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Solutions Search - Power System Management (PSM)

 

What is PSM?

Linear Technology’s Power System Management (PSM) devices add digital PMBus/SMBus/I2C-interface based control, telemetry and black-box fault recording to analog DC/DC power converters, providing the following high level capabilities to your power system:

  • Software management of power supplies
  • Digital monitoring and data-logging of voltage, current, power and temperature
  • Trimming, margining, sequencing, supervision, fault-logging/management of multiple point-of-load supplies
  • On-the-fly adjustment of configuration parameters
  • Remote supervision and command of power system
What is PSM

Why Use PSM?

System Level Benefits

  • Energy Consumption: Monitor and predict energy use vs system load/traffic. Optimize performance vs energy consumed with power domains, load shedding and tweaking supply voltages.
  • Reliability: Improve board reliability by precise control of power supplies over time and temperature, continuous monitoring and correlating board failure to EEPROM fault logs (black-box recorder).
  • Predict Failures: Avoid failures by monitoring board health in real-time to predict board aging and replacement.
  • Maintenance: Provide power system field upgrades via firmware, and control power system remotely.

Design Level Benefits

  • PSM brings the software model of rapid prototyping and tweaking to hardware.
  • Easily trim, margin, sequence, supervise, fault-log/manage and monitor multiple rails with one product.
  • Margin boards to improve reliability, increase yield and test FPGA timing.
  • Improve time-to-market by avoiding costly board re-spins.
  • Get complete access to board level diagnostics.
  • Replace discrete circuitry with space-saving integrated solution.

Benefits of Linear Technology PSM

Linear Technology’s Power System Management products offer cutting edge features such as:

  • A complete, ready-to-use solution architected by power supply experts, using the industry standard PMBus digital interface.
  • Trim, margin and monitor supply outputs to ±0.25% accuracy, guaranteed over temperature.
  • Breadth of products for a comprehensive portfolio (more information under PSM Product Types):
  • LTpowerPlay GUI: Engineering level development environment with remote debug capability and integrated help. Eliminates code development.
  • PMBus compliant commands over I2C/SMBus digital interface.
  • Autonomous Operation: No software coding required.
  • Coordinated sequencing and fault management across devices.

Getting Started

  1. Obtain the PSM Starter Kit DC1962C-KIT.
  2. Download LTpowerPlay.
  3. Watch this video to get started
PSM Starter Kit

Linear Technology PSM Product Types

There are two PSM product types:

  • Power System Managers: These devices manage any adjustable point-of-load (POL) supply with enable and trim capability, be it a switching regulator or a linear regulator (LDO). Keep your existing power system while adding capabilities such as trimming (to ±0.25% accuracy), margining, sequencing, fault logging and telemetry (reading VIN, VOUT, IOUT, temperature, faults).     
  • DC/DC Converters with Power System Management: These ICs or µModule devices feature a fast analog loop for DC/DC conversion with digital telemetry and control. Programmable parameters include VOUT, ILIM, OV/UV levels, frequency, ramp rate, sequencing time delays and margining. Readable parameters include VIN, IIN, VOUT, IOUT, POUT, duty cycle, temperature and faults.
PSM Product Types

DC2454A - LTC3887EUJ-1/LTC3870EUF-1 Demo Board | Dual Phase PMBus Buck Controller with Slave Controller, 7V ≤ VIN ≤ 14V, 0.8V ≤ VOUT ≤ 1.8V @ 100A

Dec 19th 2016
Demonstration circuit 2454A is a high current, high efficiency, poly-phase synchronous buck converter featuring the LTC®3887EUJ-1, a dual-phase current mode controller, and the LTC3870EUF-1, a dual-phase slave controller. The LTC3887-1 has the PMBus interface and the power system management functions. ...

Demo Board 

 

DC1989B-C - LTM4676A Demo Board | LTM4676A(x4) Current Shared, PMBus Buck uModule, 4.5V ≤ VIN ≤ 17V, Vout = 0.5V to 4V @ 100A

Oct 18th 2016
Demonstration circuit 1989B-C is a high efficiency, high density, μModule regulator with 4.5V to 17V input range. The output voltage is adjustable from 0.5V to 4V, and it can supply 100A maximum load current. The demo board has four LTM®4676A μModule regulators. The LTM4676A is a dual 13A or single 26A step-down regulator ...

Demo Board 

 

DC1989B-B - LTM4676A Demo Board | LTM4676A(x3) Current Shared, PMBus Buck uModule, 4.5V ≤ VIN ≤ 17V, Vout = 0.5V to 4V @ 75A

Oct 13th 2016
Demonstration circuit 1989B-B is a high efficiency, high density, μModule regulator with 4.5V to 17V input range. The output voltage is adjustable from 0.5V to 4V, and it can supply 75A maximum load current. The demo board has three LTM®4676A μModule regulators, and the LTM4676A is a dual 13A or single 26A step-down ...

Demo Board 

 

DC1989B-A - LTM4676A Demo Board | LTM4676A(x2) Current Shared, PMBus Buck uModule, 4.5V ≤ VIN ≤ 17V, Vout = 0.5V to 4V @ 50A

Oct 13th 2016
Demonstration circuit 1989B-A is a high efficiency, high density, μModule regulator with 4.5V to 17V input range. The output voltage is adjustable from 0.5V to 4V, and it can supply 50A maximum load current. The demo board has two LTM®4676A μModule regulators, and the LTM4676A is a dual 13A or single 26A step-down ...

Demo Board 

 

DC2084A - LTC3884EUK/LTC3874EUFD Demo Board | PolyPhase Digital PSM Buck with Sub-mΩ DCR Sensing Plus Two Slave Controllers, 10V ≤ VIN ≤ 14V, Vout = 0.5V to 1.5V @ 240A

Aug 25th 2016
Demonstration circuit 2084A is a high efficiency, high density, single-output step-down solution featuring the LTC3884 and two LTC3874's. The LTC3884 is a dual output PolyPhase® step-down controller with ultralow DCR sensing and digital power system management. The LTC3874 is a PolyPhase step-down synchronous slave ...

Demo Board LTpowerCAD 

 

DC2481A-A - LTM4677/LTM4650 Demo Board | Buck μModule Regulator with Digital PSM, LTM4677 + LTM4650, 4.5V ≤ VIN ≤ 16V, Vout = 0.5V to 1.8V @ 86A

Jun 29th 2016
Demonstration circuit 2481A-A is a high efficiency, high density, μModule® regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V, and it can supply 86A maximum load current. The demo board has 1× LTM®4677 and 1× LTM4650 μModule regulators. The LTM4677 is a dual 18A ...

Demo Board LTspice 

 

DC2481A-B - LTM4677/LTM4650 Demo Board | Buck μModule Regulator with Digital PSM, LTM4677 + LTM4650(x3), 4.5V ≤ VIN ≤ 16V, Vout = 0.5V to 1.8V @ 186A

Jun 29th 2016
Demonstration circuit 2481A-B is a high efficiency, high density, μModule® regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V, and it can supply 186A maximum load current. The demo board has 1× LTM®4677 and 3× LTM4650 μModule regulators. The LTM4677 is a dual ...

Demo Board LTspice 

 

DC2155A-B - LTC3886UKG/LTC3870UFD Demo Board (RSENSE) | 4 Phase Single Output PMBus Buck 18V≤VIN ≤54V, VOUT=12V at 48A, 150kHz

Jun 3rd 2016
Demonstration circuit 2155A is available in two configurations. The DC2155A-A is a dual output synchronous step-down converter featuring the LTC®3886IUKG, a dual-phase current mode controller. The DC2155A-B is a single output synchronous step-down converter that operates with four phases: two from the LTC3886IUKG and two ...

Demo Board LTpowerPlay 

 

DC2143A-C - LTM4677 Demo Board | μModule PMBus Buck, LTM4677(x4), 4.5V ≤ VIN ≤ 16V, Vout = 0.5V to 1.8V @ 144A

May 27th 2016
Demonstration circuit 2143A-C is a high efficiency, high density, μModule regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V, and it can supply 144A maximum load current. The demo board has four LTM®4677 μModule® regulators, and the LTM4677 is a dual 18A or single 36A step-down ...

Demo Board LTspice 

 

DC2143A-B - LTM4677 Demo Board | μModule PMBus Buck, LTM4677(x3), 4.5V ≤ VIN ≤ 16V, Vout = 0.5V to 1.8V @ 108A

May 27th 2016
Demonstration circuit 2143A-B is a high efficiency, high density, μModule regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V, and it can supply 108A maximum load current. The demo board has three LTM®4677 μModule® regulators, and the LTM4677 is a dual 18A or single 36A step-down ...

Demo Board LTspice 

 

DC2283A - LTC3884EUK Demo Board | LTC3884(x2) 4-Phase PMBus Buck, 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT ≤ 1.5V @ 160A

Apr 27th 2016
Demonstration circuit 2283A is a high efficiency, high density, single-output Buck converter with 7V to 14V input range. The output voltage is adjustable from 0.5V to 1.5V, and can supply up to 160A of load current with a 1V output. The demo board offers the option to be configured as a dual-output converter, contact factory ...

Demo Board 

 

DC2291A - LTC3882EUJ Demo Board │LTC3882 (x2) 4-Phase PMBus Buck , 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT ≤ 2V @ 140A

Apr 25th 2016
Demonstration circuit 2291A is a high current, high efficiency, PolyPhase® synchronous buck converter featuring the LTC®3882EUJ, a dual output voltage mode controller. This demo board incorporates two LTC3882 controllers which provide four phases to deliver up to 140A. The default output voltage is 1V and can be adjusted ...

Demo Board 

 

DC2143A-A - LTM4677 Demo Board | 2x LTM4677 Buck μModule with Digital PSM, 4.5V ≤ VIN ≤ 20V, Vout = 0.5V to 1.8V @ 72A

Mar 25th 2016
Demonstration circuit 2143A-A is a high efficiency, high density, μModule® regulator with 4.5V to 16V input range. The demo board has two LTM®4677 μModule regulators, and the LTM4677 is a dual 18A or single 36A step-down regulator with PMBus power system management. The demo board output voltage is adjustable from ...

Demo Board LTspice 

 

DC2155A-A - LTC3886UKG Demo Board (RSENSE) Dual Phase Dual Output PMBus Buck 18V≤VIN≤54V, VOUT0/VOUT1=5V to 12V at 12A per channel, 150kHz

Feb 12th 2016
Demonstration circuit 2155A is available in two configurations. The DC2155A-A is a dual output synchronous step-down converter featuring the LTC®3886IUKG, a dual-phase current mode controller. The DC2155A-B is a single output synchronous step-down converter that operates with four phases: two from the LTC3886IUKG and two ...

Demo Board LTpowerPlay LTspice 

 

DC2312A-B - LTC3882EUJ-1 Demo Board | Voltage Mode PMBus Buck, 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT ≤ 2V @ Up to 70A

Feb 8th 2016
Demonstration circuit 2312A is a high current, high efficiency, dual phase synchronous buck converter featuring the LTC3882EUJ-1, a dual output voltage mode controller with the additional features of differential VOUT sense and dedicated PGOOD output on both channels, compared to LTC3882. The LTC3882-1 has the PMBus interface ...

Demo Board 

 

DC2312A-A - LTC3882EUJ-1 Demo Board | Dual Voltage Mode PMBus Buck, 7V ≤ VIN ≤ 14V; VOUT0/VOUT1 = 0.5V to 2V @ Up to 35A

Feb 8th 2016
Demonstration circuit 2312A is a high current, high efficiency, dual phase synchronous buck converter featuring the LTC3882EUJ-1, a dual output voltage mode controller with the additional features of differential VOUT sense and dedicated PGOOD output on both channels, compared to LTC3882. The LTC3882-1 has the PMBus interface ...

Demo Board 

 

DC2394A - LTC3887EUJ-1 Demo Board (DCR Sense) | PMBus Buck with DrMOS, 7V ≤ VIN ≤ 14V, Vout0/Vout1 = 0.8V to 1.8V @ 30A

Jan 22nd 2016
Demonstration circuit 2394A is a high current, high efficiency, dual output PolyPhase® synchronous buck converter featuring the LTC®3887EUJ-1, a dual-phase current mode controller. The LTC3887-1 has the PMBus interface and the power system management functions. ...

Demo Board LTpowerPlay 

 

DC2165A - LTC3884EUK Demo Board | Dual PMBus Buck, 4.5V ≤ Vin ≤ 14V, Vout0/Vout1 = 0.5V to 1.8V @ 30A

Dec 4th 2015
LTC3884EUK Demo Board | Dual PMBus Buck, 4.5V ≤ Vin ≤ 14V, Vout0/Vout1 = 0.5V to 1.8V @ 30ADemonstration circuit 2165A is a high efficiency, high density, dual-output buck converter with a 4.5V to 14V input range. The output voltage is adjustable from 0.5V to 5.5V, and each output can supply up to 30A of load current when ...

Demo Board LTpowerPlay 

 

DC2065A - LTC3815EUFE Demo Board | PMBus Buck, 2.25V ≤ VIN ≤ 5.5V; VOUT Range: 0.4 V to 0.72VIN @ 6A

Aug 26th 2015
Demonstration circuit 2065A is a synchronous buck converter using the LTC®3815EUFE, a 6A monolithic buck regulator with power system management. The LTC3815 has the PMBus compliant serial interface and features, such as programmable output voltage margining, temperature monitoring, current and voltage read back, and fault ...

Demo Board 

 

DC2263A-B - LTC3887EUJ Demo Board (DCR SENSE) | 2 Phase PMBus Buck, 7V ≤ VIN ≤ 18V, Vout = 0.8V to 1.8V @ 50A

Aug 14th 2015
Demonstration circuit 2263A is a high current, high efficiency, dual output/polyphase synchronous buck converter featuring the LTC®3887EUJ, a dual-phase current mode controller. The LTC3887 has the PMBus interface and the power system management functions. The DC2263A uses discrete MOSFETs in the power stage. The input ...

Demo Board Linduino LTpowerCAD LTpowerPlay 

 

DC2263A-A - LTC3887EUJ Demo Board (RSENSE) | Dual PMBus Buck, 7V ≤ VIN ≤ 18V, Vout0/Vout1 = 0.8V to 1.8V @ 25A

Aug 14th 2015
Demonstration circuit 2263A is a high current, high efficiency, dual output/polyphase synchronous buck converter featuring the LTC®3887EUJ, a dual-phase current mode controller. The LTC3887 has the PMBus interface and the power system management functions. The DC2263A uses discrete MOSFETs in the power stage. The input ...

Demo Board Linduino LTpowerCAD LTpowerPlay 

 

LTM4675 18A, 1.5V Output DC/DC μModule Regulator with I2C/SMBus/PMBus Serial Interface

Jul 15th 2015
The LTM®4675 is a dual 9A or single 18A step-down μModule® (micromodule) DC/DC regulator with 70ms turn-on time. It features remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I2C-based digital interface protocol . The LTM4675 is comprised of fast analog ...

Circuit 

 

Four Paralleled LTM4675 Producing 1Vout at Up to 70A with PMBus

Jul 15th 2015
The LTM®4675 is a dual 9A or single 18A step-down μModule® (micromodule) DC/DC regulator with 70ms turn-on time. It features remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I2C-based digital interface protocol . The LTM4675 is comprised of fast analog ...

Circuit LTspice 

 

LTM4675 uModule 12Vin, 1Vout at up 122A with PMBus

Jul 15th 2015
The LTM®4675 is a dual 9A or single 18A step-down μModule® (micromodule) DC/DC regulator with 70ms turn-on time. It features remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I2C-based digital interface protocol . The LTM4675 is comprised of fast analog ...

Circuit 

 

LTM4675 18A, 5V Output DC/DC μModule Regulator with Serial Interface/PMBus

Jul 15th 2015
The LTM®4675 is a dual 9A or single 18A step-down μModule® (micromodule) DC/DC regulator with 70ms turn-on time. It features remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I2C-based digital interface protocol . The LTM4675 is comprised of fast analog ...

Circuit 

 

LTM4675 9A, 1V and 9A, 1.8V Output DC/DC μModule Regulator with Serial Interface/PMBus

Jul 15th 2015
The LTM®4675 is a dual 9A or single 18A step-down μModule® (micromodule) DC/DC regulator with 70ms turn-on time. It features remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I2C-based digital interface protocol . The LTM4675 is comprised of fast analog ...

Circuit 

 

DC1811B-B - LTM4676A Demo Board | Step-Down μModule Regulator with PMBus, 4.5V ≤ VIN ≤ 17V, Vout0 = 1V @ 13A, Vout1 = 1.8V @ 13A

Jun 11th 2015
Demonstration circuit 1811B-B is a dual-output, high efficiency, high density, μModule® regulator with 4.5V to 17V input range. Each output can supply 13A maximum load current. The demo board has a LTM®4676A μModule regulator, which is a dual 13A or single 26A step-down regulator with PMBus power system management. ...

Demo Board LTpowerCAD LTpowerPlay 

 

DC2269A-A - LTM4676 Plug-In Demo Board | 1.5"x1.2" with Edge Connector, Dual 13A Buck μModule with PMBus, 4.5V ≤ VIN ≤ 26.5V, Vout0 = 1V @ 13A, Vout1 = 1.8V @ 13A

May 18th 2015
Demonstration circuit 2269A-A is a dual-output, high efficiency, high density, μModule® supply on a small 1.5"×1.2" PCB board with 4.5V to 26.5V input range. Each output can supply 13A maximum load current. The demo board has a LTM®4676 μModule regulator, which is a dual 13A or single 26A step-down regulator ...

Demo Board LTpowerPlay 

 

DC2174A-A - LTC3882EUJ Demo Board | 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT0 ≤ 2V @ 35A, 0.5V ≤ VOUT1 ≤ 2V @ 35A

Apr 17th 2015
Demonstration circuit 2174A-A is a high current, high efficiency, dual-phase dual-output synchronous buck converter featuring the LTC®3882EUJ, a dual output voltage mode controller. The DC2174A-A operates with a 7V to 14V input voltage and is configured for 1.5V at 35A and 1V at 35A. The output voltage adjustment range is ...

Demo Board LTpowerPlay 

 

DC1936A - LTC3882EUJ Demo Board | Dual Buck Voltage Mode Controller with PSM, 7V ≤ VIN ≤ 14V; 0.8V ≤ VOUT0 ≤ 1.8V @ 30A, 0.8V ≤ VOUT1 ≤ 1.8V @ 30A

Feb 6th 2015
Demonstration circuit 1936A is a high current, high efficiency, polyphase synchronous buck converter featuring the LTC3882EUJ, a dual output polyphase voltage mode controller. The LTC3882 has the PMBus interface and power system management functions. The DC1936A uses 6mm × 6mm DrMOS as the power stage. The input range ...

Demo Board Linduino LTpowerCAD LTpowerPlay 

 

Guide To Ordering LTC's Custom-Programmed EEPROM Devices

Bruce Haug - Product Marketing Engineer Sep 11th 2014
Click Here To Order Custom Programmed Parts Welcome to Linear Technology’s NVM (Non-Volatile Memory) Programming Service video product brief tutorial for Digital Power System's Management Products. This tutorial will go through the process of ordering custom-programmed first articles or prototypes. Devices eligible ...

Video LTpowerPlay 

 

DC2089A-B - LTC3880EUJ/LTC3870EUFD DCR SENSE Demo Board | 7V ≤ VIN ≤ 14V; VOUT = 0.8V to 1.8V @ 80A

Sep 10th 2014
Demonstration circuit 2089A is a high current, high efficiency, poly-phase synchronous buck converter featuring the LTC®3880EUJ, a dual-phase current mode controller, and the LTC3870EUFD, a dual-phase slave controller. The LTC3880 has the PMBus interface and power system management functions. The input range of this board ...

Demo Board LTpowerPlay 

 

DC2089A-A - LTC3880EUJ/LTC3870EUFD RSENSE Demo Board | 7V ≤ VIN ≤ 14V; VOUT = 0.8V to 1.8V @ 80A

Sep 10th 2014
Demonstration circuit 2089A is a high current, high efficiency, poly-phase synchronous buck converter featuring the LTC®3880EUJ, a dual-phase current mode controller, and the LTC3870EUFD, a dual-phase slave controller. The LTC3880 has the PMBus interface and power system management functions. The input range of this board ...

Demo Board LTpowerCAD LTpowerPlay 

 

Dual 13A μModule Regulator with Digital Interface for Remote Monitoring & Control of Power

Jan 15th 2014
Digital Power System Management: Set, Monitor, Change and Log Power Managing power and implementing flexibility in a high rail count circuit board can be challenging, requiring hands-on probing with digital voltmeters and oscilloscopes, and often rework of PCB components. To simplify power management, especially from a remote ...

Blog Post LTpowerPlay LTspice 

 

DC2088A - LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT Range: 0.8V to 1.8V @ Up to 50A

Jan 11th 2014
Demonstration circuit 2088A is a high current, high density, two-phase single output synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller. The LTC®3880 has the PMBus interface and power system management functions. ...

Demo Board LTpowerPlay 

 

What Is Digital Power System Management?

Afshin Odabaee - Business Manager - uModule Power Products Nov 4th 2013
Power management of a high rail count circuit board can be very difficult with meters and oscilloscopes. There is a growing trend to configure and monitor power supplies over a digital communications bus. “Digital Power” or “Digital Power System Management (PSM)” allows systems designers to simplify and ...

Video LTpowerPlay 

 

PMBus Spec Working Group Issues Version 1.3 For Review

Michael Jones - Applications Engineer Sep 26th 2013
The PMBus Specification Working Group has released the PMBus 1.3 specification proposal for adopter review. The updated specification adds features and improves performance of PMBus 1.2 and adds AVS Bus (Part III). If the Working Group achieves its goals, the new specification will complete its review process and be approved ...

Blog Post LTpowerPlay 

 

DC1740A-B - LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 20A, VOUT1: 0.5V to 4.1V @ 60A, PMBus Controlled, works w/ DC1613

Sep 10th 2013
Demonstration circuit 1740A is a PolyPhase® synchronous buck converter featuring the LTC®3880EUJ, a dual-phase current mode controller with PMBus interface and digital power system management functions. The DC1740A-B is a two chip 3 + 1 phase dual-output configuration. The default output settings are VOUT0 = 1.5V/20A ...

Demo Board LTpowerPlay 

 

Fault Management Architecture

Michael Jones - Applications Engineer Jul 11th 2013
I recently had some enquiries into using PMBus communication to manage faults vs. built-in fault management. The question was two fold: what is the impact of using PMBus to make fault-off decisions, and what can be done to build system wide fault logs? Before I dig into these two uses of PMBus, let’s consider what is ...

Blog Post LTpowerPlay 

 

DC2052A - LTC3880EUJ/LTC3883EUH, 3-Phase Demo Board, Vin Range: 6.5V to 14V, Vout Range: 0.5V to 1.8V @ 60A, PMBus Controlled, works w/ DC1613 Dongle

Jun 28th 2013
Demonstration circuit 2052A is a 3-phase single output synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller, and the LTC3883EUH, a single-phase current mode controller with input current sensing capability. Both devices have a PMBus interface and the power system management functions. The ...

Demo Board LTpowerPlay 

 

Digital Loops Are Not the Same as Analog Loops

Michael Jones - Applications Engineer Apr 10th 2013
I recently heard a claim that at the output of a power converter, digital and analog loop are the same. The claim went like this: “a power supply using digital power control techniques will appear identical to the end user as a power supply using analog power control techniques.” This reminds me of the classic ...

Blog Post LTpowerPlay 

 

LTC2974 Demonstration Video

Mar 13th 2013
The LTC2974 is a quad, digital power-supply monitor, supervisor, sequencer, and margin controller. Supervisory functions include over and under threshold limits for current, voltage and temperature on four output channels as well as OV/UV threshold limits for a single input channel. Programmable fault response allows the power ...

Video LTpowerPlay 

 

LTC2974 Quad Power System Manager with EEPROM (Digital Power Manager) Video Product Brief

Chris Gobok - Product Marketing Engineer Jan 22nd 2013
The LTC®2974 is a quad, digital power-supply monitor, supervisor, sequencer, and margin controller. Supervisory functions include over and under threshold limits for current, voltage and temperature on four output channels as well as OV/UV threshold limits for a single input channel. Programmable fault response allows the power ...

Video LTpowerPlay 

 

Digital Power: Why Should I Care About Accuracy?

Michael Jones - Applications Engineer Dec 17th 2012
We looked at why we care about the digital side of Digital Power in the last post, but what about the analog side of digital power? Does the accuracy at the other end of the Digital Power device matter? It turns out, it matters more than most people realize. An example error budget Let’s use an actual IC specification ...

Blog Post LTpowerPlay 

 

Digital Power: Why Should I Care About Integration?

Michael Jones - Applications Engineer Dec 4th 2012
You have seen how Digital Power allows rails to work as a team, and how tools enable configuration and debug. Now it is time to step back and look at how Digital Power fits into a system. In particular, how Digital Power integrates with Board Controllers defined by industry standards. Why should we care about standards? In ...

Blog Post LTpowerPlay 

 

DC1753A-A - LTC3880EUJ Demo Board (RSENSE) | Dual Phase Single Output, PMBus Buck, 6.5V ≤ VIN ≤ 24V, Vout = 0.5V to 3.3V @ 40A

Oct 31st 2012
Demonstration circuit 1753A is a dual phase single-output, synchronous buck converter featuring the LTC®3880EUJ, a dual phase current mode controller with digital power management. The DC1753A-A senses inductor current across a sense resistor. Default switching Freq = 350kHz. The demo board can be populated with the LTC3880EUJ-1, ...

Demo Board LTpowerCAD LTpowerPlay 

 

Single Phase Step-Down DC/DC Controller with Digital Power System Management and Input Current Sense

Yi Sun - Applications Engineer Oct 4th 2012
The digital power supply market has achieved rapid progress in the recent years. Easy configuration, accurate telemetry, convenient fault analysis and reliability are the trends for the modern digital power supply, which are all provided by Linear’s new digital power controller, the LTC3883. The LTC3883 is a single phase ...

Video LTpowerPlay 

 

Digital Power Debug

Michael Jones - Applications Engineer Sep 20th 2012
Introduction to the Powerstick System A picture speaks a thousand words, so let’s just cut to the chase and look at the hardware and software we will be using. Above you can see three Powersticks, each with 14 rails, and one green LED per rail to indicate power. On the bottom right is a 12V DC input, and a DC1613A ...

Blog Post LTpowerPlay 

 

Digital Point of Load Converters vs. Digital Managers

Michael Jones - Applications Engineer Sep 1st 2012
When should you use a Point of Load Converter (POL) with PMBus, and when should you use a Digital Manager with old school POLs? In this post I will provide some heuristics for making this choice. So as to not mislead, my goal is modest: to provide enough intuition to make a first pass choice, that becomes an area to explore ...

Blog Post LTpowerPlay 

 

Digital Power Supervision and Telemetry

Michael Jones - Applications Engineer Aug 21st 2012
What does a Digital Power device do between start-up and shutdown? Two core functions are supervision and telemetry. Supervision is a fast acting safety feature that prevents damage to the device and/or load. Telemetry is an ongoing quality management feature. A recent advertisement in Bodo’s Power Systems listed the ...

Blog Post LTpowerPlay 

 

Digital Power Sequencing

Michael Jones - Applications Engineer Aug 14th 2012
Power Sequencing is a key component of Digital Power Architectures. In this post we will take a look at several ways to architect sequencing, and its consequences. In particular, we will see how design choices impact flexibility late in the design process. Building Blocks of Power Conversion Let’s take a look at our ...

Blog Post LTpowerPlay 

 

Digital Power Management

Michael Jones - Applications Engineer Jul 31st 2012
Many Digital Power products use the industry standard PMBus to enable system architects to manage and control multi-rail power architectures. However, many people are uncertain how to apply PMBus to solve real world problems. Over the course of the coming months I am going to blog on different topics related to the practical ...

Blog Post LTpowerPlay 

 

DC1590B-A - LTC3880EUJ Demo Board (RSENSE) I Vin Range: 6.5V to 24V, VOUT0 = 0.5V to 4V @ 20A, VOUT1 = 0.5V to 5V @ 20A, PMBus Controlled, works w/ DC1613A

Mar 28th 2012
Demonstration circuit 1590B is a dual output synchronous buck converter featuring the LTC®3880EUJ, a dual output peak current mode controller with digital power system management. There are two versions of the board available: DC1590B-A senses the output current across a sense resistor and has a default switching frequency ...

Demo Board Linduino LTpowerCAD LTpowerPlay 

 

DC1590B-B - LTC3880EUJ Demo Board (DCR) I Vin Range: 6.5V to 24V, VOUT0 = 0.5V to 4V @ 20A, VOUT1 = 0.5V to 5V @ 20A, PMBus Controlled, works w/ DC1613A

Jan 17th 2012
Demonstration circuit 1590B is a dual output synchronous buck converter featuring the LTC®3880EUJ, a dual output peak current mode controller with digital power system management. There are two versions of the board available: DC1590B-A senses the output current across a sense resistor and has a default switching frequency ...

Demo Board Linduino LTpowerCAD LTpowerPlay 

 

Integration of Analog DC/DC Controller with Digital Power Management

Yi Sun - Applications Engineer Mar 21st 2011
Modern electronics systems require high performance point of load power supplies with advanced and intelligent power management. Linear Technology’s LTC®3880 combines a best in class analog switching regulator controller with precise mixed signal data conversion for unsurpassed ease of power system design and management. ...

Video LTpowerPlay 

 

Using LTpowerPlay to Manage the LTC2978

Leo Chen - Applications Engineer Sep 17th 2010
The LTC2978 features enable power supply supervision, monitoring, sequencing and trimming with unmatched accuracy. These features combined with our easy to use GUI, assist the power supply designer in defining and implementing complex power management schemes in a fraction of the time previously possible. Fault logging capability ...

Blog Post Video LTpowerPlay