DC2237A Demo Manual Datasheet by Analog Devices Inc.

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l ’ LI” DEMO MANUAL DC2237A TECHNOLOGY mug—1
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DEMO MANUAL DC2237A
DESCRIPTION
LTM8064
58VIN, 6A CVCC Step‑Down
μModule Regulator
Demonstration circuit 2237A is a 58VIN, 6A, CVCC Step-
Down μModule
®
Regulator featuring the LTM8064. The
demo circuit is designed for a 5V output from an input
voltage range of 7.5V to 58V. The output can source 7A
(typical) or sink 9.1A (typical). The circuit can be operated
in either constant voltage mode or constant current mode.
Two or more LTM8064s can be paralleled to share load
current equally. In this configuration, a master part deter-
mines the output currents of the slave parts. The MODE
pin of the master part should be floating and all MODE
pins of slave parts should be grounded.
When the output sinks current, the circuit maintains
its output voltage regulation by power conversion, not
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.
power dissipation. This means that the energy provided
to LTM8064 is in turn delivered to its input power bus.
There must be something on the input power bus to ac-
cept or use the energy.
The LTM8064 data sheet gives a complete description of
the part, operation and application information. The data
sheet must be read in conjunction with this quick start
guide for demo circuit 2237A.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2237A
BOARD PHOTO
Figure 1. DC2237A Board Picture
2 L7LJ1‘JW
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DEMO MANUAL DC2237A
PERFORMANCE SUMMARY
Specifications are at TA = 25°C
PARAMETER CONDITIONS UNITS
Minimum Input Supply Voltage 7.5 V
Maximum Input Supply Voltage 58 V
Output Voltage Sourcing Current 5 ± 5% V
Switching Frequency 325 kHz
Maximum Output Current Sourcing Current 6 A
Efficiency VIN = 12V, IOUT 6A 86 %
mm man am: Mon: . LTMBOM (ml) 58VIN, EA CVCC STEP-DOWN MMODULE REGULATOR m“ “ DEMO C‘RCUIT 2237A 0 sun PW“ cum 1 svvm an 36m. fig ‘5 + + 7.55m vw L7M'wwsncsz“ .. L7 LJUW 3
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DEMO MANUAL DC2237A
QUICK START PROCEDURE
Figure2. Proper Measurement Equipment Setup. Board Can Sink Current from the Load.
Demonstration circuit 2237A is easy to set up to evalu-
ate the performance of the LTM8064. Refer to Figure 2
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 and GND or VOUT and GND terminals.
1. With power off, connect the input power supply to VIN
and GND.
2. Connect a load to VOUT and GND.
3. Turn on the power at the input.
4. Check for the proper output voltage and current.
Note. If there is no output, temporarily disconnect the
load to make sure that the load is not set too high.
5. Once the proper output voltage is established, adjust the
load and input within the operating ranges and observe
the output voltage regulation, output current regulation,
ripple voltage, efficiency and other parameters.
L7LJCUEN2
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DEMO MANUAL DC2237A
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 C1 CAP POLYMER 15μF 20% 100V RAD PANASONIC, 100SXV15M
2 2 C2,C3 CAP CER 4.7μF 100V X7S 1206 AVX, 12061Z475MAT2A
3 1 C4 CAP., X7R, 0.01μF, 6.3V, 10%, 0603 MURATA, GRM188R70J103KA01D
4 1 C5 CAP TANT 330μF 10V 10% 2917 AVX, TPME337K010H0035
5 1 C6 CAP., X7R, 1μF, 16V, 10%, 0805 MURATA, GRM21BR71C105KA01L
8 1 C11 CAP., X7R, 0.1μF, 100V, 10%, 0603 MURATA, GRM188R72A104KA35D
9 1 C12 CAP CER 100μF 6.3V X5R 1210 MURATA, GRM32ER60J107ME20L
17 1 R1 RES., CHIP, 374k, 1/10W, 1%, 0603 VISHAY, CRCW0603374KFKEA
18 1 R2 RES., CHIP, 124k, 1/10W, 1%, 0603 VISHAY, CRCW0603124KFKEA
19 3 R3,R8,R9 RES., CHIP, 100k, 1/10W, 1%, 0603 VISHAY, CRCW0603100KFKEA
20 1 R4 RES., CHIP, 130k, 1/10W, 1%, 0603 VISHAY, CRCW0603130KFKEA
21 1 R5 RES., CHIP, 5.11k, 1/10W, 1%, 0603 VISHAY, CRCW06035K11FKEA
22 1 R6 RES., CHIP, 0Ω, 1/10W, 0603 VISHAY, CRCW06030000Z0EA
24 1 U1 I.C., REGULATOR, BGA-108-16 × 11.9 × 5.01 LINEAR TECHNOLOGY., LTM8064EY#PBF
Additional Demo Board Circuit Components
6 0 C7, C8 (OPT) CAP., 0603 OPTION
7 0 C9, C10 (OPT) CAP., 1210 OPTION
12 0 FB1 (OPT) FERRITE CHIP 30Ω 6A 0805 OPTION
16 0 L1 (OPT) IND., IHLP2525 OPTION
23 0 R7, R10 (OPT) RES., CHIP, 0603 OPTION
Hardware for Demo Board Only
10 4 E2, E3, E7, E8 TESTPOINT, TURRET, 0.061" PBF MILL-MAX, 2308-2-00-80-00-00-07-0
11 10 E4-E6, E9-E15 TESTPOINT, TURRET, 0.094” PBF MILL-MAX, 2501-2-00-80-00-00-07-0
13 5 J1-J5 JACK BANANA KEYSTONE, 575-4
14 1 JP1 HEADER 3-PIN 0.079”SINGLE ROW WURTH ELEKTRONIK, 62000311121
15 1 XJP1 SHUNT, 0.079” CENTER WURTH ELEKTRONIK, 60800213421
25 4 MH1-MH4 STAND-OFF, NYLON 0.50” WURTH ELEKTRONIK, 702935000
DEMO MANUAL DC2237A _ a . Bi 7 55:12. is; as. 3...! w. it!!! ~ ( mNN FSUKU OSuD i (2 I E! Eta-S. iii“! 4! >mvoom2k4 6.3. H: «9535 328:: 5535 85% i .flflahg. 833 BE gags...“ Egaiué... E .8525“. fihufifi .52... 53%? “5—,: D 5.5. “2%“qu .Hueflfi... 3:9. «#358 —« 1% arm 52 L7 LJUW
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DEMO MANUAL DC2237A
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 representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SCHEMATIC DIAGRAM
ALL CAPACITORS ARE 0603.
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE 0603.
OPTIONAL CIRCUIT
VEMI
VIN
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
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.
www.linear.com
2
DEMO CIRCUIT 2237A
Wednesday, March 16, 2016 11
N/A
LTM8064EY
58VIN, 6A CVCC STEP-DOWN µMODULE REGULATOR
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
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.
www.linear.com
2
DEMO CIRCUIT 2237A
Wednesday, March 16, 2016 11
N/A
LTM8064EY
58VIN, 6A CVCC STEP-DOWN µMODULE REGULATOR
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
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.
www.linear.com
2
DEMO CIRCUIT 2237A
Wednesday, March 16, 2016 11
N/A
LTM8064EY
58VIN, 6A CVCC STEP-DOWN µMODULE REGULATOR
J1
VEMI
C12
100uF
6.3V
1210
E3
VIN
+
C5
330uF
10V
TPME337K010R0035
R10
OPT
J4
GND
R5
5.11K
E2
GND
J5
VOUT
5V/6A
R3
100K
R2
124K
E15
GND
C4
10nF
6.3V
C7
OPT
+
C1
15uF
100V
100SXV15M
C9
OPT
C6
1uF
16V
0805
J3
VIN
7.5V - 58V
R8
100K
C3
4.7UF
100V
1206
J2
GND
E8
GND
E14
GND
E5
MODE
C10
OPT
E13
SS
E7
VOUT
E12
CTRL2
R4
130K
E6
SYNC
LTM8064EY
U1
VIN
A5
VIN
A6
VIN
A7
VIN
A8
VIN
A9
VIN
B5
VIN
B6
VIN
B7
VIN
B8
VIN
B9
VOUT
H1
VOUT
H2
VOUT
H3
VOUT
H4
VOUT
J1
VOUT
J2
VOUT
J3
VOUT
J4
VOUT
K1
VOUT
K2
VOUT
K3
VOUT
K4
VOUT
L1
VOUT
L2
VOUT
L3
VOUT
L4
VOUT
M1
VOUT
M2
VOUT
M3
VOUT
M4
FB
A2
PGOOD
A3
RUN/UVLO
A4
CTRL2
B1
VREF
B2
CTRL1
C1
SS
D1
IOUTMON
E1
RT
E2
SYNC
F1
MODE
F2
GND
A1
GND
B3
GND
B4
GND
C2
GND
C3
GND
C4
GND
C5
GND
C6
GND
C7
GND
C8
GND
C9
GND
D2
GND
D3
GND
D4
GND
D5
GND
D6
GND
D7
GND
D8
GND
D9
GND
E3
GND
E4
GND
E5
GND
E6
GND
E7
GND
E8
GND
E9
GND
F3
GND
F4
GND
F5
GND
F6
GND
F7
GND
F8
GND
F9
GND
G1
GND
G2
GND
G3
GND
G4
GND
G5
GND
G6
GND
G7
GND
G8
GND
G9
GND
H5
GND
H6
GND
H7
GND
H8
GND
H9
GND
J5
GND
J6
GND
J7
GND
J8
GND
J9
GND
K5
GND
K6
GND
K7
GND
K8
GND
K9
GND
L5
GND
L6
GND
L7
GND
L8
GND
L9
GND
M5
GND
M6
GND
M7
GND
M8
GND
M9
R9
100K
C11
0.1uF
100V
R7
OPT
C8
OPT
E9
PGOOD
E11
CTRL1
C2
4.7UF
100V
1206
E4
RUN
R1
374K
E10
IOUTMON
L1
OPT
R6
0
FB1
OPT
JP1
FCM
DCM
MODE
1
3
2
6
dc2237af
DEMO MANUAL DC2237A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2016
LT 0316 • PRINTED IN USA
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

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