ISL6228具有1.5ms数字软启动功能,可以一开始就进入一个预偏置的输出电压状态。此外它还采用一个电阻分压器来编程输出电压设置点。ISL6228在重负载时能以连续导通模式(CCM)运行,轻负载时则转向二极管仿真模式(DEM)来提高轻负载效率。在CCM模式中,该控制器一般用作一个同步整流器。在DEM模式中,低端MOSFET可以保持关闭,以阻止负电流从输出电感器流入低端MOSFET。 Application Note 1716
Authors: Paul Traynham and Dan Swank
Using the Transient Load Generator on the ISL8200M
2-Phase Power Module Evaluation Board
(ISL8200MEVAL2PHZ)
The Need for Testing Transient
Load Response of POL (Point of
Load) Regulators
Today’s FPGAs, DSPs and other processors require higher load
currents than in the past. It is not uncommon to see load
currents in the 10A-20A range or higher. Manufacturers of
these devices specify tight regulation of the supply even during
load transients. In order to verify the POL regulators meet
these requirements, ……