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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VIPER06
7
Power section
The power section is implemented with an N-channel power MOSFET with a breakdown
voltage of 800 V min. and a typical R
virtually lossless current sensing and the thermal sensor.
The gate driver of the power MOSFET is designed to supply a controlled gate current during
both turn-ON and turn-OFF in order to minimize common-mode EMI. During UVLO
conditions, an internal pull-down circuit holds the gate low in order to ensure that the power
MOSFET cannot be turned ON accidentally.
8
High voltage current generator
The high-voltage current generator is supplied by the DRAIN pin. At the first startup of the
converter it is enabled when the voltage across the input bulk capacitor reaches the
V
threshold, sourcing a I
DRAIN_START
voltage reaches the V
voltage current generator is turned OFF. The VIPER06 is powered by the energy stored in
the V
capacitor.
DD
In a steady-state condition, if the self-biasing function is used, the high-voltage current
generator is activated between V
I
, see
Table 6 on page 7
DDch2
Figure
21).
The device can also be supplied through the auxiliary winding in which case the high-
voltage current source is disabled during steady-state operation, provided that VDD is
above V
.
DDCSon
At converter power-down, the V
below the V
DDoff
Figure 21. Power-on and power-off
V
IN
V
DRAIN_START
V
DD
V
DDon
V
DDCSon
V
DDoff
V
DRAIN
I
DD
I
DDch2
I
DDch1
of 32 Ω . It includes a SenseFET structure to allow
DS(on)
current (see
DDch1
threshold, the power section starts switching and the high-
DDon
and V
DDCSon
DDon
to the V
capacitor during the MOSFET off-time (see
DD
voltage drops and the converter activity stops as it falls
DD
threshold (see
Table 6 on page
With internal self-supply
Without internal self-supply
Normal operation
Power-on
Doc ID 022794 Rev 1
Power section
Table 6 on page
7). As the V
(see
Table 6 on page
7), delivering
7).
V
< V
IN
DRAIN_START
HV startup is no more activated
regulation is lost here
Power-off
DD
t
t
t
t t
t
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