Table 2: Calculations of power conversion and link efficiencies.

FrequencyConversion efficiency (through class E converter and link), η conv = 𝑃 s e c o n d a r y / 𝑃 a m p Drain efficiency, η drainLink efficiency, η link = η conv/η drainLoad efficiency excluding regulator and gate drive losses, η load_net = 𝑃 l o a d / 𝑃 a m p Load efficiency excluding regulator but including gate drive losses, η load_driver = 𝑃 l o a d / 𝑃 d r i v e r Overall system efficiency, η system = 𝑃 l o a d / 𝑃 i n

183.851.8%79.0%65.6%10.9%9.2%3.6%
195.061.5%85.4%72.0%16.7%13.2%5.3%
206.171.2%92.8%76.7%30.5%20.2%8.9%
211.975.6%94.0%80.4%46.3%26.0%12.5%