# Smps Nonlinear Carrier Controller

D

#### D from BC

Jan 1, 1970
0
I found this on:
It's on page 7 and a large signal model on page 9.
The benefit is no power stage damping.

How does a smps nonlinear carrier controller work?
Can anyone spare a nonlinear carrier controllers for dummies
explanation?
D from BC

T

#### Terry Given

Jan 1, 1970
0
D said:
I found this on:
It's on page 7 and a large signal model on page 9.
The benefit is no power stage damping.

How does a smps nonlinear carrier controller work?
Can anyone spare a nonlinear carrier controllers for dummies
explanation?

yeah, Dragan did, in an older paper

IEEE trans power electronics, alas cant remember which one.
D from BC

heres an example. Run a DCM flyback converter from a full wave rectified
supply (no cap).

run it at constant on time

know Vin = Lp*dI/dt

dt = constant

Lp = constant

dI = Vin*(dt/ton) = K*Vin

so input current peaks follow |sin| envelope. voila, control-free PFC

the NLC method uses an analogous approach. write down the equations for
input current as a function of Vin, D then solve for D

Cheers
Terry

D

#### D from BC

Jan 1, 1970
0
yeah, Dragan did, in an older paper

IEEE trans power electronics, alas cant remember which one.

heres an example. Run a DCM flyback converter from a full wave rectified
supply (no cap).

run it at constant on time

know Vin = Lp*dI/dt

dt = constant

Lp = constant

dI = Vin*(dt/ton) = K*Vin

so input current peaks follow |sin| envelope. voila, control-free PFC

the NLC method uses an analogous approach. write down the equations for
input current as a function of Vin, D then solve for D

Cheers
Terry

Thanks for the kickstart...
D from BC

T

#### Terry Given

Jan 1, 1970
0
D said:
Thanks for the kickstart...
D from BC

If I run across the paper I'll post the reference. Im just too lazy to
scan thru a gazillion professional comics

Cheers
Terry

F

#### Fred Bartoli

Jan 1, 1970
0
Terry Given a écrit :
If I run across the paper I'll post the reference. Im just too lazy to
scan thru a gazillion professional comics

IIRC the paper is in the same directory, which is (was) browsable (???).

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