Datenblatt-Suchmaschine für elektronische Bauteile
  German  ▼
ALLDATASHEETDE.COM

X  

CA3272AM Datenblatt(PDF) 5 Page - Intersil Corporation

Teilenummer CA3272AM
Bauteilbeschribung  Quad-Gated Inverting Power Drivers with Fault Mode Diagnostic Flag Output
Download  10 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Hersteller  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

CA3272AM Datenblatt(HTML) 5 Page - Intersil Corporation

  CA3272AM Datasheet HTML 1Page - Intersil Corporation CA3272AM Datasheet HTML 2Page - Intersil Corporation CA3272AM Datasheet HTML 3Page - Intersil Corporation CA3272AM Datasheet HTML 4Page - Intersil Corporation CA3272AM Datasheet HTML 5Page - Intersil Corporation CA3272AM Datasheet HTML 6Page - Intersil Corporation CA3272AM Datasheet HTML 7Page - Intersil Corporation CA3272AM Datasheet HTML 8Page - Intersil Corporation CA3272AM Datasheet HTML 9Page - Intersil Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 10 page
background image
5
Applications
The CA3272A and CA3292A are quad-gated inverting low-
side power drivers with a fault diagnostic flag output. Both
circuits are rated for 125oC ambient temperature applica-
tions and have current limiting and thermal shutdown. While
functionally similar to the CA3262AQ, they differ in the mode
of over-voltage protection and have the added feature of a
FAULT flag output. Also, as shown in Figure 1, the inputs to
channels A, B, C, D and ENABLE have internal pulldowns to
turn “OFF” the outputs when the inputs are floating.
As noted in the Block Diagrams, the CA3292A is equivalent
to the CA3272A except that it has internal clamp diodes on
the outputs to handle inductive switching pulses from the
output load. The structure of each CA3292A output includes
a Zener diode from collector-to-base of the output transistor.
This is a different form of protection from other quad drivers
with current steering clamp diodes on each output, paired to
one of two “CLAMP” output pins. The CA3292A output tran-
sistor will turn-on at the Zener diode clamp voltage threshold
which is typically 32V and the output transistor will dump the
pulse energy through the output driver to ground.
Each output driver is capable of switching 600mA load currents
and operate at 125oC ambient temperature without interaction
between the outputs. The CA3272A and CA3292A can drive
four incandescent lamp loads without modulating their brilliance
when the “cold” lamps are energized. The outputs can be con-
nected in parallel to drive larger loads. Over-current or short cir-
cuit output load conditions are fault protected by current limiting
with a typical limit value of 1.2A. The current limiting range is
set for 0.6A to 1.6A. The output stage does not change state
(oscillate) when in the current limit mode.
Any one output that faults (see Fault Logic Table) will switch the
FAULT output at pin 1 to a constant current pull-down.
The Fault Logic circuit, as shown in the Block Diagram for
the CA3292A, applies to both the CA3272A and CA3292A.
The Fault Sense circuits do not override or control the power
switching circuits of the IC. Their primary function is to pro-
vide an external diagnostic fault flag output. Each Power
Switching Channel has diagnostic fault sensing input to the
Fault Logic. The Fault Logic block of the functional Block Dia-
gram illustrates the logic functions associated with Fault
detection. The diagnostic output for each of the four channels
of switching is processed through the fault logic circuit associ-
ated with each channel. It is then passed to an OR gate
which controls the FAULT flag output transistor, QF thru A 2
input AND gate.
The ENABLE input is common to each of the 4 power
switches and also disables the FAULT flag output at the
2 input AND gate when it is low. The Fault Logic circuit
senses the IN and OUT states and switches QF “ON” if a
fault is detected. Transistor QF activates a sink current
source to pull-down the FAULT pin to a 0 (low) state when
the fault is detected. Both shorted and open load conditions
are detected.
It is normal for thermal shutdown and current limiting to
occur sequentially during a short circuit fault condition. A
precaution applies for potential damage from high transient
dissipation during thermal shutdown. (See Note 1 following
the Electrical Specifications Table).
Each of the outputs are independently protected with over-
current limiting and over-temperature shutdown with thermal
hysteresis. If an output is shorted, the remaining outputs
function normally unless the temperature rise of the other
output devices can be made to exceed their shutdown tem-
perature of 165oC typical. When the junction temperature of
a driver exceeds the 165oC thermal shutdown value, that
output is turned off. When an output is shutdown, the result-
ing decrease in power dissipation allows the junction tem-
perature to decrease. When the junction temperature
decreases by approximately 15oC, the output is turned on.
FAULT LOGIC TABLE
IN
OUT
FAULT
MODE
H
L
H
Normal
H
H
L
Over Current, Over Temperature Open
Load or Short to Power Supply
LL
L
L
H
H
Normal
VCC
REFERENCE
1.2 VOLTS
CONSTANT
CURRENT SOURCE
INPUT
TO PREDRIVER
AND
OUTPUT STAGES
ENABLE
FIGURE 1. SCHEMATIC OF ONE INPUT STAGE
FAULT
1
CX
RX
VCC = +5V
ENABLE IN
FAULT MODE
INPUT
CHANNEL “A”
TX = RXCX 0.5 TO 1ms
QF
IF(SINK)
LOGIC
OUTPUT
FAULT FLAG
DIAGNOSTIC
OUTPUT, VF
B, C AND D
FAULT MODE
INPUTS
FIGURE 2. EXTERNAL FAULT OUTPUT CIRCUIT AND IF(SINK)
AS FAULT SINK PULLDOWN CURRENT, WHICH IS
ACTIVATED BY TRANSISTOR, QF, WHEN A FAULT
EXISTS
CA3272A, CA3292A


Ähnliche Teilenummer - CA3272AM

HerstellerTeilenummerDatenblattBauteilbeschribung
logo
Intersil Corporation
CA3273 INTERSIL-CA3273 Datasheet
24Kb / 4P
   High-Side Driver
April 1994
CA3274 INTERSIL-CA3274 Datasheet
27Kb / 5P
   Current Limiting Power Switch with Current Limiter Sense Flag
April 1994
CA3274E INTERSIL-CA3274E Datasheet
27Kb / 5P
   Current Limiting Power Switch with Current Limiter Sense Flag
April 1994
CA3275 INTERSIL-CA3275 Datasheet
37Kb / 5P
   Dual Full Bridge Driver
April 1994
CA3275E INTERSIL-CA3275E Datasheet
37Kb / 5P
   Dual Full Bridge Driver
April 1994
More results

Ähnliche Beschreibung - CA3272AM

HerstellerTeilenummerDatenblattBauteilbeschribung
logo
Intersil Corporation
CA3262A INTERSIL-CA3262A Datasheet
72Kb / 9P
   Quad-Gated, Inverting Power Drivers
August 1997
logo
Renesas Technology Corp
HIP0080 RENESAS-HIP0080 Datasheet
750Kb / 14P
   Quad Inverting Power Drivers with Serial Diagnostic Interface
November 2000
logo
Intersil Corporation
HIP0080 INTERSIL-HIP0080_00 Datasheet
147Kb / 14P
   Quad Inverting Power Drivers with Serial Diagnostic Interface
HIP0080 INTERSIL-HIP0080 Datasheet
115Kb / 15P
   Quad Inverting Power Drivers with Serial Diagnostic Interface
CA3252 INTERSIL-CA3252 Datasheet
53Kb / 6P
   Quad Gated Non-Inverting Power Driver
March 1998
logo
Renesas Technology Corp
HIP0082 RENESAS-HIP0082 Datasheet
1Mb / 11P
   Quad Power Drivers with Serial Diagnostic Interface
Features
logo
Intersil Corporation
HIP0082 INTERSIL-HIP0082 Datasheet
90Kb / 12P
   Quad Power Drivers with Serial Diagnostic Interface
logo
Sanken electric
SPF5047 SANKEN-SPF5047 Datasheet
469Kb / 15P
   Fault Flag Reporting
logo
Diodes Incorporated
AL8863 DIODES-AL8863 Datasheet
467Kb / 13P
   60V BUCK LED CONTROLLER WITH FAULT FLAG
August 2019
logo
Microsemi Corporation
SG1548 MICROSEMI-SG1548 Datasheet
52Kb / 4P
   QUAD POWER FAULT MONITOR
More results


Html Pages

1 2 3 4 5 6 7 8 9 10


Datenblatt Download

Go To PDF Page


Link URL




Privatsphäre und Datenschutz
ALLDATASHEETDE.COM
War ALLDATASHEET hilfreich?  [ DONATE ] 

Über Alldatasheet   |   Werbung   |   Kontakt   |   Privatsphäre und Datenschutz   |   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