DC2277A - Demo Manual

DEMO MANUAL DC2277A
LTC3886 UKG Package
Programming Board for Dual Output
Step Down DC/DC Controller with
Digital Power System Management
Description
LTC3886 FEATURES
Demonstration circuit 2277A contains the circuitry needed
to program and verify the EEPROM of the LTC®3886 in the
UKG package and that is its only purpose. The DC2277A
is shipped with a LTC3886 installed in the clamshell style
programming socket and its EEPROM contains the factory
default configuration. The LTpowerPlay™ #.proj file that
corresponds to the factory default can be found in
the GUI.
n
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
PMBus Controller, DC1613A or DC1427A.
I2C/SMBus/
DEMO SYSTEM REQUIRED HARDWARE
n
n
n
Windows PC
I2C/SMBus/PMBus
USB to
DC1427A
Controller, DC1613A or
DC2277A
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Telemetry read-back includes VIN, IIN, VOUT, IOUT,
temperature and faults
Programmable voltage, current limit, digital soft-start/
stop, sequencing, margining, control loop compensation, OV/UV and frequency synchronization (100kHz to
750kHz)
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±0.5% output voltage accuracy over temperature
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Integrated 16-bit ADC and 12-bit DAC
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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 60V
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VOUT range: 0.5V to 13.8V
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Supports power-up into pre-biased load
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Analog current mode control loop
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Accurate PolyPhase® current sharing for up to 6 phases
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Available in a 52-lead (7mm × 8mm) QFN package
Design files for this circuit board are available at
http://www.linear.com/demo/DC2277A
DEMO SYSTEM REQUIRED SOFTWARE
n
n
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
LTC3886
PROGRAMMING
BOARD DC2277A
dc2277a F01
Figure 1. LTC3886 Programming Setup Using the DC2277A
DC2277af
1
DEMO MANUAL DC2277A
Quick Start Procedure
Demonstration circuit 2277A makes it easy to program
and verify the EEPROM contents of the LTC3886 in the
UKG package.
5.If you have a DC1427A, plug the ribbon cable into J1.
If you have a DC1613A, plug the ribbon cable into J2.
See Figure 3.
1. Make sure jumpers are in the following positions:
6.On your PC, launch LTpowerPlay. LTpowerPlay will
identify the DC2277A and launch the appropriate GUI.
See Figure 4.
JUMPER
POSITION FUNCTION
JP1
OFF
Write Protection of LTC3886
JP2
ON
Write Protection of Identification EEPROM
2. Open the lid of the socket. Verify there is an LTC3886
inside. 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.
4.Plug one end of the USB cable to your PC. Plug other
end of USB cable into the I2C/SMBus/PMBus controller.
NOTE. You will see an Under Temperature (UT) Fault.
This is normal since the temperature sensing pin is
grounded. 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
file
to save the project
Figure 2. Open Shell. Verify IC Installed
2
DC2277af
DEMO MANUAL DC2277A
Quick Start Procedure
Figure 3. DC1613A Ribbon Cable Installation
DC2277af
3
DEMO MANUAL DC2277A
Quick Start Procedure
POWERING DOWN THE BOARD BETWEEN
PROGRAMMING OPERATIONS
Disconnect the USB cable from the DC1427A/DC1613A
before removing or inserting a LTC3886UKG into the
programming socket.
3. Verify the EEPROM within the DC2277A contains the
factory defaults.
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C:\Program Files\Linear Technology\LTpowerPlay\
project files\ltc3886\datasheet_defaults.proj
WHAT YOU CAN DO WITH THE DC2277A
1. Compare the contents of the EEPROM in the
LTC3886UKG against your project or hex file.
From the LTpowerPlay interface, load the factory
defaults project file. This file is located at:
n
Click the Verify button.
2. Reprogram the contents of the EEPROM in the
LTC3886UKG using your project or hex file.
Toolbar
‘Chip Dashboard’
View
‘System Tree’ View
‘Telemetry’ View
‘Quick Inspect’
View
‘Config’ View
‘Telemetry Plot’
View
‘Idealized On/OFF Waveforms’ View
Figure 4. LTpowerPlay Interface of Programming the LTC3886
4
DC2277af
DEMO MANUAL DC2277A
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Required Circuit Components
1
4
C11, C14, C16, C20
CAP., 0.1µF, X7R, 16V, 10%, 0603
NIC, NMC0603X7R104K16TRF
2
1
C12
CAP., 0.01µF, X7R, 25V, 10%, 0603
AVX, 06033C103KAT2A
3
1
C13
CAP., 10µF, X5R, 6.3V, 10%, 1206
AVX, 12066D106KAT2A
4
2
C15, C17
CAP., 4.7µF, X5R, 6.3V, 10%, 1206
AVX, 1206ZD475KAT2A
5
2
C18, C19
CAP., TANTALUM, 1µF, 10%, 50V
AVX, TAJC105K050RNJ
6
1
LED1
LED 3X2mm 650nm RED WTR CLR SMD
RΩ, SML-012V8TT86
7
1
LED2
LED 3X2mm 560nm GRN WTR CLR SMD
RΩ, SML-012P8TT86
8
1
Q2
MOSFET P-CH 20V 5.2A SOT-23-3
VISHAY, SI2365EDS-T1-GE3
9
1
Q4
MOSFET N-CH 60V 115mA SOT-23
FAIRCHILD SEMI, 2N7002
10
1
Q5
MOSFET N-CH 30V 3.9A SC-70-6
VISHAY, SI1416EDH-T1-GE3
11
3
R19, R21, R28
RES., 1k, 1/8W, 1%, 0805
PANASONIC, ERJ-6ENF1001V
12
7
R20, R24, R26, R29, R31, R33, R40 RES., 10k, 1/8W, 1%, 0805
PANASONIC, ERJ-6ENF1002V
13
1
R22
RES., 100k, 1/8W, 1%, 0805
PANASONIC, ERJ-6ENF1003V
14
1
R27
RES., 0.499Ω, 1/8W, 1%, 0805
STACKPOLE ELEC. RMCF0805FTR499
15
3
R30, R34, R39
RES., 1Ω, 1/8W, 1%, 0805
PANASONIC, ERJ-6RQF1R0V
16
3
R35, R36, R37
RES., 4.99k, 1/8W, 1%, 0805
PANASONIC, ERJ-6ENF4991V
17
1
U1
I.C., LTC3886UKG, 60V DUAL OUTPUT STEP-DOWN
CONTROLLER
LINEAR TECH., LTC3886UKG#PBF
18
1
U2
I.C., OVERVOLTAGE/OVERCURRENT PROTECTION
CONTROLLER
LINEAR TECH., LTC4361CTS8-2#PBF
19
1
U3
I.C., 2k I2C SERIAL EEPROM SOIC-8
MICROCHIP, 24LC024-I/SN
20
1
SKT1
SOCKET
LORANGER, 03713 531 6217
Additional Demo Board Circuit Components:
1
0
R38
RES., OPTION, 0805
OPTION
2
0
R41, R42, R43, R44, R45, R46
RES., OPTION, 0603
OPTION
CONN., HEADER, 1X3, 2mm
WURTH ELEKTRONIK, 62000311121
Hardware: For Demo Board Only
1
2
JP1, JP2
2
2
XJP1, XJP2
SHUNT, 2mm
WURTH ELEKTRONIK, 60800213421
3
1
J1
CONN, HEADER 14POS 2mm VERT GOLD
MOLEX, 87831-1420
4
1
J2
CONN, HEADER 12POS 2mm 2ROW GOLD
FCI CONNECTOR, 98414-G06-12ULF
5
12
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TERMINAL TURRET DBL .084"L
TP8, TP10, TP11, TP12, TP13
KEYSTONE, 1593-2
6
4
(STAND-OFF)
KEYSTONE, 8833
STANDOFF, NYLON, SNAP-ON, 0.500"
DC2277af
5
A
B
C
TP13
TP6
R22
100K
1
5
1. ALL RESISTORS AND CAPACITORS ARE 0805.
NOTE: UNLESS OTHERWISE SPECIFIED
GND
TG0
+3.3V
Q2
TP2
LED1
RED LED
FAULT0B
R24
10.0K
Partin
1
R26
10.0K
+5V
R21
1.00K
SDA
SCL
SI2365EDS-T1-E3
1.00K
R19
ALERTB
2
3
1
4
53
Q4
2N7002
0.499
R27
R20
10.0K
ISENSP_0
ISENSM_0
TSNS0
VSENSP_0
VSENSM_0
ISENSP_1
ISENSM_1
ITH0R
ITH0
SYNC
SCL
SW0
TG0
TP1
4
5
6
7
8
9
10
11
12
13
14
1
2
3
2
2
4
R40
10.0K
LTC3886UKG
1
3
5
6
ON
GATEP
IN
SENSE
R41
OPT
0603
4
GND
52
BOOST0
50
BG0
48
47
46
VIN
IINP
IINM
44
43
42
INTVCC
EXTVCC
BG1
SDA
ALERTB
FAULT0B
FAULT1B
RUN0
RUN1
ASEL0
ASEL1
VOUT0_CFG
VOUT1_CFG
FREQ_CFG
PHAS_CFG
BOOST1
SW1
TG1
3
1
2
GREEN LED
LED2
R45
OPT
0603
3
1.00K
C12
0.01µF
0603 R28
R46
OPT
0603
3
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
8
7
R44
OPT
0603
36
35
34
33
32
31
30
29
28
27
40
39
38
2
C11
0.1µF
0603
LT
SCALE = NONE
YS
2
DATE:
B
SIZE
YS
LTC3886UKG
DEMO CIRCUIT 2277A
Tuesday, January 12, 2016
IC NO.
1
SHEET 1
1
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
TP3
CHPWR
TP4
VDD25
VDD33
DATE
1-04-16
APPROVED
PROGRAMMING BOARD FOR LTC3886UKG
TECHNOLOGY
C15
4.7µF
1206
C14
0.1µF
0603
C13
10.0µF
1206
C17
4.7µF
1206
TP5
DESCRIPTION
PRODUCTION
1
OFF
WP
ON (3886)
1
REVISION HISTORY
REV
C16
0.1µF
0603
JP1
__
ECO
TITLE: SCHEMATIC
Q5
SI1416EDH-T1-GE3
10.0K
R29
APPROVALS
1
2
5
6
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.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
PWRGD
GATE
U2
LTC4361CTS8-2
R43
OPT
0603
TSNS1
VSENSP_1
PG0
PG1
ITH1R
ITH1
VDD33
SHARE_CLK
WP
VDD25
U1
R42
OPT
0603
15
16
17
18
19
20
21
22
23
24
25
26
2
OUT
GND
6
4
D
5
A
B
C
D
DEMO MANUAL DC2277A
Schematic Diagram
DC2277af
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
5
OPT
R38
1
R39
1
R34
1
R30
TP12
ENB
ENB
R31
10.0K
C19
1.0µF
6032
R33
10.0K
4
3
2
1
C20
0.1µF
0603
4
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
3
SDA
SCL
WP
VCC
5
6
7
3
SCALE = NONE
YS
LT
APPROVALS
VSS
A2
A1
A0
8
C18
1.0µF
6032
U3
24LC024-I/SN
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.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
CUSTOMER NOTICE
NOTE: J1 AND J2 CONNECT TO RIBBON CABLES
OF I2C / SMBUS CONTROLLER (DONGLE)
12 Pin
AUXP
SDA
GND
SCL
LGKPWR
ALERTB
GPIO_1
OUTEN
GPIO_2
GND
AUXSCL
AUXSDA
J2
DC1613
14 Pin
V+
3.3V
GND
SCK/SCL
MISO
CS
MOSI/SDA
GND
EESDA
EEVCC
EESCL
EEGND
GND
GPIO_1
J1
DC1427
+
4
+
5
OFF
EE WP
ON
DATE:
B
SIZE
R37
4.99K
SDA
SDA
TP10
+5V
TP11
+3.3V
TP7
DEMO CIRCUIT 2277A
LTC3886UKG
2
Tuesday, January 12, 2016
IC NO.
1
SHEET 2
OF 2
1
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
+5V
+3.3V
1
PROGRAMMING BOARD FOR LTC3886UKG
TECHNOLOGY
R36
4.99K
SCL
TITLE: SCHEMATIC
JP2
R35
4.99K
SCL
TP8
2
A
B
C
D
DEMO MANUAL DC2277A
Schematic Diagram
DC2277af
7
DEMO MANUAL DC2277A
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
8
DC2277af
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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