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PCCCS - Model polynomial current-controlled current source

Library

SPICE-Compatible Sources

Description

The PCCCS (Polynomial Current-Controlled Current Source) block represents a current source whose output current value is a polynomial function of the current through the input ports. The following equations describe the current through the source as a function of time:

• If you specify an n-element vector of polynomial coefficients for the Polynomial coefficients parameter:

  

• If you specify a scalar coefficient for the Polynomial coefficients parameter:

  

where:

• I_in is the current through the input ports.

• p is the Polynomial coefficients parameter value.

The block uses a small conductance internally to prevent numerical simulation issues. The conductance connects the output ports of the device and has a conductance GMIN:

• By default, GMIN matches the Minimum conductance GMIN parameter of the SPICE Environment Parameters block, whose default value is 1e–12.

• To change GMIN, add a SPICE Environment Parameters block to your model and set the Minimum conductance GMIN parameter to the desired value.

Dialog Box and Parameters

Polynomial coefficients

The polynomial coefficients that relate the input current to the output current, as described in the preceding section. The default value is [ 0 1 ].

Ports

The block has the following ports:

+

Positive electrical input voltage.

-

Negative electrical input voltage.

N+

Positive electrical output voltage.

N-

Negative electrical output voltage.

See Also

, PCCCS2PCCVS, PVCCS, and PVCVS

P-Channel MOSFET

PCCCS2

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