L6374 STMicroelectronics, L6374 Datasheet - Page 12

• Manufacturer Part Number: L6374
• Description: Industrial Quad Line Driver
• Manufacturer: STMicroelectronics

The switching of the output stage
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switching when the inductor can discharge; while the switching looks "delayed" if the output
transition tends to initiate a charging phase (see
parasitic elements, the waveforms resemble the ones of the purely resistive cases.
With a real, more composite load, the effect of the inductive kick in comparison to the
resistive load, would be more apparent.
With a capacitor and a resistor in parallel as a load, another type of waveform can be seen
(reported in
As long as the output stage stays in the transient high impedance state, the output voltage
will follow the classic exponential law of an RC relaxation.
As soon as the other transistor is switched on and takes charge, the waveform is quickly
forcibly brought to its steady state value.
From the above it is possible to see how the switching times, inherently very fast, of the
output stages, may be difficult to identify in a waveform if the output load is not accurately
taken into consideration.
Figure 11
Figure 7.
show typical switching waveform for inputs and outputs.
Figure
V
S
= 35 V, 350 Ω connected to ground
10).
Figure
9). With a load almost free from
L6374