Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

SG2842N Datasheet(PDF) 11 Page - Microsemi Corporation

Part # SG2842N
Description  CURRENT MODE PWM CONTROLLER
Download  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

SG2842N Datasheet(HTML) 11 Page - Microsemi Corporation

Back Button SG2842N Datasheet HTML 6Page - Microsemi Corporation SG2842N Datasheet HTML 7Page - Microsemi Corporation SG2842N Datasheet HTML 8Page - Microsemi Corporation SG2842N Datasheet HTML 9Page - Microsemi Corporation SG2842N Datasheet HTML 10Page - Microsemi Corporation SG2842N Datasheet HTML 11Page - Microsemi Corporation SG2842N Datasheet HTML 12Page - Microsemi Corporation SG2842N Datasheet HTML 13Page - Microsemi Corporation SG2842N Datasheet HTML 14Page - Microsemi Corporation  
Zoom Inzoom in Zoom Outzoom out
 11 / 14 page
background image
C URRENT -M ODE PWM C ONTROLLER
SG1842/SG1843 Series
PRODUCT DA T ABOOK 1996/1997
11
Copyright © 2000
Rev. 1.6
4/00
P RODUCTION D ATA S HEET
TYPICAL APPLICA TION CIRCUITS
FIGURE 18. — ISOLATED MOSFET DRIVE
FIGURE 17. — BIPOLAR TRANSISTOR DRIVE
Current transformers can be used where isolation is required
between PWM and Primary ground. A drive transformer is then
necessary to interface the PWM output with the MOSFET.
The 1842/43 output stage can provide negative base current to
remove base charge of power transistor (Q
1) for faster turn off.
This
is accomplished by adding a capacitor (C
1) in parallel with a resistor
(R
1).
The resistor (R
1) is to limit the base current during turn on.
Pin numbers referenced are for 8-pin package and pin numbers in parenthesis are for 14-pin package.
FIGURE 15. — CURRENT-SENSE SPIKE SUPPRESSION
FIGURE 16. — MOSFET PARASITIC OSCILLATIONS
A resistor (R
1) in series with the MOSFET gate reduce overshoot and
ringing caused by the MOSFET input capacitance and any induc-
tance in series with the gate drive. (Note: It is very important to
have a low inductance ground path to insure correct operation of
the I.C. This can be done by making the ground paths as short and
as wide as possible.)
The RC low pass filter will eliminate the leading edge current spike
caused by parasitics of Power MOSFET.
V
CC
V
IN
7 (12)
7 (11)
6 (10)
5 (8)
3 (5)
R
C
R
S
Q1
I
PK
I
PK(MAX) =
1.0V
R
S
SG1842/43
V
IN
V
CC
7 (12)
7 (11)
6 (10)
5 (8)
R
S
Q1
SG1842/43
3 (5)
R
1
SG1842/43
3 (5)
5 (8)
6 (10)
7 (11)
R
S
Q1
V
C1
C
1
R
1
R
2
V
IN
V
C
I
B
+
V
C
R
2
»
V
C1
R
1||R2
»
_
V
CC
V
IN
7 (12)
7 (11)
6 (10)
5 (8)
3 (5)
SG1842/43
Isolation
Boundary
C
R
R
S
N
S
N
P
Q1
Waveforms
+
_0
+
_0
50% DC
25% DC
I
PK =
V (PIN 1) - 1.4
3R
S
N
P
N
S


Similar Part No. - SG2842N

ManufacturerPart #DatasheetDescription
logo
Microsemi Corporation
SG2842N MICROSEMI-SG2842N Datasheet
313Kb / 14P
   CURRENT MODE PWM CONTROLLER
More results

Similar Description - SG2842N

ManufacturerPart #DatasheetDescription
logo
NXP Semiconductors
UC3842 PHILIPS-UC3842 Datasheet
74Kb / 8P
   Current-mode PWM controller
August 31, 1994
logo
Daewoo Semiconductor
DBL3842 DAEWOO-DBL3842 Datasheet
467Kb / 8P
   CURRENT MODE PWM CONTROLLER
logo
BCD Semiconductor Manuf...
AP384XC BCDSEMI-AP384XC Datasheet
176Kb / 13P
   CURRENT MODE PWM CONTROLLER
logo
Cystech Electonics Corp...
MC7731N6 CYSTEKEC-MC7731N6 Datasheet
363Kb / 10P
   Current Mode PWM Controller
logo
BCD Semiconductor Manuf...
AP3842C BCDSEMI-AP3842C Datasheet
359Kb / 14P
   CURRENT MODE PWM CONTROLLER
logo
Texas Instruments
UC1846AJ TI-UC1846AJ Datasheet
3Mb / 13P
[Old version datasheet]   Current Mode PWM Controller
UC3844Q TI1-UC3844Q Datasheet
708Kb / 28P
[Old version datasheet]   CURRENT MODE PWM CONTROLLER
UC1843 TI-UC1843 Datasheet
937Kb / 3P
[Old version datasheet]   Current Mode PWM Controller
UC2846J TI-UC2846J Datasheet
463Kb / 8P
[Old version datasheet]   Current Mode PWM Controller
logo
List of Unclassifed Man...
AMC3842B ETC-AMC3842B Datasheet
365Kb / 10P
   CURRENT MODE PWM CONTROLLER
CM3842 ETC-CM3842 Datasheet
638Kb / 12P
   CURRENT MODE PWM CONTROLLER
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   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