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E-L5991AD

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P23
4700pF 4KV 4700pF 4KV
4.7M
STP4NA60
4N35
220
2 x 330
µ
F
35V
1K
0.022
µ
F
2.7K
3.9K
28V / 0.7A
GND
470
µ
F
16V
BYW100-50
BYW98-100
BYW100-200
4.7M
12V / 1.5A
5V / 0.5A
C02
0.1
µ
F
C01
0.1
µ
F
F01 AC 250V T1A
85 TO
265 Vac
BD01
2.2
LF01
10K
1.1M
BC337
10
22
13
1K
12
470pF
11
0.47
1/2 W
33
µ
F/25V
8
91415
22
33K4.7K
47K
2
3
4
1
100nF
22K
3.3nF
16
7
330nF
470
470pF
6
BAT46
TL431
L5991
22V
1.1M
STK2N50
1N4937
5
5.6K
N1
N2
N3
N4
Naux
5.6K
5.6K
2 x 470
µ
F
16V
5.1K 270K
100
µ
F
400V
BZW06-154
D97IN618
VAC(V)
Pin(W)
Pout(W)
85
0.90
110
0.93
220
1.14
265
1.57
0.55
Figure 34. Typical application circuit for inkjet printers (40W).
L5991 - L5991A
16/23
L5991
12
413
SGND
VREF ISEN
OPTIONAL
D97IN751A
10
R
SENSE
R
A
R
Figure 35. Standby thresholds adjustment.
D97IN761
L5991
PGND
ISEN
OUT
V
C
SGND
V
IN
ISOLATION
BOUNDARY
10
9
13
1112
Figure 36. Isolated MOSFET Drive & Current Transformer Sensing in 2-switch Topologies.
L5991
V
REF
T
V
CC
V
IN
20V
D97IN762B
2.2MΩ 33KΩ
SELF-SUPPLY
WINDING
8
4
12 11
47KΩ
STD1NB50-1
Figure 37. Low consumption start-up.
D97IN763
L5991
PGND
ISEN
OUT
V
C
V
IN
9
10
13
11
8
V
CC
Figure 38. Bipolar transistor driver.
L5991 - L5991A
17/23
D97IN507
+
-
EA
R
i
+
1.3mA
R
d
R
2R
12
C
f
R
f
6
5
From V
O
2.5V
+
-
EA
R
P
+
1.3mA
R
d
R
2R
12
C
f
R
f
6
5
From V
O
2.5V
Error Amp compensation circuit for stabilizing any current-mode topology except
for boost and flyback converters operating with continuous inductor current.
C
P
R
i
Error Amp compensation circuit for stabilizing current-mode boost and flyback
topologies operating with continuous inductor current.
VFB
VFB
COMP
COMP
SGND
SGND
Figure 39. Typical E/A compensation networks.
L5991
COMP
D97IN759
TL431
V
OUT
VFB
6
5
Figure 40. Feedback with optocoupler.
L5991
OPTIONAL
D97IN760A
I
V
REF
SGND
R
A
C
T
RCT
R
SLOPE
R
SENSE
ISEN
L5991
OPTIONAL
I
V
REF
SGND
R
A
C
T
RCT
R
SLOPE
R
SENSE
ISEN
L5991
OPTIONAL
OUT
SGND
R
R
SLOPE
R
SENSE
ISEN
C
SLOPE
4
2
13
12
4
2
13
12
13
12
10
R
B
16
ST-BY
16
ST-BY
R
B
Figure 41. Slope compensation techniques.
L5991 - L5991A
18/23
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P23

E-L5991AD

Mfr. #:
Buy E-L5991AD
Manufacturer:
STMicroelectronics
Description:
Switching Controllers Prog Current Mode
Lifecycle:
New from this manufacturer.
Delivery:
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