поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

Preview PDF HTML

FDMF2011 датащи(PDF) 26 Page - ON Semiconductor

номер детали FDMF2011
подробное описание детали  High Performance 100V Smart Power Stage Module
PDF  31 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  ONSEMI [ON Semiconductor]
домашняя страница  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

FDMF2011 датащи(HTML) 26 Page - ON Semiconductor

Back Button FDMF2011 Datasheet HTML 22Page - ON Semiconductor FDMF2011 Datasheet HTML 23Page - ON Semiconductor FDMF2011 Datasheet HTML 24Page - ON Semiconductor FDMF2011 Datasheet HTML 25Page - ON Semiconductor FDMF2011 Datasheet HTML 26Page - ON Semiconductor FDMF2011 Datasheet HTML 27Page - ON Semiconductor FDMF2011 Datasheet HTML 28Page - ON Semiconductor FDMF2011 Datasheet HTML 29Page - ON Semiconductor FDMF2011 Datasheet HTML 30Page - ON Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 26 / 31 page
background image
© 2016 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FDMF2011 Rev.1.0
25
•
Switching losses - Rising and falling time
by
parasitic
inductance
can
be
measured in the application, listed below
assumed zero inductance.
Switching OFF loss
Switching ON loss
•
Gate drive loss
•
Quiescent current power loss – Current
is still drawn from the VDD and HB pins
for internal and level shifting circuitry
without load (RG=Open). Power loss by
quiescent current is
•
Supply current power loss(RG=0Ω) is
•
Total power loss in the FDMF2011 is
equal to the power dissipation caused by
gate driver and Power MOSFETs,
Once the designer estimates power dissipation
in the gate driver and MOSFETs, junction
temperature can be calculated using thermal
resistance (ΘJA) and ambient temperature as
followings and also can calculate maximum
allowable motor current:
Continuous current flowing out of
SW node
Continuous current flowing out of the module
SW node is typical of a heavily loaded switched-
mode power stage that is operating in a
synchronous buck converter topology. In this
mode, the power stage is supplying current from
VIN into an inductive load. Figure 66 shows and
example
of
a
synchronous
buck
convert
operating in CCM with positive inductor current.
Figure 66. Synchronous Buck Operating
in CCM with positive inductor current
During this operating mode, the HS MOSFET
(Q1)
will undergo
hard-switched
inductive
turn-on and turn-off events, while LS MOSFET
(Q2) will undergo soft switching and body
diode recovery. Hard-switching often results in
large switching spikes on Q1 and Q2 VDS as
well as PH to VSS and BOOT to VSS pins.
Peak switching spikes are often positively
correlated to load current.
Continuous current flowing into
SW node.
Continuous current flowing into the module
SW node is typical of a heavily loaded
switched-mode power stage that is operating
in a synchronous boost converter topology.
Continuous inductor current flowing in to the
module SW node is typical operation of a
synchronous boost converter, as shown in
Figure 67.
)
R
/(R
V
i
;
)/i
Q
(Q
t
:
where
F
)
2
t
I
V
(
P
DRV_OFF
GH
PLATEAU
G(OFF)
G(OFF)
GD
GS2
OFF
SW
OFF
DS(OFF)
IN
SW(OFF)
+
=
+
=
⋅
⋅
⋅
=
Charge
Output
Qoss
)
R
/(R
V
i
;
)/i
Q
(Q
t
:
where
F
)
2
V
Qoss
2
t
I
V
(
P
DRV_ON
G
PLATEAU
G(ON)
G(ON)
GD
GS2
ON
SW
IN
ON
DS(ON)
IN
SW(ON)
=
+
=
+
=
⋅
⋅
+
⋅
⋅
=
SW
DRV
G
GATE
F
V
Q
P
⋅
⋅
=
HBO
HB
DDO
DD
supply
I
V
I
V
P
⋅
+
⋅
=
HBQ
HB
DDQ
DD
Quiescent
I
V
I
V
P
⋅
+
⋅
=
supply
Gate
SW
Cond
total
P
P
P
P
P
+
+
+
=
)
P
(
T
T
total
JA
A
j
⋅
Θ
+
=



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


датащи скачать

Go To PDF Page


ссылки URL



Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   Ссылка на техническое описание    |   обмен ссыками   |   поиск по производителю
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