DESIGN PHASE: measurement
SUB ELEMENT NAME: photo measurement -
reverse biased safe operating area measurement
VARIABLE NAME: [HEMTRSOA]
DATE: REVISION LETTER: REVISION DATE:
APPLICABILITY: switching mode circuit
ACTIVITY: Measure (take oscilloscope photograph) of switching
transistor current vs voltage during normal and worse case
switching conditions for reverse biased secondary breakdown
conditions.
OUTPUT: Labeled photographs in laboratory notebook for
comparison to transistor RBSOA specifications and circuit
analysis (usually Spice plots under the same conditions).
ALGORITHM:
[HEMTRSOA] = engineer hours for measuring reverse biased safe
operating area
[HTMTRSOA] = technician hours for measuring reverse biased safe
operating area
0.0* hours per measurement
[NPWRXSTR] number of power transistors
DISCUSSION:
Original: Foutz, J., Power Supply Circuit Development Estimating Aid - An Expert System Application, IEEE Applied Power Electronics Conference Record, New Orleans, February 1-5, 1988. Revised 25 February 2001
Copyright © 2001 Jerrold Foutz
All Rights Reserved