In LCD backlight applications, a dc-to-ac inverter drives cold-cathode fluorescent lamps. The inverter's input comes from the display's power supply. Currently, it spans from ...

Figure 1 Analog PWM circuit using triangle wave generator and comparator In this Design Idea, we show an alternative circuit. It uses very little power, can be implemented in a small silicon area, and ...

Linear Technology has unveiled a new pulse width modulation (pwm) generator with 48 independent channels. According to the IC specialist, each channel has an individually adjustable 12bit (4,096 steps ...

The sawtooth wave generator is in fact a simple relaxation oscillator formed by a jellybean BC547B NPN transistor (T1). A sawtooth signal with circa 520Hz can be seen across the 100nF capacitor (C1) ...

The “A” side compares the triangle waveform with the dc control signal and generates a PWM signal at OUTA. The PWM generator and dc control-signal generator should run off the same +5-V supply.

Set the PWM frequency to 38 kHz and the duty cycle somewhere in the 33%-50% range, and you’re set. But what if you don’t have a competent PWM generator?

Intersil has announced the ISL6539, a dual PWM controller IC with built-in protection and monitoring in a single IC. The controller accepts an input voltage from 5V to 15V and can operate from a 3.3 ...

The dsPIC33AK512MC family is designed to offer low-latency, 40 Msps ADCs and 1.25 ns PWM resolution, providing a feature- and cost-optimized solution for multi-motor control and complex embedded ...

His software project turns a USB Saleae Logic Analyzer into a signal generator. There are already a multitude of reasons to own one of these fantastic tools.

Intersil has announced the Endura ISL6522B single-phase, dual-mode, synchronous-buck PWM controller/driver IC designed to provide soft-start to power sensitive circuits and to handle pre-biased loads.