EVLVIPER28L-10W STMicroelectronics, EVLVIPER28L-10W Datasheet - Page 19
EVLVIPER28L-10W
Manufacturer Part Number
EVLVIPER28L-10W
Description
EVAL BOARD FOR VIPER28LD 60KHZ
Manufacturer
STMicroelectronics
Series
VIPER™r
Type
AC/DC Switching Convertersr
Specifications of EVLVIPER28L-10W
Main Purpose
AC/DC, Primary Side
Outputs And Type
1, Isolated
Power - Output
12W
Voltage - Output
5V
Current - Output
2.4A
Voltage - Input
85 ~ 265VAC
Regulator Topology
Flyback
Frequency - Switching
60kHz
Board Type
Fully Populated
Utilized Ic / Part
VIPer28
Input Voltage
85 V to 265 V
Output Voltage
5 V
Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
VIPER28LN
Other names
497-8840
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
VIPER28
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 22. OVP timing diagram
COUNTER
COUNTER
COUNTER
COUNTER
STATUS
STATUS
STROBE
STROBE
RESET
RESET
V CONT
FAULT
FAULT
V AUX
V
V
V
OVP
OVP
OVP
DS
DS
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 15028 Rev 4
T
T
E
E
M
M
P
P
O
O
R
R
R
A
A
OVP
R
R
Y
Y
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
LIM
2 →0
2 →0
C
C
E
E
, the R
×
1 k
---------------------- -
–
k
OVP
0
0
OVP
OVP
8)
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
19/32
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t