Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

UC2855BDWG4 Fiches technique(PDF) 6 Page - Texas Instruments

No de pièce UC2855BDWG4
Description  High Performance Power Factor Preregulator
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

UC2855BDWG4 Fiches technique(HTML) 6 Page - Texas Instruments

Back Button UC2855BDWG4 Datasheet HTML 2Page - Texas Instruments UC2855BDWG4 Datasheet HTML 3Page - Texas Instruments UC2855BDWG4 Datasheet HTML 4Page - Texas Instruments UC2855BDWG4 Datasheet HTML 5Page - Texas Instruments UC2855BDWG4 Datasheet HTML 6Page - Texas Instruments UC2855BDWG4 Datasheet HTML 7Page - Texas Instruments UC2855BDWG4 Datasheet HTML 8Page - Texas Instruments UC2855BDWG4 Datasheet HTML 9Page - Texas Instruments UC2855BDWG4 Datasheet HTML 10Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 6 / 12 page
background image
6
UC2855A/B
UC3855A/B
ZVS: This pin senses when the drain voltage of the main
MOSFET switch has reached approximately zero volts,
and resets the ZVT latch via the ZVT comparator. A mini-
mum and maximum ZVTOUT pulse width are program-
mable from this pin. To directly sense the
≈400V drain
voltage of the main switch, a blocking diode is connected
between ZVS and the high voltage drain. When the drain
reaches 0V, the level on ZVS is
≈0.7V which is below the
2.6V ZVT comparator threshold. The maximum ZVTOUT
pulse width is approximately equal to the oscillator blank-
ing period time.
ZVTOUT: The output of the ZVT block is a 750mA peak
totem pole MOSFET gate driver on ZVTOUT. Since the
ZVT MOSFET switch is typically 3X smaller than the
main switch, less peak current is required from this out-
put. Like GTOUT, a series gate resistor and Schottky di-
ode to GND are recommended. This pin may also be
used as a high current synchronization output driver.
PIN DESCRIPTIONS (cont.)
log f
-60
-40
-20
0
20
40
60
0
80
-45
Phase
Degrees
100
-90
120
10kHz
1MHz
10MHz
100kHz
Gain
Phase
5.992 496 516 MHz
Figure 1. Current Amplifier Frequency Response
Frequency
kHz
Phase
Margin
degrees
Open-Loop
Gain
dB
-20
0
20
40
60
80
100
120
0.1
1
10
100
1000
10000
Figure 2. Voltage Amplifier Gain Phase vs Frequency
10
12
14
16
18
20
22
24
-60 -40 -20
0
20 40 60
80 100 120 140
TEMPERATURE °C
Figure 4. Supply Current ON
2.90
2.92
2.94
2.96
2.98
3.00
3.02
3.04
3.06
3.08
3.10
-60 -40 -20
0
20 40 60 80 100 120 140
TEMPERATURE °C
Figure 3. Voltage Amplifier Input Threshold
For more information see Unitrode Applications Note U-153.


Numéro de pièce similaire - UC2855BDWG4

FabricantNo de pièceFiches techniqueDescription
logo
Texas Instruments
UC2855BDWG4 TI1-UC2855BDWG4 Datasheet
1Mb / 17P
[Old version datasheet]   High Performance Power Factor Preregulator
More results

Description similaire - UC2855BDWG4

FabricantNo de pièceFiches techniqueDescription
logo
Texas Instruments
UC3855ADWG4 TI1-UC3855ADWG4 Datasheet
1Mb / 17P
[Old version datasheet]   High Performance Power Factor Preregulator
UC2853A TI-UC2853A Datasheet
411Kb / 10P
[Old version datasheet]   High Power Factor Preregulator
UC1854 TI-UC1854 Datasheet
281Kb / 9P
[Old version datasheet]   High Power Factor Preregulator
UC2853A TI1-UC2853A_16 Datasheet
854Kb / 9P
[Old version datasheet]   High Power Factor Preregulator
UC1854 TI-UC1854_08 Datasheet
473Kb / 13P
[Old version datasheet]   High Power Factor Preregulator
logo
TOKO, Inc
TK83854 TOKO-TK83854 Datasheet
109Kb / 12P
   HIGH POWER FACTOR PREREGULATOR
logo
Texas Instruments
UC1853 TI1-UC1853_08 Datasheet
401Kb / 10P
[Old version datasheet]   High Power Factor Preregulator
UC1852 TI-UC1852 Datasheet
210Kb / 6P
[Old version datasheet]   High Power-Factor Preregulator
UC1852 TI-UC1852_V01 Datasheet
802Kb / 10P
[Old version datasheet]   High Power-Factor Preregulator
UC3854N-F TI1-UC3854N-F Datasheet
312Kb / 12P
[Old version datasheet]   High Power Factor Preregulator
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
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