Linear Technology DC2453A Kurzanleitung zur Einrichtung

dc2453afb

DEMO MANUAL DC2453A

Description

LTM4643EV

Quad DC/DC µModule Regulator

with Configurable 3A Output Array

Demonstration circuit 2453A features the LT M

4643

µModule

regulator, a high performance high efficiency

4 output step-down regulator. The LTM4643EV has an

operating input voltage range of 4V to 20V and is able

to provide up to 3A out output current from each of its

phases. Each output’s voltage is programmable from 0.6V

to 3.3V. The LTM4643EV is a complete DC/DC point of load

regulator in a thermally enhanced 15mm ×9mm×1.82mm

LGA package requiring only a few input and output ca-

pacitors. Output voltage tracking is available through the L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of

Linear Technology Corporation. All other trademarks are the property of their respective owners.

BoarD photo

TRACK/SS pin for supply rail sequencing. External clock

synchronization is also available through the CLKIN pin.

The CLKOUT pin provides for synchronization of additional

modules’ phases. The LTM4643 data sheet must be read

in conjunction with this demo manual for working on or

modifying demo circuit 2453A.

Design files for this circuit board are available at

http://www.linear.com/demo/DC2453A

Figure 1. Quad 3A LTM4643; DC2453A

dc2453afb

DEMO MANUAL DC2453A

Quick start proceDure

Demonstration circuit 2453A is an easy way to evaluate the

performance of the LTM4643EV. Please refer to Figure 1

for test setup connections and follow the procedure below.

1. With power off, place the jumpers in the following

positions:

JP1 JP2 JP3 JP2

RUN1 RUN2 RUN3 RUN4

ON ON ON ON

JP8 JP7 JP6 JP5

MODE1 MODE2 MODE3 MODE4

CCM CCM CCM CCM

2. Before connecting input supply, loads and meters, preset

the input voltage supply to be between 4V to 20V. Preset

the load currents to 0A.

3. With power off, connect the loads, input voltage supply

and meters as shown in Figure 1.

4. Turn on input power supply. The output voltage meters

for each phase should display the programmed output

voltage ±2%.

5. Once the proper output voltage is established, adjust the

load currents for each phase within the 0A to 3A range

and observe the load regulation, efficiency, and other

parameters. Output voltage ripple should be measured

at J6 with a BNC cable and oscilloscope.

6. To observe increased light load efficiency place, a Mode

pin jumper (JP5-JP8) in the DCM Mode position.

performance summary

PARAMETER CONDITIONS/NOTES VALUE

Input Voltage Range 4V – 20V

Output Voltage VOUT Jumper Selectable VOUT1 = 3.3VDC, VOUT2 = 2.5VDC, VOUT3 =

1.5VDC, VOUT4 = 1.2VDC

Maximum Continuous Output Current per Phase Derating is Necessary for Certain Operating

Conditions. See Data Sheet for Details

3ADC

Default Operating Frequency 1.2MHz

Efficiency VIN = 12V, VOUT1 = 3.3V, IOUT = 3A 89% See Figure 2

dc2453afb

DEMO MANUAL DC2453A

Figure 2. Test Setup of DC2453A

Quick start proceDure

dc2453afb

DEMO MANUAL DC2453A

Figure 2. Measured Supply Efficiency at 5VIN and 12VIN

Figure 3. Measured VOUT1 = 3.3V and VOUT4 = 1.2V Load Transient Responses (1.5A to 3A Load Step)

OUTPUT CURRENT (A)

0.5

1.5

2.5

100

EFFICIENCY (%)

dc2453a F02a

3.3VOUT1

2.5VOUT2

1.5VOUT3

1.2VOUT4

OUTPUT CURRENT (A)

0.5

1.5

2.5

100

EFFICIENCY (%)

dc2453a F02b

3.3VOUT1

2.5VOUT2

1.5VOUT3

1.2VOUT4

Quick start proceDure

VIN (V) VOUT (V) COUT CERAMIC

12 3.3 2 × 47μF/6.3V/Ceramic

VIN (V) VOUT (V) COUT CERAMIC

12 1.2 2 × 47μF/6.3V/Ceramic

VOUT1

100mV/DIV

IOUT1_STEP

1A/DIV

VOUT1

100mV/DIV

IOUT1_STEP

1A/DIV

dc2453afb

DEMO MANUAL DC2453A

Figure 4. Measured Thermal Capture with All Phases at Full Load (3A)

VIN (V) AIRFLOW AMBIENT (°C)

5 Natural Convection 28

Quick start proceDure

dc2453afb

DEMO MANUAL DC2453A

parts List

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 2 C1, C3 CAP, CER, 22μF, 25V, X5R, 20%, 1206 MURATA, GRM31CR61E226ME15L

2 1 C6 CAP, X5R, 1μF, 16V 10%, 0603 AVX, 0603YD105KAT2A

3 4 C9, C17 ,C28, C36 CAP, CER, 47μF, 6.3V, X5R, 20%,1210 AVX, 12106D476MAT2A

4 4 C10, C16, C29, C35 CAP, CER, 47μF, 6.3V, X5R, 20%, 1206 TAIYO YUDEN, JMK316ABJ476MLHT

5 4 C25, C26, C45, C46 CAP, CER, 0.10μF, 50V, X7R, 10%, 0603 TDK, C1608X7R1H104K

6 1 R1 RES, 10k, 1%, 1/10W, 0603 VISHAY, CRCW060310K0FKED

7 1 R2 RES, 1Ω, 5%, 1/10W, 0603 VISHAY,CRCW06031R00JNEA

8 1 R3 RES, 13.3k, 1%, 1/10W, 0603 VISHAY CRCW060313K3FKEA

9 1 R4 RES, 40.2k, 1%, 1/10W, 0603 VISHAY CRCW060340K2FKEA

10 1 R11 RES, 19.1k, 1%, 1/10W, 0603 VISHAY CRCW060319K1FKEA

11 1 R12 RES, 60.4k, 1%, 1/10W, 0603 VISHAY CRCW060360K4FKEA

12 1 R28 RES, 0805, 0Ω 5% 1/16W VISHAY, CRCW08050000Z0EA

13 1 U1 LTM4643EV, BGA-15X9-5.01 LINEAR TECH. CORP. LTM4643EV#PBF

Additional Demo Board Circuit Components

1 2 C4, C5 CAP, CER, 22μF, 25V, X5R, 20%, 1206 MURATA, GRM31CR61E226ME15L

2 1 C2 CAP, POSCAP, 33μF, 25V, 7343 PANASONIC, 25TQC33MYF

3 6 C7, C21, C22, C31, C41, C42 CAP, 0603 OPTION

4 4 C8, C18, C27, C37 CAP, POSCAP, 7343 OPTION

5 8 C11, C12, C14, C15, C30, C33, C34, C38 CAP, CER, 1206 OPTION

6 2 C13, C32 CAP, CER, 100pF, 25V, X7R, 10%, 0603 AVX 06033C101KAT2A

7 4 R7, R8, R15, R16 RES, 0Ω, 1%, 1/10W, 0603 VISHAY, CRCW06030000Z0ED

8 4 R19, R20, R21, R22 RES, 150k, 5%, 1/10W, 0603 VISHAY CRCW0603150KJNEA

9 8 R23, R24, R25, R26, R27, R29, R30, R31 RES, 100k, 5%, 1/10W, 0603 VISHAY CRCW0603100KJNEA

10 16 R9, R10, R17, R18, R32-R35, R37-R40,

R42-R45

RES, 0603,OPT OPT

11 3 R36, R41, R46 RES, 0 OHM, 2512,OPT OPT

Hardware

1 16 E1, E3-E17 TESTPOINT, TURRET 0.094" MILL MAX 2501-2-00-80-00-00-07-0

2 2 J1, J2 JACK, BANANA KEYSTONE 575-4

3 8 JP1-JP8 HEADER, 0.079" SINGLE ROW, 3-PIN SULLINS, NRPN031PAEN-RC

4 8 XJP1-XJP8 SHUNT, 0.079" CENTER SAMTEC, 2SN-BK-G

5 4 STAND-OFFS STAND-OFF

, NYLON 0.375" TALL (SNAP ON) KEYSTONE, 8832

dc2453afb

DEMO MANUAL DC2453A

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

4V - 20V

GND

VOUT3

GND

CLKIN

TRACK2

VIN

1.5V / 3A MAX

1.2V / 3A MAX

VOUT4

GND

3.3V / 3A MAX

VOUT1

GND

2.5V / 3A MAX

VOUT2

GND

TEMP

OFF

TRACK1 TRACK3

TRACK4

OPTIONAL JUMPERS FOR

PARALLEL OPERATION

CCM

DCM

7343

RUN1 RUN2 RUN3 RUN4

7343

1210

VIN+

GND

NOTE: UNLESS OTHERWISE SPECIFIED

1. ALL RESISTORS AND CAPACITORS ARE 0603.

MODE4

CCM

DCM

MODE3

CCM

DCM

MODE2

CCM

DCM

MODE1

VIN

VOUT3

INTVCC3

INTVCC4

VOUT4

INTVCC1

SS1

FB1

VOUT1

COMP1

INTVCC2

SS2

COMP2

SS3

SS4

FB1

FB3 FB4

FB2

FB2 FB3 COMP2 COMP3

COMP1

COMP3 COMP4

COMP2

SS2 SS3

SS1

SS3 SS4

SS2

RUN2 RUN3

RUN1

RUN3 RUN4

RUN2

COMP4

COMP3

VOUT2 VOUT3

VOUT1

VOUT3 VOUT4

VOUT2

FB2 FB4

FB3

VOUT2

INTVCC1

INTVCC2

INTVCC3

INTVCC4

VIN

RUN1

RUN2

RUN3

RUN4

RUN1 RUN2 RUN3 RUN4 INTVCC4 INTVCC3 INTVCC1INTVCC2

SIZE

DATE:

IC NO. REV.

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

LTM4643EV

Wednesday, July 29, 2015 1 1

QUAD 3A STEP-DOWN MODULE REGULATOR

SAM Y.

N/A

DEMO CIRCUIT 2453A

SIZE

DATE:

IC NO. REV.

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

LTM4643EV

Wednesday, July 29, 2015 1 1

QUAD 3A STEP-DOWN MODULE REGULATOR

SAM Y.

N/A

DEMO CIRCUIT 2453A

SIZE

DATE:

IC NO. REV.

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

LTM4643EV

Wednesday, July 29, 2015 1 1

QUAD 3A STEP-DOWN MODULE REGULATOR

SAM Y.

N/A

DEMO CIRCUIT 2453A

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

SAM Y.

PRODUCTION

107-29-15

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

SAM Y.

PRODUCTION

107-29-15

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

SAM Y.

PRODUCTION

107-29-15

JP3

R25

100K

R20

150K

OPT

JP7

JP1

10K

R38

OPT

R18

OPT

C22

OPT

R39

OPT

22uF

25V

1206

C25

0.1uF

TP2

PGOOD2

C30

OPT

1206

R45

OPT

R12

60.4K

R35

OPT

C32

100pF

22uF

25V

1206

R28

0805

R46

OPT2512

C37

OPT

C21

OPT

TP1

PGOOD1

JP5

R10

OPT

C41

OPT

JP2

JP8

C18

OPT

22uF

25V

1206

C13

100pF

E11

C38

OPT

1206

TP3

PGOOD3

E10

C14

OPT

1206

C46

0.1uF

C26

0.1uF

JP4

47uF

6.3V

R26

100K

R44

OPT

R21

150K

R19

150K

C28

47uF

6.3V

C42

OPT

R17

OPT

R27

100K

R24

100K

C11

OPT

1206

R34

OPT

R30

100K

C45

0.1uF

C12

OPT

1206

R33

OPT

E15

R36

OPT2512

R11

19.1K

R41

OPT2512

TP4

PGOOD4

R23

100K

R29

100K

E17

R40

OPT

JP6

C29

47uF

6.3V

1206

C16

47uF

6.3V

1206

E14

C10

47uF

6.3V

1206

TP5

CLKOUT

C36

47uF

6.3V

E16

OPT

LTM4643EV

GND

VOUT1

A1 VOUT3 F1

VOUT4 J1

VOUT2

GND

PGOOD2

PGOOD3

PGOOD4

PGOOD1

TEMP F3

CLKOUT J3

INTVCC1

INTVCC2

INTVCC3 J4

INTVCC4 K5

TRACK/SS1

MODE1 B6

RUN1

TRACK/SS2

MODE2 E6

RUN2

TRACK/SS4 K6

MODE4 L6

RUN4

FB4 J7

TRACK/SS3 G6

MODE3 H6

RUN3

FB1

COMP1

CLKIN C7

FB2

COMP2

SGND

FB3 G7

COMP3 H7

COMP4 L7

VIN1 B3

VIN2 E3

VIN3 H3

VIN4 L3

SVIN1 B5

SVIN2 E5

SVIN3 H5

SVIN4 L5

GND

VOUT1

VIN3 H4

VIN4 L4

VIN2 E4

VIN1 B4

VOUT3 G1

VOUT3 G2

VOUT4 K2

VOUT4 K1

GND

E2 GND

H2 GND

GND

G3 GND

GND

D4 GND

G4 GND

GND

VOUT2

D2 VOUT2

R31

100K

E13

40.2K

1uF

C15

OPT

1206

C34

OPT

1206

C31

OPT

C17

47uF

6.3V

22uF

25V

1206

33uF

25V

R43

OPT

E12

R37

OPT

R16

C33

OPT

1206

R32

OPT

13.3K

R15

C35

47uF

6.3V

1206

R22

150K

R42

OPT

C27

OPT

dc2453afb

DEMO MANUAL DC2453A

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ●FAX: (408) 434-0507 ●www.linear.com

LT 0916 REV B • 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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