Linear Technology DC2277A Quick setup guide

1
DC2277af
DEMO MANUAL DC2277A
Description
LTC3886 UKG Package
Programming Board for Dual Output
Step Down DC/DC Controller with
Digital Power System Management
Demonstration circuit 2277A contains the circuitry needed
to program and verify the EEPROM of the LT C
®
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.
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 or DC1427A.
DEMO SYSTEM REQUIRED HARDWARE
n Windows PC
n USB to I2C/SMBus/PMBus Controller, DC1613A or
DC1427A
n DC2277A
DEMO SYSTEM REQUIRED SOFTWARE
n LTpowerPlay™
LTC3886 FEATURES
n PMBus/I2C compliant serial interface
n Telemetry read-back includes VIN,IIN,VOUT,IOUT,
temperature and faults
n Programmable voltage,current limit,digital soft-start/
stop, sequencing,margining,control loop compensa-
tion, OV/UV and frequency synchronization (100kHz to
750kHz)
n ±0.5% output voltage accuracy over temperature
n Integrated 16-bit ADC and 12-bit DAC
n Internal EEPROM and fault logging
n Integrated powerful N-channel MOSFET gate drivers
n Wide VIN range: 4.5V to 60V
n VOUT range: 0.5V to 13.8V
n Supports power-up into pre-biased load
n Analog current mode control loop
n Accurate PolyPhase
®
current sharing for up to 6 phases
n Available in a 52-lead (7mm × 8mm) QFN package
Design files for this circuit board are available at
http://www.linear.com/demo/DC2277A
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.
Figure1. LTC3886 Programming Setup Using the DC2277A
USB to
I2C/PMBus Dongle
DC1613A or DC1427A
LTC3886
PROGRAMMING
BOARD DC2277A
RIBBON CABLEUSB CABLE
dc2277a F01

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DC2277af
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.
1. Make sure jumpers are in the following positions:
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.
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.
6. On your PC,launch LTpowerPlay.LTpowerPlay will
identify the DC2277A 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
grounded. Ignore this fault at the moment.
7. Change the GUI parameters according to your system
requirements. Or,you can click button to open an
existing project file.
8. After you finish the design,click to save the project
file
Figure2. Open Shell. Verify IC Installed

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DC2277af
DEMO MANUAL DC2277A
Quick start proceDure
Figure3. DC1613A Ribbon Cable Installation

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DC2277af
DEMO MANUAL DC2277A
‘System Tree’ View
‘Config’ View
‘Telemetry’ View
‘Idealized On/OFF Waveforms’ View
‘Chip Dashboard’
View
‘Quick Inspect’
View
‘Telemetry Plot’
View
Toolbar
Figure4. LTpowerPlay Interface of Programming the LTC3886
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.
WHAT YOU CAN DO WITH THE DC2277A
1. Compare the contents of the EEPROM in the
LTC3886UKG against your project or hex file.
2. Reprogram the contents of the EEPROM in the
LTC3886UKG using your project or hex file.
3. Verify the EEPROM within the DC2277A contains the
factory defaults.
n From the LTpowerPlay interface,load the factory
defaults project file. This file is located at:
C:\Program Files\Linear Technology\LTpowerPlay\
project files\ltc3886\datasheet_defaults.proj
n Click the Verify button.

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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
Hardware: For Demo Board Only
1 2 JP1, JP2 CONN., HEADER, 1X3, 2mm WURTH ELEKTRONIK, 62000311121
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,
TP8, TP10, TP11, TP12, TP13
TERMINAL TURRET DBL .084"L KEYSTONE, 1593-2
6 4 (STAND-OFF) STANDOFF, NYLON, SNAP-ON, 0.500" KEYSTONE, 8833

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DC2277af
DEMO MANUAL DC2277A
schematic Diagram
5
5
4
4
3
3
2
2
1
1
D D C C B B A A
ON (3886) OFF WP
1206
GND
TG0
CHPWR
VDD33
VDD25
FAULT0B
ALERTB
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS AND CAPACITORS ARE 0805.
12060603
0603
0603
0603 1206
0603
0603
0603
0603
0603
0603
Partin
+3.3V +5V
SCL SDA
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
YS
PRODUCTION1 1-04-16
__
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
YS
PRODUCTION1 1-04-16
__
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
YS
PRODUCTION1 1-04-16
__
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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.
SCALE = NONE
www.linear.com
1
Tuesday, January 12, 2016
12
PROGRAMMING BOARD FOR LTC3886UKG
LT
YS
B
LTC3886UKG
DEMO CIRCUIT 2277A
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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.
SCALE = NONE
www.linear.com
1
Tuesday, January 12, 2016
12
PROGRAMMING BOARD FOR LTC3886UKG
LT
YS
B
LTC3886UKG
DEMO CIRCUIT 2277A
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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.
SCALE = NONE
www.linear.com
1
Tuesday, January 12, 2016
12
PROGRAMMING BOARD FOR LTC3886UKG
LT
YS
B
LTC3886UKG
DEMO CIRCUIT 2277A
C14 0.1µF
R41 OPT
TP6 R28
1.00K
C16 0.1µF
C15 4.7µF
TP3
LED2
GREEN LED
21
U2
LTC4361CTS8-2
ON
1
OUT 2
GATEP
3
GND
4
IN
5
SENSE
6GATE 7
PWRGD 8
Q5
SI1416EDH-T1-GE3
1
3
4
2
5
6
R21 1.00K
C12 0.01µF
R44 OPT R46
OPT
U1
LTC3886UKG
TG0
2SW0 1
ISENSP_0
4
ISENSM_0
5
TSNS0
6
VSENSP_0
7
VSENSM_0
8
ISENSP_1
9
ISENSM_1
10
ITH0R
11
ITH0
12
SYNC
13
SCL
14
SDA
15
ALERTB
16
FAULT0B
17
FAULT1B
18
RUN0
19
RUN1
20
ASEL0
21
ASEL1
22
VOUT0_CFG
23
VOUT1_CFG
24
FREQ_CFG
25
PHAS_CFG
26
VDD25 27
WP 28
SHARE_CLK 29
VDD33 30
ITH1 31
ITH1R 32
PG1 33 PG0 34
VSENSP_1 35
TSNS1 36
TG1 38
SW1 39
BOOST1 40
BG1 42
EXTVCC 43
INTVCC 44
IINM 46
IINP 47
VIN 48
BG0 50
BOOST0 52
GND 53
C11 0.1µF
R27
0.499
LED1 RED LED
2 1
JP1
R20 10.0K
R22 100K
TP4
C13 10.0µF
Q2
SI2365EDS-T1-E3
3 2
1
R26
10.0K
C17 4.7µF
TP5
R24
10.0K
R19
1.00K
R43 OPT
R40 10.0K
R45 OPT
R29 10.0K
TP2
Q4
2N7002
3
1
2
R42 OPT
TP13
TP1

7
DC2277af
DEMO MANUAL DC2277A
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
5
5
4
4
3
3
2
2
1
1
D D C C B B A A
ON OFF EE WP
NOTE: J1 AND J2 CONNECT TO RIBBON CABLES OF I2C / SMBUS CONTROLLER (DONGLE)
14 Pin
12 Pin
DC1613 DC1427
ENB
SDA
SCL
+3.3V
+5V
6032
60320603
+3.3V
+5V
SCL
SDA
ENB
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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.
SCALE = NONE
www.linear.com
1
Tuesday, January 12, 2016
22
PROGRAMMING BOARD FOR LTC3886UKG
LT
YS
B
LTC3886UKG
DEMO CIRCUIT 2277A
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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.
SCALE = NONE
www.linear.com
1
Tuesday, January 12, 2016
22
PROGRAMMING BOARD FOR LTC3886UKG
LT
YS
B
LTC3886UKG
DEMO CIRCUIT 2277A
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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.
SCALE = NONE
www.linear.com
1
Tuesday, January 12, 2016
22
PROGRAMMING BOARD FOR LTC3886UKG
LT
YS
B
LTC3886UKG
DEMO CIRCUIT 2277A
TP11
+
C18 1.0µF
R38
OPT
R37 4.99K
R36 4.99K
R31
10.0K
TP12
J1
V+ 1
3.3V 2
GND 3
SCK/SCL 4
MISO 5
CS 6
MOSI/SDA 7
GND 8
EESDA 9
EEVCC 10
EESCL 11
EEGND 12
GND 13
GPIO_1 14
R30
1
TP10
TP8
U3
24LC024-I/SN
A0
1
A1
2
A2
3
VSS
4SDA 5
SCL 6
WP 7
VCC 8
R34
1
TP7
R33
10.0K
+
C19
1.0µF
C20 0.1µF
JP2
J2
AUXP 1
SDA 2
GND 3
SCL 4
LGKPWR 5
ALERTB 6
7
GPIO_1
OUTEN 8
GPIO_2 9
GND 10
AUXSCL 11
AUXSDA 12
R35 4.99K
R39
1

8
DC2277af
DEMO MANUAL DC2277A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ●FAX: [phone] ●www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2016
LT 0316 • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LT C ) 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 applica-
tion engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation

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