PGA26E07BA-SWEVB006 Ver. 1.2 4Description of the Evaluation BoardThe PGA26E07BA-SWEVB006 is a chopper evaluation board using a dedicated X-GaN driver(AN34092B) for measuring the high speed switching characteristics of turn-on and turn-off of the X-GaN power transistor. The dv/dt and di/dt using an inductive load can be measured by controllingthe X-GaN power transistor with an external signal. There are test terminals prepared for easymonitoring of Vgs and Vds waveforms. To improve the accuracy of the current measurement, usethe mounted semi-rigid connector and connect to a 50Ω terminated oscilloscope input. Theevaluation board together with the user’s guide also serves as a reference design for the X-GaNgate driver circuit and PCB layout.Recommended Operating ConditionsTable 1 shows the operating conditions used to achieve the switching performance reported in theMeasurement Result. All the components used in the evaluation board are rated for therecommended operating conditions only.Please read the measurement procedure before starting the evaluation. It is necessary to refer tothe X-GaN transistor and driver datasheet when using this user’s guide. The detail operation of thegate driver IC and the design of its peripheral components are described in the OPERATIONsection of the datasheet.Table 1: Recommended operating conditionsParameter ConditionInput voltage (DC power ①) 400VDriver IC power supply voltage (DC power ②) 12VExternal clock voltage(pulse generator input) 5VExternal clock frequency (Duty Cycle)(pulse generator input)Double pulse(Do not perform continuous operation)External inductor 95uH @ DC Current=15ATemperature 25ºC①② Power supply equipment number as illustrated on page 9 and 10