Electronic Components Datasheet Search
  New Zealand  ▼
ALLDATASHEET.CO.NZ

X  

Preview PDF HTML

AN4213 Datasheet(PDF) 19 Page - STMicroelectronics

Part # AN4213
Description  Fluorescent lamps are increasingly driven by electronic
PDF  42 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4213 Datasheet(HTML) 19 Page - STMicroelectronics

Back Button AN4213 Datasheet HTML 15Page - STMicroelectronics AN4213 Datasheet HTML 16Page - STMicroelectronics AN4213 Datasheet HTML 17Page - STMicroelectronics AN4213 Datasheet HTML 18Page - STMicroelectronics AN4213 Datasheet HTML 19Page - STMicroelectronics AN4213 Datasheet HTML 20Page - STMicroelectronics AN4213 Datasheet HTML 21Page - STMicroelectronics AN4213 Datasheet HTML 22Page - STMicroelectronics AN4213 Datasheet HTML 23Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 19 / 42 page
background image
DocID023984 Rev 2
19/42
AN4213
Designing a TM PFC
In this way, the resistor divider will be such that
Equation 33
supposing a 200 μA current flowing into the multiplier divider, R
MULTL
is calculated as
follows:
Equation 34
Taking into account this value and from
Equation 33:
Equation 35
The selected values are R
MULTL
= 8.2 k
Ω and R
MULTH
= 2 M
Ω
Pin 5 (ZCD): zero-current detection
Figure 9. ZCD resistor
The zero-current detection (ZCD) block switches the external Power MOSFET on as the
voltage across the boost inductor reverses, just after the current through the boost inductor
has gone to zero. This feature allows transition mode operation. The ZCD pin is connected
to the auxiliary winding of the inductor boost through a limiting resistor.
3
max
max
10
24
.
3
265
41
.
1
21
.
1
2
−
∗
=
∗
=
=
+
=
AC
MULT
MULTH
MULTL
MULTL
p
V
V
R
R
R
k
Ω
=
∗
=
=
−
k
A
V
R
MULT
MULTL
2
.
6
10
200
21
.
1
200
6
μ
Ω
=
−
=
M
R
K
K
R
MULTL
P
P
MULTH
9
.
1
1
AM17323v1
Vin(Vac)
RMULTH
RMULTL
INV
1
COMP
2
3
MULT
4
CS
ZCD
GND
GD
VCC
5
6
7
8
L6562A



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 41 42


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
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