Turn-on Delay

Purpose

Delay rising flank of input pulses by fixed dead time

Control / Delays

This block is used to delay the turn-on command for power semiconductors:

When the input signal changes from \(0\) to non-zero, the output signal will be set to \(1\) after the dead time has passed, provided that the input signal has remained non-zero.
When the input signal becomes \(0\), the output is immediately set to \(0\).

Example Model

See the example model “Turn-on Delay”.
Find it in PLECS under Help > PLECS Documentation > List of Example Models.

Dead time source: Specifies whether the dead time is determined by the Dead time parameter (internal) or by an external input signal (external).

↳ Added in PLECS 4.3.
Dead time: Time by which the turn-on event is delayed, in seconds \((\mathrm{s})\). If set to 0, the delay is disabled, i.e. the output is set to \(1\) immediately when the input signal becomes non-zero.
Dead time rounding (fixed-step): If the dead time is determined by an external signal and the Turn-on Delay is used with a fixed-step solver, this parameter specifies how the dead time is rounded to an integer multiple of the fixed-step size.