VIPER06XN

Manufacturer Part NumberVIPER06XN
DescriptionAC/DC Switching Converters VIPer 800V Plus Fixed Freq 30kHz
ManufacturerSTMicroelectronics
TypePWM Low-Standby High Performance Controller
VIPER06XN datasheet
 


Specifications of VIPER06XN

RohsyesOutput Voltage800 V
Input / Supply Voltage (max)23.5 VInput / Supply Voltage (min)11.5 V
Switching Frequency30 kHzSupply Current1.3 mA
Operating Temperature Range- 40 C to + 150 CMounting StyleThrough Hole
Package / CaseDIP-7Maximum Operating Temperature+ 125 C
Minimum Operating Temperature- 25 CNumber Of Outputs1
Output Power30 mWFactory Pack Quantity50
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Open-loop failure protection
15
Open-loop failure protection
If the power supply has been designed using flyback topology and the VIPER06 is supplied
by an auxiliary winding, as shown in
protected against feedback loop failure or accidental disconnections of the winding.
The following description is applicable for the schematics of
page
21, respectively the non-isolated flyback and the isolated flyback.
If R
is open or R
H
voltage, V
, will increase as does the auxiliary voltage, V
OUT
output through the secondary-to-auxiliary turns ratio.
As the auxiliary voltage increases up to the internal V
given in
Table 7 on page
threshold, I
(the value is given in
DDol
generated.
In order to distinguish an actual malfunction from a bad auxiliary winding design, both the
above conditions (drain current equal to the drain current limitation and current higher than
I
through the VDD clamp) have to be verified to reveal the fault.
DDol
If R
is open or R
L
voltage V
REF_FB
isolated flyback).
Figure 27. FB pin connection for non-isolated flyback
R
H
R
L
20/28
Figure 27
is shorted, the VIPER06 works at its drain current limitation. The output
L
8) and the clamp current injected on the VDD pin exceeds the latch
Table 7 on page
is shorted, the output voltage, V
H
(for non-isolated flyback) or to the external TL voltage reference (for
C
VDD
VDD
V
OUT
BUS
FB
-
E/A
V
+
REF_FB
COMP
C
P
Doc ID 022794 Rev 1
and
Figure 28 on page
21, the converter is
Figure 27
and
Figure 28 on
, which is coupled with the
AUX
active clamp, V
DD
DDclamp
8), a fault signal is internally
, will be clamped to the reference
OUT
D
R
AUX
AUX
V
PWM stop
COMPL
+
-
from R
SENSE
to PWM
+
nR
-
R
R
S
C
S
VIPER06
(the value is
V
AUX