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Penny Xu
Feb 16, 2017
Make your PSE system smarter and more efficient
Power over Ethernet (PoE) enables Ethernet cables to carry electrical power as well as data. For example, old Internet protocol (IP) phones usually needed a DC power supply and Ethernet cable to deliver power and data, respectively. With PoE implemented in an Ethernet switch, power is delivered through the Ethernet cable to the IP phone, eliminating...
Manjing Xie
Feb 15, 2017
Power Tips: How to use Nyquist plots to assess system stability
A Bode plot is a very popular way to determine a dynamic system’s stability. However, there are times, when a Bode plot is not a straightforward stability indicator. Figure 1 shows a Bode plot of TI’s TPS40425synchronous buck converter w...
Alexander Gronbach
Feb 14, 2017
USB Type-C™ power: Should your next device have USB Type-C?
As USB Type-C ports continue to rise in popularity in laptops, tablets and smartphones, so do the number of failures that early adopters experience. These failures are frequently due to the new USB Type-C cables, many of which are not compliant with the official USB 3.1 specification. With previous USB implementations (common ones shown in Figure...
Kelvin Odom
Feb 10, 2017
Deciphering module data sheets – efficiency
In my blog, Deciphering module data sheets – size , I discussed how it’s critical to go beyond just the front page of the data sheet to get the full story about a power module’s integration and solution size. In this installment, I’ll talk about similar issues with power module transient response and efficiency. Transient...
Kelvin Odom
Feb 8, 2017
Deciphering module data sheets – size
I’m sure at some point or another, we’ve all agreed to terms and conditions that we haven’t really read. Why bother spending so much time reading fine print? Like any important document, data sheets also have fine print – one page of flashy specs, but upwards of 20 pages of fine print. This is especially true for power modules...
Jeff Sherman
Feb 3, 2017
The flexibility of advanced controllers and NexFET™ Power Blocks in high-power POL applications
Many of today’s space-constrained designs use point-of-load (POL) converters with integrated power MOSFETs (iFETs) to solve engineering challenges. iFET converters offer integration that results in smaller space and ease of use. While these advantages are compelling, engineers often need a controller with specific features or functionalities that...
Kelvin Odom
Feb 2, 2017
Exploring watchdog timer applications
In my last post, “ What is a watchdog timer, and why is it important? ” I discussed how watchdog timers (WDTs) work and how you can implement them in your system. In this post, I’ll talk about why you should use a watchdog timer in your application, how a window watchdog timer works and some additional watchdog timer features that...
Aarsh Shah
Feb 1, 2017
Sequencing and managing multiple power rails in a system: common questions answered
The input voltages (rails) powering today’s complex field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), digital signal processors (DSPs), central processing units (CPUs) and microcontrollers (MCUs) must be sequenced on and off in a controlled manner. For example, TI’s digital PMBus sequencers can control...
Yvette
Jan 31, 2017
How to achieve higher system efficiency- part two: high-speed gate drivers
It’s the new year and designers are still pursuing higher efficiency in their designs. In part one of this series , I discussed how high-current gate drivers can help systems achieve higher efficiency. High-speed gate drivers can accomplish the same. A high-speed gate driver can increase efficiencies by reducing the power consumed from a FET’s...
Eric Faraci
Jan 26, 2017
Powering the IoT
The Internet of Things (IoT) – how sweet the sound that saved the wretched life of our appliances. Devices once lost, but now are found, were dumb but now communicate. While these features enable appliances to interconnect and work seamlessly with our phones and the rest of the home, they do not come free. More features mean more power, so while...
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