Linear ANALOG DEVICES DC2448A-A Guide de configuration rapide

dc2448aaf

DEMO MANUAL

DC2448A-A

Description

LTM4636

High Efficiency, PolyPhase 80A

Step-Down Power µModule Regulator

Demonstration circuit DC2448A-A features a PolyPhase

design using the LTM

4636EY, a 40A high efficiency,

switch mode step-down power µModule

regulator. The

input voltage range is from 4.7V to 15V. When VIN < 5.5V,

short PVCC to VIN with R1 = 0Ω, and set R3 = 0Ω and

remove R2. The output voltage range is 0.6V to 3.3V. The

DC2448A-A can deliver a nominal 80A output current. As

explained in the data sheet, output current derating is nec-

essary for certain VIN, VOUT, and thermal conditions. The

board operates in continuous conduction mode in heavy

load conditions. For high efficiency at low load currents,

the MODE_PLLIN jumper selects pulse-skipping mode for

L, LT, LTC, LTM, Linear Technology, Burst Mode, µModule, PolyPhase and the Linear logo

are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their

respective owners.

BoarD photo

noise sensitive applications or Burst Mode

operation in

less noise sensitive applications. The MODE_PLLIN pin

also allows the LTM4636 to synchronize to an external

clock signal. The phase shift between the two phases is

180 degree. DC2448A-A has the option of choosing both

internal and external compensation circuit for LTM4636.

The LTM4636 data sheet must be read in conjunction with

this demo manual prior to working on or modifying demo

circuit DC2448A-A.

Design files for this circuit board are available at

http://www.linear.com/demo/DC2448A-A

dc2448aaf

DEMO MANUAL

DC2448A-A

Quick start proceDure

Demonstration circuit DC2448A-A is an easy way to

evaluate the performance of PolyPhase operation of the

LTM4636EY. Due to the high input/output current, the

user should select the proper input supply/load/cable

which can sustain the full load operation. Please refer to

Figure 1 for proper measurement equipment setup and

follow the procedure below:

1. Place jumpers in the following positions for a typical

application:

MODE RUN

CCM ON

2. With power off, connect the input power supply, load

and meters as shown in Figure 1. Preset the load to 0A

and VIN supply to 12V.

3. Turn on the power supply at the input. The output volt-

age should be 0.9V ± 1.3% (0.888V to 0.912V).

4. Vary the input voltage from 6V to 15V and adjust

the load current from 0A to 80A. Observe the output

voltage regulation, ripple voltage, efﬁciency and other

parameters.

5. (Optional) For optional load transient test, apply an

adjustable pulse signal between IOSTEP_CLK and GND

test points. The pulse amplitude sets the load step cur-

rent amplitude. Keep the pulse width short (<1ms) and

pulse duty cycle low (<5%) to limit the thermal stress

on the load transient circuit.

6. (Optional) LTM4636 can be synchronized to an external

clock signal. Apply a clock signal (0V to 5V, square

wave) on the MODE_PLLIN test point.

7. (Optional) The outputs of LTM4636 can track another

supply. The output voltage tracks the voltage on TRACK

when a valid signal is applied on the test point.

performance summary

Specifications are at TA= 25°C

PARAMETER CONDITIONS VALUE

Input Voltage Range 4.7V to 15V

Output Voltages 0.9V ±1.3%

Maximum Continuous Output Current Derating is necessary for certain operating conditions. See data sheet for details. 80ADC

Operating Frequency 350kHz

Efficiency VIN = 12V, VOUT = 0.9V, IOUT = 80A 87.0% Figure 2

Load Transient VOUT(P-P) VIN = 12V, VOUT = 0.9V, ISTEP = 0A TO 20A 109mV Figure 3

dc2448aaf

DEMO MANUAL

DC2448A-A

Quick start proceDure

Figure 1. Measurement Setup of DC2448A-A

DC2448AA F01

LOAD

+–

–

VIN

–

+–

dc2448aaf

DEMO MANUAL

DC2448A-A

Quick start proceDure

Figure 2. Measured Efficiency at VIN = 12V, fSW=350kHz, CCM

Figure 3. Measured Load Transient

VIN = 12V, VOUT=0.9V, ISTEP=0Ato20A

OUTPUT CURRENT (A)

EFFICIENCY (%)

DC2448AA F02

0 80.070.060.050.040.030.020.010.0

0.9VOUT

1.0VOUT

1.2VOUT

1.5VOUT

1.8VOUT

50µs/DIV

VOUT

50mV/DIV

IOUT_STEP

20A/DIV

DC2448AA F03

dc2448aaf

DEMO MANUAL

DC2448A-A

Quick start proceDure

Figure 4. Thermal Capture at VIN = 12V, VOUT=0.9V, 80A (TA=25°C, 200LFM Airflow and No Heat Sink)

dc2448aaf

DEMO MANUAL

DC2448A-A

parts List

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 2 C1, C14 CAP., 22µF, X7R, 10V, 10%, 1206 MURATA, GRM31CR71A226KE15L

2 2 C2, C15 CAP., 4.7µF, X5R, 25V, 20%, 0805 MURATA, GRM21BR61E475MA12L

3 1 C8 CAP., 100pF, X7R, 50V, 10%, 0603 AVX, 06035C101KAT2A

4 2 C9, C10 CAP., 0.47µF, X7R, 10V, 10%, 0603 AVX, 0603ZC474KAT2A

MURATA, GRM188R71A474KA61D

5 2 C29, C30 CAP

., 10µF, X5R, 6.3V, 10%, 0805 MURATA, GRM21BR60J106KE19L

6 11 C31, C32, CO1, CO2, CO3, CO4, CO7,

CO8, CO9, CO10, CO11

CAP., 100µF, X5R, 6.3V, 20%, 1210 MURATA, GRM32ER60J107ME20L

7 1 CIN1 CAP., 150µF, ALUM., 35V, 20%, 10x10.5mm, SMD,

HVH Series

SUN ELECTRONIC INDUSTRIES CORP,

35HVH150M

8 8 CIN2, CIN3, CIN4, CIN5, CIN6, CIN7,

CIN8, CIN9

CAP., 22µF, X5R, 25V, 10%, 1210 AVX, 12103D226KAT2A

MURATA, GRM32ER61E226KE15L

9 4 CO5, CO6, CO12, CO13 CAP., 470µF, TANT. POLY., 4V, 20%, 7343, D3L PANASONIC, 4TPE470MCL

10 1 R14 RES., 10k, 1%, 1/10W, 0603 KOA SPEER, RK73H1JTTD1002F

PANASONIC, ERJ3EKF1002V

VISHAY, CRCW060310K0FKEA

11 1 R20 RES., 4.99k, 1%, 1/10W, 0603 NIC, NRC06F4991TRF

VISHAY, CRCW06034K99FKEA

12 2 R22, R51 RES., 34.8k, 1%, 1/10W, 0603 VISHAY, CRCW060334K8FKEA

YAGEO, RC0603FR-0734K8L

13 2 U1, U2 IC, HIGH EFFICIENCY 40A µMODULE LINEAR TECHNOLOGY, LTM4636EY#PBF

Additional Demo Board Circuit Components

1 2 C6, C17 CAP., 2200pF, X7R, 50V, 10%, 0603 AVX, 06035C222KAT2A

2 1 C33 CAP., 1µF, X7R, 16V, 10%, 0603 AVX, 0603YC105KAT2A

NIC, NMC0603X7R105K16TRPF

TDK, C1608X7R1C105K080AC

3 1 Q3 XSTR., MOSFET

, N-CH, 40V, TO-252 VISHAY, SUD50N04-8M8P-4GE3

4 5 R2, R16, R19, R45, R50 RES., 0Ω, 1/10W, 0603 NIC, NRC06ZOTRF

VISHAY, CRCW06030000Z0EA

5 4 R4, R5, R12, R15 RES., 10k, 5%, 1/10W, 0603, AEC-Q200 PANASONIC, ERJ3GEYJ103V

VISHAY, CRCW060310K0JNEA

6 1 R7 RES., 0.01Ω, 1%, 1W, 2010, HIGH POWER VISHAY, WSL2010R0100FEA18

7 2 R8, R9 RES., 51Ω, 5%, 1/10W, 0603 VISHAY, CRCW060351R0JNEA

8 2 R18, R49 RES., 2.2Ω, 5%, 1/8W, 0805, AEC-Q200 VISHAY, CRCW08052R20JNEA

9 4 R24, R26, R32, R37 RES., 0Ω, 3/4W, 2010, AEC-Q200 VISHAY, CRCW20100000Z0EF

10 1 R25 RES., 0Ω, 1W, 2512, SENSE VISHAY, WSL251200000ZEA9

11 1 R76 RES., 0Ω, 1W, 2010, SENSE, AEC-Q200 VISHAY, WSL201000000ZEA9

dc2448aaf

DEMO MANUAL

DC2448A-A

parts List

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Hardware: For Demo Board Only

1 27 E1, E2, E3, E5, E6, E9, E10, E11, E12,

E13, E14, E15, E17, E18, E19, E24,

E25, E27, E30, E31, E32, E34, E37,

E38, E39, E43, E44

TEST POINT, TURRET, 0.064", MTG. HOLE MILL-MAX, 2308-2-00-80-00-00-07-0

2 2 E7, E8 TEST POINT, TURRET, 0.094", MTG. HOLE MILL-MAX, 2501-2-00-80-00-00-07-0

3 6 J1, J2, J5, J6, J7, J8 WASHER, FLAT, STEEL, ZINC PLATE,

OD: 0.436 [11.1]

KEYSTONE, 4703

4 6 J1, J2, J5, J6, J7, J8 RING, LUG, CRIMP

, #10, NON-INSULATED,

SOLDERLESS TERMINALS

KEYSTONE, 8205

5 6 J1, J2, J5, J6, J7, J8 STUD, FASTENER, #10-32 PENNENGINEERING, KFH-032-10ET

6 6 J1, J2, J5, J6, J7, J8 NUT, HEX, STEEL, ZINC PLATE, 10-32 KEYSTONE, 4705

7 2 J3, J4 CONN., SMA RF COAX, PCB JACK RCPT, THT, STR MOLEX, 73391-0060

8 1 JP1 CONN., HDR., MALE, 1x4, 2mm, THT, STR SAMTEC, TMM-104-02-L-S

9 1 JP2 CONN., HDR., MALE, 1x3, 2mm, THT, STR SAMTEC, TMM-103-02-L-S

10 4 MH1, MH2, MH3, MH4 STANDOFF, NYLON, SNAP-ON, 0.250" KEYSTONE, 8831

WURTH ELEKTRONIK, 702931000

11 2 XJP1, XJP2 CONN., SHUNT

, FEMALE, 2 POS, 2mm SAMTEC, 2SN-BK-G

dc2448aaf

DEMO MANUAL

DC2448A-A

schematic Diagram

NOTE:UNLESSOTHERWISESPECIFIED,

1.ALLCAPACITORS,RESISTORS0603. SEELTM4636/LTM4636‐1DATASHEET

U1,U2,U3,ANDU4ARECONNECTEDINPARALLELTODEVELOP160AMPDESIGN.

WHENVIN<5.5V,SHORTPVCCTOVINWITHR1=0OHM,ANDSETR3=0OHMANDREMOVER2.

R11=100KFOROVPTRIPOF1V

CONNECTVOUT(0.9V)TOLOADSTEPGENERATORTHROUGHR24,R26,R32,R37FORTRANSIENTTESTING

R19ISSETTO0OHMFORONBOARDCOMPENSATION,ORUNSTUFFR19FOREXTERNALOPTIMIZEDCOMPENSATION.

R11CANBECHANGEDTOTHEDESIREDRESISTORVALUEFORSETTINGTHEOVP.

ORR11CANBESTUFFEDWITH0OHMRESISTORTODISABLEOVP.

U1,U2,U3,U4,TMONPINSCANBEGROUNDEDTODISABLEOVERTEMPPROTECTIONFOREACHSPECIFICDEVICE.

ASSY IC

-A

-B

-C

U1,U2

U1,U2,U3

U1,U2 U3,U4

IOUT

80A

120A

160A

R17

OPT

R16

OPT

R56

OPT

R65

OPT

CIN10-CIN13

OPT

22uF

CIN14-CIN17

OPT

22uF

CO19,CO20

OPT

470uF

CO26,CO27

OPT

470uF

OPT

CO14-CO18

100uF

CO21-CO25

OPT

100uF

[2]ASSEMBLYOPTIONS.

[2]

OPT

-D U1,U2 U3,U4 160A 0 0 22uF 22uF 470uF 470uF 100uF 100uF0OPT

R71,R73,R74,R75

66.5K 1%

R11

100K 1% 0.001 1%

R25

OPT

R76

OPT

R47

OPT

PGOOD

COMP

CLKOUT_U1

RUN

TRACK/SS

VFB

HIZREG

OVP_TRIP

OVER_TEMP

GND_SNS

CROWBAR

VIN_HS

INTVCC_U1

VOUT

INTVCC_U1

VIN_HS VIN_HS

BIAS

INTVCC_U1

SIZE

DATE:

IC NO. REV.

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

DEMO CIRCUIT 2448A

Friday, March 10, 2017

FOUR PHASE, STEP-DOWN MODULE

N/A

LTM4636EY/LTM4636EY-1

` \

l _

REGULATOR WITH HOTSWAP INPUT

SIZE

DATE:

IC NO. REV.

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

DEMO CIRCUIT 2448A

Friday, March 10, 2017

FOUR PHASE, STEP-DOWN MODULE

N/A

LTM4636EY/LTM4636EY-1

` \

l _

REGULATOR WITH HOTSWAP INPUT

SIZE

DATE:

IC NO. REV.

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

DEMO CIRCUIT 2448A

Friday, March 10, 2017

FOUR PHASE, STEP-DOWN MODULE

N/A

LTM4636EY/LTM4636EY-1

` \

l _

REGULATOR WITH HOTSWAP INPUT

REVISION HISTORY

DESCRIPTION DATE APPROVEDECO REV

l _

PROD

-403/08/17

REVISION HISTORY

DESCRIPTION DATE APPROVEDECO REV

l _

PROD

-403/08/17

REVISION HISTORY

DESCRIPTION DATE APPROVEDECO REV

l _

PROD

-403/08/17

CO5

470uF

7343

E44

BIAS

OPT

VOUT

2200pF

CIN5

22uF

25V

1210

R71 [2]

PWM1

100pF

VOUT

R11 [2]

JP1

CCM

MODE

R18 2.2

0805

R22

34.8k 1%

0805

4.7uF

E10

CROWBAR

CO1

100uF

6.3V

1210

E1 TEMP+_U1

CIN1

150uF

35V

R15

10K

CIN3

22uF

25V

1210

E14

OVP_TRIP

HIZREG

OPT

E16

SW1

GND

J2 GND

R17

[2]

OPT

22uF

1206

R20

4.99k

CIN2

22uF

25V

1210

CO6

470uF

7343

E19

TMON_U1

J7 GND

0.9V/160A

VOUT

R12

10K

E15

GND_SNS

OPT

CIN4

22uF

25V

1210

CLKOUT_U1

CO4

100uF

6.3V

1210

R21

OPT

E13

OVER_TEMP

10K

E18

RUN

JP2

OFF

RUN

0.47uF

R14

10k

R16 [2]

E11

VOUT_SNS

C10

0.47uF

R19

LTM4636EY/LTM4636EY-1

GMON

SNSP1

TEST3

HIZREG

PGOOD

L11

RUNP

CLKOUT

SNSP2

TEST2

RUNC

TRACK/SS

VFB

TEST4/CROWBAR

E11

GND

M10

GND/OVP_SET

E12

COMPB

COMPA

NC/BIAS

PHASEMD

TEMP+

G12

TEMP-

G11

GND

M12

VOSNS1

VOSNS-

GND/OVP_TRIP

E10

INTVCC

MODE_PLLIN

PWM

PVcc

GND/OVER_TEMP

D10

TEST1

GND

FREQ

GND

TMON

GND

M11

SGND

K11

VOUT

A10

VOUT

A11

VOUT

A12

VOUT

B10

VOUT

B11

VOUT

B12

VOUT

C10

VOUT

C11

VOUT

C12

VOUT

D11

VOUT

D12

GND

F10

GND/OTP_SET

F11

GND

F12

GND

G10

GND

H10

GND

H11

GND

H12

GND

J10

GND

J11

GND

J12

GND

K10

GND

K12

GND

L10

GND

L12

VIN

VIN_HS

E12

PGOOD

E3 TEMP-_U1

CO3

100uF

6.3V

1210

C33 1uF

CO2

100uF

6.3V

1210

E17

MODE_PLLIN

R72 OPT

R13 OPT

OPT

PVcc

PGOOD

RUN

dc2448aaf

DEMO MANUAL

DC2448A-A

schematic Diagram

WHENVIN<5.5V,SHORTPVCCTOVINWITHR44=0OHM,ANDSETR43=0OHMANDREMOVER45.

R50CANBESETTO0OHMFORONBOARDCOMPENSATION,ORUNSTUFFEDFOREXTERNALOPTIMIZEDCOMPENSATION.



COMP

CLKOUT_U2

RUN

PGOOD

VFB

HIZREG

OVER_TEMP

CLKOUT_U1

GND_SNS

TRACK/SS

VOUT

VIN_HS

VIN_HS VIN_HS

BIAS

SIZE

DATE:

IC NO. REV.

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

DEMO CIRCUIT 2448A

Friday, March 10, 2017

FOUR PHASE, STEP-DOWN MODULE

N/A

LTM4636EY/LTM4636EY-1

` \

l _

REGULATOR WITH HOTSWAP INPUT

SIZE

DATE:

IC NO. REV.

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

DEMO CIRCUIT 2448A

Friday, March 10, 2017

FOUR PHASE, STEP-DOWN MODULE

N/A

LTM4636EY/LTM4636EY-1

` \

l _

REGULATOR WITH HOTSWAP INPUT

SIZE

DATE:

IC NO. REV.

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

DEMO CIRCUIT 2448A

Friday, March 10, 2017

FOUR PHASE, STEP-DOWN MODULE

N/A

LTM4636EY/LTM4636EY-1

` \

l _

REGULATOR WITH HOTSWAP INPUT

CIN8

22uF

25V

1210

C17

2200pF

CO10

100uF

6.3V

1210

R48

OPT

E30

TMON_U2

R47

[2]

C14

22uF

1206

E26

PWM2

E24

TEMP-_U2

R45

R73 [2]

CO9

100uF

6.3V

1210

R44

OPT

C16

OPT

CIN9

22uF

25V

1210

R50

E28

SW2

CIN7

22uF

25V

1210

R49 2.2

0805

LTM4636EY/LTM4636EY-1

GMON

SNSP1

TEST3

HIZREG

PGOOD

L11

RUNP

CLKOUT

SNSP2

TEST2

RUNC

TRACK/SS

VFB

TEST4/CROWBAR

E11

GND

M10

GND/OVP_SET

E12

COMPB

COMPA

NC/BIAS

PHASEMD

TEMP+

G12

TEMP-

G11

GND

M12

VOSNS1

VOSNS-

GND/OVP_TRIP

E10

INTVCC

MODE_PLLIN

PWM

PVcc

GND/OVER_TEMP

D10

TEST1

GND

FREQ

GND

TMON

GND

M11

SGND

K11

VOUT

A10

VOUT

A11

VOUT

A12

VOUT

B10

VOUT

B11

VOUT

B12

VOUT

C10

VOUT

C11

VOUT

C12

VOUT

D11

VOUT

D12

GND

F10

GND/OTP_SET

F11

GND

F12

GND

G10

GND

H10

GND

H11

GND

H12

GND

J10

GND

J11

GND

J12

GND

K10

GND

K12

GND

L10

GND

L12

VIN

CO8

100uF

6.3V

1210

C18

OPT

CO7

100uF

6.3V

1210

R51

34.8k

CIN6

22uF

25V

1210

CO11

100uF

6.3V

1210

E25

TEMP+_U2

CO12

470uF

7343

E27

CLKOUT_U2

R43

OPT

CO13

470uF

7343

E29

TRACK/SS

C15

0805

4.7uF

PVcc

dc2448aaf

DEMO MANUAL

DC2448A-A

schematic Diagram

WHENVIN<5.5V,SHORTPVCCTOVINWITHR52=0OHM,ANDSETR53=0OHMANDREMOVER54.

R59CANBESETTO0OHMFORONBOARDCOMPENSATION,ORUNSTUFFEDFOREXTERNALOPTIMIZEDCOMPENSATION.



VFB

HIZREG

OVER_TEMP

CLKOUT_U2

COMP

CLKOUT_U3

RUN

PGOOD

GND_SNS

TRACK/SS

VOUT

VIN_HS

VIN_HS VIN_HS

BIAS

SIZE

DATE:

IC NO. REV.

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

DEMO CIRCUIT 2448A

Friday, March 10, 2017

FOUR PHASE, STEP-DOWN MODULE

N/A

LTM4636EY/LTM4636EY-1

` \

l _

REGULATOR WITH HOTSWAP INPUT

SIZE

DATE:

IC NO. REV.

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

DEMO CIRCUIT 2448A

Friday, March 10, 2017

FOUR PHASE, STEP-DOWN MODULE

N/A

LTM4636EY/LTM4636EY-1

` \

l _

REGULATOR WITH HOTSWAP INPUT

SIZE

DATE:

IC NO. REV.

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

DEMO CIRCUIT 2448A

Friday, March 10, 2017

FOUR PHASE, STEP-DOWN MODULE

N/A

LTM4636EY/LTM4636EY-1

` \

l _

REGULATOR WITH HOTSWAP INPUT

E37

TMON_U3

CO19

[2]

7343

E33

PWM3

R54

R58 2.2

0805

R56

[2]

LTM4636EY/LTM4636EY-1

GMON

SNSP1

TEST3

HIZREG

PGOOD

L11

RUNP

CLKOUT

SNSP2

TEST2

RUNC

TRACK/SS

VFB

TEST4/CROWBAR

E11

GND

M10

GND/OVP_SET

E12

COMPB

COMPA

NC/BIAS

PHASEMD

TEMP+

G12

TEMP-

G11

GND

M12

VOSNS1

VOSNS-

GND/OVP_TRIP

E10

INTVCC

MODE_PLLIN

PWM

PVcc

GND/OVER_TEMP

D10

TEST1

GND

FREQ

GND

TMON

GND

M11

SGND

K11

VOUT

A10

VOUT

A11

VOUT

A12

VOUT

B10

VOUT

B11

VOUT

B12

VOUT

C10

VOUT

C11

VOUT

C12

VOUT

D11

VOUT

D12

GND

F10

GND/OTP_SET

F11

GND

F12

GND

G10

GND

H10

GND

H11

GND

H12

GND

J10

GND

J11

GND

J12

GND

K10

GND

K12

GND

L10

GND

L12

VIN

CO16

[2]

6.3V

1210

E32

TEMP+_U3

C21

OPT

CIN10

[2]

25V

1210

C22

2200pF

R60

34.8k

R57

OPT

CIN12

[2]

25V

1210

E35

SW3

E34

CLKOUT_U3

CO20

[2]

7343

E31

TEMP-_U3

CO15

[2]

6.3V

1210

R52

OPT

C19

22uF

1206

R59

CIN13

[2]

25V

1210

C20

0805

4.7uF

R74 [2]

C23

OPT

R53

OPT

CO17

[2]

6.3V

1210

CO18

[2]

6.3V

1210

CO14

[2]

6.3V

1210

CIN11

[2]

25V

1210

PVcc

Ce manuel convient aux modèles suivants

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