Digital or analogue POL? Key points to consider

April 13, 2011 // By Patrick Le Fèvre
Given the widespread availability of triedand-tested analogue POLs, why specify a digital POL rather than an analogue one? The short answer is that following many years of continual improvement, analogue dc-dc converters have reached a development plateau that requires a fundamental re-appraisal in order to optimise conversion efficiency, power density, and application flexibility.

Mixed-signal silicon processes now allow chip designers to economically combine a digitally-controlled core that generates the PWM stream alongside a supervisory measurement and control subsystem together with the industry-standard communications interface, PMBus.

Read the full article on page 36 of our April digital edition .