Datasheet

DocID6554 Rev 8 15/23
L6598 Block diagram description
23
5.5 Comparators
Two CMOS comparators are available to perform protection schemes.
Short pulses (
 200 ns) on comparators input are recognized. The EN1 input (active high),
has a threshold of 0.6 V (typical value) forces the device in a latched shut down state
(e.g. LVG low, HVG low, oscillator stopped), as in the under voltage conditions. Normal
operating conditions are resumed after a power-off power-on sequence. The EN2 input
(active high), with a threshold of 1.2 V (typical value) restarts a soft-start sequence (see
timing diagrams in Figure 3, Figure 4, and Figure 5). In addition the EN2 comparator, when
activated, removes a latched shutdown caused by EN1.
Figure 14. Switching time waveform definitions
Figure 15. Deadtime and duty cycle waveform definition