凌力尔特模拟创新杂志 (OCTOBER 2011)

The continuous march in electronics toward lower supply voltages
and higher load currents puts tremendous pressure on point-ofload DC/DC converters to maintain a fast pace of performance
improvements. For instance, a lower supply voltage means a
regulator must support a higher step-down ratio from a 12V
or 24V power rail while maintaining high efficiency. Regulation
accuracy also becomes more important as supply voltages
drop—and accuracy must be maintained in the
presence of parasitic IR drops and dynamic load
transients. EMI generated by switching converters
is also of concern, especially in RF applications.
October 2011 Volume 21 Number 3



I N T H I S I S S U E

2-channel and 4-channel
Fast, Accurate Step-Down DC/DC
Controller Converts 24V Directly to
pin-selectable I2C
multiplexer 11



high efficiency power
supply for Intel IMVP-
1.8V at 2MHz
6/6+/6.5 CPUs 20 Bud Abesingha


3A linear regulator easily The continuous march in electronics toward lower supply voltages
paralleled to spread power
and higher load currents puts tremendous pressure on point-of-
and heat 24