Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

SI9913DB Datasheet(PDF) 7 Page - Vishay Siliconix

No. de pieza SI9913DB
Descripción Electrónicos  Half-Bridge MOSFET Driver for Switching Power Supplies
Download  9 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  VISHAY [Vishay Siliconix]
Página de inicio  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SI9913DB Datasheet(HTML) 7 Page - Vishay Siliconix

  SI9913DB Datasheet HTML 1Page - Vishay Siliconix SI9913DB Datasheet HTML 2Page - Vishay Siliconix SI9913DB Datasheet HTML 3Page - Vishay Siliconix SI9913DB Datasheet HTML 4Page - Vishay Siliconix SI9913DB Datasheet HTML 5Page - Vishay Siliconix SI9913DB Datasheet HTML 6Page - Vishay Siliconix SI9913DB Datasheet HTML 7Page - Vishay Siliconix SI9913DB Datasheet HTML 8Page - Vishay Siliconix SI9913DB Datasheet HTML 9Page - Vishay Siliconix  
Zoom Inzoom in Zoom Outzoom out
 7 / 9 page
background image
Si9913
Vishay Siliconix
Document Number: 71343
S-40133—Rev. B, 16-Feb-04
www.vishay.com
7
Bootstrap Supply Operation
(see Functional Block Diagram)
The power to drive the high-side MOSFET (Q2) gate comes
from the bootstrap capacitor (CBOOT). This capacitor charges
through D1 during the time when the low-side MOSFET is on
(VS is at GND potential ), and then provides the necessary
charge to turn on the high-side MOSFET. CBOOT should be
sized to be greater than ten times the high-side MOSFET gate
capacitance, and large enough to supply the bootstrap current
(IBOOT) during the high-side on time, without significant voltage
droop.
Synchronous Enable
The synchronous enable pin serves to enable and disable the
drive to the low-side MOSFET gate. With SYN high, the
low-side MOSFET is driven on and off in antiphase with the
high-side MOSFET to form a synchronous rectifier. This
improves efficiency at high load currents because the flyback
current is carried by the MOSFET, thus eliminating the diode
drop. With SYN low, the low-side MOSFET is held off all the
time. This is particularly useful for discontinuous operation
under light load or pulse skipping mode, where there is a long
off time, because it prevents current flowing back from the
output to ground during the off time.
Layout Considerations
There are a few critical layout considerations for these parts.
Firstly, the IC must be decoupled as closely as possible to the
power pins. Secondly the IC should be placed physically close
to the high- and low-side MOSFETs it is driving. The major
consideration is that the MOSFET gates must be charged or
discharged in a few nanoseconds, and the peak current to do
this is of the order of 1 A. This current must flow from the
decoupling and bootstrap capacitors to the IC, and from the
output driver pin to the MOSFET gate, returning from the
MOSFET source to the IC. The aim of the layout is to reduce
the parasitic inductance of these current paths as much as
possible. This is accomplished by making these traces as
short as possible, and also running trace and its current return
path adjacent to each other.
APPLICATIONS
FIGURE 1.
Typical Applications Schematic Circuit Used to Obtain Typical Rising and Falling Switching Waveforms
8
6
7
5
1
3
2
4
OUTH
GND
IN
SYN
VS
BOOT
VDD
OUTL
U1
Si9913
+5 V
C2
0.1 mF
PWM IN
GND
1 mF
C5
C1
0.1 mF
Enable
4
4
Q1
Si4412
Q2
Si4412
+VDC
L1
15 mH
0.1 mF
C3
15 mF
C4
GND
+
GND
RLOAD


Número de pieza similar - SI9913DB

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Vishay Siliconix
SI9913 VISHAY-SI9913 Datasheet
52Kb / 6P
   Dual MOSFET Bootstrapped Driver with Break-Before-Make
Rev. A, 21-Dec-00
More results

Descripción similar - SI9913DB

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Vishay Siliconix
SI9912 VISHAY-SI9912 Datasheet
95Kb / 8P
   Half-Bridge MOSFET Driver for Switching Power Supplies
Rev. B, 16-Feb-04
SI9912 VISHAY-SI9912_V01 Datasheet
166Kb / 10P
   Half-Bridge MOSFET Driver for Switching Power Supplies
01-Jan-2022
logo
Toshiba Semiconductor
TPD7211F TOSHIBA-TPD7211F Datasheet
253Kb / 13P
   Power MOSFET Gate Driver for half-bridge
TPD7211F TOSHIBA-TPD7211F_13 Datasheet
254Kb / 13P
   Power MOSFET Gate Driver for half-bridge
logo
Micrel Semiconductor
MIC5022 MICREL-MIC5022_05 Datasheet
198Kb / 10P
   Half-Bridge MOSFET Driver
MIC5022 MICREL-MIC5022 Datasheet
130Kb / 9P
   Half-Bridge MOSFET Driver
logo
Linear Dimensions Semic...
LT1158ISW LINEAR_DIMENSIONS-LT1158ISW Datasheet
250Kb / 22P
   Half Bridge N-Channel Power MOSFET Driver
logo
Linear Technology
LT1158 LINER-LT1158_15 Datasheet
250Kb / 22P
   Half Bridge N-Channel Power MOSFET Driver
logo
Linear Dimensions Semic...
LT1158CSW LINEAR_DIMENSIONS-LT1158CSW Datasheet
250Kb / 22P
   Half Bridge N-Channel Power MOSFET Driver
logo
Linear Technology
LT1158 LINER-LT1158 Datasheet
426Kb / 20P
   Half Bridge N-Channel Power MOSFET Driver
More results


Html Pages

1 2 3 4 5 6 7 8 9


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
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