Datenblatt-Suchmaschine für elektronische Bauteile
  German  ▼
ALLDATASHEETDE.COM

X  

Preview PDF HTML

L6722 Datenblatt(PDF) 25 Page - STMicroelectronics

Teilenummer L6722
Bauteilbeschribung  3 Phase controller for DC/DC converters
PDF  34 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6722 Datenblatt(HTML) 25 Page - STMicroelectronics

Back Button L6722 Datasheet HTML 21Page - STMicroelectronics L6722 Datasheet HTML 22Page - STMicroelectronics L6722 Datasheet HTML 23Page - STMicroelectronics L6722 Datasheet HTML 24Page - STMicroelectronics L6722 Datasheet HTML 25Page - STMicroelectronics L6722 Datasheet HTML 26Page - STMicroelectronics L6722 Datasheet HTML 27Page - STMicroelectronics L6722 Datasheet HTML 28Page - STMicroelectronics L6722 Datasheet HTML 29Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 25 / 34 page
background image
L6722
9 Output voltage monitor and protections
25/34
Where VoutMIN is the UVP threshold, (inductor saturation must be considered). When that
threshold is crossed, all mosfets are turned off, the FAULT pin is driven high and the device
stops working. Cycle the power supply or the INH pin to restart operation.
The maximum average current during the Constant-Current behavior results:
in this particular situation, the switching frequency for each phase results reduced. The ON time
is the maximum allowed TON(max) while the OFF time depends on the application:
The trans-conductance resistor RISENx can be designed considering that the device limits the
bottom of the inductor current ripple and also considering the additional current delivered
during the quasi-constant-current behavior as previously described in the worst case
conditions.
where
Figure 14. Constant current operation
PEAK
I
OCPx
V
IN
V
OUT min
()
–
L
-------------------------------------------
T
ON max
()
⋅
+
I
OCPx
V
IN
V
OUT min
()
–
L
-------------------------------------------
0.40
T
⋅
SW
⋅
+
==
MAX tot
,
3I
MAX
⋅
3I
OCPx
I
PEAK
I
OCPx
–
2
-------------------------------------
+
⎝
⎠
⎛
⎞
⋅
==
T
OFF
L
I
PEAK
I
OCPx
–
V
OUT
-------------------------------------
⋅
=
f
1
T
ON max
()
T
OFF
+
----------------------------------------------
=
R
ISENx
I
OCPx max
()
R
dsON max
()
⋅
I
OCTH min
()
---------------------------------------------------------------------
=
I
OCPx
I
OUT OCP
()
3
----------------------------
∆I
PP
2
------------
–
=
VOUT
0.40 VIN
Constant Current (Exploded)
IOCP = N x IOCPx
(IDROOP = N x 35µA)
IOUT
UVP Threshold
Resulting Out. Char.
IMAX,tot
Limted-TON Char.
Droop Effect
TON(max)
TON(max)
IOCPx
IMAX
IPEAK
LS ON Skipping
Clock Cycles
TSW
TSW



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


Datenblatt Download

Go To PDF Page


Link URL



War ALLDATASHEET hilfreich?  [ DONATE ] 

Über Alldatasheet   |   Werbung   |   Kontakt   |   Privatsphäre und Datenschutz   |   Link zum Datenblatt    |   Linktausch   |   Hersteller
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