Linear Technology LTM8046 Demo Application Manual

DEMO MANUAL DC1559A

LTM8046

3.1V

to 32V

IN

, 2kV Isolated

IN

DC/DC µModule Converter

DESCRIPTION

The demo circuit 1559A features the LTM8046, a 2kVAC,

®

2.5W isolated flyback μModule

converter. The demo circuit is designed for a 5V output from a 3.2V to 26V input. The typical current capability of the 5V output varies with input voltage from about 150mA at V 550mA at V load current to keep the V

= 26V. R2 provides the necessary minimum

IN

in regulation throughout the

OUT

= 4V to about

IN

entire input voltage range. Please see the Typical Performance Characteristics

curves in the LTM8046 data sheet to determine the minimum load current for other input/ output configurations.

PERFORMANCE SUMMARY

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

IN

V

OUT

V

OUT(AC)

Input Supply Range 3.2 26 V

Output Voltage 4.75 5 5.25 V

Output Ripple VIN = 12V, I

Specifications are at TA = 25°C

The LTM8046 data sheet gives complete description of the device, operation and application information. The data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit 1559A.

Design files for this circuit board are available at

http://www.

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.

= 300mA 50 mV

OUT

linear.com/demo

dc1559af

1

DEMO MANUAL DC1559 A

QUICK START PROCEDURE

Demo circuit 1559A is an easy way to evaluate the performance of the LTM8046. Refer to Figure 3 for proper measurement

equipment setup and follow the procedure

below:

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 input or output voltage ripple by touching the probe tip directly across the VIN or

VOUT and GND terminals. See Figure 4 for proper scope

probe technique.

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

and GND.

2. Turn on the power at the input.

700

600

500

400

300

200

OUTPUT CURRENT (mA)

100

Note: Make sure that the input voltage does not exceed 26V.

3. Check for the proper output voltage between VOUT and VOUT-.

Note: If there is no output, temporarily disconnect the load to make sure that the load is not set too high.

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.

0

–20

–40

–60

–80

INTENSITY (dBm)

–100

0

4

6

Figure 1. V

10

8

12

Maximum Output Current vs V

OUT

14 VIN (V)

18

16 20

22

2624

IN

–120

Figure 2. V

0.50 1.5 2.5 3.5 4.5

1 2 3 4 5

FREQUENCY (MHz)

Output Noise Spectrum with I

OUT

at 300mA

OUT

and VIN at 12V

dc1559af

2

QUICK START PROCEDURE

DEMO MANUAL DC1559A

Figure 3. DC1559A Proper Equipment Setup

Figure 4. Measuring Input or Output Ripple

dc1559af

3

DEMO MANUAL DC1559 A

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 1 C1 CAP., CHIP, X7R, 4.7µF, 50V, 10%, 1206 Taiyo Yuden, UMK316BJ475KLT

2 1 C2 CAP., CHIP, X5R, 100µF, 10V, 20%, 1206 TDK, C3216X5R1A107M160AC

3 1 C3 CAP., CHIP, X7R, 4.7µF, 25V, 10%, 0805 TDK, C2012X7R1E475K125AB

4 1 C4 CAP., CHIP, X7R, 0.1µF, 25V, 10%, 0603 AVX, 06033C104K AT2A

5 1 C6 CAP., CHIP, X7R, 1µF, 10V, 10%, 0603 AVX, 0603ZC105K AT2A

6 1 R1 RES., CHIP, 102k, 1%, 1/10W 0603 YAGEO, RC0603FR-07102KL

7 1 R2 RES., CHIP, 100Ω, 1/4W, 1%, 1206 YAGEO, RC1206FR-07100RL

8 1 R3 RES., CHIP, 90.9k, 1%, 1/10W, 1% 0603 YAGEO, RC0603FR-0790K9L

9 1 R4 RES., CHIP, 8.45k, 1%, 1/10W 0603 VISHAY, CRCW06038K45FKEA

10 1 U1 IC., LINEAR LTM8046EY#PBF LINEAR TECH., LTM8046EY#PBF

Additional Demo Board Circuit Components

1 1 CIN1 CAP., TANT, 10µF, 35V, CASE-C AVX, TAJC106K035R

2 0 C5 OPT. 1206

3 0 C7 OPT. 1210

4 0 L1 OPT.

Hardware-For Demo Board Only

1 4 E1-E4 TESTPOINT, TURRET, 0.094" MILL-MAX 2501-2-00-80-00-00-07-0

2 2 E5, E6 TESTPOINT, TURRET, 0.064" MILL-MAX 2308-2-00-80-00-00-07-0

4

dc1559af

SCHEMATIC DIAGRAM

A

B

C

D

E

VOUTE3VOUT

DEMO MANUAL DC1559A

1

4

*

VOUT-E4VOUT-

5V

www.linear.com

E3

E4

C6

1uFC61uF

www.linear.com

1

SHEET OF

E

C7

OPT

1210C7OPT

1210

Milpitas, CA 95035

1630 McCarthy Blvd.

Milpitas, CA 95035

1630 McCarthy Blvd.

Milpitas, CA 95035

R2

100

1206R2100

VOUTA2VOUT

VINK1VIN

L1

C2

A1

VOUT

R1

1206

100uF

10VC2100uF

10V

VOUT-C1VOUT-C2VOUT-C3VOUT-C4VOUT-C5VOUT-C6VOUT-

RUN

L3

1%

102kR1102k

R3

C7

90.9kR390.9k

1%

B7

VOUT-B5VOUT-B6VOUT-

VOUT-A5VOUT-A6VOUT-

BIASL4SS

A7

GND

L7

GND

K7

GND

K6

GND

K5

GND

K4

GND

K3

GND

J7

GND

J6

GND

J5

GND

J4

GND

J3

GND

H7

GND

H6

GND

H5

GND

H4

GND

H3

GND

G7

GND

G6

GND

G5

GND

G4

GND

G3

GND

G2

GND

G1

FB

L6

0.1uF

25V

R4

L5

C4

8.45kR48.45k

C5

1%

OPTC5OPT

1206

B4

A4

A3

B3

VOUT

VOUTB1VOUTB2VOUT

U1

LTM8046EY

VIN

J1

1630 McCarthy Blvd.

CUSTOMER NOTICE

R

Fax: (408)434-0507

Phone: (408)432-1900

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

Phone: (408)432-1900

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

Phone: (408)432-1900

LTC Confidential-For Customer Use Only

LTM8046EY

DEMO CIRCUIT 1559A

TECHNOLOGY

D

Tuesday, May 13, 2014

IC NO. REV.

SCHEMATIC

2kV AC 2.5W ISOLATED µMODULE DC/DC CONVERTER

N/A

SIZE

DATE:

SIZE

DATE:

SIZE

TITLE:

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

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

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

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

DATE:

C

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

C1

4.7uF

L1L1

OPT

VIN VIN

E1

CIN1

+

10uF

**

VINE1VIN

3.2V - 26V

4 4

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.

50V

35V

1206

GNDE2GND

R5

OPTR5OPT

C3

0805

4.7uF

25VC34.7uF

25V

E2

E5

SHDNE5SHDN

E6

BIASE6BIAS

3 3

SEE DEMO MANUAL FOR OUTPUT CURRENT CAPABILITY.

IF VIN IS BELOW OR EQUAL TO 4.3V, USE R5=0.

IF VIN IS ABOVE 4.3V, LEAVE R5 OPEN.

*

**

2 2

1. ALL RESISTORS ARE 0603.

ALL CAPACITORS ARE 0603.

NOTE: UNLESS OTHERWISE SPECIFIED

1 1

B

A

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DEMO MANUAL DC1559 A

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 LT C 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 LT C 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.

LT C 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

Linear Technology Corporation

6

1630 McCarthy Blvd., Milpitas, CA 95035-7417

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

dc1559af

LT 0714 • PRINTED IN USA

 LINEAR TECHNOLOGY CORPORATION 2014

Mouser Electronics

Authorized Distributor

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