Solutions Search - Digital Power System Management (PSM)
6A Monolithic Synchronous DC/DC Step-Down Converter with Digital Power System Management
Aug 10th 2016
Design Note 554: Introduction
Digital Power System Management (PSM) controllers usually target high current point-of-load (POL) applications. Lower current applications, with up to 6A load current, can also benefit from PSM features. The LTC®3815 is a 6A monolithic synchronous stepdown converter with digital power monitoring ...
Powering Altera Arria 10 FPGA and Arria 10 SoC: Tested and Verified Power Management Solutions
Feb 19th 2016
Design Note DN549: Introduction
FPGA development kits allow system developers to evaluate an FPGA without having to design a complete system. Figures 1 and 2 show Altera’s new 20nm Arria 10 FPGAs and Arria 10 SoCs (System-on-Chip) development boards. These boards are tested and verified by Altera, exemplifying best design ...
Dual 9A, Step-Down μModule Regulator with Digital Power System Management
Jul 16th 2015
Design Note 542: Introduction
The LTM4675 is a dual 9A or single 18A step-down μModule® (micromodule) DC/DC regulator featuring remote configurability and telemetry monitoring of power system management (PSM) parameters over PMBus—an open standard I2C-based digital interface protocol. Its 6mm × 11.9mm × ...
LT Programming Hex File Format Documentation -- In Circuit Programming
Mar 26th 2015
Purpose of Document
The purpose of this document is to clearly articulate the structure of the LT Programming Hex file in such a way that test engineers can build infrastructure to parse these files and execute programming logic to successfully program one or more LT Digital Power Product devices in cicruit, during test, or ...
Linduino PSM
Mar 12th 2015
While many engineers use a dongle and tools to configure Power System Management devices via PMBus, a growing number of designs are adding Board Management Controllers, or connecting their PMBus to an existing microcontroller or application processer. At LTC, the dongle/tool option is comprised of a DC1613 and LTpowerPlay, and ...
LTC Power System Management Tips for Success
Jul 28th 2014
Here are some tips to make sure you get the most out of Linear Technology's Power System Management (PSM) products by using them the way they were intended. Follow these rules to stay out of trouble. Rule #1: When Sharing is Good
a) Always connect SHARE_CLK pins together. This keeps all LTC PSM devices on a common ...
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 ...
PMBus Spec Working Group Issues Version 1.3 For Review
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 ...
High Performance Single Phase DC/DC Controller with Power System Management
Aug 1st 2013
Design Note 517: Introduction
The LTC®3883 is a single phase synchronous stepdown DC/DC controller featuring a PMBus interface for digital control and monitoring of key regulator parameters. It has integrated MOSFET gate drivers and can function either standalone or in a digitally managed system with other Linear Technology ...
Fault Management Architecture
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 ...
Digital Loops Are Not the Same as Analog Loops
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 ...
Digital Power: Why Should I Care About Accuracy?
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 ...
Digital Power: Why Should I Care About Integration?
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 ...
Digital Power Debug
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 ...
Digital Point of Load Converters vs. Digital Managers
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 ...
Digital Power Supervision and Telemetry
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 ...
Digital Power Sequencing
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 ...
Digital Power Management
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 ...
Using LTpowerPlay to Manage the LTC2978
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 ...
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