Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

Preview PDF HTML

AN2982 Scheda tecnica(PDF) 5 Page - STMicroelectronics

Il numero della parte AN2982
Spiegazioni elettronici  This application note describes the STEVAL-ILB005V2 demonstration board equipped with the L6585DE lighting controller
PDF  31 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2982 Scheda tecnica(HTML) 5 Page - STMicroelectronics

  AN2982 Datasheet HTML 1Page - STMicroelectronics AN2982 Datasheet HTML 2Page - STMicroelectronics AN2982 Datasheet HTML 3Page - STMicroelectronics AN2982 Datasheet HTML 4Page - STMicroelectronics AN2982 Datasheet HTML 5Page - STMicroelectronics AN2982 Datasheet HTML 6Page - STMicroelectronics AN2982 Datasheet HTML 7Page - STMicroelectronics AN2982 Datasheet HTML 8Page - STMicroelectronics AN2982 Datasheet HTML 9Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 31 page
background image
AN2982
Designing the application
Doc ID 15599 Rev 1
5/31
1.2
PFC design
1.2.1
Output voltage and dynamic OVP
The maximum input voltage is equal to:
Equation 1
An output voltage equal to Vout = 420 V is chosen for better PFC performance.
Choosing Rinvh = 3 x 2.2 MΩ, the output voltage is equal to:
Equation 2
The ripple superimposed on Vout is chosen equal to 5%. Then, the maximum instantaneous
output voltage is equal to 441 V and, therefore, the OVP level must be comprised between
450 V and 500 V.
–VOVP = 480 V is chosen and the CTR pin voltage divider is dimensioned
accordingly
–Rctrh = 3 x 825 kΩ
Equation 3
1.2.2
Boost choke design
The minimum PFC frequency is chosen equal to fPFC,min > 15 kHz. The maximum
inductance value is equal to:
Equation 4
Lpfc = 1.5 mH is selected. The following graph depicts the frequencies that are obtained
along the mains period for various input voltages.
V
7
.
391
2
V
277
V
max
,
in
=
⋅
=
→
Ω
=
⎟
⎠
⎞
⎜
⎝
⎛
−
=
→
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
+
⋅
=
39839
1
V
52
.
2
V
R
R
R
R
1
V
52
.
2
V
out
invh
invl
invl
invh
out
R
invi
39.7 k
Ω
=
→
Ω
=
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
=
→
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
+
⋅
=
17656
1
V
4
.
3
V
R
R
R
R
1
V
4
.
3
V
MAX
,
OUT
ctrh
ctrl
ctrl
ctrh
OVP
R
invi
18 k
Ω
=
mH
6
.
2
V
V
2
1
f
P
2
V
L
V
V
2
1
L
P
2
V
f
out
in
min
,
PFC
in
2
in
out
in
in
2
in
min
,
PFC
=
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
⋅
−
⋅
⋅
⋅
≤
→
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
⋅
−
⋅
⋅
⋅
=



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


Scheda tecnica Scarica

Go To PDF Page


Link URL



Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   Collegamento alla scheda tecnica    |   scambio Link   |   Ricerca produttore
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