DESIGN PHASE: reconcile
SUB ELEMENT NAME: reconcile
VARIABLE NAME: [HER]
DATE: REVISION LETTER: REVISION DATE:
APPLICABILITY: all circuits, feedback circuits, regulator
circuits, switching-mode circuits, and circuits
with magnetics.
ACTIVITY: Reconcile requirements, measurements, and analysis and
conduct prelayout design review.
INPUT: Circuit requirements
Circuit measurements
Circuit analysis
OUTPUT: Reconciled set of key measurements and analysis with
requirements. Conduct and document in letter for the prelayout
design review.
ALGORITHM:
[HER] = engineer hours to reconcile measurement and analysis
[HERALL]+ engineer hours to reconcile all circuits
[HERFB]+ engineer hours to reconcile feedback circuits
[HERREG]+ engineer hours to reconcile regulation circuits
[HERSM]+ engineer hours to reconcile switching mode circuits
[HERMAG] engineer hours to reconcile circuits with magnetics
[HTR] = [HTR*] * as above
All circuits
============
[HERALL] =
0.0+ set up time
0.0* time per part
[PARTS COUNT] number of parts
[HTRALL] = 0.5*[HERALL]
Feedback circuits
=================
[HERFB] =
0.0+ set up time
0.0* hours per feedback loop
[FEEDBACK LOOP COUNT] number of feedback loops
[HTRFB] = 0.5*[HERFB]
Regulator circuits
==================
[HERREG] =
0.0+ set up time
0.0* hours per regulation plot
[NR] number of regulation plots
[HTRREG] = 0.5*[HERREG]
Switching-mode circuits
=======================
[HERSM] =
0.0+ set up time
0.0* percentage of transient analysis hours
[HEATR] hours for transient analysis
[HTRSM] = 0.5*[HERSM]
Magnetics circuits
==================
[HERMAG] =
0.0+ set up time
0.0* number of hours per magnetic
[MAGNETIC COUNT] number of magnetics
[HTRMAG] = 0.5*[HERMAG]
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 24 February 2001
Copyright © 2001 Jerrold Foutz
All Rights Reserved