VIPER16 STMicroelectronics, VIPER16 Datasheet - Page 16

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VIPER16

Manufacturer Part Number
VIPER16
Description
VIPerPlus family: fixed frequency high performance off line high voltage converter
Manufacturer
STMicroelectronics
Datasheet

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13
16/25
Burst mode
When the voltage V
OFF state and the consumption is reduced to I
page
as it exceeds the threshold V
consumption level equal to I
mode” and reported on
down even to a few hundreds hertz, thus minimizing all frequency-related losses and
making it easier to comply with energy saving regulations. During the burst mode, the drain
current limit is reduced to the value I
avoid the audible noise issue.
Figure 24. Load-dependent operating modes: timing diagrams
Figure 23. COMP pin voltage versus I
6. As reaction at the energy delivery stop, the V
V
COMPL
+V
COMPL_HYS
I
V
V
Dlim_bm
I
COMPL
COMP
DRAIN
I
I
I
DD1
DD
DD0
COMP
Figure 24 on page
drops below the threshold, V
DD1
COMPL
Doc ID 15232 Rev 5
current. This ON-OFF operation mode, referred to as “burst
+ V
Dlim_bm
COMPL_HYS
DRAIN
16, reduces the average frequency, which can go
(reported on
DD0
Burst Mode
, the converter starts switching again with
current, as reported on
COMP
COMPL
Table 8 on page
voltage increases and as soon
, the power MOSFET is kept in
7) in order to
Table 7 on
time
time
time

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