Regulation Analysis

DESIGN PHASE:       analysis
SUB ELEMENT NAME:   regulation analysis
VARIABLE NAME:      [HEAR]
DATE:               REVISION LETTER:    REVISION DATE:  
APPLICABILITY:      regulator circuits

ACTIVITY:  Analysis line and load regulation.  These are plots of
the regulated output (voltage in the case of voltage regulators)
as a function of one other parameter with the others set a
nominal.  Examples are load regulation, line regulation, bias
voltage regulation, and in the case of multiple outputs
controlled with one feedback loop, cross regulation.  Power loss
or efficiency versus load is also desired a desired measurement
for regulator circuits.  Assumes use of Spice.
     Regulation calculations consist of:
line.regulation
bias.regulation
load.regulation
cross.regulation
power.loss.vs.load

OUTPUT:  Plots of line and load regulation for comparison to
measurements and requirements

ALGORITHM:

[HEAR] =
0.0+                set up time
0.0*                time for each regulation plot
[NR]                number of regulation plots

[NR] =              number of regulation plots
[NIR]+              number of input regulation plots including
                    cross regulation
[NOR]               number of load regulation plots including
                    cross regulation
+1                  power loss versus load plot

[NIR] =             One output plot for each output is required
                    for each input
[INPUT COUNT]
*[OUTPUT COUNT]

[NOR] =
[OUTPUT COUNT]+     Output regulation for nominal inputs
2*                  Approximates factorial for output cross
([OUTPUT COUNT]-1)  regulation

DISCUSSION:

Author: Jerrold Foutz, foutz@smpstech.com

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 22 February 2001