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ST1S14 Scheda tecnica(PDF) 33 Page - STMicroelectronics

Il numero della parte ST1S14
Spiegazioni elettronici  Power good open collector output
PDF  46 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST1S14 Scheda tecnica(HTML) 33 Page - STMicroelectronics

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ST1S14
Application information
Figure 20. Short-circuit current VIN = 24 V (IL_PK = IFOLD)
Figure 21 shows the operation of the constant current protection when a short-circuit is
applied at the output at the maximum input voltage. According to Figure 20, the maximum
inductor current escalates over the foldback current limitation.
Figure 21. Short-circuit current VIN = 43 V (IL_PK > IFOLD)
7.4.3
Start up phase in short circuit condition
The start up phase in short circuit condition rapresents a preparatory example to show the
current protection strategy.
Figure 25 shows the first switching pulses at power up when the switch current rises but is
lower than the current protection level, called OCP1. As a consequence the switching
frequency is not reduced.



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