MIC22601 Datasheet, PDF (14/18 Pages) Micrel Semiconductor – 4 MHz, 6A Integrated Switch Synchronous Buck Regulator

Micrel, Inc.
Ratio Metric Tracking
MIC22601
An alternative method here shows an example of a V_DDQ
& V_TT solution for a DDR memory power supply. Note
that POR is taken from VO1 as POR₂ will not go high.
This is because, POR is set high when FB > 0.9⋅Vref. In
this example, FB₂ is regulated to ½⋅V_REF.
May 2009
14
M9999-050509-A