Техническая Спецификация для STMicroelectronics 12 V, 150 mA non-isolated buck converter using VIPer™ Plus - VIPER06XS STEVAL-ISA115V1 STEVAL-ISA115V1
Модели
STEVAL-ISA115V1
Functional check
AN4260
14/29
DocID024275 Rev 2
6 Functional
check
6.1 Startup
The startup phase at maximum load is shown in
at both nominal
input voltages (115 V
AC
and 230 V
AC
).
6.2 Overload
protection
), the drain current reaches the I
DLIM
value
(or the one set by the user through the RLIM resistor). In every cycle where this condition is
met, a counter is incremented; if it is maintained continuously for the time t
met, a counter is incremented; if it is maintained continuously for the time t
OVL
(50 msec
typical, internally set) the overload protection is tripped, the power section is turned off and
the converter is disabled for a t
the converter is disabled for a t
RESTART
time (1 sec typical). After this time has elapsed, the
IC resumes switching and, if the short is still present, the protection occurs indefinitely in the
same way (
same way (
). This ensures restart attempts of the converter with low repetition
rate, so that it works safely with extremely low power throughput and avoids the IC
overheating in case of repeated overload events.
overheating in case of repeated overload events.
Figure 19. Startup at V
IN
= 115 V
AC
, full load
Figure 20. Startup at V
IN
= 115 V
AC
, full load,
zoom
Figure 21. Startup at V
IN
= 230 V
AC
, full load
Figure 22. Startup at V
IN
= 230 V
AC
, full load,
zoom
I_L2
AM16645v1
AM16646v1
I_L2
AM16647v1
AM16648v1