The power modules accept an 85 to 265 V_AC and a 47 to 63 Hz input for worldwide use. Contact the factory for applications requiring a 400 Hz input. The typical efficiency is 90 to 92%; a 3% increase over the 2nd generation PFE500SA power modules. The power density is 100 W/in³. The output voltage can be adjusted from 22.4 V to 33.6 V using either the module’s trim function or the PMBus interface. The opto-couplers have been replaced with digital isolators for long-term reliability and stability.