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DAP002 数据表(PDF) 19 Page - STMicroelectronics

部件名 DAP002
功能描述  PRIMARY CONTROLLER WITH STANDBY
PDF  23 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

DAP002 数据表(HTML) 19 Page - STMicroelectronics

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Figure 42. Protection against overvoltage/feedback disconnection (latched)
L5991
D97IN755A
DC
VCC
VREF
RSTART
3
12
8
4
11
Figure 43 Protection against overvoltage/feed-
back disconnection (not latched)
D97IN756A
PGND
L5991
OPTIONAL
VREF
SGND
DIS
ISEN
I
4
14
13
12
11
RSENSE
R2
R1
Ipk
Ipk max ≅
2.5
RSENSE
1-
R2
R1
•
Figure 44. Device shutdown on overcurrent
D97IN757
PGND
L5991
OUT
SGND
ISEN
Lp
RFF
R
VIN
RFF = 6·10
6
R·Lp
RSENSE
RSENSE
13
10
12
11
80
÷ 400V
DC
Figure 45. Constant power in pulse-by-pulse current limitation (flyback discontinuous)
L5991
DC
10K
COMP
3
6
12
13
SGND
ISEN
D97IN758A
Figure 46. Voltage mode operation.
L5991
D98IN905
SGND
DIS
VCC
RSTART
PGND
8
14
12
11
VZ
2.2K
L5991
D97IN754
SGND
DIS
VCC
RSTART
PGND
8
14
12
11
L5991 - L5991A
19/23



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