Analog Circuit Design Volume Three

Chapter 272

Power supply sequencing made simple

Bob Jurgilewicz

Abstract

The LTC2928 power supply sequencer, which can handle system control issues such as sequence order, timing, reset generation, supply monitoring and fault management, is described.

Keywords

Power supply sequencer

LTC2928

Introduction

System designers face a number of problems when it comes to controlling multiple power supplies. Turn-on and turn-off characteristics, supply monitoring, fault management and reset generation are a few issues that affect both the short-term system performance and long-term reliability. Design is further complicated by a process that often puts final decisions about supply requirements at the end of the design phase. So, a good supervisor/control ...