Engee documentation

Diode

Piecewise linear diode.

diode

Description

The Diode block represents a piecewise linear diode.

If the diode voltage is greater than the Forward voltage parameter value, the diode behaves as a linear resistor with low resistance determined by the On resistance parameter value and a series voltage source (diode voltage drop).

If the diode voltage is less than the forward voltage, the diode behaves as a linear resistor with low conductance defined by the Off conductance parameter value.

diode 1

At forward bias, the diode characteristic is described by the equations:

,

,

where

  • - voltage;

  • - current;

  • - series source voltage;

  • - forward voltage;

  • - resistance at forward bias;

  • - conductivity at reverse bias.

At reverse bias, the diode characteristic is described by the equation:

.

The term ensures that there is no gap in the current at the transition between forward and reverse bias.

Ports

+ - positive
electricity

Electrical port, represents the positive terminal of the diode.

- is the negative
electricity

Electrical port, represents the negative terminal of a diode.

Parameters

Parameters

Forward voltage - minimum forward bias voltage
`0.6 V (by default)

Minimum voltage to be applied to open the diode.

On resistance - forward bias resistance
`0.3 ohms (by default).

Diode resistance at direct bias.

Off conductance - reverse bias conductance
`1e-81/ohm (by default)

The diode conductance at reverse bias.

Initial Targets

Current - initial current value
0 A (By default) | scalar

Initial current value.

Voltage - initial value of voltage
0 V (by default) | scalar

Initial voltage value.