数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

VIPER25HN 数据表(PDF) 27 Page - STMicroelectronics

部件名 VIPER25HN
功能描述  Off-line high voltage converters
PDF  40 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

VIPER25HN 数据表(HTML) 27 Page - STMicroelectronics

Back Button VIPER25HN Datasheet HTML 23Page - STMicroelectronics VIPER25HN Datasheet HTML 24Page - STMicroelectronics VIPER25HN Datasheet HTML 25Page - STMicroelectronics VIPER25HN Datasheet HTML 26Page - STMicroelectronics VIPER25HN Datasheet HTML 27Page - STMicroelectronics VIPER25HN Datasheet HTML 28Page - STMicroelectronics VIPER25HN Datasheet HTML 29Page - STMicroelectronics VIPER25HN Datasheet HTML 30Page - STMicroelectronics VIPER25HN Datasheet HTML 31Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 27 / 40 page
background image
VIPER25
Operation description
Doc ID 15585 Rev 4
27/40
Equation 6
Where:
●
VOVP is the OVP threshold (see Table 8 on page 8)
●
VOUT OVP is the converter output voltage value to activate the OVP (set by designer)
designer
●
NAUX is the auxiliary winding turns
●
NSEC is the secondary winding turns
●
VDSEC is the secondary diode forward voltage
●
VDAUX is the auxiliary diode forward voltage
●
ROVP together RLIM make the output voltage divider
Than, fixed RLIM, according to the desired IDlim, the ROVP can be calculating by:
Equation 7
The resistor values will be such that the current sourced and sunk by the ZCD pin be within
the rated capability of the internal clamp.
Figure 33.
OVP timing diagram
k
OVP
R
LIM
R
LIM
R
OVP
+
----------------------------------
=
R
OVP
R
LIM
1k
OVP
–
k
OVP
-----------------------
×
=
t
VAUX
VOVP
t
t
t
STROBE
t
COUNTER
RESET
t
COUNTER
STATUS
t
0
ZCD
2 µs
0.5 µs
OVP
FAULT
0
0
0
0 →1
1 →2
2 →0
0 →1
1 →2
2 →3
3 →4
0
E
R
U
L
I
A
F
P
O
O
L
K
C
A
B
D
E
E
F
E
C
N
A
B
R
U
T
S
I
D
Y
R
A
R
O
P
M
E
T
N
O
I
T
A
R
E
P
O
L
A
M
R
O
N
t
t
t
t
STROBE
t
COUNTER
RESET
t
COUNTER
STATUS
t
0
2 µs
0.5 µs
OVP
FAULT
0
0
0
0 →1
1 →2
2 →0
0 →1
1 →2
2 →3
3 →4
0
E
R
U
L
I
A
F
P
O
O
L
K
C
A
B
D
E
E
F
E
C
N
A
B
R
U
T
S
I
D
Y
R
A
R
O
P
M
E
T
N
O
I
T
A
R
E
P
O
L
A
M
R
O
N
t



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com