STEVAL-ISA062V1 STMicroelectronics, STEVAL-ISA062V1 Datasheet - Page 19

• Manufacturer Part Number: STEVAL-ISA062V1
• Description: BOARD EVAL BASED ON VIPER17
• Manufacturer: STMicroelectronics
• Series: VIPer™ plusr

Specifications of STEVAL-ISA062V1

• Main Purpose: AC/DC, Primary Side
• Outputs And Type: 2, Isolated
• Power - Output: 5.5W
• Voltage - Output: 5V, 12V
• Current - Output: 500mA, 250mA
• Voltage - Input: 85 ~ 264VAC
• Regulator Topology: Flyback
• Frequency - Switching: 115kHz
• Board Type: Fully Populated
• Utilized Ic / Part: VIPer17
• Input Voltage: 85 VAC to 264 VAC
• Output Voltage: 5 V, 12 V
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: 0 C
• Product: Power Management Modules
• Supply Current: 0.5 A, 0.25 A
• Silicon Manufacturer: ST Micro
• Silicon Core Number: VIPER17
• Kit Application Type: Power Management
• Application Sub Type: SMPS
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: VIPER17
• Other names: 497-9007

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