L5991 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L5991' PDF : 23 Pages View PDF
Figure 35. Standby thresholds adjustment.
L5991 - L5991A
SGND
L5991 10
12
4
13
VREF
ISEN R
RA
D97IN751A
OPTIONAL
RSENSE
Figure 36. Isolated MOSFET Drive & Current Transformer Sensing in 2-switch Topologies.
VC
9
VIN
ISOLATION
BOUNDARY
10 OUT
L5991
ISEN
13
12
PGND
11
SGND
Figure 37. Low consumption start-up.
VIN
D97IN761
2.2MΩ
33KΩ
STD1NB50-1
VCC
20V
VREF
4
8
47KΩ
L5991
12 11
D97IN762B
Figure 38. Bipolar transistor driver.
VCC
8
L5991
VC
9
10 OUT
13
11
PGND
ISEN
D97IN763
T
SELF-SUPPLY
WINDING
VIN
17/23
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