VIPER17HN STMicroelectronics, VIPER17HN Datasheet - Page 19
VIPER17HN
Manufacturer Part Number
VIPER17HN
Description
IC OFFLINE CONV PWM OVP OCP 8DIP
Manufacturer
STMicroelectronics
Series
VIPer™ plusr
Datasheet
1.VIPER17LDTR.pdf
(31 pages)
Specifications of VIPER17HN
Output Isolation
Isolated
Frequency Range
103 ~ 127kHz
Voltage - Input
8.5 ~ 23.5 V
Voltage - Output
800V
Power (watts)
12W
Operating Temperature
-40°C ~ 150°C
Package / Case
8-DIP (0.300", 7.62mm), 7 Leads
Output Voltage
800 V
Output Power
1 W
Input Voltage
- 0.3 V
Switching Frequency
115 KHz
Operating Temperature Range
- 40 C to + 150 C
Mounting Style
Through Hole
Duty Cycle (max)
80 %
Number Of Outputs
1
For Use With
497-9050 - BOARD DEMO BASED ON VIPER17HN497-9007 - BOARD EVAL BASED ON VIPER17497-8513 - BOARD EVAL VIPER17HN 6W SMPS497-8250 - BOARD EVAL FOR VIPER17497-6447 - BOARD EVAL FOR VIPER17L497-6446 - BOARD EVAL FOR VIPER17H
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-6950-5
VIPER17HN
VIPER17HN
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
VIPER17HN
Manufacturer:
DIODES
Quantity:
21 400
Company:
Part Number:
VIPER17HN
Manufacturer:
STMicroelectronics
Quantity:
1 970
Part Number:
VIPER17HN
Manufacturer:
ST
Quantity:
20 000
VIPER17
Equation 3
Where:
●
●
●
●
●
●
●
Than, fixed R
Equation 4
The resistor values will be such that the current sourced and sunk by the CONT pin be
within the rated capability of the internal clamp.
Figure 26. OVP timing diagram
COUNTER
COUNTER
COUNTER
COUNTER
STATUS
STATUS
STROBE
STROBE
RESET
RESET
V CONT
FAULT
FAULT
V AUX
V
OVP
OVP
OVP
V
V
N
N
V
V
R
OVP
OUT OVP
DSEC
DAUX
AUX
SEC
OVP
0
0
0
0
is the OVP threshold (see
N
N
is the auxiliary winding turns
is the secondary winding turns
together R
O
O
is the auxiliary diode forward voltage
is the secondary diode forward voltage
R
R
M
M
LIM,
A
A
2 µs
2 µs
L
L
is the converter output voltage value to activate the OVP (set by designer)
O
O
0
0
P
P
E
E
according to the desired I
R
R
A
A
T
T
O I
O I
N
N
LIM
0.5 µs
0.5 µs
0
0
make the output voltage divider
0 →1
0 →1
Doc ID 14419 Rev 7
T
T
E
E
M
M
P
P
O
O
R
R
R
A
A
OVP
k
R
R
Y
Y
OVP
Table 8 on page
1 →2
1 →2
D
D
S I
S I
T
T
=
U
U
R
R
=
B
B
R
A
A
DLIM
N
N
--------------------------------- -
R
LIM
2 →0
2 →0
C
C
E
E
LIM
, the R
R
×
+
LIM
1 k
---------------------- -
R
–
k
OVP
OVP
0
0
OVP
8)
OVP
can be calculating by:
0 →1
0 →1
F
F
E
E
E
E
D
D
B
B
A
A
1 → 2
1 → 2
C
C
Operation descriptions
K
K
L
L
O
O
O
O
P
P
F
F
A
A
L I
L I
2 →3
2 →3
U
U
R
R
E
E
3 → 4
3 → 4
19/31
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t