STEVAL-ISA033V1 STMicroelectronics, STEVAL-ISA033V1 Datasheet - Page 19

• Manufacturer Part Number: STEVAL-ISA033V1
• Description: BOARD EVAL L5991/STP12NK80Z
• Manufacturer: STMicroelectronics
• Type: Supervisory Circuitsr

Specifications of STEVAL-ISA033V1

• Main Purpose: AC/DC, Primary Side
• Outputs And Type: 3, Isolated
• Power - Output: 55W
• Voltage - Output: 13.8V, 3.8V, 25V
• Current - Output: 3A, 350mA, 200mA
• Voltage - Input: 88 ~ 300VAC
• Regulator Topology: Flyback
• Board Type: Fully Populated
• Utilized Ic / Part: L5991, STP12NK80Z
• Input Voltage: 88 V to 300 V
• Output Voltage: 3.8 V to 25 V
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: L5991, STP12NK80Z
• Other names: 497-8226; STEVAL-ISA033V1

Figure 42. Protection against overvoltage/feedback disconnection (latched)
Figure 43 Protection against overvoltage/feed-
Figure 45. Constant power in pulse-by-pulse current limitation (flyback discontinuous)
Figure 46. Voltage mode operation.
back disconnection (not latched)
DIS
VREF
DC
14
R
12
START
V
PGND
CC
4
3
L5991
SGND
R
80
START
12
8
V
CC
L5991
V
400V
11
11
8
IN
L5991
PGND
D97IN754
OUT
SGND
11
DC
D97IN755A
10
12
13
10K
COMP
ISEN
DC
SGND
3
6
R
FF
L5991
12
R
Figure 44. Device shutdown on overcurrent
PGND
D97IN758A
L p
13
L5991
11
ISEN
V
SGND
Z
R SENSE
R
2.2K
12
FF
DIS
14
13
= 6·10
4
OPTIONAL
D97IN757
14
VREF
DIS
ISEN
R
12
START
6
V
CC
L5991
SGND
R SENSE
8
R·L p
R
1
11
D97IN756A
PGND
D98IN905
I
pk max
L5991 - L5991A
R
2
R
R
SENSE
I
SENSE
2.5
I
1-
pk
19/23
R
R
2
1