µModule Regulators • DC/DC ICs • Manager ICs • Sequencers • Supervisors
DIGITAL POWER SYSTEM MANAGEMENT
✔✔
Digitally
Manage Point-of-Load (POL) Power Supplies
– Trim, Margin, Sequence, Supervise, Log Faults
– Monitor Voltage, Current, Power, Energy, and Temperature
✔✔
✔✔
✔✔
Increase Power System Reliability
Optimize Board Energy Consumption
Reduce Time to Market
Take Control of Your Power Supplies
Accelerate characterization and optimization during prototyping and field operation with Analog Devices' digital power
system management (PSM) products, configured and monitored via a PMBus/SMBus/I
2
C digital interface.
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2
Digital Power System Management
Digital Power System Management
Benefits
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±0.25% Voltage Accuracy
Products
– Power System Managers
– DC/DC Controllers with PSM
– Fully Integrated µModule
®
Regulators
LTpowerPlay GUI: Engineering-Level Development
Environment
®
POWER SYSTEM Any DC/DC Converter or
MANAGER
Linear Regulator
V
IN
PSM
n
+
DC/DC
Controller
L
O
A
D
DC/DC CONTROLLER WITH PSM
V
IN
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PMBus Compliant Commands Over I
2
C/SMBus Digital
Interface
EEPROM for Configuration and Black Box Fault Logging
Autonomous Operation—No Software Coding Required
Coordinate Sequencing and Fault Management Across
PSM Devices
Reduced BOM Cost and Validation Effort
LTpowerPlay
GUI
(Free Download)
PSM
+
DC/DC
Controller
L
O
A
D
n
µModule REGULATOR WITH PSM
V
IN
PSM
n
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+
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DC/DC
Controller
L
O
A
D
I
2
C/SMBus/PMBus
TO PMBus CONTROLLER AND
OTHER DEVICES
µModule Regulators, DC/DC Controllers and Monolithic Regulators
with Power System Management
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Fast Analog Feedback Loop with Digital Telemetry and Control
Program V
OUT
, I
LIM
, OV/UV Level, Frequency, Ramp Rate, Sequencing Time Delays, Margining
Read Back V
IN
, I
IN
, V
OUT
, I
OUT
, P
OUT
, Duty Cycle, Temperature, Faults
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PSM Switcher Selection Guide
µModule Regulators
Features
LTM
®
4676
LTM4676A
LTM4675
LTC
®
3880
LTC3880-1
LTC3882
PSM
Number of Outputs
PWM Control Mode
Start-Up Time (Typ)
Input Current Sense
V
OUT
Range (V)
V
IN
Range (V)
V
OUT
Accuracy (%)
I
OUT
(A) Max
Temperature Sensing
DCR Sensing
Dedicated PGOOD Pins
Gate Drivers
Three-State PWM Control
Digitally Adjustable Loop Compensation
On-Chip LDO from V
IN
Fast ADC Mode
Corresponding Slaves
Package (mm x mm)
* Depends on choice of external components
Full
2
Current
153
(170 Max)
Calibrated
0.5 to 4.0, ch0
0.5 to 5.4, ch1
4.5 to 26.5
1
Dual 13 or Single 26
ΔV
BE
NA
No
NA
NA
No
Yes
No
NA
16 x 16 x 5.01 BGA
Full
2
Current
60
(70 Max)
Calibrated
0.5 to 5.5
4.5 to 17
0.5
Dual 13 or Single 26
ΔV
BE
NA
No
NA
NA
No
Yes
Yes
NA
16 x 16 x 5.01 BGA
Full
2
Current
60
(70 Max)
Calibrated
0.5 to 5.5
4.5 to 17
0.5
Dual 9 or Single 18
ΔV
BE
NA
No
NA
NA
No
Yes
Yes
NA
11.9 x 16 x 3.51 BGA
Full
2
Current
145
Inferred
0.5 to 4.0, ch0
0.5 to 5.4, ch1
4.5 to 24
0.5
30/Phase*
ΔV
BE
Low
No
Yes
No
No
Yes
No
LTC3870
6 x 6 QFN-40
Full
2
Current
145
Inferred
0.5 to 4.0, ch0
0.5 to 5.4, ch1
4.5 to 24
0.5
30/Phase*
ΔV
BE
Low
No
Yes
No
No
No
No
LTC3870
6 x 6 QFN-40
Full
2
Voltage
70
No
0.5 to 5.3
3.0 to 38
0.5
40A/Phase*
ΔV
BE
and Direct
Ultralow
No
No
Yes
No
No
No
NA
6 x 6 QFN-40
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3
Power System Managers
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Manage Any Adjustable Point-of-Load Power Supply
Trim, Margin, Sequence, Supervise, Manage Faults, Monitor Telemetry, Record Fault Logs
Read Back Voltage, Current, Power, Energy, Temperature, and Faults
Input Energy
Temp
Sense
Internal
External
Digital
Interface
Trim/
Margin/
Monitor
Accuracy
EEPROM
Includes
Res/Cap
PMBus
SMBus
Sequencing
Cascade
Tracking
Bias Supply
n
n
Device
Voltage
Supply
Channels
Managed
1
Number
of Current
Sensed
Loads
Time
Package
(mm
×
mm)
Demo
Board
3.3V
LTC2970
2
LTC2972
LTC2974
LTC2975
LTC2977
LTC2979
LTC2980
LTM2987
2
2
4
4
8
16
16
16
2
3
4
5
•
•
•
•
•
•
•
•
•
•
2
4
4
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
±0.50 %
±0.25 %
±0.25 %
±0.25 %
±0.25 %
±0.50 %
±0.25 %
±0.25 %
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
12V
I
2
C
5V
•
•
•
•
•
•
•
4 x 5 QFN-24
6 x 7 QFN-44
9 x 9 QFN-64
9 x 9 QFN-64
9 x 9 QFN-64
12 x 12 BGA
12 x 12 BGA
15 x 15 BGA
DC980
DC2619
DC1978
DC2022
DC2028
DC2198
DC2023
1
A channel refers to the collection of functions that trims, supervises and monitors a given power supply rail.
2
See LTC2970-1 for sequencing.
Programmable 6-Channel Sequencer and Supervisors with EEPROM
Device
Sequencer/
Supervisor
Comparator
Outputs
Threshold Range
Threshold
Accuracy
Power Supply
Package
(mm × mm)
Demo Board
LTC2933
LTC2936
LTC2937
Supervisor
Supervisor
Both
No
Yes
No
1 V to 13.9 V (1×)
0.2 V to 5.8 V (5×)
0.2 V to 5.8 V (6×)
0.2 V to 6 V (6×)
±1 %
±1 %
±0.75 %
3.4 V to 13.9 V
3.13 V to 13.9 V
2.9 V to 16.5 V
5×4 DFN-16,
SSOP-16
4×5 QFN-24,
SSOP-24
5×6 QFN-28
DC1633
DC1605
DC2313
DC/DC Controllers
LTC3882-1
LTC3883
LTC3883-1
LTC3884
LTC3884-1
LTC3886
LTC3887
LTC3887-1
Monolithic
Regulators
LTC3815
Full
2
Voltage
70
No
0.5 to 5.3
3.0 to 38
0.5
40A/Phase*
ΔV
BE
and Direct
Ultralow
Yes
No
Yes
No
No
No
NA
6 x 6 QFN-40
Full
1
Current
145
Yes
0.5 to 5.4
4.5 to 24
0.5
30/Phase*
ΔV
BE
Low
Yes
Yes
No
No
Yes
No
LTC3870
5 x 5 QFN-32
Full
1
Current
145
Yes
0.5 to 5.4
4.5 to 24
0.5
30/Phase*
ΔV
BE
Low
Yes
Yes
No
No
No
No
LTC3870
5 x 5 QFN-32
Full
2
Current
65
Yes
0.5 to 5.4
4.5 to 38
0.5
30/Phase*
ΔV
BE
and Direct
Very Low
Yes
Yes
No
Yes
Yes
Yes
LTC3874
7 x 7 QFN-48
Full
2
Current
65
Yes
0.5 to 5.4
4.5 to 38
0.5
30/Phase*
ΔV
BE
and Direct
Very Low
Yes
No
Yes
Yes
Yes
Yes
LTC3874
7 x 7 QFN-48
Full
2
Current
65
Yes
0.5 to 13.2
4.5 to 60
0.5
30/Phase*
ΔV
BE
and Direct
Low
Yes
Yes
No
Yes
Yes
Yes
LTC3870
7 x 8 QFN-46
Full
2
Current
70
Inferred
0.5 to 5.5
4.5 to 24
0.5
30/Phase*
ΔV
BE
Low
No
Yes
No
No
Yes
Yes
LTC3870
6 x 6 QFN-40
Full
2
Current
70
Inferred
0.5 to 5.5
4.5 to 24
0.5
30/Phase*
ΔV
BE
Low
No
No
Yes
No
Yes
Yes
LTC3870
6 x 6 QFN-40
Partial
1
Current
<10
Yes
0.4 – 0.72 • V
IN
2.2 to 5.5
1
6A
Internal
NA
Yes
NA
NA
No
Yes
NA
NA
4 x 6 QFN-38
Hardware Support
A DC1613 USB-to-I
2
C/SMBus/PMBus controller (adapter) is
used to interface any PSM demo board to a computer. Every
PSM device comes with at least one specific demo board.
Some PSM demo boards can be cascaded together for
evaluating multiple rails.
To USB Port of
Computer Running
LTpowerPlay
12-Pin Ribbon Cable
to PSM Demo Board
If Needed, DC2086 Adapts
12-Pin Cable to 4-Pin Header
Software Support
LTpowerPlay is a powerful and intuitive Windows-based development environment used to configure and interrogate PSM devices. It 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 reloaded at a later
time. It is available as a free download at:
www.analog.com/LTpowerPlay
Device Programming
PSM devices ship from Analog Devices with a default register configuration loaded in EEPROM. The options to ship with a customized,
application-specific configuration developed during the prototyping phase are as follows:
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Analog Devices NVM Programming Service:
This involves submitting the configuration file, then receiving a few custom
programmed samples (First Articles) for verification and approval. Contact Linear Express:
express@analog.com
In-Circuit Programming:
Use LTpowerPlay on a computer with a DC1613 USB-to-PMBus controller (adapter) to program PSM devices on
circuit boards with pin headers accessing the PSM device.
JTAG Programming:
Use third-party programmers from Asset Intertech or JTAG Technologies to program PSM devices on circuit boards
connected to JTAG scan chains without needing additional programmers or pin headers.
1.
Obtain the PSM Starter Kit,
DC1962C-KIT
2.
Download
LTpowerPlay
3.
Watch the
Video
Scan to watch video:
http://ltpowerplay.com/ps1full
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n
Getting Started
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Worldwide Headquarters
Analog Devices, Inc.
One Technology Way
P.O. Box 9106
Norwood, MA 02062-9106
U.S.A.
Tel: 781.329.4700
(800.262.5643, U.S.A. only)
Fax: 781.461.3113
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Germany
Tel: 49.89.76903.0
Fax: 49.89.76903.157
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Japan Headquarters
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New Pier Takeshiba
South Tower Building
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Tokyo, 105-6891
Japan
Tel: 813.5402.8200
Fax: 813.5402.1064
Analog Devices, Inc.
Asia Pacific Headquarters
Analog Devices
5F, Sandhill Plaza
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Zhangjiang Hi-Tech Park
Pudong New District
Shanghai, China 201203
Tel: 86.21.2320.8000
Fax: 86.21.2320.8222
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registered trademarks are the property of their respective owners.
Ahead of What’s Possible is a trademark of Analog Devices.
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