Articles Supply

Abstract This article discusses the use of dynamic voltage scaling (DVS) to achieve precise voltage regulation. DVS is a process that adjusts the output voltage slightly higher or lower in anticipation of load transients. The article examines how ...

A recent trend in the design of portable devices has been to use ceramic capacitors to filter DC/DC converter inputs. Ceramic capacitors are often chosen because of their small size, low equivalent series resistance (ESR) and high RMS current ...

Introduction Electronic equipment uses predominantly positive voltage rails for power. Occasionally, some negative voltage rails are also used. For this reason, negative (or inverting) output DC/DC converter solutions are not as common as their ...

Introduction Wide bandgap power semiconductor devices like Silicon Carbide (SiC) MOSFETs are enjoying growing popularity in many modern power electronic applications like E-mobility and renewable energy. Their extremely fast switching speed ...

As shown in Figure 1, this issue had been previously addressed during pre-internet times in EDN of January 18,1990 but a further detailed look at the idea is warranted thirty-four years later. Figure 1. Archival design idea “Resistor isolates ...

It was a no brainer at first. Circa 1985 equipment still in use by telcos, the DUT was a remote-operated twisted-pair telephone cable analyzer. We had extensively reverse-engineered and repaired several of these a couple years ago, the OEM was ...

While choosing an op-amp buffer for a new high-resolution single-supply DAC, a source of negative supply was considered because the buffer op-amp had to provide true zero voltage on its output. For instance, a typical rail-to-rail output op-amp ...

A well known power supply circuit is the capacitance multiplier. It doesn’t regulate, but instead reduces ripple noise while the output tracks at some fraction of the input voltage (Figure 1). Figure 1. Standard “capacitance ...

Boost converters, like other switchers, have traditionally received their control signals from a dedicated circuit. However, a recent trend is to integrate simple switching-power-supply building blocks into generic devices, such as ...

Here are some simple tips for servo systems that may improve productivity and prevent costly downtime. To help engineers and design teams get all the performance possible from servo systems, here are some of the more troublesome servo predicaments ...