DIGITAL POWER SYSTEM MANAGEMENT
µModule Regulators • DC/DC ICs • Manager ICs • Sequencers • Supervisors
✔✔ 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/I2C digital interface.
Visit analog.com
2
Digital Power System Management
Digital Power System Management
POWER SYSTEM Any DC/DC Converter or
MANAGER
Linear Regulator
VIN
Benefits
±0.25% Voltage Accuracy
n
Products
– Power System Managers
– DC/DC Controllers with PSM
– Fully Integrated µModule® Regulators
n
PSM
+
DC/DC
Controller
DC/DC CONTROLLER WITH PSM
LTpowerPlay ® GUI: Engineering-Level Development
Environment
L
O
A
D
VIN
n
PSM
PMBus Compliant Commands Over I2C/SMBus Digital
Interface
n
EEPROM for Configuration and Black Box Fault Logging
n
+
DC/DC
Controller
L
O
A
D
µModule REGULATOR WITH PSM
Autonomous Operation—No Software Coding Required
VIN
n
Coordinate Sequencing and Fault Management Across
PSM Devices
n
PSM
Reduced BOM Cost and Validation Effort
n
LTpowerPlay
GUI
(Free Download)
I2C/SMBus/PMBus
+
DC/DC
Controller
L
O
A
D
TO PMBus CONTROLLER AND
OTHER DEVICES
µModule Regulators, DC/DC Controllers and Monolithic Regulators
with Power System Management
Fast Analog Feedback Loop with Digital Telemetry and Control
n
Program VOUT, ILIM, OV/UV Level, Frequency, Ramp Rate, Sequencing Time Delays, Margining
n
Read Back VIN, IIN, VOUT, IOUT, POUT, Duty Cycle, Temperature, Faults
n
PSM Switcher Selection Guide
µModule Regulators
®
LTM 4676
LTM4676A
LTM4675
LTC ®3880
LTC3880-1
LTC3882
Full
Full
Full
Full
Full
Full
Number of Outputs
2
2
2
2
2
2
PWM Control Mode
Current
Current
Current
Current
Current
Voltage
Start-Up Time (Typ)
153
(170 Max)
60
(70 Max)
60
(70 Max)
145
145
70
Calibrated
Calibrated
Calibrated
Inferred
Inferred
No
0.5 to 4.0, ch0
0.5 to 5.4, ch1
0.5 to 5.3
3.0 to 38
Features
PSM
Input Current Sense
VOUT Range (V)
V IN Range (V)
VOUT Accuracy (%)
IOUT (A) Max
Temperature Sensing
0.5 to 4.0, ch0
0.5 to 5.4, ch1
0.5 to 5.5
0.5 to 5.5
0.5 to 4.0, ch0
0.5 to 5.4, ch1
4.5 to 26.5
4.5 to 17
4.5 to 17
4.5 to 24
4.5 to 24
1
0.5
0.5
0.5
0.5
0.5
Dual 13 or Single 26
Dual 13 or Single 26
Dual 9 or Single 18
30/Phase*
30/Phase*
40A/Phase*
ΔV BE
ΔV BE
ΔV BE
ΔV BE
ΔV BE
ΔV BE and Direct
DCR Sensing
NA
NA
NA
Low
Low
Ultralow
Dedicated PGOOD Pins
No
No
No
No
No
No
Gate Drivers
NA
NA
NA
Yes
Yes
No
Three-State PWM Control
NA
NA
NA
No
No
Yes
Digitally Adjustable Loop Compensation
No
No
No
No
No
No
On-Chip LDO from V IN
Yes
Yes
Yes
Yes
No
No
Fast ADC Mode
No
Yes
Yes
No
No
No
Corresponding Slaves
NA
NA
NA
LTC3870
LTC3870
NA
Package (mm x mm)
16 x 16 x 5.01 BGA
16 x 16 x 5.01 BGA
11.9 x 16 x 3.51 BGA
6 x 6 QFN-40
6 x 6 QFN-40
6 x 6 QFN-40
* Depends on choice of external components
Visit analog.com
Power System Managers
Manage Any Adjustable Point-of-Load Power Supply
n
Trim, Margin, Sequence, Supervise, Manage Faults, Monitor Telemetry, Record Fault Logs
n
Read Back Voltage, Current, Power, Energy, Temperature, and Faults
n
LTC2977
8
•
•
4 x 5 QFN-24
DC980
2
•
•
•
•
±0.25 %
•
•
•
•
•
•
6 x 7 QFN-44
DC2619
•
4
•
•
•
•
±0.25 %
•
•
•
•
•
•
9 x 9 QFN-64
DC1978
•
4
•
•
•
•
±0.25 %
•
•
•
•
•
•
9 x 9 QFN-64
DC2022
•
•
•
•
±0.25 %
•
•
•
•
•
9 x 9 QFN-64
DC2028
•
•
•
Trim/
Margin/
Monitor
Accuracy
±0.50 %
Package
(mm × mm)
12V
Includes
Res/Cap
•
•
EEPROM
•
•
I2C
5V
5
3.3V
4
4
Tracking
4
LTC2975
Cascade
LTC2974
Time
3
SMBus
2
2
PMBus
2
LTC2972
Bias Supply
External
LTC2970 2
Sequencing
Internal
Number
of Current
Sensed
Loads
Digital
Interface
Input Energy
Device
Voltage
Supply
Channels
Managed 1
Temp
Sense
Demo
Board
LTC2979
16
•
•
•
•
•
±0.50 %
•
•
•
LTC2980
16
•
•
•
•
•
±0.25 %
•
•
•
•
•
12 x 12 BGA
DC2198
LTM2987
16
•
•
•
•
•
±0.25 %
•
•
•
•
•
15 x 15 BGA
DC2023
•
12 x 12 BGA
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
Supervisor
No
1 V to 13.9 V (1×)
0.2 V to 5.8 V (5×)
LTC2936
Supervisor
Yes
0.2 V to 5.8 V (6×)
±1 %
3.13 V to 13.9 V
4×5 QFN-24,
SSOP-24
DC1605
LTC2937
Both
No
0.2 V to 6 V (6×)
±0.75 %
2.9 V to 16.5 V
5×6 QFN-28
DC2313
±1 %
3.4 V to 13.9 V
5×4 DFN-16,
SSOP-16
DC1633
Monolithic
Regulators
DC/DC Controllers
LTC3882-1
LTC3883
LTC3883-1
LTC3884
LTC3884-1
LTC3886
LTC3887
LTC3887-1
LTC3815
Full
Full
Full
Full
Full
Full
Full
Full
Partial
2
1
1
2
2
2
2
2
1
Voltage
Current
Current
Current
Current
Current
Current
Current
Current
70
145
145
65
65
65
70
70
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