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DEMO MANUAL DC1508B
Description
LTC2974/LTC2975/LTC2977/
LTC2978/LTC2978A
Programming Board for PMBus
Power System Managers
The DC1508B programming board contains the circuitry
needed to program and verify the EEPROM of the LTC2974,
LTC2975, LTC2977, LTC2978, and LTC2978A. This is its
sole purpose. The DC1508B is shipped with a clamshell
style programming socket installed. The EEPROM contains
the factory default configuration. The LTpowerPlay™ *.proj
file that corresponds to the factory default can be found
in the GUI.
To properly program and verify the contents of the EEPROM,
download and install the LTpowerPlay software (GUI).
http://www.linear.com/ltpowerplay/
You also need a Linear Technology DC1613 USB to I2C/
SMBus/PMBus Controller.
DEMO SYSTEM REQUIRED HARDWARE
n Windows PC
n USB-to-I2C/SMBus/PMBus Controller (DC1613)
n DC1508B-A or DC1508B-B
DEMO SYSTEM REQUIRED SOFTWARE
n LTpowerPlay L, LT, LTC, LTM, Linear Technology 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.
Power System Manager Features
n Sequence, Trim, Margin, Supervise Power Supplies
n Manage Faults, Monitor Telemetry, Create Fault Logs
n PMBus Compliant Command Set
n Supported by LTpowerPlay GUI
n Margin or Trim Supplies to ±0.25% Accuracy
n Fast OV/UV Supervisors per Channel
n Supports Multichannel Fault Management
n Automatic Fault Logging to Internal EEPROM
n Operates Autonomously without Additional SW
n OV/UV VOUT and One VIN Supervisor
n Telemetry Reads Back VIN, VOUT, and Temperature
n Time-Based Output Sequencer
n I2C/SMBus Serial Interface
n All Devices Available in 64-lead QFN Package
Design files for this circuit board are available at
http://www.linear.com/demo/DC1508B
Figure 1. LTC297x Programming Setup Using DC1508B
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DEMO MANUAL DC1508B
There are two versions of the DC1508B. Each version
of the programming board comes with only one socket.
See Table 1.
LTpowerPlay is a powerful Windows-based development
environment that supports Linear Technology Power
System Management ICs with EEPROM. The software
supports a variety of different tasks. You can use LTpow-
erPlay to evaluate Linear Technology ICs by connecting
to a demo board system. LTpowerPlay can also be used
in an offline mode (with no hardware present) in order to
build a multichip configuration file that can be saved and
BoarD photo
orDer information
LtpowerpLay GUi software
Figure 2. DC1508B Top Side Details (DC1508B-A Shown)
Table 1.
Order Number Supported Devices
DC1508B-A LTC2977, LTC2978, LTC2978A
DC1508B-B LTC2974, LTC2975
reloaded at a later time. LTpowerPlay provides unprec-
edented diagnostic and debug features. It becomes a
valuable diagnostic tool during board bring-up to program
or tweak the power management scheme in a system or to
diagnose power issues when bringing up rails. LTpower-
Play utilizes the DC1613 I2C/SMBus/PMBus Controller to
communicate with one of many potential targets, including
the DC1508B programming board or a customer board.
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DEMO MANUAL DC1508B
The software also provides an automatic update feature
to keep the software current with the latest set of device
drivers and documentation. The LTpowerPlay software
can be downloaded from:
http://www.linear.com/ltpowerplay
LtpowerpLay GUi software
To access technical support documents for LTC Power
System Management products visit Help, View Online
Help on the LTpowerPlay menu.
Figure 3. Screenshot of the LTpowerPlay GUI
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DEMO MANUAL DC1508B
QUick start proceDUre
The DC1508B programming board makes it easy to
program and verify the EEPROM contents of the device.
1. Place jumpers and switches in the following default
positions.
WP: OFF
ASEL1: L
ASEL0: L
S1: OFF
NOTE: By default, the ASEL jumpers are both set to low.
If you wish to program a device with an offset address
other than 0x5C, adjust the ASEL jumpers appropriately.
Consult device data sheet for details.
2. Connect the DC1613 controller to your PC. Plug the
ribbon cable into connector J1 of the DC1508B pro-
gramming board.
3. Open the socket lid. Place the IC inside with pin 1 located
in the upper left corner. See Figure 4.
Figure 4. Open Clamshell Lid
4. Close lid. It will snap into place. See Figure 5.
NOTE: Removal and insertion of the IC should be done
with either tweezers or a vacuum suction device, and
also with the power switch S1 set to OFF.
Figure 5. DC1613 Ribbon Cable Attached and Lid Closed
5. Set the power switch S1 to the ON position. The VDD33
LED will illuminate, indicating the on-chip regulator is
providing internal power.
6. Launch the LTpowerPlay software from your PC. Select
Utilities>Programming Utility from the menu. Click
“…” next to the selection box and select a .proj file to
program the device.
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DEMO MANUAL DC1508B
QUick start proceDUre
7. LTpowerPlay is ready to program/verify the device.
a. Click the Program and Verify button, and wait for the
process to complete.
b. After the process is complete, you will see Successfully
Programmed and Verified Device in the status bar at
the bottom.
8. Prior to removing the device and programming another,
power must be removed from the device. Set the power
switch S1 to the OFF position. Open the socket lid.
Remove the device with tweezers or a vacuum tool.
The USB ribbon cable may remain connected to the
programming board.
9. To program another device, repeat Steps 3 through 5,
then Steps 7 and 8. LTpowerPlay’s Programming Utility
does not need to be closed.
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DEMO MANUAL DC1508B
parts List
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 U1 (DC1508B-A) or
U2 (DC1508B-B) IC SOCKET, SPRING LOADED, 64-QFN PLASTRONICS: 64QN50S19090-A
2 3 C1, C2, C7 CAP CER 1µF 16V 10% X7R 0603 MURATA: GRM188R71C105KA12D
3 8 C3, C4, C5, C6, C8, C9, C10, C11 CAP CER 0.1µF 16V 10% X7R 0603 MURATA: GRM188R71C104KA01D
4 1 J1 CONN HEADER 12POS 2mm STR DL PCB FCI: 98414-G06-12ULF
5 1 JP1 CONN HEADER 0.100 INCH 1X3POS WÜRTH: 613 003 111 21
6 2 JP2, JP3 CONN HEADER 0.100 INCH 1X4POS WÜRTH: 613 004 111 21
7 1 LED1 LED GREEN HIGH BRIGHT ESS SMD PANASONIC: LNJ326W83RA
8 4 MH1, MH2, MH3, MH4 STAND-OFF NYLON 1/4" SNAP IN WÜRTH: 702 931 000
9 5 R1, R2, R4, R7, R8 RES 10.0k 1/10W 1% 0603 SMD YAGEO: RC0603FR-0710KL
10 1 R3 RES 1.3k 1/10W 1% 0603 SMD YAGEO: RC0603JR-071K3L
11 0 R5, R6 (OPTIONAL) RES 10.0k 1/10W 1% 0603 SMD
12 3 SH1, SH2, SH3 CONN SHUNT 0.1IN 2POS BLACK WÜRTH: 609 002 134 21
13 1 S1 SW SLIDE DPDT 6VDC 0.3A PCMNT C&K: JS202011CQN
14 4 TP1, TP2, TP3, TP4 TERM SOLDER TURRET 0.219" 0.078"L MILL-MAX: 2501-2-00-80-00-00-07-0
15 1 U3 2k I2C SERIAL EEPROM MICROCHIP TECHNOLOGY: 24AA02T-I/OT
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DEMO MANUAL DC1508B
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
FIDUCIALS
2 1
LTC2977
LTC2978
LTC2978A
GREEN
(OPT)
(OPT) GNDGND GND GND
GND
CONN_DC1613
10.0K 10.0K
10.0K
10.0K
10.0K
10.0K
24AA02
GND
GNDGND
1.0uF
POWER
GND
1.30K
1.0uF
100nF
WP
GND
ASEL1
GND
GND
ASEL0
GND 100nF
GND
100nF
100nF
100nF
1.0uF
100nF
+5V +5V
+3V3 +3V3
+3V3
+3V3
GND GND
100nF
GND GND
100nF
GND GND
10.0K
GND
LTC2974
LTC2975 38
37
36
35
34
33
32
31
10
9
8
6
5
4
3
2
1
20
19
18
17
16
15
14
13
12
11
30
29
28
27
26
25
24
23
22
7
21
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
U2
38
37
36
35
34
33
32
31
10
9
8
6
5
4
3
2
1
20
19
18
17
16
15
14
13
12
11
30
29
28
27
26
25
24
23
22
7
21
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
U1
1
2
3
4
5
6
7
8
9
10
11
12
J1
R1 R2
R8R6
R5
R4
LED1
1
2
3 4
5
U3
C1
2
3
1
5
6
4
S1
R3
C2
C4
1
2
3
JP1
1
2
3
4
JP2
1
2
3
4
JP3
C5
C6
C9
C11
C7
C10
C8
C3
R7
GND
ALERTB
SCL SCL
SCL
SDA SDA
SDA
FAULTB_PU
WP
ASEL0
ASEL1
+5V
WDI/RESET
+5V_DONGLE
1 PRODUCTION MIKE P. 10-28-13
1. ALL RESISTORS ARE 1% 0603.
2. ALL CAPACITORS ARE 16V 0603
REFP
GND
VSENSEP0
VSENSEM0
VOUT_EN0
VOUT_EN1
VOUT_EN2
VOUT_EN3
DNC
VIN_SNS
VPWR
VDD33
VDD33
VDD25
VDD25
TSENSE0
TSENSE1
PWRGD
SHARE_CLK
GND
GND
GND
CONTROL3
WDI/RESETB
FAULTB0
REFM
FAULTB1
TSENSE2
WP
SDA
SCL
ALERTB
CONTROL0
CONTROL1
TSENSE3
ASEL0
ASEL1
AUXFAULTB
CONTROL2
GND
PAD
ISENSEM2
ISENSEP2
ISENSEM3
ISENSEP0
ISENSEM0
ISENSEP1
ISENSEM1
ISENSEP3
VDAC1
VDAC0
IIN_SNSM
VSENSEP3
VSENSEM3
VIN_SNS_CAP
GND/NC
IIN_SNSP
VSENSEM2
VSENSEP2
VSENSEM1
VDAC2
VDAC3
GND/NC
NC
VSENSEP1
CUSTOMER NOTICE
B
SCALE = NONE
LTC CONFIDENTIAL
FOR CUSTOMER
USE ONLY
PCB DES.
APP ENG. www.linear.com
-
VDACM0
VSENSEM0
VSENSEM6
VSENSEP7
VSENSEM7
VOUT_ENO
VOUT_EN1
VOUT_EN2
VOUT_EN4
VOUT_EN5
VOUT_EN6
VOUT_EN7
VIN_EN
DNC
VIN_SNS
VPWR
VDD33
VDD33
VDD25
WP
PWRGD
SHARE_CLK
FAULTB00
FAULTB01
FAULTB10
VDACP1
FAULTB11
SDA
SCL
ALERTB
ASEL0
CONTROL0
CONTROL1
ASEL1
REFP
REFM
VSENSEP0
VOUT_EN3
WDI/RESETB
VDACP0
PAD
VSENSEP2
VDACM2
VSENSEP3
VDACM1
VSENSEP1
VSENSEM1
VDACP2
VSENSEM2
VDACM4
VSENSEM4
VDACP5
VSENSEM3
VDACP3
VDACM3
VSENSEP4
VDACP4
VSENSEP5
VDACM7
VSENSEP6
VDACM5
VDACM6
VDACP6
VDACP7
VSENSEM5
+5V (100mA)
SDA
GND
SCL
+3.3V(100mA)
ALRTB
GPO_1
OUTEN
GPO_2
GND
AUXSCL
AUXSDA
SCL
GND
SDA VCC
WP
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DEMO MANUAL DC1508B
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 2014
LT 0514 • PRINTED IN USA
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. LT C 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 LT C applica-
tion engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
