Linear Technology DC1198A-B Kurzanleitung zur Einrichtung

dc1198abf

DEMO MANUAL DC1198A-B

DESCRIPTION

LTM4607EV: High Density

Buck-Boost Power Module

Demonstration circuit DC1198A-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 DC1198A-B.

Design ﬁles for this circuit board are available at

http://www.linear.com/demo

Specifications are at TA= 25°C

dc1198abf

DEMO MANUAL DC1198A-B

QUICK START PROCEDURE

Demonstration circuit DC1198A-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 DC1198A-B

INPUT OR OUTPUT CAPACITOR

+ –

Figure 2. Proper Scope Probe Placement for

Measuring Input or Output Ripple

VIN

DC1198AB F01

0A TO 5A

LOAD

–

dc1198abf

DEMO MANUAL DC1198A-B

LOAD CURRENT (A)

EFFICIENCY (%)

2 4 86

100

DC1198AB 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

DC1198AB F04

VIN = 6V, VOUT = 12V

CONTINUOUS CURRENT MODE (CCM)

1.25A TO 3.75A LOAD STEP

COUT = 2 ×22µF CERAMIC (1812, X7R, 16V),

2 × 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

dc1198abf

DEMO MANUAL DC1198A-B

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 1 CIN1 Cap., Alum, 100µF, 20%, 50V Sanyo 50ME100WXV+TS

2 2 CIN2, CIN3 Cap., X5R, 4.7µF, 10%, 50V, 1206 Taiyo Yuden UMK316BJ475KL-T

3 1 CSS 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 IRC LRC-LRF1206-01-R015-F

11 1 U1 IC, LTM4607EV#PBF,

15mm × 9mm × 2.3mm LGA

Linear Technology Corporation, LTM4607EV#PBF

Additional Demo Board Circuit Components

1 0 CIN4, 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)

dc1198abf

DEMO MANUAL DC1198A-B

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

However, noresponsibility 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.

SCHEMATIC DIAGRAM

dc1198abf

DEMO MANUAL DC1198A-B

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

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

 LINEAR TECHNOLOGY CORPORATION 2010

LT 0910 • 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

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