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www.ti.com/pmbus 4Q 2015
PMBus Power Solution Guide
For Power Supply Configuration, Control and Monitoring
Overview
The industry-standard PMBus protocol facilitates communication with power converters and other devices in a power system.
Using PMBus can increase power density and reliability of power supplies and optimize component performance and efficiency
with reduced design time, risk and cost. TI enables complete industry-standard PMBus power supply designs with a broad portfolio
of power protection/monitors, isolated PWM controllers, point-of-load single-/multi-output and single-/multi-phase PWM controllers,
and DC/DC converters.
TI PMBus Solution Benefits:
• Optimize power density by reading back actual current draw
and re-adjusting power stage components.
• Increase overall reliability and reduce total solution cost by
integrating components and optimizing the power stage
design based on actual power draw.
• Reduce design time by margining, programming, and
verifying the new design values with the PMBus GUI to
dramatically reduce development and validation phase for
new designs.
• Minimize risk by optimizing future designs through field
power consumption data collection and making appropriate
value adjustments via the PMBus GUI.
PMBus Power Chain
Integrated FET
Converters
with PMBus
TPS53915: 12A
TPS544B/C20/25:
20A/30A
NexFET™
Power Block
CSD87350Q5D
NexFET
Power Block
CSD87350Q5D
NexFET
Power Block
CSD95372A/
CSD95378B
NexFET
Power Stage
CSD95378B
Synchronous
Rectifiers
2x CSD17311Q5
V
CC
Bias Rail
PMBus non-PMBus
V
CC
Bias Rail
FETs
Isolation Transformers
POL DC/DC
POL Rails
+12V
Hot Swap
and
Monitoring
LM25066Ai
3.3V Bias Rail
Dual
FET Driver
UCC27524
LM5110
Bridge
FET Drivers
UCC27210
LM5101, LM5113
Bias Supply
UCC25230
LM5017
Digital Isolated
DC/DC Controller
with PMBus
UCD3138
Precision
NodeManager
©
Protection and
Monitoring
LM5064, LM5066i
Hot Swap
Sequencer
UCD90160/120A/124A/81
90/910/90240
Sequencers
Up to 24 rails
+
48Vdc IN
–
PMBus Controllers
with PMBus
TPS40400
TPS53819A
Single-Output
Single-Phase
TPS40422
Dual-Output
Dual-Phase
TPS40425/8
Dual-Out
Dual-Phase
Stackable x2
TPS53647
4-Phase Driverless
PWM
Isolated DC/DC
+12Vdc
Intermediate Bus
