I'm a bit of a noob on all of this, but can anyone help me (or point to a great reference resource) on pro's and con's of each in designing a power management circuit? Specifically, I'm looking for what kinds of voltage and frequency applications each manufacturing process is used nowadays... I.e. LDMOS power amps are heavily used in wireless infrastructure systems due to their higher operational frequency (1GHz+)... How do bipolar and CMOS devices compare? the rise of BCDMOS is particularly interesting - if I understand it right, LDMOS here is used for high-rel power, bipolar is for higher accuracy analog functionality (voltage reference?), and CMOS is just for general integration. while the general trends are pretty well known (CMOS for logic and some analog, LDMOS for basestation PAs, GaAs for handset PAs, bipolar for large-scale applications), just would like some professional opinion..