DC1709A - Demo Manual

DEMO MANUAL DC1709A
LTC3880EUJ
Programming Board for Dual-/
Two-Phase DC/DC Controller with
Digital Power Management
Description
LTC3880 FEATURES
Demonstration circuit 1709A contains the circuitry needed
to program and verify the EEPROM within the LTC®3880
and LTC3880-1. That is its only purpose. The DC1709A
is shipped with a LTC3880 installed in the clamshell style
programming socket. The EEPROM contains the factory
default configuration. The LTpowerPlay™ .proj file that
corresponds to the factory default can be found in
the GUI.
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±0.5% output voltage accuracy over temperature
In order to properly verify the contents of the EEPROM,
download and install the LTpowerPlay software (GUI).
The software can be downloaded from:
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Integrated 16-bit ADC
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Internal EEPROM and fault logging
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Integrated powerful N-channel MOSFET gate drivers
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Wide VIN range: 4.5V to 24V
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VOUT range: 0.5V to 5.5V
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Supports power-up into prebiased load
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Analog current mode control loop
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Accurate PolyPhase® current sharing
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Available in a 40-pin (6mm × 6mm) QFN package
http://www.linear.com/ltpowerplay
You also need a Linear Technology USB to I2C/SMBus/
PMBus Controller, DC1613A or DC1427A.
DEMO SYSTEM REQUIRED HARDWARE
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Windows PC
I2C/SMBus/PMBus
USB to
DC1427A
Controller, DC1613A or
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Telemetry readback includes VIN, IIN, VOUT, IOUT,
temperature and faults
Programmable voltage, current limit, digital soft-start/
stop, sequencing, margining, OV/UV and frequency
synchronization (250kHz to 1MHz)
Design files for this circuit board are available at
http://www.linear.com/demo
DC1709A
DEMO SYSTEM REQUIRED SOFTWARE
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PMBus/I2C compliant serial interface
L, LT, LTC, LTM, Linear Technology, the Linear logo and PolyPhase are registered trademarks
and LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
LTpowerPlay
USB CABLE
USB to
RIBBON CABLE
Dongle
DC1613A or DC1427A
I2C/PMBus
LTC3880
PROGRAMMING
BOARD DC1709A
dc1709a F01
Figure 1. LTC3880 Programming Setup Using the DC1709A
DC1709af
1
DEMO MANUAL DC1709A
Quick Start Procedure
Demonstration circuit 1709A makes it easy to program
and verify the EEPROM contents of the LTC3880.
1. Make sure jumpers are in the following positions:
JUMPER
POSITION FUNCTION
JP1
Off
Write Protection of LTC3880
JP2
On
Write Protection of Identification EEPROM
6. On your PC, launch LTpowerPlay. LTpowerPlay will
identify the DC1709A and launch the appropriate GUI
(see Figure 5).
NOTE: You will see an undertemperature (UT) fault. This
is normal since the temperature sensing pin is grounded.
Ignore this fault at the moment.
2. Open the lid of the socket, SKT1. Verify there is an IC
inside (see Figure 2).
7. Change the GUI parameters according to your system
requirements. Or, you can open an existing project file
by clicking this button:
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.
8. After you finish the design, save the project file by
clicking this button:
4. Plug one end of the USB cable to your PC. Plug the
other end of the USB cable into the I2C/SMBus/PMBus
controller.
5. If you have a DC1427A, plug the ribbon cable into J1
(see Figure 3). If you have a DC1613A, plug the ribbon
cable into J2, as shown in Figure 3 and Figure 4.
POWERING DOWN THE BOARD BETWEEN
PROGRAMMING OPERATIONS
Disconnect the USB cable from the DC1427A/DC1613A
before removing or inserting a LTC3880 into the programming socket.
Figure 2. Open Shell. Verify IC Installed
DC1709af
2
DEMO MANUAL DC1709A
Quick Start Procedure
Figure 3. FDC1427A Ribbon Cable Installation
Figure 4. DC1613A Ribbon Cable Installation
DC1709af
3
DEMO MANUAL DC1709A
Quick Start Procedure
WHAT YOU CAN DO WITH THE DC1709A
1. Compare the contents of the EEPROM in the LTC3880
against your project or hex file.
3. Verify the EEPROM within the DC1709A contains the
factory defaults.
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2. Reprogram the contents of the EEPROM in the LTC3880
using your project or hex file.
From the LTpowerPlay interface, load the factory
defaults project file. This file is located at:
C:\Program Files\Linear Technology\LTpowerPlay\
project files\democricuits\LTC3880_datasheet_
defaults.proj
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Click the Verify button.
Design files for this circuit board are available at
http://www.linear.com/demo
Figure 5. LTpowerPlay Interface of Programming the LTC3880
DC1709af
4
DEMO MANUAL DC1709A
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Required Circuit Components
1
1
SKT1
6×6 QFN FLAT LEAD LIDDED THROUGH-HOLE
SOCKET
PLASTRONICS, 40QN50S16060-B
2
4
C11, C14, C16, C20
CAP., 0.10µF, 10%, 16V, X7R, 0603
AVX, 0603YC104KAT2A
3
0
C12
CAP., CER, 10000pF, 25V, 10%, X7R, 0603, OPT.
AVX, 06033C103KAT2A
4
1
C13
CAP., 1µF, 16V, CERAMIC, X7R, 1206
AVX, 1206YZ105KAT
5
2
C15, C17
CAP., 4.7µF, 6.3V, CERAMIC, X5R, 1206
TDK, C3216X5R0J475K
6
4
C18, C19
CAP., TANTALUM, 1µF, 50V, 10%, SMD
AVX, TAJC105K050RNJ
7
1
LED1
LED, RED S-TYPE GULL WING, 2.03V, SMD
PANASONIC, LN1271RTR
8
1
LED2
LED, GREEN S-TYPE GULL WING 2.03V, SMD
PANASONIC, LN1371SGTRP
9
3
Q1, Q2, Q3
MOSFET P-CH, 20V, 580mA, SOT23-3
VISHAY, TP0101K-T1-E3
10
1
Q4
MOSFET N-CH, 60V, 115mA, SOT-23
FAIRCHILD SEMICONDUCTOR, 2N7002
11
1
Q5
MOSFET, N-CH, 30V, 5.1A, SC70-6
VISHAY, Si1470DH-T1-E3
12
3
R19, R21, R28
RES., 1.00kΩ, 1/8W, 1%, 0805, SMD
VISHAY, CRCW08051K00FKEA
13
8
R20, R23-R26, R29, R31, R33
RES., 10.0kΩ, 1/10W, 1%, 0805, SM
YAGEO, RC0805FR-0710KL
14
1
R22
RES., 100kΩ, 1/8W, 1%, 0805, SMD
YAGEO, RC0805FR-07100KL
15
1
R27
RES., 0.50Ω, 1/3W, 1%, 0805, SMD
SUSUMU, RL1220S-R50-F
16
3
R30, R34, R39
RES., 1.0Ω, 1/8W, 1%, 0805, SMD
YAGEO, RC0805FR-071RL
17
0
R32, R38
RES., 1.0Ω, 1/8W, 1%, 0805, SMD, OPT.
18
3
R35, R36, R37
RES., 4.99kΩ, 1/8W, 1%, 0805, SMD
YAGEO, RC0805FR-074K99L
19
1
U3
IC., OVERVOLTAGE/OVERCURRENT PROTECTION
CONTROLLER
LINEAR TECHNOLOGY, LTC4361CTS8-2#PBF
20
1
U2
IC., EEPROM, 2KBIT, 400kHz, 8SOIC
MICROCHIP, 24LC025-I/SN
21
2
JP1, JP2
HEADER, 0.079, SINGLE ROW, 3-PIN
SAMTEC, TMM-103-02-L-S
22
1
J1
CONN, HEADER, 14POS, 2mm, VERT GOLD
MOLEX, 87831-1420
CONN, HEADER, 12POS, 2mm, 2ROW GOLD
23
1
J2
24
13
TP1,TP2,TP3,TP4,TP5,TP6,TP7, TURRET, TERM SOLDER, 0.156", 0.066"L
TP8,TP9,TP10,TP11,TP13
FCI CONNECTOR CORP., 98414-G06-12ULF
MILL-MAX, 2501-2-00-80-00-00-07-0
25
4
MTH1, MTH2, MTH3, MTH4
SUPPORT POST NYLON SNAP-IN, 1/4"
KEYSTONE, 8831
26
2
JP1, JP2
SHUNT
SAMTEC, 2SN-BK-G
27
1
STENCIL, TOP
STENCIL, DC1709A
28
1
FAB, PRINTED CIRCUIT BOARD
DEMO CIRCUIT, 1709A
DC1709af
5
A
B
C
5
PGND
PARTIN
R23 R25
10.0K 10.0K
ENB
Q1
TP0101K-T1-E3
TP1
TP2
1.00K
R19
SDA
SCL
2. INSTALL SHUNTS AS SHOWN.
1. ALL RESISTORS ARE 0805
ALL CAPACITORS ARE 0603.
4
+5V
SKT1
3
LTC3880EUJ
0.499
R27
ON
GATEP
IN
SENSE
8
7
GREEN LED
R29
C15
4.7礔
1206
C14
0.1礔
3
2
SCALE = NONE
C13
1.0礔
1206
DATE:
N/A
SIZE
CHPWR
CHP25
YI S.
APPROVED
1
LTC3880EUJ FAMILY
DEMO CIRCUIT 1709A
Monday, May 21, 2012
IC NO.
DATE
3-30-12
SHEET 1
3
OF 2
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
1
LTC3880 PROGRAMMING BOARD
TECHNOLOGY
TP3
TP4
CHP33
PRODUCTION
3
TP5
DESCRIPTION
REVISION HISTORY
REV
TITLE: SCHEMATIC
C11
0.1礔
C17
4.7礔
1206
OFF
WP (Write Protect)
ON (3880)
__
ECO
C16
0.1礔
JP1
APPROVALS
1.00K
R28
C12
0.01礔 Opt.
3
Q5
SI1470DH-T1-E3
10.0K
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
PWRGD
GATE
LED2
21
22
23
24
25
26
27
28
U3
LTC4361CTS8-2
VTRIM1_CFG
VDD25
WP
SHARE_CLK
VDD33
ITH1
VSENSE1
TSENSE1
30
29
2
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. SEAN M. / HZ
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG. YI S.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
1
3
5
6
TG1
SW1
Figure 6. LTC3880 Programming Board
Q4
2N7002A
R20
10.0K
R26
10.0K
R21
1.00K
Q3
TP0101K-T1-E3
R24
10.0K
SDA
SCL
SYNC
ISNS0M
ISNS0P
ITH0
ISNS1M
ISNS1P
VSENSE0M
VSENSE0P
LED1
RED LED
10
9
8
7
6
5
4
3
2
1
Q2
TP0101K-T1-E3
NOTE: UNLESS OTHERWISE SPECIFIED
TP6
R22
100K
+3.3V
GPIO0B
ALBERTb
TP13
40
11
GND
4
41
GND
39
TSNS0
12
ALERTb
38
TG0
SW0
GPIO0B
37
RUN0
14
RUN1
15
ASEL
16
GPIO1B
13
BOOST0
35
VIN
36
BG0
33
INTVCC
34
PGND
FREQ_CFG
17
VOUT0_CFG
18
31
BOOST1
32
BG1
VOUT1_CFG
19
VTRIM0_CFG
20
2
OUT
GND
4
1
2
5
6
6
4
D
5
A
B
C
D
DEMO MANUAL DC1709A
Schematic Diagram
DC1709af
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.
A
B
C
D
1
2
3
4
5
6
7
8
9
10
11
12
13
14
5
1
AUXP 2
SDA 3
GND 4
SCL 5
LGKPWR 6
ALERTB 7
GPIO_1
8
OUTEN 9
GPIO_2 10
GND 11
AUXSCL 12
AUXSDA
TO DC1613A
J2
V+
3.3V
GND
SCK/SCL
MISO
CS
MOSI/SDA
GND
EESDA
EEVCC
EESCL
EEGND
GND
GPIO_1
TO DC1427A
J1
ENB
C19
1.0礔
TANT
+
R33
10.0K
4
3
2
1
VSS
A2
A1
A0
5
6
7
8
C18
JP2
TANT
1.0礔
APPROVALS
SDA
SCL
WP
VCC
U2
24LC025-I/SN
+5V
C20
0.1礔
+3.3V
3
4
3
SCALE = NONE
DATE:
N/A
SIZE
5V
SDA
SCL
3.3V
PARTIN
TP12
ENB
LTC3880EUJ FAMILY
DEMO CIRCUIT 1709A
2
Tuesday, April 17, 2012
IC NO.
1
SHEET 2
OF 2
3
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
NOTE: J1 AND J2 CONNECT TO RIBBON CABLES
OF I2C / SM BUS CONTROLLER (DONGLE)
TP11
TP10
TP8
TP7
TP9
1
LTC3880 PROGRAMMING BOARD
TITLE: SCHEMATIC
2
TECHNOLOGY
R36 R37
4.99K 4.99K
OFF
EE WP
(Write Protect)
ON
R35
4.99K
SCL
SDA
PARTIN
Figure 7. LTC3880 Programming Board
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
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. SEAN M. / HZ
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG. YI S.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
CUSTOMER NOTICE
1 Opt.
R38
1
R39
1
R34
R32
1 Opt.
R31
10.0K
R30 1
4
+
5
A
B
C
D
DEMO MANUAL DC1709A
Schematic Diagram
DC1709af
7
DEMO MANUAL DC1709A
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
DC1709af
8
Linear Technology Corporation
LT 0912 • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2012
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