VIPER53EDIP-E View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'VIPER53EDIP-E' PDF : 31 Pages View PDF
Standby Mode
VIPer53EDIP - E / VIPer53ESP - E
Where Ip(VCOMPbl2) is the peak Power MOSFET current corresponding to a compensation
voltage of VCOMPbl (1V). Note: The power point PSTBY where the converter is going into
burst mode does not depend on the input voltage.
The standby frequency FSWstby is given by:
PSWstby = P--P---S-R--T--S-B--T--Y- • FSWnom
The ratio between the nominal and standby switching frequencies can be as high as 4,
depending on the Lp value and input voltage.
Figure 4.
.Standby Mode Implementation
ton
3
600ns
Minimum
turn on
350ns
1
2
VVCCOOMMPPsodff
VCOMPbl
PIN
PRST
3
PSTBY
FSWstby
1
2
FSWnom
VCOMP
FSW
12/31
DocRev1
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