O'Reilly logo

Analog Circuit Design by Jim Williams, Bob Dobkin

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

2

Minimizing switching regulator residue in linear regulator outputsBanishing those accursed spikes

Jim Williams

Introduction

Linear regulators are commonly employed to post-regulate switching regulator outputs. Benefits include improved stability, accuracy, transient response and lowered output impedance. Ideally, these performance gains would be accompanied by markedly reduced switching regulator generated ripple and spikes. In practice, all linear regulators encounter some difficulty with ripple and spikes, particularly as frequency rises. This effect is magnified at small regulator VIN to VOUT differential voltages; unfortunate, because such small differentials are desirable to maintain efficiency. Figure 2.1 shows a conceptual linear regulator ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required