DC2237A - Demo Manual

DEMO MANUAL DC2237A
LTM8064
58VIN, 6A CVCC Step‑Down
μModule Regulator
DESCRIPTION
Demonstration circuit 2237A is a 58VIN, 6A, CVCC StepDown 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 determines 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
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 accept 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
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.
BOARD PHOTO
Figure 1. DC2237A Board Picture
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1
DEMO MANUAL DC2237A
PERFORMANCE SUMMARY
Specifications are at TA = 25°C
PARAMETER
CONDITIONS
Minimum Input Supply Voltage
Maximum Input Supply Voltage
Output Voltage
UNITS
7.5
Sourcing Current
Switching Frequency
V
58
V
5 ± 5%
V
325
kHz
Maximum Output Current
Sourcing Current
6
A
Efficiency
VIN = 12V, IOUT 6A
86
%
2
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DEMO MANUAL DC2237A
QUICK START PROCEDURE
Demonstration circuit 2237A is easy to set up to evaluate the performance of the LTM8064. Refer to Figure 2
for proper measurement equipment setup and follow the
procedure below:
2.Connect a load to VOUT and GND.
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.
Note. If there is no output, temporarily disconnect the
load to make sure that the load is not set too high.
1.With power off, connect the input power supply to VIN
and GND.
3.Turn on the power at the input.
4. Check for the proper output voltage and current.
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.
Figure 2. Proper Measurement Equipment Setup. Board Can Sink Current from the Load.
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3
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
4
dc2237af
GND
SS
SYNC
MODE
RUN
VIN
7.5V - 58V
VIN
GND
GND
VEMI
E14
E13
E6
DCM
FCM
E5
E4
J3
C11
0.1uF
100V
E3
J2
E2
J1
C8
OPT
JP1
3
2
1
MODE
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.
C2
4.7UF
100V
1206
5.11K
R5
130K
R4
C9
OPT
C4
10nF
6.3V
R2
124K
C3
4.7UF
100V
1206
OPT
FB1
D1
A2
E2
F1
F2
A4
SS
FB
RT
SYNC
MODE
RUN/UVLO
R1
374K
C10
OPT
L1
OPT
1. ALL RESISTORS ARE 0603.
ALL CAPACITORS ARE 0603.
NOTES: UNLESS OTHERWISE SPECIFIED
R3
100K
C1
+
15uF
100V
100SXV15M
VEMI
VIN
B9
B8
B7
B6
B5
A9
A8
A7
A6
A5
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
U1
LTM8064EY
C12
100uF
6.3V
1210
H1
H2
H3
H4
J1
J2
J3
J4
K1
K2
K3
K4
L1
L2
L3
L4
M1
M2
M3
M4
VREF
CTRL2
CTRL1
IOUTMON
PGOOD
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
SCHEMATIC
R9
100K
C7
OPT
TECHNOLOGY
R8
100K
R7
OPT
0
R6
+
E15
E12
E11
E10
E9
J4
E8
J5
GND
CTRL2
CTRL1
IOUTMON
PGOOD
GND
GND
VOUT
5V/6A
VOUT
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
R10
OPT
C6
1uF
0805
16V
E7
DATE:
N/A
SIZE
SHEET
LTM8064EY
DEMO CIRCUIT 2237A
Wednesday, March 16, 2016
IC NO.
1
OF
1
2
REV.
58VIN, 6A CVCC STEP-DOWN µMODULE REGULATOR
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
TITLE:
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
B2
B1
C1
E1
A3
C5
330uF
10V
TPME337K010R0035
A1
B3
B4
C2
C3
C4
C5
C6
C7
C8
C9
D2
D3
D4
D5
D6
D7
D8
D9
E3
E4
E5
E6
E7
E8
E9
F3
F4
F5
F6
F7
F8
F9
G1
G2
G3
G4
G5
G6
G7
G8
G9
H5
H6
H7
H8
H9
J5
J6
J7
J8
J9
K5
K6
K7
K8
K9
L5
L6
L7
L8
L9
M5
M6
M7
M8
M9
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
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
OPTIONAL CIRCUIT
DEMO MANUAL DC2237A
SCHEMATIC DIAGRAM
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5
DEMO MANUAL DC2237A
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
6
dc2237af
Linear Technology Corporation
LT 0316 • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2016
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