Linear Technology LTM4677EY Demo Manual

DESCRIPTION

DEMO MANUAL DC2066A

LTM4677EY

Dual 18A or Single 36A µModule Regulator

With Digital Power System Management

Demonstration circuit 2066A is a dual-output, high efficiency, high density, µModule regulator with 16V input range. Each output can supply 18A maximum load current. The demo board has a LT M regulator, which is a dual 18A or single 36A step-down regulator with digital power system management. Please see the LTM4677 data sheet for more detailed information.

DC2066A powers up to default settings and produces power based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay™ onto your PC and use LTC’s

2

C/SMBus/PMBus dongle DC1613A to connect to the

I

®

4677 µModule

4.5V to

BOARD PHOTO

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

GUI Download

The software can be downloaded from:

http://www.linear.com/ltpowerplay

For more details and instructions of L refer to LTpowerPlay GUI for LTM4677 Quick Start Guide.

Design files for this circuit board are available at

http://www.linear.com/demo/DC2066A

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

TpowerPlay

, please

Figure1. Dual-Output LTM4677/DC2066A Demo Circuit

dc2066af

1

DEMO MANUAL DC2066A

PERFORMANCE SUMMARY

Table 1. Performance Summary (TA = 25°C)

PARAMETER CONDITIONS MIN TYP MAX UNITS

Input Voltage Range 4.5 16 V

Output Voltage, V

Maximum Output Current, I

Output Voltage, V

Maximum Output Current, I

Typical Efficiency V

Default Switching Frequency 500 kHz

OUT0

OUT1

VIN = 4.5V to 16V, I

VIN = 4.5V to 16V, V

VIN = 4.5V to 16V, I

VIN = 4.5V to 16V, V

= 12V, V

IN

OUT1

= 0A to 18A 0.5 1.8 V

OUT0

= 0.5V to 1.8V 18 A

OUT0

= 0A to 18A 0.5 1.8 V

OUT1

= 0.5V to 1.8V 18 A

OUT1

= 1.8V, I

= 18A 87.9

OUT1

(See Figures 5 and 6)

QUICK START PROCEDURE

Table 2. LTM4677 Demo Boards for Up To 140A Point-of-Load Regulation

MAXIMUM OUTPUT CURRENT NUMBER OF OUTPUTS

Dual 18A 2 1 DC2066A

70A 1 2 DC2143A-A

105A 1 3 DC2143A-B

140A 1 4 DC2143A-C

µMODULE REGULATORS ON THE BOARD DEMO BOARD NUMBER

NUMBER OF LTM4676

%

Demonstration circuit 2066A is easy to set up to evaluate the performance of the LTM4677EY. 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

IN

(4.5V to 16V) and GND (input return).

2. Connect the 1.0V output load between V

OUT0

and GND

(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: SW1: ON; SW2: ON.

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

should be 1.0V ±1%, and V

OUT0

OUT1

should be 1.8V ±1%.

6. Once the proper output voltages are established, adjust the loads within the operating range and observe the output voltage regulation, ripple voltage and other parameters.

7. Connect the dongle and control the output voltages from the GUI. See “LTpowerPlay GUI for the LTM4677 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. See Figure 3 for the proper scope probe technique. Short, stiff leads need to be soldered to the (+) and (–) terminals of an output capacitor. The probe’s ground ring needs to touch the (–) lead and the probe tip needs to touch the (+) lead.

2

dc2066af

+

–

+

–

+

–

+

–

+

–

+

–

QUICK START PROCEDURE

DEMO MANUAL DC2066A

I

OUT1

LOAD1

0A TO 18A

V

OUT1

I

4.5V TO 16V

IN

V

IN

DC2066A F02

Figure2. Proper Measurement Equipment Setup

I

OUT0

LOAD0

0A TO 18A

V

OUT0

+ –

C

OUT

V

OUT

GND

Figure3. Measuring Output Voltage Ripple

dc2066af

3

DEMO MANUAL DC2066A

QUICK START PROCEDURE

Connecting a PC to DC2066A

You can use a PC to reconfigure the power management features of the LTM4677 such as: nominal V

, margin

OUT

set points, OV/UV limits, temperature fault limits, sequenc-

USB CABLE

12-PIN (J1)

2

USB TO I

C/PMBus

DONGLE DC1613A

CONNECTOR

ing parameters, the fault log, fault responses, GPIOs and

. The

other functionalities when V

is present.

IN

DC1613A dongle may be plugged

INPUT POWER

SUPPLY

IN

V

OUT0

LOAD0

LTM4677 DEMO

BOARD DC2066A

V

OUT1

LOAD 1

Figure4. Demo Setup with PC

95

VIN = 5V, fS = 500kHz, CCM

90

85

80

75

EFFICIENCY (%)

70

65

60

0.0

10.06.0 14.0

LOAD CURRENT (A)

VO = 0.9V

= 1.0V

V

O

= 1.2V

V

O

= 1.5V

V

O

= 1.8V

V

O

18.08.0 16.04.0 12.02.0

95

VIN = 12V, fS = 500kHz, CCM

90

85

80

75

EFFICIENCY (%)

70

65

60

0.0

10.06.0 14.0

LOAD CURRENT (A)

VO = 0.9V

= 1.0V

V

O

= 1.2V

V

O

= 1.5V

V

O

= 1.8V

V

O

18.08.0 16.04.0 12.02.0

Figure5. Efficiency vs Load Current at VIN=5V Figure6. Efficiency vs Load Current at VIN=12V

dc2066af

4

QUICK START PROCEDURE

DEMO MANUAL DC2066A

0A TO 4.5A

LOAD STEP

V

OUT0

(20MHz BW)

20mV/DIV

Figure7. Output Voltage V

(V

=1.0V), Measured by 1X Probe on C

OUT0

V

OUT0

(20MHz BW)

20mV/DIV

50µs/DIV

1.0µs/DIV

vs Load Current

OUT0

OUT8

0A TO 4.5A

LOAD STEP

V

OUT1

(20MHz BW)

20mV/DIV

Figure8. Output Voltage V

(V

=1.8V), Measured by 1X Probe on C

OUT1

V

OUT1

(20MHz BW)

20mV/DIV

50µs/DIV

1.0µs/DIV

vs Load Current

OUT1

OUT3

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

V

OUT0

=1.0V, I

=18A, Measured by 1X Probe on C

OUT0

Figure11. Thermal at VIN = 12V, V

OUT0

=1.0V, I

OUT8

OUT0

= 18A, V

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

V

OUT1

= 1.8V, I

= 18A, Measured by 1X Probe on C

OUT1

= 18A, TA = 25°C, 200LFM Airflow

OUT1

OUT3

dc2066af

5

DEMO MANUAL DC2066A

LTpowerPlay SOFTWARE GUI

LTpowerPlay is a powerful Windows based development environment that supports Linear Technology power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTC3880, LTC3882, 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 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 one of many potential targets, including the LTM4675, LTM4676, LTM4677, LTC3880, LTC3882, LTC3883’s demo system or a customer board. The software also provides an automatic update feature to keep the software current with the latest set of device drivers and documenta tion. The LTpowerPlay software can be downloaded from:

http://linear.com/ltpowerplay

To access technical support documents for LTC Digital Power Products visit Help. View online help on the LTpowerPlay menu.

-

6

Figure 12. LTpowerPlay Main Interface

dc2066af

LTpowerPlay QUICK START GUIDE

The following procedure describes how to use LTpowerPlay to monitor and change the settings of LTM4677.

1.Download and install the LTpowerPlay GUI:

http://linear.com/ltpowerplay

2. Launch the LTpowerPlay GUI.

a. The GUI should automatically identify the DC2066A.

The system tree on the left hand side should look like this:

DEMO MANUAL DC2066A

b. A blue message box shows for a few seconds in the

lower left hand corner, confirming that LTM4677 is communicating:

c. In the Toolbar, click the “R” (RAM to PC) icon to

read the RAM from the LTM4677. This reads the configuration from the RAM of LTM4677 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, like this:

Then, click the “W” (PC to RAM) icon to write these register values to the LTM4677. After finishing this step, you will see the output voltage will change to 1.5V.

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.

dc2066af

7

DEMO MANUAL DC2066A

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 1 CIN1 CAP., 150µF, 35V, ALUMINUM ELECTR., SUN ELECTRONIC INDUSTRIES, 35CE150AX

2 4 CIN2, CIN3, CIN4, CIN5 CAP., X5R, 10µF, 35V, 10%, 1210 MURATA, GRM32ER6YA106KA12

3 6 COUT1-COUT3, COUT6-COUT8 CAP., X5R, 100µF, 6.3V, 20% 1210 AVX, 12106D107MAT2A

4 6 COUT4, COUT5, COUT9-12 CAP., 470µF, 2.5V, SP-CAP, D SIZE PANASONIC, EEFGX0E471R

5 1 C26 CAP., X5R, 100nF, 16V, 10%, 0603 AVX, 0603YD104KAT

6 2 C27, C28 CAP., X7R, 10nF, 25V, 5%, 0603 AVX, 06033C103JAT

7 1 C23 CAP., X7R, 1µF, 25V, 10%, 0805 AVX, 08053C105KAT2A

8 3 C21, C22, C24 CAP., X5R, 1µF, 25V, 10%, 0603 AVX, 06033D105KAT2A

9 12 R10-R16, R18, R19, R24, R52, R77 RES., CHIP, 10k, 1%, 0603 NIC, NRC06F1002TRF

10 1 R30 RES., CHIP, 6.34k, 1%, 0603 VISHAY, CRCW06036K34FKEA

11 2 R72, R73 RES., CHIP, 4.99k, 1%, 0603 NIC, NRC06F4991TRF

12 1 U1 I.C., LTM4677EY#PBF LINEAR TECH., LTM4677EY#PBF

2

13 1 U2 I.C., EEPROM SERIAL-I

14 2 R2, R22 RES., CHIP, 17.8k, 1%, 0603 VISHAY, CRCW060317K8FKEA

15 2 C1, C14 CAP., X7R, 1.8nF, 25V, 5%, 0603 AVX, 06033C182JAT2A

Additional Demo Board Circuit Components

16 0 C2,

17 1 Q1 N-CHANNEL 30-V MOSFET VISHAY, SUD50N03-09P

18 10 R3, R7, R9, R25, R31, R32, R33,

19 0 R8, R26, R27, R28, R29, R35, R38,

20 0 R17, R20, R49, R82 (OPT) RES., CHIP OPTIONAL

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

22 1 R53 RES., CHIP, 0.01Ω, 1/2W, 1%, 2010 VISHAY, WSL2010R0100FEA

23 2 R69, R70 RES., CHIP, 10Ω, 1%, 0603 NIC, NRC06F10R0TRF

24 1 R78 RES., CHIP, 15.8k, 1%, 0603 NIC, NRC06F1582TRF

25 0 D1, D2 (OPT) DIODE OPTIONAL

26 1 Q19 MOSFET P-CH 20V 0.58A SOT-23 VISHAY TP0101K-T1-E3

Hardware: For Demo Board Only

27 2 SW0, SW1 HEADER 3 PIN 0.079 SINGLE ROW SAMTEC, TMM103-02-L-S

28 3 J2-J4 CONN, BNC, 5 PINS CONNEX, 112404

29 1 J1 CONN HEADER 12POS 2mm STR DL PCB FCI 98414-G06-12ULF

30 24 E1-E24 TESTPOINT, TURRET, 0.062" MILL-MAX, 2308-2-00-80-00-00-07-0

31 6 J5-J10 BANANA SMALL KEYSTONE, 575-4

32 2 XJP1, XJP2 SHUNT SAMTEC, 2SN-BK-G

33 4 (STAND-OFF) STAND-OFF, NYLON 0.50" tall KEYSTONE, 8833(SNAP ON)

34 1 J12 CONN RECEPT 2mm DUAL R/A 14POS SULLINS, NPPN072FJFN-RC

35 1 J11 CONN HEADER 14POS 2mm R/A GOLD MOLEX, 87760-1416

C15-C17 (OPT) CAP

R63, R65, R66

R41, R61, R62, R64, R67, R68, R74, R75, R83, R88, R89, R6, R23 (OPT)

., 0603 OP

RES., CHIP, 0Ω, 1%, 0603 NIC, NRC06Z0000TRF

RES., 0603 OPTIONAL

TIONAL

C, 2k-BIT, I.C., TSSOP-8 MICROCHIP, 24LC025-I/ST

8

dc2066af

SCHEMATIC DIAGRAM

5

4

3

2

1

D

C

B

A

DEMO MANUAL DC2066A

ALERTB

SYNC

E7

A5

R17 OPT

E11

SCL

SHARE_CLK

H7

SYNC

SNUB0

0805

SCL

E12

SDA

ALERTB

E5

ALERT

SHARE_CLK

ISNS0a-E1ISNS0b-

E2

SDA

SCL

E6

F2

GPIO0B

SCL

ISNS0b+F1ISNS0a+

E13

SDA

D6

COMP0a

C

GPIO0B

SDA

U1

GPIO1B

E14

GPIO1B

RUN0

GPIO1B

F5

K6

F4

WP

GPIO0E4GPIO1

LTM4677EY

TSNS0BC5TSNS0A

E8

D5

C14

1.8nF

C15

OPT

B

VDD25

E16

ON

RUN0

ASEL

G4

ASEL

VOSNS0-

E9

VOSNS0-

SW1

R27 (OPT)

FREQ_CFG

H4

FSWPHCFG

VOUT0

A1

VOUT0

J7

VOUT0

1

R28 (OPT)

VOUT0A2VOUT0

A3

1.0V / 18A

2

(OPT)

R29

VOUT0_CFG

VTRIM0_CFG

H5

G5

VOUT0CFG

VTRIM0CFG

VOUT0B1VOUT0

VOUT0

B2

B3

100uF

COUT8

1210 1210

100uF

COUT7

1210

COUT6

100uF

2.5V

COUT5

470uF

+

COUT9

470uF

2.5V

+

COUT11

470uF

+

J8

OFF

RUN1

3

6.34K

R30

VOUT1_CFG

G6

VOUT1CFG

VOUT0C2VOUT0

VOUT0

D1

C1

C3

EEFGX0E471R

2.5V

EEFGX0E471R

GND

RUN1

0

R31

VTRIM1_CFG

H6

VTRIM1CFG

VOUT0

D3

D2

R32 0

E17

NC NC NC NC

SGND SGND SGND SGND

GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND

GND0_SNS

K10 H11 E11 C10

F8 F7 G8 G7

M10 M9 M8 M7 M6 M4 L9 L8 L7 L6 L5 L4 K9 K8 K7

R33

0

K4

J10 J4

H10 H3

G12

G11

G10 G3

F10 F3 E3 D7 D4 C9 C8 C7 C6 C4 B9 B8 B7 B6 B5 B4

A10 A9 A8 A7 A6 A4

1. ALL RESISTORS ARE 0603.

ALL CAPACITORS ARE 0603.

NOTE: UNLESS OTHERWISE SPECIFIED

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

*

ON

OFF

SW0

RUN0

1

3

2

R24

10K

R26 (OPT)

VDD25

RUN1

F6

J6

RUN0

RUN1

VDD25

COMP0bD8COMP0a

VOSNS0+

VORB0+

VORB0-

D9

E10

D10

P4

P5

VOSNS0+

R23 OPT

R22

17.8K

C16

OPT

0

R25

E15

VOUT0_SNS

D

HAORAN W.PRODUCTION 51-71-71

VOUT1

1.8V / 18A

J6

DESCRIPTION DATEAPPROVEDECO REV

REVISION HISTORY

__

R3

0

470uF

2.5V

COUT4

+

EEFGX0E471R

VOUT1

COUT3

100uF

COUT2

100uF

COUT1

100uF

1210 1210 1210

COUT10

470uF

2.5V

EEFGX0E471R

+

COUT12

470uF

2.5V

COMP1a

+

EEFGX0E471R

C2

OPT

C1

R2

17.8K

1.8nF

R6

R20 OPT

VOUT1_SNS

E1

C17

VOSNS1

P2

OPT

0805

P1

0.035 VIA

TESTPOINTS

E2

GND

INTVCC

E3

J5

R7 0

OPT

VOUT1

M3

VOUT1

M2

VOUT1

M1

VOUT1

L3

VOUT1

L2

VOUT1

L1

VOUT1

K3

VOUT1

K2

VOUT1

K1

VOUT1

J3

VOUT1

J2

VOUT1

J1

VOSNS1

H9

VORB1

J9

COMP1b

J8

COMP1a

H8

TSNS1A

J5

TSNS1B

K5

ISNS1b+

H1

ISNS1a+

H2

ISNS1b-

G1

ISNS1a-

G2

SNUB1

M5

SW1

L10

VIN1

M12

VIN1

M11

VIN1

L12

VIN1

L11

VIN1

K12

VIN1

K11

VIN1

J12

VIN1

J11

VIN1

H12

A11

VIN

E4

J10

VIN

GND

*

VIN

R8 OPT

VIN0

A12

4.5V - 16V

VIN0

E7

INTVCC

F9

B11

CIN5

CIN4

CIN3

CIN2

CIN1

GND1_SNS

G9

INTVCC

VIN0

B12

C11

10uF

1210 1210 1210 1210

35V

150uF

+

J9

SYNC

VDD33

SHARE_CLK

E8

E6

E9

E10

ALERTB

SYNC

SHARE_CLK

VDD33

R19

10K

R18

10K

R16

10K

R15

10K

R14

10K

R13

10K

R12

10K

R11

10K

R10

10K

J7

VDD33

SVIN

VIN0

SVIN

SW0

VIN0

F12

F11

B10

E12

D11

C12

D12

P3

R9 0

E5

GND

A

Milpitas, CA 95035

1630 McCarthy Blvd.

Milpitas, CA 95035

1630 McCarthy Blvd.

Milpitas, CA 95035

1630 McCarthy Blvd.

APPROVALS

CUSTOMER NOTICE

.VER.ON CI

1

1 3

www.linear.com

Phone: (408)432-1900

Fax: (408)434-0507

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

LTC Confidential-For Customer Use Only

TECHNOLOGY

HZ

PCB DES.

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

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

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

1 3

SHEET OF

1

LTM4677EY

DEMO CIRCUIT 2066A

LTM4677EY

DEMO CIRCUIT 2066A

LTM4677EY

DEMO CIRCUIT 2066A

Friday, July 17, 2015

SCHEMATIC

DUAL STEP-DOWN uMODULE REGULATOR

WITH DIGITAL POWER MANAGEMENT

B

SIZE

DATE:

SIZE

DATE:

SIZE

DATE:

TITLE:

HAORAN W.

SCALE = NONE

APP ENG.

2

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

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

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

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

3

4

5

Figure12. DC2066A Demo Circuit Schematic, Page 1

dc2066af

9

DEMO MANUAL DC2066A

5

4

3

2

1

SCHEMATIC DIAGRAM

C

www.linear.com

Fax: (408)434-0507

Milpitas, CA 95035

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

Milpitas, CA 95035

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

Milpitas, CA 95035

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

Phone: (408)432-1900

TECHNOLOGY

J3

VOUT1

5 4 3 2

VOUT0 VOUT1

1

C22

1uF

R49

2010

OPT

R48

2010

0.5W

C24

1uF

J4

IOSTEP

5

C23

1uF

Q1

SUD50N03-09P

4 2

0

1

4 3 2

1

0.01

R53

R52

10K

2010

GPIO1B

RUN0RUN1

COMP1a

3

HZ

APPROVALS

PCB DES.

.VER.ON CI

1

2 3

1

SHEET OF

DEMO CIRCUIT 2066A

LTM4677EY

2

Friday, July 17, 2015

SCHEMATIC

DUAL STEP-DOWN uMODULE REGULATOR

WITH DIGITAL POWER MANAGEMENT

N/A

DATE:

SIZE

TITLE:

HAORAN W.

SCALE = NONE

APP ENG.

SCALE = NONE

3

C21

DYNAMIC LOAD CIRCUIT

VOUT1

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

VOUT0

D D

1uF

1

2 3 4 5

J2

VOUT0

R51

OPT

R50

2010 2010

E20

IOSTEP_CLK

BLEEDER LOADS

E22

GND

DO NOT EXCEED 5% DUTY CYCLE!

E24

E23

SGND

C

R35 OPT

GPIO0B

OPTIONAL JUMPER FOR DUAL PHASE

SINGLE OUTPUT CONFIGURATION

R38 OPT

R41 OPT

B B

COMP0a

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

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

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

A A

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

Figure13. DC2066A Demo Circuit Schematic, Page 2

4

5

dc2066af

10

SCHEMATIC DIAGRAM

5

4

3

2

1

DEMO MANUAL DC2066A

D

RUN1

RUN0

GPIO1B

GPIO0B

E18

R62

OPT

D1

R61 OPT

OPT

R64

OPT

D2

OPT

R63 0

RUN1

E19

R65 0

R68 OPT

R67

OPT

R66

R83

3V3

C

C28

10nF

R70

10

C27

10nF

R69

10

B

J12, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn. NPPN072FJFN-RC

CTRL2ALERTB

SHARE_CLK5SCL6RESETB7AUXP

UNUSED10GND

8

UNUSED

9

11

12

GND

12V1312V

14

J11 DEMO HEADER (M)

R88

OPT

R89

OPT

R82

OPT

1206

VIN

FAULTB

SDA

3

1

4

0

OPT

A

.VER.ON CI

1

3 3

www.linear.com

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

Fax: (408)434-0507

Milpitas, CA 95035

Fax: (408)434-0507

Milpitas, CA 95035

Fax: (408)434-0507

Milpitas, CA 95035

TECHNOLOGY

SCHEMATIC

DUAL STEP-DOWN uMODULE REGULATOR

TITLE:

HZ

HAORAN W.

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

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

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;

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

SHEET OF

1

DEMO CIRCUIT 2066A

LTM4677EY

Friday, July 17, 2015

B

SIZE

DATE:

SIZE

DATE:

SIZE

DATE:

2

SCALE = NONE

3

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SYNC

SHARE_CLK

9

3

ALERTB

10

GND

4

5

SDA

SHARE_CLK

12

11

AUXSCL

AUXSDA

7

6

SCL

10

8

AUXP

RESETB

UNUSED

C26

TO DC1613A

11

GND

12

14

12V1312V

GND

J12DEMO HEADER (F)

R73

4.99K

R72

4.99K

100nF

AUXVCC

8

VCC

U2

A0

1

EEWP

7

2

PSM STACKING CONNECTORS:

J11, MALE, CONN HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416

Figure14. DC2066A Demo Circuit Schematic, Page 3

R74 OPT

R75 OPT

VDD33

23

Q19

TP0101K

3V3

EESCL

EESDA

5

6

WP

SCL

SDA

A2

VSS

24LC025-I/ST

A1

3

4

OPTIONAL CIRCUIT FOR PROGRAMMING

WITHOUT VIN

R78

15.8k

1

R77 10K

VIN

4

5

1

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

ALERTB SDA SCL

E21

AUXP

3V3

1

AUXP

J1

2

CTRL

FAULTB

8

7

3

6

2

5

4

9

SCL

SDA

GND

GPIO_1

ALERTB

LGKPWR

OUTEN_0

OUTEN_1

dc2066af

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.

11

DEMO MANUAL DC2066A

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 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 application engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

Linear Technology Corporation

12

1630 McCarthy Blvd., Milpitas, CA 95035-7417

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

dc2066af

LT 0915 • PRINTED IN USA

 LINEAR TECHNOLOGY CORPORATION 2015