The parameters of Figure 3-3 are taken under the following conditions:

• Switching frequency: 140 kHz
• Primary side GaN turn-on slew rate: 20 V/ns
• Output voltage: 54 V
• Dead-time range: 640 ns to 80 ns, auto-adjusted in code based on operating point
• Auxiliary bias not included
• Output current shunt resistors and ORing FETs are shorted
• Input voltage, input current, and output voltage are measured using Fluke 83-V digital multimeters
• Output current measured using a 1.997713-mΩ calibrated shunt resistor + Agilent 34401A 6-digit digital multimeter
• PFB0412EN-E fan used to provide forced air across PSFB power stage

Figure 2-1 Efficiency Graph