DC2252A-B - Demo Manual

DEMO MANUAL DC2252A-B
LTC3882EUJ-1
Programming Board for Dual Output DC/DC Voltage
Mode Controller with Digital Power System Management
Description
Demonstration circuit 2252A-B is a lab tool to program
and verify the EEPROM inside the LTC®3882-1 IC. The
DC2252A-B is shipped with a LTC3882-1 placed in the
clamshell style programming socket. The EEPROM contains the factory default configuration. The LTpowerPlayTM
.proj file that corresponds to the factory default can be
found in the GUI.
In order to properly verify the contents of the EEPROM,
download and install the LTpowerPlay software (GUI). The
software can be downloaded from:
http://www.linear.com/ltpowerplay
You also need a Linear Technology USB to I2C/SMBus/
PMBus Controller, DC1613A.
Demo System Required Hardware
Windows PC
nn USB to I2C/SMBus/PMBus Controller, DC1613A
nn DC2252A-B
nn
Demo System Required Software
nn LTpowerPlay
USB CABLE
LTC3882-1 FEATURES
PMBus/I2C Compliant Serial Interface
nn Monitor Voltage, Current, Temperature and Faults
nn Digitally Programmable Voltage, Current Limit, SoftStart/Stop, Sequencing, Margining, AVP and UV/OV
Thresholds
nn Programmable PWM Frequency or External Clock
Synchronization from 250kHz to 1.25MHz
nn ±0.5% Output Voltage Accuracy
nn Internal EEPROM with Fault Logging
nn Wide V Range: 3V to 38V
IN
nn V
Range:
0.5V to 5.25V
OUT
nn Analog Leading-Edge Voltage Mode Control Loop
nn Accurate PolyPhase® Current Sharing
nn Dedicated Power Good Output Voltage Monitor
nn Differential Voltage Sense on Both Outputs
nn Available in a 40-Pin (6mm × 6mm) QFN Package
nn
Design files for this circuit board are available at
http://www.linear.com/demo/DC2252A-B
L, LT, LTC, LTM, Linear Technology, PolyPhase and the Linear logo are registered trademarks
and LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
USB TO
I2C/PMBus CONTROLLER
DC1613A
RIBBON CABLE
LTC3882
PROGRAMMING BOARD
DC2252A-B
dc3882ab F01
Figure 1. LTC3882 Programming Setup Using DC2252A-B
dc2252abf
1
DEMO MANUAL DC2252A-B
Quick Start Procedure
Demonstration circuit 2252A-B makes it easy to program
and verify the EEPROM contents of the LTC3882.
4.Plug one end of the USB cable to your PC. Plug other
end of USB cable into the I2C/SMBus/PMBus controller.
1.Make sure jumpers are in the following positions:
5.Plug the ribbon cable of DC1613A into J2. See Figure 3.
JUMPER
POSITION
FUNCTION
JP1
DISABLE
No function on DC2252A-B
SW1
ON
Provide 3.3V to LTC3882 VDD33 Pin
2.Open the lid of the socket SKT1. Verify there is an IC
inside and in the correct direction (White dot on IC
matches with PIN 1 on PCB silkscreen). See Figure 2.
3.Close the lid. It will snap into place.
NOTE. Removal and insertion of the IC should be done
with either a tweezers or a vacuum suction device.
6.On your PC, launch LTpowerPlay. LTpowerPlay will
identify the DC2252A-B and launch the appropriate
GUI. See Figure 4.
NOTE. You will see an Under Temperature (UT) Fault.
This is normal since the temperature sensing pin is
floating. Ignore this fault at the moment.
7.Change the GUI parameters according to your system
button to open an
requirements. Or, you can click
existing project file.
8.After you finish the design, click
to save the project file.
Figure 2. Open Shell. Verify IC Installed
2
dc2252abf
DEMO MANUAL DC2252A-B
Quick Start Procedure
Figure 3. DC1613A Ribbon Cable Installation
TOOLBAR
“Chip Dashboard” View
“System Tree” View
“Config” View
“Telemetry” View
“Quick Inspect” View
“Telemetry Plot” View
“Idealized On/Off Waveforms” View
dc3882ab F04
Figure 4. LTpowerPlay Interface of Programming the LTC3882-1
dc2252abf
3
DEMO MANUAL DC2252A-B
Quick Start Procedure
Powering Down the Board Between
Programming Operations
Disconnect the USB cable from the DC1613A before removing or inserting a LTC3882-1 into the programming socket.
3.Verify the EEPROM within the DC2252A-B contains the
factory defaults.
What You Can Do With the DC2252A-B
1.Compare the contents of the EEPROM in the LTC3882-1
against your Project or Hex file.
C:\Program Files\Linear Technology\LTpowerPlay\
project files\democircuits\DC2252A
a. From the LTpowerPlay, load the factory defaults
project file. This file is located at:
b.Click the Verify button.
2.Reprogram the contents of the EEPROM in the LTC3882-1
using your project or Hex File.
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Required Circuit Components
1
1
SKT1
SOCKET, 6X6 QFN BGA FLAT LEAD LIDDED, THRU-HOLE
PLASTRONICS, 40QN50S16060-B
2
2
C14, C16
CAP., 0.10µF, X7R, 16V, 10%, 0603
AVX, 0603YC104KAT2A
3
2
C20, C21
CAP., 1µF, X7R, 16V, 10%, 0603
AVX, 0603YC105KAT2A
TDK, C3216X5R1C475K115AA
4
2
C15, C17
CAP., 4.7µF, X5R, 16V, 10%, 1206
5
1
D3
LED, GREEN, WATER CLEAR, 571nm @ 5mA, 4.5~28mcd @ 5 mA, 0603 LITE ON, LTST-C193KGKT-5A
6
1
R19
RES., 200Ω, 1/8W, 1%, 0805
VISHAY, CRCW0805200RFKEA
7
4
R29, R31, R32, R33
RES., 10k, 1/8W, 1%, 0805
VISHAY, CRCW080510K0FKEA
8
2
R36, R37
RES., 4.99k, 1/8W, 1%, 0805
VISHAY, CRCW08054K99FKEA
9
1
R38
RES., 1k, 1/8W, 1%, 0805
VISHAY, CRCW08051K00FKEA
10
0
R41, R45, R47, R49,
R50, R51, R52, R54
(OPT)
RES., OPTIONAL, 0805
OPT.
12
4
R44, R46, R53, R55
RES., 0Ω, 1/8W, 0805
VISHAY, CRCW08050000Z0EA
13
1
U2
I.C., EEPROM, I2C, 2kbit, 400kHz, 8-SOIC
MICROCHIP, 24LC025-I/SN
14
1
JP1
CONN., HEADER, 1X3, 2mm
SAMTEC, TMM-103-02-L-S
15
2
JP6, JP7
CONN., HEADER, 1X4, 2mm
SAMTEC, TMM-104-02-L-S
16
1
J2
CONN., HEADER, SHROUDED, 2X6, 2mm
FCI, 98414-G06-12ULF
17
1
SW1
SWITCH, SUB-MINIATURE SLIDE, DPDT, 6VDC, 0.3A, Thru-Hole
C&K COMPONENTS, JS202011CQN
18
9
TP1, TP4, TP5, TP7, TP8, TEST POINT, TURRET, 0.064" MTG. HOLE
TP9, TP10, TP11, TP13
19
4
MH1, MH2, MH3, MH4
STANDOFF, NYLON, SNAP-ON, 0.250"
KEYSTONE, 8831
20
3
JP1, JP6, JP7
SHUNT, 2mm
SAMTEC, 2SN-BK-G
21
0
U1 TO BE INSTALLED
DURING TEST
I.C., DUAL OUTPUT POLYPHASE STEP-DOWN DC/DC VOLTAGE
MODE CONTROLLER WITH DIGITAL POWER SYSTEM
MANAGEMENT, QFN40-UJ, 6mm x 6mm
LINEAR TECH, LTC3882EUJ-1#PBF
22
1
PCB, DC2252A
DEMO CIRCUIT 2252A
23
1
STENCIL, DC2252A (BOTTOM)
STENCIL DC2252A
4
MILL-MAX, 2308-2-00-80-00-00-07-0
dc2252abf
DEMO MANUAL DC2252A-B
Schematic Diagram
5
4
3
2
1
REVISION HISTORY
ECO
REV
__
30
28
SKT1
4
5
27
26
U1*
6
R29
R46 *
10.0K
JP1
TP5
R45 *
C16
0.1uF
R44 *
C17
4.7uF
1206
R41 *
C14
0.1uF
CHP33
VDD33
C
TP4
CHP25
C15
4.7uF
1206
20
19
18
17
16
21
15
22
14
9
10
13
23
12
8
11
24
GPIO0
R47 *
25
7
ALERTb
ENABLE
WP
DISABLE
29
3
SDA
DATE
HAORAN W. 6-05-14
D
2
SCL
APPROVED
PRODUCTION
R55
*
1
C
1
31
32
34
35
36
37
38
39
41
33
R53 R54
* *
TP13
40
GND
D
DESCRIPTION
TP1
R19
200
ASEL0
2
R
ASEL1
R49
(OPT)
1
H
2
R
3
L
4
1
H
L
R50
(OPT)
JP6
R51
(OPT)
B
*
3
4
B
JP7
1. ALL RESISTORS ARE 0805
ALL CAPACITORS ARE 0603.
-B
LTC3882EUJ-1
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
4
2
R31
10.0K
OFF
OPT
0
LTC Confidential-For Customer Use Only
LTC3882 / LTC3882-1 PROGRAMMING BOARD
LTC3882EUJ FAMILY
DEMO CIRCUIT 2252A
IC NO.
N/A
SCALE = NONE
Wednesday, January 28, 2015
DATE:
REV.
1
SHEET 1
3
2
1
3
2
1
OF 2
3.3V
C20
1uF
R32
10.0K
A
TITLE: SCHEMATIC
D
6
3
SW1
R33
10.0K
OPT
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
4
1
5
D
0
TECHNOLOGY Fax: (408)434-0507
TP7
ON
R41,R45,R47,R54 R44,R46,R53,R55
APPROVALS
SIZE
2. INSTALL SHUNTS AS SHOWN.
5
LTC3882EUJ
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
HZ
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG. HAORAN W.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
NOTE: UNLESS OTHERWISE SPECIFIED
5
U1
-A
R52
(OPT)
CUSTOMER NOTICE
A
ASSY
VDD33
R38
1K
D3
SCL
GREEN
TP8
SDA
TP10
ALERTb
TP9
SCL
SDA
ALERTb
C
C
TP11
U2
C21 24LC025-I/SN
1uF
J2
1
TO DC1613A
B
AUXP
SDA
GND
SCL
LGKPWR
ALERTB
GPIO_1
OUTEN
GPIO_2
GND
AUXSCL
AUXSDA
2
1
2
3
4
5
6
7
8
9
10
11
12
3
4
A0
VCC
A1
WP
A2
SCL
VSS
SDA
R36 R37
4.99K 4.99K
8
7
6
5
B
CUSTOMER NOTICE
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
HZ
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG. HAORAN W.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
A
TECHNOLOGY
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
LTC3882 / LTC3882-1 PROGRAMMING BOARD
4
N/A
SCALE = NONE
3
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
SIZE
5
5V
DATE:
IC NO.
LTC3882EUJ FAMILY
DEMO CIRCUIT 2252A
Wednesday, January 28, 2015
2
A
REV.
1
SHEET 2
OF 2
1
Figure 5. DC2252A-B Demo Circuit Schematic
dc2252abf
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.
5
DEMO MANUAL DC2252A-B
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
dc2252abf
Linear Technology Corporation
LT 0515 • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2015
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