www.linear.com/demo

The DC2052A powers up to default settings and produces

powerbasedonconfigurationresistorsorthenon-volatile

memory settings (NVM) without the need for any serial

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

LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

PERFORMANCE SUMMARY ^{Specifications are at T}_A^{= 25°C}

SYMBOL

PARAMETER

CONDITIONS

MIN

6.5

0.5

TYP

MAX

UNITS

Input Supply Range

Output Voltage Range

Output Current Range

Factory Default Switching

Peak Efficiency

= 0A to 60A, V = 6.5V to 14V

1.0

1.8

OUT

350

kHz

EFF

= 1.0V, See Figure 4

87.5

OUT

dc2052af

DEMO MANUAL DC2052A

QUICK START PROCEDURE

3. Make sure the RUN switch (SW) is OFF.

4. Turn on the power at the input.

Demonstration circuit 2052A makes it easy to set up and

evaluatetheperformanceoftheLTC3880andtheLTC3883.

RefertoFigure2forpropermeasurementequipmentsetup

and follow the procedure below:

Note:Makesurethattheinputvoltagedoesnotexceed16V.

5. Turn on the RUN switch as desired.

Note: When measuring the input or output voltage ripple,

care must be taken to avoid a long ground lead on the

oscilloscope probe. Measure the output voltage ripple by

touchingtheprobetipdirectlyacrosstheC16.SeeFigure3

for proper scope probe technique.

6. Check for the correct output voltage from E3 to E4.

= 1.0V 0.5% (1.005V ꢀ 0.ꢁꢁ5V)

OUT

Note:Ifthereisnooutput, temporarilydisconnecttheload

to make sure that the load is not set too high.

1. Make sure jumpers are in the following positions:

7. Once the proper output voltage is established, adjust

the loads within the operating range and observe the

output voltage regulation, ripple voltage, efficiency and

other parameters.

JUMPER POSITION FUNCTION

JP1

OFF

EXTVCC_DRV – External V for

LTC3880/LTC3883-1

JP2

JP3

OFF

LED Indicator

8. Connectthedongleandcontroltheoutputvoltagesfrom

the GUI. See “LTpowerPlay QUICK START” session for

details.

Pulse Generator

2. With power off, connect the input power supply to VIN

and GND. Connect active load to the output.

Figure 1. Demo Setup with PC

dc2052af

DEMO MANUAL DC2052A

QUICK START PROCEDURE

Figure 2. Power Test Setup

–

OUT

GND

OUT

Figure 3. Measuring Output Voltage Ripple

dc2052af

DEMO MANUAL DC2052A

QUICK START PROCEDURE

Connecting a PC to DC2052A

Evaluating the DC2052A When V is Below 6.0V

You can use a PC to reconfigure the power management

features of the LTC3880 and the LTC3883 such as: nomi-

For applications that the input voltage is within 4.5V to

6.0V, please install R5 to connect VIN directly to INTVCC.

Please be aware that in this case VIN cannot exceed 6.0V

otherwise the chip will be damaged.

nal V , margin set points, OV/UV limits, temperature

OUT

fault limits, sequencing parameters, the fault log, fault

responses, GPIO and other functionality. The DC1613A

dongle may be plugged in regardless of whether or not

VIN is present. Dongle can be hot plugged.

Evaluating the LTC3880-1 and LTC3883-1

Forapplicationsthatrequirethehighestpossibleefficiency,

the LTC3880-1 and LTC3883-1 allow the user to supply

the bias voltage and gate driver current from an external

power supply. Connect the external power supply, 4.8V

to 5.2V, to the EXTVCC pin.

Combining DC2052A with Other Digital Power Demo

Boards

The DC2052A may be plugged together in a multiboard

array with other LTC power system management boards

using J6 and J8.

To use the onboard LDO to drive INTVCC, make the fol-

lowing modifications to the demo board:

Measuring Efficiency (See Figure 4)

• Set JP1 to ON so that U4 provides the 5V drive to

INTVCC.U4takestheplaceoftheexternalpowersupply.

To accurately measure efficiency of any configuration, do

the following:

• Install R53, R54.

• Set JP1, JP2, JP3 to OFF position to disable all the

auxiliary circuits.

Toaccuratelymeasureefficiencyofademoboardcontain-

ing the LTC3880-1 and the LTC3883-1,

• Make sure R53, R54 are not stuffed.

• Drive INTVCC from an external source through the pin

named: EXTVCC.

• Measure V across the input ceramic capacitor (C28).

Measure V

across the output ceramic capacitor

• Set JP1 to OFF to disable the LDO.

OUT

(C32).

• Measure V across the input ceramic capacitor (C28).

Measure V

across the output ceramic capacitor

OUT

(C32).

Measuring Output Ripple Voltage

An accurate ripple measurement may be performed by

using the below configuration across C16.

Figure 4. Typical Efficiency Curves DC2052A, 12V_IN,

_SW= 350kHz, V_OUT= 1.0V,1.2V,1.5V

dc2052af

DEMO MANUAL DC2052A

LTpowerPlay SOFTWARE GUI

LTpowerPlay is a powerful Windows-based development

environment that supports Linear Technology power sys-

tem management ICs, including the LTC3880, LTC3883,

LTC2ꢁ74 and LTC2ꢁ78. The software supports a variety

of different tasks. You can use LTpowerPlay to evaluate

Linear Technology ICs by connecting 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 reloaded at a later

time. LTpowerPlay provides 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

DC1613A USB-to-SMBus controller to communicate with

one of many potential targets, including the LTC3880 and

the LTC3883’s DC2052A demo system, 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://linear.com/ltpowerplay

To access technical support documents for LTC Digital

Power Products visit Help. View online help on the

LTpowerPlay menu.

Figure 5. LTpowerPlay Main Interface

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DEMO MANUAL DC2052A

LTpowerPlay QUICK START PROCEDURE

c. In the Toolbar, click the “R” (RAM to PC) icon to read

ThefollowingproceduredescribeshowtouseLTpowerPlay

to monitor and change the settings of LTC3880 and

LTC3883.

the RAM from the LTC3880 and the LTC3883. This

reads the configuration from the RAM of LTC3883

and loads it into the GUI.

1. Download and install the LTPowerPlay GUI:

http://linear.com/ltpowerplay

2. Launch the LTpowerPlay GUI.

a. The GUI should automatically identify the DC2052A.

The system tree on the left hand side should look

like this:

d. If you want to change the output voltage to a differ-

ent value, like 1.5V. In the Config tab, type in 1.5 in

the VOUT_COMMAND box, like this:

b. A green message box shows for a few seconds in the

lower left hand corner, confirming that the LTC3880

and the LTC3883 are communicating:

dc2052af

DEMO MANUAL DC2052A

LTpowerPlay QUICK START PROCEDURE

Then, click the “W” (PC to RAM) icon to write these

registervaluestotheLTC3880andtheLTC3883.After

finishing this step, you will see the output voltage

will change to 1.5V.

e. You can save the changes into the NVM. In the tool

bar, click “RAM to NVM” button, as following

f. Save the demo board configuration to a (*.proj)

file. Click the Save icon and save the file. Name it

whatever you want.

If the write is successful, you will see the following

message:

dc2052af

DEMO MANUAL DC2052A

PARTS LIST

ITEM

QTY REFERENCE

PART DESCRIPTION

MANUFACTURE/PART NUMBER

Required Circuit Components

C1, C2, C27, C28, C44, C45

CAP., X5R, 22μF, 25V, 10%, 1210

CAP., X7R, 4.7μF,16V, 10%, 0603

CAP., OS-CON, 330μF, 16V, 20%

CAP., X7R, 100nF, 25V, 10%, 0603

CAP., X7R, 100nF, 25V, 10%, 0402

CAP., X5R, 1μF, 10V, 20%, 0402

CAP., X5R, 1μF, 10V, 20%, 0603

CAP., X5R, 100μF, 6.3V, 20%,1210

MURATA GRM32ER61E226KE15L

TDK C1608X5R1C475K

SANYO, 16SVP330M

C3, C40

C4, C5

AVX 06033C104KAT2A

C21, C2ꢁ, C47

AVX 04023D104KAT2A

C7, C8, C14, C36, C41, C53

C38, C3ꢁ

AVX 0402ZD105KAT2A

TAIYO YUDEN EMK107BJ105KA

AVX 12106D107MAT2A

Cꢁ, C10, C11, C12, C13, C30, C31, C32, C33,

C34, C35, C48, C4ꢁ, C50, C51, C52, C71, C72

ꢁ

C16, C17, C18, C1ꢁ, C20, C74

C22, C37, C54

C23

CAP., POSCAP, 470μF, 2.5V

SANYO, 2R5TPE470Mꢁ

1ꢁ

2ꢁ

CAP., POSCAP, 470μF, 2.5V

AVX 0402YD104KAT2A

CAP., X7R, 1000pF, 25V, 10%, 0603

CAP., X5R, 10nF, 25V, 10%, 0402

CAP., X5R, 100pF, 25V, 10%, 0603

CAP., NPO, 47pF,25V, 10%, 0603

CAP., X5R, 0.1μF, 10V, 20%, 0603

CAP., X7R, 0.01μF,16V, 10%, 0402

DIODE, SCHOTTKY, SOD-323

INDUCTOR, SMT POWER IND. 0.3μH

DUAL N-CHANNEL MOSFET 25V

TRANS GP SS PNP 40V SOT-416

RES., CHIP, 2Ω, 1%, 0603

AVX 06033A102KAT2A

C24, C26, C55

C56

AVX 04023C103KAT2A

AVX 06033A101JAT2A

C25

AVX 06033A470JAT2A

C42

AVX 0603ZC104MAT2A

C43, C46

AVX 0402YC103KAT2A

D1, D2, D3

L1, L2, L3

CENTRAL CMDSH-3TR

COILCRAFT., XAL7070-301ME

FAIRCHILD FDMS3620S

Q1, Q4, Q5

Q2, Q3, Q6

R1, R81

ON SEMI MMBT3ꢁ06TT1

YAGEO RC0603FR-072RL

NIC NRC06F1002TRF

R2, R4, R6

R3, R17, R24

R7, R8, R18, R1ꢁ, R44, R45

RES., CHIP, 10k, 1%, 0603

RES., CHIP, 10k, 1%, 0402

VISHAY CRCW040210K0FKED

VISHAY CRCW04022K61FKED

VISHAY CRCW06030000Z0ED

VISHAY CRCW04020000Z0ED

YAGEO RC0603FR-074K53L

VISHAY CRCW0402100RFKED

VISHAY CRCW04024KꢁꢁFKEA

LINEAR TECH., LTC3880EUJ#0125-1PBF

LINEAR TECH., LTC3883EUH#0126-1PBF

RES., CHIP, 2.61k, 1%, 0402

R11, R12, R35, R3ꢁ, R43, R4ꢁ, R51, R52, R56 RES., CHIP, 0Ω, 1%, 0603

R10, R14, R15, R22, R38, Rꢁ4

RES., CHIP, 0Ω, 1%, 0402

R13

RES., CHIP, 4.53k, 1%, 0603

RES., CHIP, 100Ω, 1%, 0402

RES., CHIP, 4.ꢁꢁk, 1%, 0402

IC, LTC3880EUJ, QFN 6mm x 6mm

IC, LTC3883EUH, QFN 5mm x 5mm

R25, R26

R40, R46

Additional Circuit Components

C60, C64

CAP., X7R, 4.7μF,16V, 10%, 0603

CAP., X7R, 100nF, 25V, 10%, 0603

CAP., X5R, 1μF, 10V, 20%, 0805

CAP., X5R, 1μF, 10V, 20%, 1206

CAP., OPTIONAL

TDK C1608X5R1C475K

AVX 06033C104KAT2A

AVX 0805ZD105KAT2A

AVX 1206YD105KAT2A

C5ꢁ

C70

C61, C62, C65, C67, C68

C15, C57, C73 (OPT)

dc2052af

DEMO MANUAL DC2052A

PARTS LIST

ITEM

QTY REFERENCE

PART DESCRIPTION

MANUFACTURE/PART NUMBER

AVX 0805YD224KAT2A

C66

CAP., X5R, 2.2μF, 16V, 10%, 0805

CAP., X5R, 10nF, 25V, 10%, 0603

CAP., X5R, 10uF,25V, 20%,1206

CAP., X5R, 150pF, 25V, 20%, 0603

LED GREEN S-GW TYPE SMD

C58

AVX 06033A103JAT2A

C63

Taiyo Yuden TMK316BJ106ML

AVX 06033C151KAT2A

ꢁ

C6ꢁ

PANASONIC LN1371SGTRP

PANASONIC LN1271RTR

VISHAY, TP0101K-T1-E3

FAIRCHILD, 2N7002K-7-F

RENESAS, RJK0305DPB-00#J0

Yageo RC0603FR-072RL

NIC NRC06F1002TRF

LED RED S-TYPE GULL WING SMD

MOSFET P-CH 20V 0.58A SOT-23

MOSFET N-CH 60V 115MA SOT-23

MOSFET SPEED SRS 30V 30A LFPAK

RES., CHIP, 2Ω, 1%, 0603

Q7, Q8, Qꢁ

Q10

Q11

R27

R63, R64, R70, R88

RES., CHIP, 10k, 1%, 0603

RESISTOR 0.005Ω 1W 1% 0815

SUSMU RL3270WT-R005-F

Rꢁ, R16, R23, R28, R2ꢁ, R30, R31, R32, R33, RES., OPTIONAL

R34, R36, R37, R41, R42, R47, R48, R53,

R54, R5ꢁ, R61, R66, R73, R75, Rꢁ5

1ꢁ

2ꢁ

3ꢁ

R20, R50

R21

RES., CHIP, 16.2k, 1%, 0402

VISHAY CRCW040216K2FKED

VISHAY CRCW040217K4FKEA

VISHAY CRCW040220K5FKED

VISHAY CRCW06030000Z0ED

VISHAY CRCW06034KꢁꢁFKEA

ROHM, MCR03EZPFX1582

NIC NRC06F10R0TRF

RES., CHIP, 17.4k, 1%, 0402

RES., CHIP, 20.5k, 1%, 0402

R55

R11, R12, R35, R3ꢁ, R43, R4ꢁ, R51, R52, R56 RES., CHIP, 0Ω, 1%, 0603

R60, R62, R65, R67

RES., CHIP, 0Ω, 1%, 0603

RES., CHIP, 4.ꢁꢁk, 1%, 0603

RES., CHIP, 15.8k, 1%, 0603

RES., CHIP, 10Ω, 1%, 0603

RES., CHIP, 200Ω, 1%, 0603

RES., CHIP, 127Ω, 1%, 0603

RES., CHIP, 100k, 1%, 0603

RES., CHIP, 1M, 1%, 0603

RES., CHIP, 154k, 1%, 0603

RES., CHIP, 20k, 1%, 0603

RES., CHIP, 3.3Ω, 1%, 0603

RES., CHIP, 681k, 1%, 0603

RES., CHIP, 82.5Ω, 1%, 0603

RES., CHIP, 0.01Ω, 1%, 2010

TRIMMING POTENTIOMETER, 5k

IC, 24LC025-I/ST, SOIC

R76, R77

R68, R6ꢁ

R71, Rꢁ0

R72

NIC NRC06F2000TRF

R74

VISHAY CRCW0603127RFKEA

NIC NRC06F1003TRF

R78, R7ꢁ, R80

R82

NIC NRC06f1004TRF

R83

VISHAY CRCW0603154KFKEA

NIC NRC06F2002TRF

R84, R86

R85

VISHAY CRCW06033R30JNEA

VISHAY CRCW0603681KFKEA

VISHAY CRCW060382R5FKEA

VISHAY, WSL2010R0100FEA

BOURNS, 3386P-1-502LF

MICROCHIP, 24LC025-I/ST

LINEAR TECH, LT112ꢁCS8-5

LINEAR TECH. LT112ꢁCS8-3.3

LINEAR TECH. LTC6ꢁꢁ2CS6-1

LINEAR TECH. LT1803IS5

R87

R8ꢁ

Rꢁ1

Rꢁ2

U4, U6

IC, LT112ꢁCS8-5, S8 PACKAGE

IC, LT112ꢁCS8-3.3 S8 PACKAGE

IC., LTC6ꢁꢁ2-1, S6-TSOT

IC., LT1803IS5, S5-TSOT

dc2052af

DEMO MANUAL DC2052A

PARTS LIST

ITEM

QTY REFERENCE

PART DESCRIPTION

MANUFACTURE/PART NUMBER

Hardware

E1-E5, E7, E8, E10, E12-E14, E18-E24

TESTPOINT, TURRET, 0.062"

STUD, TEST PIN

MILL-MAX, 2308-2-00-80-00-00-07-0

PEM KFH-032-10

J1-J4

J1-J4 (x2)

J1-J4

NUT, BRASS 10-32

ANY #10-32

RING, LUG #10

KEYSTONE, 8205, #10

ANY #10

J1-J4

WASHER, TIN PLATED BRASS

SW1

CONNECTOR, SUB MINIATURE SLIDE

SWITCHES

C&K., JS202011CQN

JP1-JP4

HEADER 3 PIN 0.07ꢁ SINGLE ROW

SHUNT

SAMTEC, TMM103-02-L-S

SAMTEC, 2SN-BK-G

ꢁ

PIN HEADER 20 DUAL ROW RA (M)

MILL MAX 802-40-020-20-0001

FCI ꢁ8414-G06-12ULF

CONN HEADER 12POS 2MM STR DL

PCB

CONN SOCKET 20 DUAL ROW RA (F)

CONN, BNC, 5 PINS

MILL MAX 803-ꢁ3-020-20-001

CONNEX, 112404

Jꢁ, J10

MTH1-MTH4

STAND-OFF, NYLON 0.50" tall

STENCIL (TOP & BOTTOM)

KEYSTONE, 8833(SNAP ON)

STENCIL DC2052AT

dc2052af

DEMO MANUAL DC2052A

SCHEMATIC DIAGRAM

dc2052af

DEMO MANUAL DC2052A

SCHEMATIC DIAGRAM

dc2052af

DEMO MANUAL DC2052A

SCHEMATIC DIAGRAM

dc2052af

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.

DEMO MANUAL DC2052A

DEMONSTRATION BOARD IMPORTANT NOTICE

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

Thisdemonstrationboard(DEMOBOARD)kitbeingsoldorprovidedbyLinearTechnologyisintendedforuseforENGINEERINGDEVELOPMENT

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 applica-

tion engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA ꢁ5035

dc2052af

LT 0413 • PRINTED IN USA

LinearTechnology Corporation

1630 McCarthy Blvd., Milpitas, CA ꢁ5035-7417

●

(408) 432-1ꢁ00 FAX: (408) 434-0507 www.linear.com

LTC3883EUH [Linear]

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