Articles - Supply - 4

Charge pumps are ideal for designs using a larger, main single-voltage power supply that requires lower-current auxiliary voltage sources, and can handle ICs and components that demand multiple voltages. A charge pump is a type of switch-mode ...

Brian King, Texas Instruments EDN In isolated power supplies, optocouplers pass the feedback signal across the isolation boundary. Optocouplers contain both a light-emitting diode (LED) and a photo detector. Current flowing through the LED results ...

Haifeng Fan, Texas Instruments Introduction The demand for boost regulators has increased recently due to emerging applications in automotive, industrial and consumer marketplaces. Examples of new applications include emergency call (eCall) ...

Haifeng Fan, Texas Instruments Part 1 Non-synchronous versus synchronous rectification Figure 7. Synchronous boost regulator. The DC/DC switching regulators shown in the previous examples are all non-synchronous in which a rectifier diode is used. ...

Alan Walsh, Analog Devices Precision measurement is extending into application areas that require greater and greater power efficiency. This is particularly true with the advent of IoT, which is driving greater need for wireless sensor nodes with ...

Alan Walsh, Analog Devices Part 1 If the ADC throughput is reduced to 10 kSPS then the current consumption of the ADC scales linearly down to 15 uA (factor of ~100) and correspondingly, the switching frequency ripple of the ADP5300 scales to 46.5 ...

Ron Michallik, Texas Instruments Electronic Design This Idea for Design rearranges the schematic and physical layout of an isolated dc-dc converter using a shunt regulator to overcome susceptibility to ESD and electrical overstress. Did you know ...

Christopher Dean, Texas Instruments Electronic Design By adding a digital potentiometer and ratiometric division to a voltage-reference IC's feedback loop, you can set the reference's output voltage using a digital code. Adjustable voltage ...

There are a variety of reasons why a system designer may want to consider paralleling of DC power supplies. Some of these are related to the bill of materials and logistics issues, others are focused on satisfying system current, performance or ...

Battery University Discover what causes Li-ion to age and what the battery user can do to prolong its life. Battery research is focusing on lithium chemistries so much that one could imagine that the battery future lies solely in lithium. There are ...