Linear Technology DC1198B-B Quick setup guide

dc1198bbfa

DEMO MANUAL DC1198B-B

DESCRIPTION

LTM4607EV: High Density

Buck-Boost Power Module

Demonstration circuit DC1198B-B features the

LT M

4607EV, a high efﬁciency, high density switch mode

buck-boost power module. The LTM4607EV can regulate

its output voltage from input voltage both above and below

the output. The board accepts an input voltage from 6V

to 36V and is set for an output voltage of 12V. The rated

load current is 5A in boost mode and 12A in step-down

operation. Derating is necessary for certain VIN, VOUT

and thermal conditions. The switching frequency can be

synchronized to external clock operating from 200kHz to 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.

PARAMETER CONDITION VALUE

Input Voltage Range 6V to 36V

Output Voltage VOUT DC Voltage, VIN = 12V, IOUT = 5A 12V, ±2%

Maximum Continuous Output Current Step-Up

Step-Down

Derating Is Necessary for Certain VIN, VOUT and Thermal Conditions

5ADC (6VIN)

12ADC (VIN > 12V)

Default Operating Frequency 300kHz

Efﬁciency VIN = 12V, VOUT = 12V, IOUT = 5A 97.4%, See Figure 3 for More

Information

BOARD PHOTO

PERFORMANCE SUMMARY

400kHz. This clock input can be used to reduce undesir-

able frequency harmonics and reduce input and output

ripple when paralleling LTM4607 modules for even higher

output current. The LTM4607 data sheet must be read

in conjunction with this demo manual for working on or

modifying the demo circuit DC1198B-B.

Design ﬁles for this circuit board are available at

http://www.linear.com/demo

Specifications are at TA= 25°C

dc1198bbfa

DEMO MANUAL DC1198B-B

QUICK START PROCEDURE

Demonstration circuit DC1198B-B provides a simple way

to evaluate the performance of the LTM4607EV. Please

refer to Figure 1 for the proper measurement equipment

set-up, and follow the procedure below:

1. Place jumpers in the following positions for a typical

12VOUT application:

RUN CLOCK MODE START

On Prog CCM SSO

2. With the power off, preset the load to 0A and the VIN

supply to less than 36V. Next, connect the input power

supply, load and meters, as shown in Figure 1.

3. Turn on the power at the input. The output voltage

should be 12V, ±2%.

4. Once the proper output voltage is established, adjust

the load within the operating range and observe the

output voltage regulation, ripple voltage, efﬁciency

and other parameters. The cooling fan and lower cur-

rent sensing resistor are necessary for VIN < 6V and

IOUT = 5A.

5. To measure the input and output ripple, please refer

to Figure 2 for the proper set-up.

6. The voltage at PLLFLTR determines the switching

frequency. Modify R6 and R7 to adjust the switching

frequency. Do not allow the voltage at pin PLLFLTR

to exceed 2.4V.

7. Inductor and RSENSE should be modiﬁed to accom-

modate certain input and output conditions. Please

refer to Table 1 for recommended inductors.

Figure 1. Test Set-Up of the DC1198B-B

INPUT OR OUTPUT CAPACITOR

+–

Figure 2. Proper Scope Probe Placement for

Measuring Input or Output Ripple

VIN

DC1198BB F01

0A TO 5A

LOAD

–

dc1198bbfa

DEMO MANUAL DC1198B-B

LOAD CURRENT (A)

EFFICIENCY (%)

24 86

100

DC1198BB F03

VIN = 6V

VIN = 12V

VIN = 32V

QUICK START PROCEDURE

Figure 3. Measured Supply Efﬁciency

with Different VIN

Figure 4. Measured Load Transient Response

(2.5A Step, 25% to 75%)

200μs/DIV

VO(AC)

100mV/DIV

ISTEP

2A/DIV

DC1198BB F04

VIN = 6V, VOUT = 12V

CONTINUOUS CURRENT MODE (CCM)

1.25A TO 3.75A LOAD STEP

COUT = 2 w22μF CERAMIC (1812, X7R, 16V),

2 w180μF OSCON 16V

VOOVERSHOOT AND UNDERSHOOT = 413mV

Table 1. Recommended Inductors for Different Input and Output Conditions: fSW = 400kHz

VIN

(V)

VOUT

(V)

RSENSE

(0.5W RATING)

INDUCTOR

(μH)

IOUT(MAX)*

(A) INDUCTOR

12 8 2 × 18mΩ, 0.5W 2.2 12 FDA1254-2R2M Toko CDEP134-2R5 Sumida

20 8 2 × 18mΩ, 0.5W 3.3 12 FDA1254-3R3M Toko CDEP145-3R5 Sumida

5 10 2 × 14mΩ, 0.5W 1.5 6 FDA1254-1R2M Toko CDEP134-1R6 Sumida

15 10 2 × 18mΩ, 0.5W 2.2 12 FDA1254-2R2M Toko CDEP134-2R5 Sumida

20 10 2 × 18mΩ, 0.5W 3.3 12 FDA1254-3R3M Toko CDEP145-3R5 Sumida

6 12 2 × 14mΩ, 0.5W 2.2 6 FDA1254-2R2M Toko CDEP134-2R5 Sumida

16 12 2 × 18mΩ, 0.5W 2.2 12 FDA1254-2R2M Toko CDEP134-2R5 Sumida

20 12 2 × 18mΩ, 0.5W 3.3 12 FDA1254-3R3M Toko CDEP145-3R5 Sumida

5 16 2 × 14mΩ, 0.5W 2.2 4 FDA1254-2R2M Toko CDEP134-2R5 Sumida

8 16 2 × 18mΩ, 0.5W 3.3 5 FDA1254-3R3M Toko CDEP145-3R5 Sumida

12 16 2 × 22mΩ, 0.5W 3.3 6 FDA1254-3R3M Toko CDEP145-3R5 Sumida

20 16 2 × 22mΩ, 0.5W 2.5 10 FDA1254-2R2M Toko CDEP134-2R5 Sumida

* Note: Per the manufacturer’s speciﬁcation sheet, Toko FDA1254 inductors are not recommended for VIN > 30V. Please visit Toko’s website for

more information.

Table 2. RSENSE Vendors

RSENSE VENDOR PART NUMBER

Vishay Power Metal Strip Resistors WSL1206, 0.5W

Panasonic Thick Film Chip Resistors ERJ12, 0.5W

dc1198bbfa

DEMO MANUAL DC1198B-B

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

11C

IN1 Cap., Alum, 100μF, 20%, 50V Sanyo 50ME100WXV+TS

22C

IN2, CIN3 Cap., X5R, 4.7μF, 10%, 50V, 1206 Taiyo Yuden UMK316BJ475KL-T

31C

SS Cap., X7R, 0.01μF, 25V, 10%, 0603 AVX 06033C103KAT4A

4 2 CO3, CO4 Cap., X7R, 22μF, 16V, 20%, 1812 TDK C4532X7R1C226M

5 2 CO5, CO6 Cap., OS-CON, 180μF, 16V Sanyo 16SVP180MX

6 1 L1 Ind. Iron Power Smt Fixed, 4.7μH Toko FD1254-4R7M

7 1 R5 Res., Chip, 7.15k, 1/16W, 1%, 0603 Vishay CRCW06037K15FKEA

8 1 R6 Res., Chip, 4.64k, 1/16W, 1%, 0603 Vishay CRCW06034K64FKEA

9 1 R7 Res., Chip, 1.21k, 1/16W, 1%, 0603 Vishay CRCW06031K21FKEA

10 2 RS1, RS2 Res., Chip, 0.015 1/2W, 1%, 1206 Vishay WSL1206R0150FEA

11 1 U1 IC, LTM4607EV#PBF,

15mm × 9mm × 2.3mm LGA

Linear Technology Corporation, LTM4607EV#PBF

Additional Demo Board Circuit Components

10C

IN4, CIN5 (Opt) Cap., 1206

2 0 C2, C4, C5, CP, CFF (Opt) Cap., 0603

3 0 CO1, CO2 (Opt) Cap., SVP, 100μF, D3L

4 0 CO7 (Opt) Cap., 1206, 16V

5 0 CO8 (Opt) POSCAP, D3L

6 2 D1, D2 Zener Diode, 4.7V Central Semi., CMDZ5230B-7-F

7 1 R1 Res., Chip, 100k, 1/16W, 5%, 0603 Vishay, CRCW0603100KJNEA

8 1 R2 Res., Chip, 51k, 1/16W, 5%, 0603 Vishay, CRCW060351K0JNEA

9 1 R8 Res., Chip, 20k, 1/16W, 1%, 0603 Vishay, CRCW060320K0FKEA

10 1 RS3 (Opt) Res.,1206

11 1 R9, RUVLO (Opt) Res., 0603

Hardware, for Demo Board Only

1 2 JP1, JP2 2mm Single Row Header, 3 Pin Samtec, TMM-103-02-L-S

2 2 JP3, JP4 2mm Single Row Header,, 4 Pin Samtec, TMM-104-02-L-S

3 4 JP1, JP2, JP3, JP4 Shunt Samtec, 2SN-BK-G

4 10 TP1, TP4, TP5, TP7, TP9,

TP11-TP15

Testpoint, Turret, 0.095" Mill-Max, 2501-2-00-80-00-00-07-0

5 4 TP2, TP3, TP8, TP10 Banana Jack Keystone, 575-4

6 4 Stand-Off Stand-Off, Nylon, 0.50" Tall Keystone, 8833 (Snap On)

dc1198bbfa

DEMO MANUAL DC1198B-B

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 representation

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

A A

B B

5A MAX

RUN

OFF

DCM

CCM

BS (BURST/SKIP_CYCLE) OFF

SSO (SOFT START ON)

LO (LDO ON)

EXT

PROG

CLOCK

12V

MODE

Degrading Necessary for Certain Input

and Output Voltages.

START

DCM

SOFT

START ON

LDO ON

OFF

MODE

OFF

SSO

BURST/

START

CCM CCM

DCM

SKIP_CYCLE

VERSION

4.7uH

3.3uH- A

L Cin1 Cin2, Cin3

35V, 150uF 10uF, 35V, 1206, X7R

4.7uF, 50V, 1206, X5R

ASSY TABLES

50V, 100uF

LTM4605EV

LTM4607EV

** **

- B

VIN

4.5V - 20V

6V - 36V

HIGH DENSITY BUCK-BOOST POWER μMODULE R

VSS

VIN

INTVCC

VOUT

VIN

INTVCC

VIN

INTVCC

SIZE

DATE:

.VER.ONCI

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

Thursday, January 24, 2013

SAM Y.

N/A

LTM4605EV / LTM4607EV

DEMO CIRCUIT 1198B-A/B

SIZE

DATE:

.VER.ONCI

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

Thursday, January 24, 2013

SAM Y.

N/A

LTM4605EV / LTM4607EV

DEMO CIRCUIT 1198B-A/B

SIZE

DATE:

.VER.ONCI

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

Thursday, January 24, 2013

SAM Y.

N/A

LTM4605EV / LTM4607EV

DEMO CIRCUIT 1198B-A/B

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

SAM Y.PRODUCTION 21-82-91

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

SAM Y.PRODUCTION 21-82-91

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

SAM Y.PRODUCTION 21-82-91

TP15

INTVCC TP15

INTVCC C5

(OPT)

TP11 VO-

RS3

(OPT)

RS3

(OPT)

TP3

VIN- TP3

VIN- R9

(OPT)

JP1JP1

Cin2

10uF

Cin2

10uF

(OPT)

Cin4

(OPT)

Cin4

(OPT)

L1L1

RS1

0.015

RS1

0.015

U1U1

VIN

L12

VIN

K11

VIN

J10

VIN

M10 VIN

L11 VIN

L10 VIN

K12

VIN

J11 VIN

J12 VIN

K10

GND

C11 GND

C10 GND

C9 GND

C8 GND

GND

C5 GND

C4 GND

C3 GND

C2 GND

GND

B4 GND

B3 GND

GND

A3 GND

A2 GND

VOUT G2

VOUT G3

VOUT G4

VOUT H1

VOUT H2

VOUT H3

VOUT H4

COMP

EXTVCC

RSENSE G5

GND

C12 GND

D1 GND

D2 GND

D3 GND

GND

D9 GND

D8 GND

D7 GND

D6 GND

GND

D10

VFB B6

SW1 J1

SW2 J8

VOUT G1

VOUT E2

VOUT E1

VIN

M11 VIN

M12

INTVCC

PGOOD

RUN

PLLFLTR

PLLIN

FCB

STNDBY

A10

SGND

GND

D11 GND

D12 GND

E3 GND

E4 GND

E5 GND

E6 GND

E7 GND

E8 GND

E9 GND

E10 GND

E11 GND

E12

GND

A11 GND

A12

GND

B10 GND

B11 GND

B12

SENSE+ A4

SENSE- A5

RSENSE G6

RSENSE G7

RSENSE G8

RSENSE G9

RSENSE G10

RSENSE G11

RSENSE G12

RSENSE H5

RSENSE H6

RSENSE H7

RSENSE H8

RSENSE H9

RSENSE H10

RSENSE H11

RSENSE H12

RSENSE J5

RSENSE J6

RSENSE J7

RSENSE K5

RSENSE K6

RSENSE L5

RSENSE L6

RSENSE M5

RSENSE M6

RSENSE F10

RSENSE F11

RSENSE F12

VOUT F1

VOUT F2

VOUT F3

VOUT F4

SW1 J2

SW1 J3

SW1 J4

SW1 K1

SW1 K2

SW1 K3

SW1 K4

SW1 L1

SW1 L2

SW1 L3

SW1 L4

SW1 M1

SW1 M2

SW1 M3

SW1 M4

SW2 J9

SW2 K7

SW2 K8

SW2 K9

SW2 L7

SW2 L8

SW2 L9

SW2 M7

SW2 M8

SW2 M9

NC F8

NC F9

NC F7

RUVLO

(OPT)

RUVLO

(OPT)

Cin1

RS2

0.015

RS2

0.015

CFF

(OPT)

CFF

(OPT)

1.21K

TP7 VO+

CO5

180uF

16V

CO5

180uF

16V

51K

TP9

EXTVCC TP9

EXTVCC

JP4JP4

Cin5

(OPT)

Cin5

(OPT)

TP1

VIN TP1

VIN

CO3

22uF

25V

CO3

22uF

25V

CMDZ5230B

2 1

TP13

SGND TP13

SGND

CO7

(OPT)

16V

CO7

(OPT)

16V

7.15K

TP2

VIN+ TP2

VIN+

TP5

PGOOD TP5

PGOOD

TP4

GND TP4

GND

TP12

SOFT START TP12

SOFT START

CO4

22uF

25V

CO4

22uF

25V

CO8

(OPT)

CO8

(OPT)

JP3JP3

TP14

EXT. CLOCK TP14

EXT. CLOCK

Cin3

10uF

Cin3

10uF

CSS 10nF

JP2JP2

TP10

GND

TP10

GND

CO2

(OPT)

CO2

(OPT)

C2 (OPT)C2 (OPT)

TP8 VOUT

R8 20KR8 20K

C4 (OPT)

10V

C4 (OPT)

10V

100K

CO1

(OPT)

CO1

(OPT)

R6 4.64KR6 4.64K

CO6

180uF

16V

CO6

180uF

16V

CMDZ5230B

2 1

SCHEMATIC DIAGRAM

dc1198bbfa

DEMO MANUAL DC1198B-B

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

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

LT 0213 REV A • 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 direc-

tive 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.:

DC1198B-B

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