Linear Technology DC2453A, LTM4643EV Demo Manual

Page 1
Description
DEMO MANUAL DC2453A
LTM4643EV
Quad DC/DC µModule Regulator
with Configurable 3A Output Array
Demonstration circuit 2453A features the LTM®4643
µModule 4 output step-down regulator. The LTM4643EV has an operating input voltage range of 4V to 20V and is able to provide up to 3A out output current from each of its phases. Each output’s voltage is programmable from 0.6V to 3.3V. The LTM4643EV is a complete DC/DC point of load regulator in a thermally enhanced 15mm × 9mm×1.82mm LGA package requiring only a few input and output ca pacitors. Output voltage tracking is available through the
regulator, a high performance high efficiency
-
BoarD photo
TRACK/SS pin for supply rail sequencing. External clock synchronization is also available through the CLKIN pin. The CLKOUT pin provides for synchronization of additional modules’ phases. The LTM4643 data sheet must be read in conjunction with this demo manual for working on or modifying demo circuit 2453A.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2453A
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.
Figure 1. Quad 3A LTM4643; DC2453A
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DEMO MANUAL DC2453A
performance summary
PARAMETER CONDITIONS/NOTES VALUE
Input Voltage Range 4V – 20V
Output Voltage V
Maximum Continuous Output Current per Phase Derating is Necessary for Certain Operating
Default Operating Frequency 1.2MHz
Efficiency V
OUT
Jumper Selectable V
Conditions. See Data Sheet for Details
= 12V, V
IN
OUT1
= 3.3V, I
= 3A 89% See Figure 2
OUT
= 3.3VDC, V
OUT1
1.5VDC, V
3ADC
Quick start proceDure
OUT4
OUT2
= 1.2VDC
= 2.5VDC, V
OUT3
=
Demonstration circuit 2453A is an easy way to evaluate the performance of the LTM4643EV. Please refer to Figure 1 for test setup connections and follow the procedure below.
1. With power off, place the jumpers in the following positions:
JP1 JP2 JP3 JP2
RUN1 RUN2 RUN3 RUN4
ON ON ON ON
JP8 JP7 JP6 JP5
MODE1 MODE2 MODE3 MODE4
CCM CCM CCM CCM
2. Before connecting input supply, loads and meters, preset the input voltage supply to be between 4V to 20V. Preset the load currents to 0A.
3. With power off, connect the loads, input voltage supply and meters as shown in Figure 1.
4. Turn on input power supply. The output voltage meters for each phase should display the programmed output voltage ±2%.
5. Once the proper output voltage is established, adjust the load currents for each phase within the 0A to 3A range and observe the load regulation, efficiency, and other parameters. Output voltage ripple should be measured at J6 with a BNC cable and oscilloscope.
6. To observe increased light load efficiency place, a Mode pin jumper (JP5-JP8) in the DCM Mode position.
2
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Quick start proceDure
DEMO MANUAL DC2453A
Figure 2. Test Setup of DC2453A
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DEMO MANUAL DC2453A
OUTPUT CURRENT (A)
0
0.511.522.5
3
65
70
75
80
85
90
95
100
EFFICIENCY (%)
dc2453a F02a
3.3V
OUT1
2.5V
OUT2
1.5V
OUT3
1.2V
OUT4
OUTPUT CURRENT (A)
0
0.511.522.5
3
65
70
75
80
85
90
95
100
dc2453a F02b
3.3V
OUT1
2.5V
OUT2
1.5V
OUT3
1.2V
OUT4
Quick start proceDure
V
OUT1
100mV/DIV
_STEP
I
OUT1
1A/DIV
Figure 2. Measured Supply Efficiency at 5VIN and 12V
VIN (V) V
12 3.3 2 × 47μF/6.3V/Ceramic
Figure 3. Measured V
(V) C
OUT
CERAMIC
OUT
= 3.3V and V
OUT1
IN
V
OUT1
100mV/DIV
_STEP
I
OUT1
1A/DIV
VIN (V) V
(V) C
OUT
12 1.2 2 × 47μF/6.3V/Ceramic
= 1.2V Load Transient Responses (1.5A to 3A Load Step)
OUT4
CERAMIC
OUT
4
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Quick start proceDure
V
(V) AIRFLOW AMBIENT (°C)
IN
5 Natural Convection 28
DEMO MANUAL DC2453A
Figure 4. Measured Thermal Capture with All Phases at Full Load (3A)
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DEMO MANUAL DC2453A
parts List
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 2 C1, C3 CAP, CER, 22μF, 25V, X5R, 20%, 1206 MURATA, GRM31CR61E226ME15L
2 1 C6 CAP, X5R, 1μF, 16V 10%, 0603 AVX, 0603YD105KAT2A
3 4 C9, C17 ,C28, C36 CAP, CER, 47μF, 6.3V, X5R, 20%,1210 AVX, 12106D476MAT2A
4 4 C10, C16, C29, C35 CAP, CER, 47μF, 6.3V, X5R, 20%, 1206 TAIYO YUDEN, JMK316ABJ476MLHT
5 4 C25, C26, C45, C46 CAP, CER, 0.10μF, 50V, X7R, 10%, 0603 TDK, C1608X7R1H104K
6 1 R1 RES, 10k, 1%, 1/10W, 0603 VISHAY, CRCW060310K0FKED
7 1 R2 RES, 1Ω, 5%, 1/10W, 0603 VISHAY,CRCW06031R00JNEA
8 1 R3 RES, 13.3k, 1%, 1/10W, 0603 VISHAY CRCW060313K3FKEA
9 1 R4 RES, 40.2k, 1%, 1/10W, 0603 VISHAY CRCW060340K2FKEA
10 1 R11 RES, 19.1k, 1%, 1/10W, 0603 VISHAY CRCW060319K1FKEA
11 1 R12 RES, 60.4k, 1%, 1/10W, 0603 VISHAY CRCW060360K4FKEA
12 1 R28 RES, 0805, 0Ω 5% 1/16W VISHAY, CRCW08050000Z0EA
13 1 U1 LTM4643EV, BGA-15X9-5.01 LINEAR TECH. CORP. LTM4643EV#PBF
Additional Demo Board Circuit Components
1 2 C4, C5 CAP, CER, 22μF, 25V, X5R, 20%, 1206 MURATA, GRM31CR61E226ME15L
2 1 C2 CAP, POSCAP, 33μF, 25V, 7343 PANASONIC, 25TQC33MYF
3 6 C7, C21, C22, C31, C41, C42 CAP, 0603 OPTION
4 4 C8, C18, C27, C37 CAP, POSCAP, 7343 OPTION
5 8 C11, C12, C14, C15, C30, C33, C34, C38 CAP, CER, 1206 OPTION
6 2 C13, C32 CAP, CER, 100pF, 25V, X7R, 10%, 0603 AVX 06033C101KAT2A
7 4 R7, R8, R15, R16 RES, 0Ω, 1%, 1/10W, 0603 VISHAY, CRCW06030000Z0ED
8 4 R19, R20, R21, R22 RES, 150k, 5%, 1/10W, 0603 VISHAY CRCW0603150KJNEA
9 8 R23, R24, R25, R26, R27, R29, R30, R31 RES, 100k, 5%, 1/10W, 0603 VISHAY CRCW0603100KJNEA
10 16 R9, R10, R17, R18, R32-R35, R37-R40,
11 3 R36, R41, R46 RES, 0 OHM, 2512,OPT OPT
Hardware
1 16 E1, E3-E17 TESTPOINT, TURRET 0.094" MILL MAX 2501-2-00-80-00-00-07-0
2 2 J1, J2 JACK, BANANA KEYSTONE 575-4
3 8 JP1-JP8 HEADER, 0.079" SINGLE ROW, 3-PIN SULLINS, NRPN031PAEN-RC
4 8 XJP1-XJP8 SHUNT, 0.079" CENTER SAMTEC, 2SN-BK-G
5 4
R42-R45
STAND-OFFS STAND-OFF
RES, 0603,OPT OPT
, NYLON 0.375" TALL (SNAP ON) KEYSTONE, 8832
6
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schematic Diagram
5
4
3
2
1
D
C
B
A
DEMO MANUAL DC2453A
D
07-29-15
07-29-15
07-29-15
GND
VIN
VIN+
SAM Y.
SAM Y.
SAM Y.
4V - 20V
J2
J1
E12
PRODUCTION
PRODUCTION
PRODUCTION
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
VIN
1
1
1
_
_
_
25V
7343
33uF
C2
+
1206
C5
25V
22uF
1206
C4
25V
22uF
1206
C3
25V
22uF
C1
25V
22uF
1206
1uF
C6
R2
1
R1
10K
CLKOUT
TP5
E3
E1
TEMP
CLKIN
VOUT3
GND
E13
GND
1.5V / 3A MAX E15
E14
C18
OPT
7343
+
C17
47uF
6.3V
1210
VOUT3
C16
47uF
6.3V
1206
C15
OPT
1206
C14
OPT
1206
R4
C13
100pF
40.2K
C22
OPT
COMP3
FB3
H7
F1
G2
G7
FB3
VOUT3
VOUT3G1VOUT3
SVIN1
SVIN2
SVIN3
SVIN4
TEMP
CLKIN
VOUT1
C10
C9
CLKOUT
VOUT1A2VOUT1
A3
+
C8
FB1
OPT
C7
C12
OPT
1206
C11
1206
OPT
6.3V
1206
47uF
6.3V
1210
47uF
OPT
7343
3.3V / 3A MAX
COMP3
FB1A7COMP1
B7
COMP1
C21
OPT
R3
13.3K
E9
GND
VIN1
B4
VIN1
B3
VIN2
E4
VIN2
E3
VIN4
L4
VIN4
L3
VIN3
H4
VIN3
H3
B5
E5
H5
L5
F3
J3
C7
A1
VOUT1
E8
VOUT1
R8
R7
E4
E6
INTVCC3
J4
INTVCC3
INTVCC1
C4
INTVCC1
TRACK1 TRACK3
C
VOUT4
GND
TRACK4
1.2V / 3A MAX
E16
7343
C37
OPT
R10
0.1uF
SS3
G6
OPT
TRACK/SS3
+
C36
47uF
6.3V
VOUT4
C35
47uF
6.3V
C34
OPT
1206
C33
OPT
1206
C32
100pF
J1
K1
J7
VOUT4
VOUT4K2VOUT4
0
C26
E7
E17
1210
1206
R12
FB4
0
R16
R18
OPT
60.4K
C42
C46
OPT
COMP4
L7
COMP4
INTVCC4
K5
INTVCC4
0.1uF
SS4
K6
TRACK/SS4
B6
U1
LTM4643EV
VOUT2
TRACK/SS1
A6
SS1
C25
0.1uF
R9
OPT
0
FB2D7COMP2
VOUT2D2VOUT2
C1
D1
FB2 FB4
C31
OPT
C38
OPT
1206
C30
OPT
1206
C29
1206
6.3V
47uF
VOUT2
C28
6.3V
1210
47uF
+
C27
OPT
7343
E11
E10
2.5V / 3A MAX
VOUT2
GND
INTVCC2
TRACK/SS2
F4
E7
COMP2
C41
OPT
R11
19.1K
INTVCC2
R15
E5
TRACK2
C6
D6
SS2
RUN1
C45
0.1uF
R17
OPT
0
MODE1
RUN1
B
123
CCM
DCM
JP8
MODE1
123
CCM
DCM
JP7
MODE2
123
JP6
CCM
DCM
MODE3
123
CCM
DCM
JP5
MODE4
E6
L6
H6
MODE2
MODE4
MODE3
GND
J5
GND
G5
GND
F5
GND
D5
GND
C5
GND
A5
GND
A4
GND
D4
GND
G4
GND
K4
GND
D3
GND
G3
GND
K3
GND
B2
GND
E2
GND
H2
GND
L2
GND
B1
GND
E1
GND
H1
GND
L1
R2800805
SGND
F7
PGOOD4
J2
PGOOD3
F2
PGOOD2
C2
PGOOD1
C3
RUN2
RUN4
RUN3
J6
F6
K7
INTVCC1
INTVCC2
INTVCC3
INTVCC4
RUN4
JP4
123
ON
JP3
123
ON
JP2
123
ON
RUN1 RUN2 RUN3 RUN4 INTVCC4 INTVCC3 INTVCC1INTVCC2
JP1
123
ON
RUN1 RUN2 RUN3 RUN4
R27
R26
OFF
R25
OFF
R24
OFF
R23
OFF
RUN2
RUN3
R22
150K
R21
150K
R20
150K
R19
150K
VIN
R30
R31
R29
100K
100K
100K
100K
TP2
TP1
TP3
TP4
PGOOD2
PGOOD1
PGOOD3
100K
1%
100K
1%
100K
1%
100K
1%
PGOOD4
A
www.linear.com
www.linear.com
www.linear.com
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
APPROVALS
APPROVALS
APPROVALS
CUSTOMER NOTICE
CUSTOMER NOTICE
CUSTOMER NOTICE
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;
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
VOUT2
OPT2512
R36
VOUT1
RUN2
R35
OPT
RUN1
SS2
R34
OPT
SS1
COMP2
PARALLEL OPERATION
OPTIONAL JUMPERS FOR
R33
OPT
COMP1
FB2
R32
OPT
FB1
1
1
1
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
m
LTM4643EV
LTM4643EV
LTM4643EV
DEMO CIRCUIT 2453A
DEMO CIRCUIT 2453A
DEMO CIRCUIT 2453A
TECHNOLOGY
TECHNOLOGY
TECHNOLOGY
IC NO. REV.
IC NO. REV.
IC NO. REV.
SCHEMATIC
SCHEMATIC
SCHEMATIC
QUAD 3A STEP-DOWN MODULE REGULATOR
QUAD 3A STEP-DOWN MODULE REGULATOR
QUAD 3A STEP-DOWN MODULE REGULATOR
N/A
N/A
N/A
SIZE
SIZE
SIZE
TITLE:
TITLE:
TITLE:
LT
LT
LT
SAM Y.
SAM Y.
SAM Y.
PCB DES.
PCB DES.
PCB DES.
APP ENG.
APP ENG.
APP ENG.
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.
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
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
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
OPT2512
OPT2512
R46
R41
VOUT2 VOUT3
VOUT3 VOUT4
R45
R40
OPT
OPT
RUN2 RUN3
RUN3 RUN4
R39
R44
OPT
OPT
SS2 SS3
SS3 SS4
R38
R43
OPT
OPT
COMP3 COMP4
R37
R42
OPT
OPT
FB3 FB4
FB2 FB3 COMP2 COMP3
1. ALL RESISTORS AND CAPACITORS ARE 0603.
NOTE: UNLESS OTHERWISE SPECIFIED
SHEET OF
SHEET OF
SHEET OF
1
Wednesday, July 29, 2015 1 1
Wednesday, July 29, 2015 1 1
Wednesday, July 29, 2015 1 1
DATE:
DATE:
DATE:
SCALE = NONE
SCALE = NONE
SCALE = NONE
2
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
3
4
5
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.
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DEMO MANUAL DC2453A
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 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
Copyright © 2004, Linear Technology Corporation
Linear Technology Corporation
8
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
dc2453afb
LT 0916 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2016
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