Linear Technology LTM4613 Guida rapida alla configurazione

dc1743af

DEMO MANUAL DC1743A

Description

LTM4613

8A, High Voltage Power

µModule Regulator

Demonstration circuit DC1743A features the LTM

4613EV,

an EN55022 class Bcertified, high input andoutput voltage,

high efficiency, switch mode step-down power µModule

regulator. The input voltage range is from 5V to 36V. The

output voltage is jumper programmable from 3.3V to 12V

with a rated load current of 8A. Derating is necessary

for certain VIN, VOUT, frequency and thermal conditions:

please refer to LTM4613 data sheet for derating curves.

Only input and output capacitors are needed externally.

The DC1743A offers the TRACK/SS pin allowing the user

to program output tracking or soft-start period. Output

perForMAnce sUMMArY

BoArD photo

voltage margining can also be realized through jumper

position selections.

Higher efficiency at low load currents is achieved by setting

the MODE pin jumper to DCM. The PLL pin is available

to synchronize the LTM4613EV to an external clock. The

LTM4613 data sheet must be read in conjunction with

this demo manual prior to working on or modifying demo

circuit DC1743A.

Design files for this circuit board are available at

http://www.linear.com/demo

(TA= 25°C)

PARAMETER CONDITIONS VALUE

Input Voltage Range 5V to 36V

Output Voltage VOUT Jumper Selectable 3.3V, 5V, 12V; ± 2%

Maximum Continuous Output Current Derating Is Necessary for Certain Operating Conditions. See Data Sheet

for Details.

8ADC

Default Operating Frequency VOUT = 12V

VOUT = 5V

VOUT = 3.3V

600kHz

250kHz

165kHz

Efficiency VIN = 12V, VOUT = 5V, IOUT = 8A 93.0% See Figure 3

Load Transient VIN = 12V, VOUT = 5V See Figure 4

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

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

dc1743af

DEMO MANUAL DC1743A

qUick stArt proceDUre

Demonstration circuit DC1743A is an easy way to evalu-

ate the performance of the LTM4613EV. Please refer to

Figure 1 for proper measurement equipment setup and

follow the procedure below:

1. Place jumpers in the following positions for a typical

3.3VOUT application:

MODE MARG1 MARG0 VOUT SELECT RUN

CCM LO LO 3.3V ON

2. With power off, connect the input power supply, load

and meters as shown in Figure 1. Preset the load to 0A

and VIN supply to be 0V.

3. Turn on the power at the input. Increase VIN to 12V

(do not hot-plug the input supply or apply more than

the rated maximum voltage of 36V to the board or the

part may be damaged). The output voltage should be

regulated and deliver the selected output voltage ± 2%.

4. Vary the input voltage from 5V to 36V and adjust the

load current from 0A to 8A. Observe the output voltage

regulation, ripple voltage, efficiency, and other param-

eters.

5. To measure input or output ripple, insert the scope

probe to J7 or J4.

6. For optional load transient test, applyan adjustable pulse

signal between IOSTEP_CLK and GND test points. The

pulse amplitude sets the load step current amplitude.

The pulse duty cycle should be low (< 5%) to limit the

thermal stress on the load transient circuit. The load

step current can be monitored with a BNC connected

to J3 (20mV/A). The output voltage can be monitored

at the probe jack J4.

dc1743af

DEMO MANUAL DC1743A

Figure 1. Proper Measurement Equipment Setup

qUick stArt proceDUre

VIN

LOAD

+ –

–

DC1743A F01

–

dc1743af

DEMO MANUAL DC1743A

Efficiency vs Load Current

(VIN = 12V)

Efficiency vs Load Current

(VIN = 24V)

Efficiency vs Load Current

(VIN = 36V)

Figure 3. Measured DC1743A Efficiency at Different VIN and VOUT (DCM Mode Enabled)

Figure 2. Measuring VIN or VOUT Ripple

LOAD CURRENT (A)

EFFICIENCY (%)

100

4 6

DC1743A F03a

VOUT = 3.3V

VOUT = 5V

DC1743A F02

SCOPE PROBE

LOAD CURRENT (A)

EFFICIENCY (%)

100

4 6

DC1743A F03b

VOUT = 3.3V

VOUT = 5V

VOUT = 12V

qUick stArt proceDUre

LOAD CURRENT (A)

EFFICIENCY (%)

100

4 6

DC1743A F03c

VOUT = 3.3V

VOUT = 5V

VOUT = 12V

dc1743af

DEMO MANUAL DC1743A

Figure 5. Thermal Image of LTM4613

Figure 4. Measured Load Transient Responses

VIN = 24V

VOUT = 12V

ILOAD = 8A

AMBIENT TEMPERATURE = 23.3°C

NO FORCED AIR FLOW

DC1743A F05

qUick stArt proceDUre

VIN = 12V, VOUT = 5V

0A TO 4A LOAD STEP

COUT = 1x47µF/16V/POSCAP+3x47µF/16V/X5R+1x10µF/16V/X5R

100µs/DIV

IOUT_STEP

5A/DIV

VOUT

100mV/DIV

DC1743A F04a

VIN = 24V, VOUT = 12V

0A TO 4A LOAD STEP

COUT = 1x47µF/16V/POSCAP+3x47µF/16V/X5R+1x10µF/16V/X5R

IOUT_STEP

5A/DIV

VOUT

200mV/DIV

DC1743A F04b

100µs/DIV

dc1743af

DEMO MANUAL DC1743A

pArts list

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 1 CFF CAP, NPO 47pF 50V 10% 0603 AVX 06035A470KAT1A

2 1 CIN1 CAP, ALUM 100µF 50V 10% SUNCON 50CE100FS

3 5 CIN2, CIN3, C8, C9, C10 CAP, X5R 10µF 50V 20% 1210 TAIYO YUDEN UMK325BJ106MM-T

4 3 COUT1, COUT2, COUT6 CAP, X5R 47µF 16V 20% 1210 TAIYO YUDEN EMK325BJ476MM

5 1 COUT4 CAP, X5R 10µF 16V 20% 1210 TDK C3225X5R1C106M

6 1 COUT5 CAP, X7R 1µF 16V 10% 0603 TDK C1608X7R1C105K

7 1 COUT7 CAP, POSCAP 47µF 16V 20% 7343 SANYO 16TQC47M

8 1 CSS CAP, X7R 0.1µF 16V 20% 0603 AVX 0603YC104MAT2A

9 1 R14 RES, CHIP 22.1k 0.06W 1% 0603 VISHAY CRCW060322K1FKEA

10 1R16 RES, CHIP 13.7k 0.06W 1% 0603 VISHAY CRCW060313K7FKEA

11 1R17 RES, CHIP 5.23k 0.06W 1% 0603 YAYEO, RC0603FR-075K23L

12 2R2, R12 RES, CHIP 51k 0.06W 5% 0603 VISHAY CRCW060351K0JNEA

13 1R15 RES, CHIP 10k 0.06W 5% 0603 VISHAY CRCW060310K0JNEA

14 1R4 RES, CHIP 392k 0.06W 1% 0603 VISHAY CRCW0603392KFKEA

15 1D1 ZENER DIODE, 5.1V SOT23 ON SEMICONDUCTOR MMBZ5231B

16 1U1 I.C., VOLTAGE REG LINEAR TECHNOLOGY CORPORATION LTM4613EV

Additional Demo Board Circuit Components

1 1 Q1 MOSFET, N-CHANNEL 30V VISHAY SILICONIX SUD50N03-09

2 1 C1 CAP, X7R 1µF 16V 10% 0603 TDK C1608X7R1C105K

3 0 COUT3, CIN4, CIN5 (OPT) C A P, 12 10

4 0 CIN6 (OPT) CAP, 0805

5 0 C2, C3, C6, C7, CP (OPT) C A P, 0 6 0 3

6 1 R1 RES, CHIP 10k 0.06W 5% 0603 VISHAY CRCW060310K0JNEA

7 1 R3 RES, LRC 0.020 1W 5% 2512 IRC LRF2512-01-R020-J

8 2 R5, R9 RES, CHIP 0Ω 1/16W 1A 0603 VISHAY CRCW0603000Z

9 0 R6, R7, R8, R10, R11, R13

(OPT)

RES, 0603

Hardware

1 4 JP1, JP2, JP3, JP4 HEADERS, 3 PINS 2mm CTRS SAMTEC TMM-103-02-L-S

2 3 JP5, JP6, JP7 JUMPER, 2 PINS 2mm CTRS SAMTEC TMM-102-02-L-S

3 4 J1, J2, J5, J6 CONNECTOR, BANANA JACK KEYSTONE 575-4

4 1 J3 BNC CONNECTOR CONNEX 112404

5 2 J4, J7 TEST PROBE, CONNECTOR TEKTRONIC 131-4353-00

611 E1 TO E4, E6 TO E12 TURRET, TESTPOINT MILL MAX 2501-2-00-80-00-00-07-0

dc1743af

DEMO MANUAL DC1743A

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.

D D

C C

B B

A A



FSET

VOUT

VIN

REVISION HISTORY

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

NOTE: UNLESS OTHERWISE SPECIFIED.

1. ALL RESISTORS

ALL CAPACITORS

2. INSTALL SHUNTS AS SHOWN.



NOTE: UNLESS OTHERWISE SPECIFIED.

1. ALL RESISTORS

ALL CAPACITORS

2. INSTALL SHUNTS AS SHOWN.



NOTE: UNLESS OTHERWISE SPECIFIED.

1. ALL RESISTORS

ALL CAPACITORS

2. INSTALL SHUNTS AS SHOWN.



PGOOD

VIN

5V - 36V

VIN

5V - 36V

VOUT

3.3V / 5V / 12V

@ 8A

VOUT

3.3V / 5V / 12V

@ 8A

392K

CIN5

(OPT)

1210

CIN5

(OPT)

1210

C10

10uF

C10

10uF

CIN3

10uF

50V

1210

CIN3

10uF

50V

1210

10K

COUT6

47uF

16V

1210

COUT6

47uF

16V

1210

COUT2

47uF

16V

COUT2

47uF

16V

(OPT)

JP7

12V

JP7

12V

IOSTEP

CIN1

100uF

50V

CIN1

100uF

50V

E11

COMP

E11

COMP

CIN2

10uF

50V

1210

CIN2

10uF

50V

1210

CSS

0.1uF

CSS

0.1uF

R11

(OPT)

R11

(OPT)

E12

SGND

E12

SGND

JP3

DCM

CCM

MODE

JP3

DCM

CCM

MODE

R17

5.23K

R17

5.23K

R10

(OPT)

R10

(OPT)

R16

13.7K

R16

13.7K

R14

22.1K

R14

22.1K

COUT1

47uF

16V

COUT1

47uF

16V

(OPT)

VO+

R13

(OPT)

R13

(OPT)

VIN-

5.1V

COUT4

10uF

16V

1210

COUT4

10uF

16V

1210

CIN4

(OPT)

1210

CIN4

(OPT)

1210

51K

LTM4613EV

SGND

H12

DRVCC

E11

FSET

B12

COMP

A11

VFB

F12

PGOOD

G12

RUN

A10

TRACK/SS

PLLIN

INTVCC

MPGM

A12

MARG0

C12

MARG1

D12

VIN

VOUT

J10

VOUT

K10

VOUT

K11

VOUT

L10

VOUT

L11

VOUT

M10

VOUT

M11

PGND

SGND

MPGM

B11

MARG1

C11

DRVCC

E12

COMP

D11

MTP1

J12

MTP2

K12

MTP3

L12

RUN

DRVCC

C10

FCB

M12

PGND

G10

PGND

G11

PGND

H10

PGND

H11

VOUT

J11

(OPT)

0 Ohm

(OPT)

SUD50N03-09

1uF

16V

1uF

16V

(OPT)

VIN

VIN+

COUT3

(OPT)

1210

COUT3

(OPT)

1210

JP5

3.3V

JP5

3.3V

0 Ohm

GND

10uF

50V

1210

10uF

50V

1210

JP2

H I

MARG1

JP2

H I

MARG1

(OPT)

COUT5

1uF

16V

COUT5

1uF

16V

JP6

CIN6

(OPT)

0805

CIN6

(OPT)

0805

R15

10K

R15

10K

VO-

CFF

47pF

CFF

47pF

GND

VOUT

PLLIN

IOSTEP_CLK

JP1

H I

MARG0

JP1

H I

MARG0

0.020

2512

0.020

2512

(OPT)

COUT7

47uF

16V

7343

COUT7

47uF

16V

7343

JP4

OFF

RUN

JP4

OFF

RUN

E10

TRACK/SS

E10

TRACK/SS

10uF

R12

51K

R12

51K

GND

scheMAtic DiAgrAM

dc1743af

DEMO MANUAL DC1743A

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

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

 LINEAR TECHNOLOGY CORPORATION 2011

LT 0411 • 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 applica-

tion engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

Analog Devices Inc.:

DC1743A

Indice

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