Linear DC2053A Demo Manual

DESCRIPTION

DEMO MANUAL DC2053A

LTM4675EY

Dual Step-Down µModule Regulator

with PMBus Power System Management

Demonstration circuit 2053A is a dual-output, high ef-

®

ficiency, high density, µModule from a 4.5V to 17V input range. Each output can supply 9A maximum load current. The demo board features the LTM4675 a dual 9A or single 18A step-down regulator with PMBus digital power system management. Please see the LT M

The DC2053A powers up and regulates its outputs according to Configuration resistors pin-straps ing frequency communication is not needed to configure or evaluate the LTM4675, facilitating quick set up and easy lab evaluation of the DC/DC converter. To fully explore the extensive DPSM features of the part, install the GUI software LTpowerPlay™ onto your PC and use LT C ’s I

®

4675 data sheet for more detailed information.

the LTM4675's factory-default EEPROM settings.

and output

voltage, if desired. Serial bus

regulator, operating

can set device switch-

2

C/SMBus/PMBus dongle

BOARD PHOTO

DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on the fly and store the configuration in the module’s EEPROM, view telemetry of voltage, current, temperature and fault status, and more.

GUI Download

The software can be downloaded from: http://www.linear.com/ltpowerplay

For more details and instructions on LTpowerPlay, please refer to the LTpowerPlay GUI for LTM4675 Quick Start Guide.

Design files for this circuit board are available at

http://www.

L, LT, LTC, LTM, Linear Technology, µModule and the Linear logo are registered trademarks and LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.

linear.com/demo/DC2053A

Figure 1. Dual-Output LTM4675/DC2053A Demo Circuit

dc2053afa

1

DEMO MANUAL DC2053A

PERFORMANCE SUMMARY

PARAMETER CONDITIONS VALUE

Input Voltage Range 4.5V to 17V

Output Voltage, V

Maximum Output Current, I

Output Voltage, V

Maximum Output Current, I

Typical Efficiency V

Default Switching Frequency 500kHz

OUT0

OUT1

Specifications are at TA = 25°C

VIN = 4.5V – 17V, I

VIN = 4.5V – 17V, V

VIN = 4.5V – 17V, I

VIN = 4.5V – 17V, V

= 12V, V

IN

OUT

= 0A to 9A 0.5V to 5.5V, Default: 1V

OUT0

= 0.5V to 5.5V 9A

OUT

= 0A to 9A 0.5V to 5.5V, Default: 1.8V

OUT1

= 0.5V to 5.5V 9A

OUT

= 1.8V, I

= 9A 85.3%

OUT

QUICK START PROCEDURE

Demonstration circuit 2053A is easy to set up to evaluate the performance of the LTM4675EY. Refer to Figure 2 for the proper measurement equipment setup and follow the procedure below.

1. With power off, connect the input power supply to V (4.5V to 17V) and GND (input return).

2. Connect the 1V output load between V

and GND

OUT0

(Initial load: no load).

3. Connect the 1.8V output load between V

OUT1

and GND

(Initial load: no load).

4. Connect the DVMs to the input and outputs. Set default jumper position: JP1: ON; JP2: ON.

5. Turn on the input power supply and check for the proper output voltages. V

should be 1V ±0.5%, and V

OUT0

OUT1

should be 1.8 ±0.5%.

6. Once the proper output voltages are established, adjust the the output voltage

loads within the operating range and observe

regulation, ripple voltage and other

parameters.

7. Connect the dongle and control the output voltages from the GUI. See LTpowerPlay GUI for the LTM4675 Quick Start Guide for details.

Note: When measuring the output or input voltage ripple, do not use the long ground lead on the oscilloscope probe.

IN

See Figure 3 for the proper scope probe technique. Short,

leads need to be soldered to the (+) and (–) terminals

stiff of an output

capacitor. The probe’s ground ring needs to touch the (–) lead and the probe tip needs to touch the (+) lead.

Connecting a PC to DC2053A

You can use a LTpowerPlay on a PC to reconfigure the power management features of the LTM4675 such as: nominal VOUT, margin set points, OV/UV limits, tempera ture fault limits, sequencing parameters, the fault log, fault responses, GPIOs and more. The DC1613A dongle may be plugged when VIN is present.

-

2

dc2053afa

QUICK START PROCEDURE

DEMO MANUAL DC2053A

Figure 2. Proper Measurement Equipment Setup

+ –

Figure 3. Measuring Output Voltage Ripple

C

OUT

V

OUT

GND

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3

DEMO MANUAL DC2053A

DC2053a F05

QUICK START PROCEDURE

Figure 4. Demo Setup with PC

95

90

85

80

V

EFFICIENCY (%)

75

70

65

0

4 82 6

LOAD CURRENT (A)

OUT

V

OUT

V

OUT

V

OUT

V

OUT

V

OUT

V

OUT

Figure 5. Efficiency vs Load Current at V

= 3.3V, 650kHz = 2.5V, 650kHz = 1.8V, 650kHz = 1.5V, 575kHz = 1.2V, 500kHz = 1V, 500kHz = 0.9V, 425kHz

= 5V

IN

93 71 5

4

dc2053afa

QUICK START PROCEDURE

DC2053a F06

95

90

85

80

75

EFFICIENCY (%)

70

65

60

0

DEMO MANUAL DC2053A

4 82 6

LOAD CURRENT (A)

V

= 5V, 1MHz

OUT

V

= 3.3V, 650kHz

OUT

V

= 2.5V, 650kHz

OUT

V

= 1.8V, 650kHz

OUT

V

= 1.5V, 575kHz

OUT

V

= 1.2V, 500kHz

OUT

V

= 1V, 500kHz

OUT

V

= 0.9V, 425kHz

OUT

93 71 5

Figure 6. Efficiency vs Load Current at V

V

OUT0

20MHz BW

20mV/DIV

4A TO 9A

LOAD STEP

Figure 7. Output Voltage V

vs Load Current (V

OUT0

= 12V

IN

DC2053a F07

RANGE = 0)

OUT0

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5

DEMO MANUAL DC2053A

DC2053a F09

QUICK START PROCEDURE

V

OUT1

20MHz BW

20mV/DIV

4A TO 9A

LOAD STEP

DC2053a F08

Figure 8. Output Voltage V

V

OUT0

20MHz BW

10mV/DIV

vs Load Current (V

OUT1

Figure 9. Output Voltage Ripple at VIN = 12V, V

OUT0

RANGE = 0)

OUT1

= 1V, I

OUT0

= 9A

6

dc2053afa

QUICK START PROCEDURE

DC2053a F10

V

OUT1

20MHz BW

20mV/DIV

DEMO MANUAL DC2053A

Figure 10. Output Voltage Ripple at VIN = 12V, V

Figure 11. Thermal Performance at V V

OUT1

= 1.8V, I

= 9A, TA = 24°C, No Airflow

OUT1

= 12V, V

IN

OUT0

= 1.8V, I

= 1V, I

OUT0

= 9A,

= 9A

dc2053afa

7

DEMO MANUAL DC2053A

LTpowerPlay SOFTWARE GUI

LTpowerPlay is a powerful Windows based development environment that supports Linear Technology power system management LTC3883, LTC2974 and LTC2978. The software supports a variety of different tasks. You can use LTpowerPlay to evaluate Linear Technology ICs by connecting to a demo board system. LTpowerPlay can also be used in an offline mode (with no hardware present) in order to build a mul tichip configuration file that can be saved and reloaded at a later time. LTpowerPlay provides unprecedented diagnostic and debug features. It becomes a valuable diagnostic tool during board bring-up to program or tweak the power

ICs, including

the LTM4675, LTC3880,

-

management scheme in a system, or to diagnose power issues when bringing up rails. LTpowerPlay utilizes the DC1613A USB-to-SMBus controller to communicate with LT C PSM modules and ICs. The software also provides an automatic update feature to keep the software current with the latest set of device drivers and documentation. The LTpowerPlay software can be downloaded from:

http://linear.com/ltpowerplay

To access technical support documents for LT C Digital Power Products visit the LTpowerPlay Help menu. Online help also available through the LTpowerPlay.

8

Figure 12. LTpowerPlay Main Interface

dc2053afa

DEMO MANUAL DC2053A

LTpowerPlay QUICK START PROCEDURE

The following procedure describes how to use LTpowerPlay to monitor and change the settings of LTM4675.

1. Download and install the LTpowerPlay GUI:

http://linear.com/ltpowerplay

2. Launch the LTpowerPlay GUI.

a. The GUI should automatically identify the DC2053A. The system tree on the left hand side should look like this:

b. A green message box shows for a few seconds in the lower left hand corner, confirming that LTM4675 is communicating:

Then, click the W (PC to RAM) icon to write these register values to the LTM4675. After finishing this step, you will see the output voltage will change to 1.5V.

c. In the Toolbar, click the R (RAM to PC) icon to read the RAM from the TM4675. This reads the configuration from the RAM of LTM4675 and loads it into the GUI.

d. If you want to change the output voltage to a different value, like 1.5V. In the Config tab, type in 1.5 in the VOUT_COMMAND box, and strike the enter key, as shown:

If the write is successful, you will see the following message:

e. You can save the changes into the NVM. In the tool bar, click RAM to NVM button, as following

f. Save the demo board configuration to a (*.proj) file. Click the Save icon and save the file. Name it whatever you want.

dc2053afa

9

DEMO MANUAL DC2053A

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 1 CIN1 CAP, 150µF, 35V, ALUMINUM ELECTR, SUN ELECT, 35CE150AX

2 2 CIN2, CIN4 CAP, X5R, 10µF, 35V, 10%,1210 MURATA, GRM32ER6YA106KA12

3 6 COUT1 TO COUT3, COUT6 TO COUT8 CAP, X5R, 100µF, 6.3V, 20% 1210 AVX, 12106D107M AT2A

4 2 COUT4, COUT5 CAP, 470µF, 6.3V, POSCAP, D4 SANYO, 6TPF470MAH

5 2 C27, C28 CAP, X5R, 10nF, 25V,10%, 0603 AVX , 06033D103K AT2A

6 3 C21, C22, C24 CAP, X5R, 1µF, 25V,10%, 0603 YAGEO, CC0603KRX5R8BB105

7 1 C23 CAP, X7R, 1µF, 25V,10%, 0805 TAIYO, YUDEN,TDK212BJ105KD-T

8 1 C26 CAP, X5R, 100nF, 25V,10%, 0603 AVX , 06033D104K AT2A

9 2 JP1, JP2 HEADER 3 PIN 0.079 SINGLE ROW SAMTEC, TMM103-02-L-S

10 1 J1 CONN HEADER 14POS 2MM R/A GOLD MOLEX, 87760-1416

11 1 J2 CONN RECEPT 2MM DUAL R/A 14POS SULLINS, NPPN072FJFN-RC

12 3 J3, J4, J12 CONN, BNC, 5PINS CONNEX, 112404

13 1 J11 CONN HEADER 12POS 2MM STR DL PCB FCI 98414-G06-12ULF

14 6 J5 TO J10 BANANA SMALL KEYSTONE, 575-4

15 1 Q1 N-CHANNEL 30-V MOSFET VISHAY, SUD50N03-09P

16 1 Q19 MOSFET P-CH 30V 3.5A SOT-23 DIODES, DMP3130L-7

17 12 R3, R5 TO R7, R9, R23, R25, R31, R32,

18 12 R10 TO R16, R18, R19, R24, R52, R77 RES, CHIP, 10k, 1%, 0603 VISHAY, CRCW060310K0FKEA

19

20 2 R72, R73 RES, CHIP, 4.99k, 1%, 0603 VISHAY, CRCW06034K99FKEA

21 1 R48 RES, CHIP, 0, 0.5W, 2010 NIC, NRC50ZOTRF

22 1 R53 RES, CHIP, 0.01, 1/2W, 1%, 2010 IRC, LRF2010LF-01-R010-F

23 2 R69, R70 RES, CHIP, 10, 1%, 0603 VISHAY, CRCW060310R0FKEA

24 1 R78 RES, CHIP, 15.8k, 1%, 0603 VISHAY, CRCW060315K8FKEA

25 1 U1 IC, LTM4675EY#PBF LINEAR TECHNOLOGY LTM4675EY#PBF

26 1 U3 IC, 24LC025-1/ST TSSOP MICROCHIP, 24LC025-1/ST

Additional Demo Board Circuit Components

1 0 CIN3, CIN5 (OPT) CAP, 1210

2 0 C1, C2, C14 TO C17 (OPT) CAP, 0603

3 0 D1, D2 (OPT) DIODE

4 0 R2, R8, R22, R26 TO R29, R33, R35, R38,

5 R61, R62, R64, R67, R68, R74, R75, R82,

6 0 R50, R51 (OPT) RES, CHIP, 30, 1%, 2512

Hardware: For Demo Board Only

1 24 E1 TO E17, E20 TO E24, E29, E30 TESTPOINT, TURRET, 0.062" MILL-MAX, 2308-2-00-80-00-00-07-0

2 2 XJP1, XJP2 SHUNT SAMTEC, 2SN-BK-G

3 4 (STAND-OFF) STAND-OFF, NYLON 0.50" TALL KEYSTONE, 8833 (SNAP ON)

4 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 2053A

R63, R65, R66

1 R30 RES, CHIP, 6.34k, 1%, 0603 VISHAY, CRCW06036K34FKEA

R41, R49 (OPT)

R83, R88

RES, CHIP, 0, 1%, 0603 VISHAY, CRCW

RES, OPTIONAL

06030000Z0EA

10

dc2053afa

SCHEMATIC DIAGRAM

5

4

3

2

1

13

YINGYI Y.

DEMO MANUAL DC2053A

2

www.linear.com

SHEET OF

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

1.8 / 9A

VOUT1

J6

PRODUCTION2 1-20-15

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

R3

0

470uF

6.3V

COUT4

6TPF470MAH

+

VOUT1

COUT3

100uF

COUT2

100uF

OPT

COUT1

100uF

1210 1210 1210

VOSNS1

C2

OPT

C1

R2

OPT

COMP1a

R6

R5

D D

VOUT1_SNS

E1

C17

P2

0

P1

0.035 VIA

TESTPOINTS

E2

GND

INTVCC

J5

E3

R7 0

OPT

VOUT1

M1

VOUT1

L1

VOUT1

K1

VOUT1

J1

VOSNS1

H7

VORB1

J7

COMP1b

J6

COMP1a

H6

TSNS1a

J3

TSNS1b

K3

SW1

L8

VINH1

M9

VINH1

L9

VINH1

K9

VINH1

J9

A9

VIN

E4

J10

VIN

E7

VIN

R8 OPT

INTVCC

CIN5

CIN4

CIN3

CIN2

CIN1

4.5V - 17V

GND1_SNS

G7

INTVCCF7INTVCC

VINH0D9VINH0C9VINH0B9VINH0

OPT

10uF

OPT

1210 1210 1210 1210

10uF

35V

150uF

+

J9

SYNC

VDD33

SHARE_CLK

E8

E10

E6

ALERTB

SYNC

SHARE_CLK

R19

10K

R18

10K

R16

10K

R15

10K

R14

10K

VDD33

R13

10K

R12

10K

R11

10K

R10

10K

VDD33

J5

VDD33

SW0

VINL

F9

B8

P3

R9 0 E9

E5

GND

ALERTB

SYNC

E5

E11

SCL

SHARE_CLK

H5

SYNC

SCL

E12

SDA

ALERTB

E3

ALERT

SHARE_CLK

SDA

SCL

E4

E13

GPIO0B

SDA

D4

SCL

GPIO0B

SDA

COMP0a

C C

GPIO1B

GPIO0B

GPIO0E2GPIO1

U1

E14

GPIO1B

F2

TSNS0C3TSNS0

D3

GPIO1B

RUN0

R24

10K

RUN1

RUN0

F3

F4

K4

WP

RUN0

RUN1

LTM4675EY

COMP0bD6COMP0a

VORB0+D8VORB0-

E6

P4

R23 0

R22

OPT

C14

OPT

C15

OPT

VOSNS0+

E15

JP1

ON

VDD25

J4

VDD25

E8

P5

R25

VOUT0_SNS

RUN0

OFF

132

R26 (OPT)

ASEL

G2

ASEL

VOSNS0+D7VOSNS0-

E7

VOSNS0-

C16

OPT

0

RUN1

R27 (OPT)

FREQ_CFG

H2

FREQ_CFG

VOUT0A1VOUT0B1VOUT0C1VOUT0

VOUT0

J7

VOUT0

1.0V / 9A

JP2

ON

(OPT)

R29

R28 (OPT)

VOUT0_CFG

G3

VOUT0_CFG

D1

100uF

COUT8

100uF

COUT7

COUT6

100uF

COUT5

470uF

+

OFF

132

R30 6.34K

VTRIM0_CFG

VOUT1_CFG

H3

G4

VTRIM0_CFG

1210 1210

1210

6.3V

6TPF470MAH

J8

GND

RUN1

0

R31

VTRIM1_CFG

H4

VOUT1_CFG

VTRIM1_CFG

VDD25

E16

SGND

G6

SGND

G5

SGND

F6

SGND

F5

GND

M8

GND

M7

GND

M6

GND

M5

GND

M4

GND

M3

GND

M2

GND

L7

GND

L6

GND

L5

GND

L4

GND

L3

GND

L2

GND

K8

GND

K7

GND

K6

GND

K5

GND

K2

GND

J8

GND

J2

GND

R33

OPT

H9

GND

H8

GND

H1

GND

G9

GND

G8

GND

G1

GND

F8

GND

F1

GND

E9

GND

E1

GND

D5

GND

D2

GND

C8

GND

C7

GND

C6

GND

C5

GND

C4

GND

C2

GND

B7

GND

B6

GND

B5

GND

B4

GND

B3

GND

B2

GND

A8

GND

A7

GND

A6

GND

A5

GND

A4

GND

A3

GND

A2

1. ALL RESISTORS ARE 0603.

ALL CAPACITORS ARE 0603.

NOTE: UNLESS OTHERWISE SPECIFIED

R32 0

E17

GND0_SNS

B B

WHEN VIN < 5.75V, SHORT INTVCC TO VIN WITH R8 = 0ohm.

*

LTC Confidential-For Customer Use Only

TECHNOLOGY

SCHEMATIC

TITLE:

HZ

YINGYI Y.

APPROVALS

PCB DES.

APP ENG.

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

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;

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

A A

1

DEMO CIRCUIT 2053A

LTM4675EY

Monday, March 23, 2015

IC NO. REV.

DUAL STEP-DOWN uMODULE REGULATOR

WITH POWER SYSTEM MANAGEMENT

B

SIZE

DATE:

SIZE

DATE:

SIZE

DATE:

SCALE = NONE

2

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

3

4

5

dc2053afa

11

DEMO MANUAL DC2053A

23

SCHEMATIC DIAGRAM

1

J3

VOUT1

5

1

VOUT0 VOUT1

1

J12

C22

VOUT0

1uF

R49

R48

C21

4 3 2

2010

1uF

2 3 4 5

OPT

0.5W

C24

1uF

J4

IOSTEP

C23

1uF

1

Q1

SUD50N03-09P

4 2

0

3

1

R52

10K

E21

IOSTEP_CLK

DO NOT EXCEED 5% DUTY CYCLE!

2

3

DYNAMIC LOAD CIRCUIT

E22

R53

5 4 3 2

GND

0.01

2010

COMP1a

VOSNS1

RUN0RUN1

R42 OPT.

R41 OPT.

R38 OPT

R35 OPT

GPIO0B GPIO1B

OPTIONAL JUMPER FOR DUAL PHASE

SINGLE OUTPUT CONFIGURATION

COMP0a

VOSNS0+

www.linear.com

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

TECHNOLOGY

IC NO. REV.

SCHEMATIC

DUAL STEP-DOWN uMODULE REGULATOR

WITH POWER SYSTEM MANAGEMENT

SIZE

TITLE:

HZ

YINGYI Y.

APPROVALS

PCB DES.

APP ENG.

2

1

SHEET OF

DEMO CIRCUIT 2053A

LTM4675EY

2

Monday, March 23, 2015

N/A

DATE:

SCALE = NONE

3

4

5

ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN

D D

12

C C

VOUT0 VOUT1

R51

R50

2010 2010

OPT

E23

BLEEDER LOADS

SGND

E24

SGND

B B

CUSTOMER NOTICE

4

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

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

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

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.

A A

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

5

dc2053afa

DEMO MANUAL DC2053A

5

4

3

2

1

33

SCHEMATIC DIAGRAM

2

www.linear.com

GPIO1B

GPIO0B

RUN0

E29

R62

OPT

D1

OPT

R64

OPT

D2

OPT

R63 0

R61 OPT

R65 0

RUN1

E30

FAULTB1CTRL2ALERTB3SDA4SHARE_CLK5SCL6RESETB7AUXP8UNUSED9UNUSED10GND11GND1212V1312V

R68 OPT

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

C28

10nF

R70

10

C27

R69

10nF

10

J2, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn. NPPN072FJFN-RC

J1 DEMO HEADER (M)

14

R88

OPT

LTC Confidential-For Customer Use Only

TECHNOLOGY

SCHEMATIC

DUAL STEP-DOWN uMODULE REGULATOR

TITLE:

HZ

YINGYI Y.

APPROVALS

PCB DES.

APP ENG.

SHEET OF

1

DEMO CIRCUIT 2053A

LTM4675EY

Monday, March 23, 2015

IC NO. REV.

WITH POWER SYSTEM MANAGEMENT

N/A

SIZE

DATE:

SIZE

DATE:

SIZE

DATE:

2

SCALE = NONE

R89

R82

OPT

J2 DEMO HEADER (F)

R73

4.99K

R72

4.99K

100nF

AUXVCC

8

VCC

U3

A01A12A23VSS

1206

EEWP

7

OPT

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.

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.

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

VIN

R74 OPT

R75 OPT

PSM STACKING CONNECTORS:

J1, MALE, CONN HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416

VDD33

23

Q19

DMP3130L-7

EESDA

EESCL

5

6

WP

SCL

SDA

24LC025-I/ST

4

3V3 VDD33

OPTIONAL CIRCUIT FOR PROGRAMMING

WITHOUT VIN

R78

15.8k

1

R77 10K

VIN

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

3

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

4

5

R67

OPT

0

R66

R83

OPT

3V3

SYNC

SHARE_CLK

3

4

2

1

SDA

CTRL

FAULTB

ALERTB

ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN

ALERTB SDA SCL

E20

AUXP

3V3

6

5

7

3

2

1

AUXP

J11

10

11

4

9

SCL

SDA

GND

GPIO_1

ALERTB

AUXSCL

LGKPWR

OUTEN_08OUTEN_1

7

6

5

SCL

RESETB

SHARE_CLK

12

AUXSDA

8

10

AUXP

UNUSED9UNUSED

C26

TO DC1613A

12

GND11GND

14

12V1312V

D D

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.

C C

B B

A A

dc2053afa

13

DEMO MANUAL DC2053A

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LT C ) 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 LT C application engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

Linear Technology Corporation

14

1630 McCarthy Blvd., Milpitas, CA 95035-7417

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

dc2053afa

LT 0515 REV A • PRINTED IN USA

 LINEAR TECHNOLOGY CORPORATION 2015