AN1007 L6561 -基于开关取代了银箱美格的AMPS

AN1007 L6561 -基于开关取代了银箱美格的AMPS

AN1007
APPLICATION NOTE
L6561 - BASED SWITCHER REPLACES MAG AMPS IN
SILVER BOXES
by Claudio Adragna


Mag amps (a contraction of "Magnetic Amplifier") are widely used in multi-output switching power
supplies to get auxiliary regulated power rails. However, they are expensive, bulky, and require a
high level of design expertise.
ST’s L6561, an 8-pin Transition Mode PFC (Power Factor Corrector) controller, is surprisingly suit-
able for implementing a switch-mode architecture as