Table 2: OFFLINE APPROACH IS CHEAPER, BUT HIGHER RIS
  AC-DC power supply Wall adapter and DC-DC power supply
PWB area (in.2) 10 6
Component height (in.) 0.5 0.3
Weight (lbs) 0.4 1.6
Aesthetics Integrated in product Wall wart
Relative cost (10k units) 2.5 2.0
Relative cost (1M units) 1.0 1.1
UL HV in product Simpler approval
Relative time-to-market Additional 2 to 4 weeks Baseline
Relative risk Highest Lowest