How To Solve Frequency Jitter In Constant On-Time POLs With A Ripple Injection Circuit


The purpose of this article is to walk through the steps of implementing a ripple injection circuit for constant on-time POLs. It covers how to connect the circuit and then how to calculate the values used in the circuit. Frequency jitter can be caused by a number of things such as noise injection into the voltage sense lines from outside sources, to very low ripple current in the output ind... » read more

Don’t Underestimate The Multiphase Buck Voltage Regulator


Step-down (buck) voltage regulators have long been the preferred DC-DC conversion electronic workhorse thanks to their inherently high efficiency. Only in buck mode the current is directed to the output during the entire cycle. The higher delivery of current to the output, per cycle, makes the buck converter the most efficient architecture. As one of many examples, modern microprocessors, from ... » read more