CA3079 Datasheet PDF - Intersil
| Part Number | CA3079 | |
| Description | Zero-Voltage Switches for 50Hz-60Hz and 400Hz Thyristor Control Applications | |
| Manufacturers | Intersil | |
| Logo |  |
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Oct 1999
CA3059, CA3079N1-O88oR8uE-rICONTOTBeEcSMRhOMnSL®EiIcELNaTDolESrEPwuDRpwRpOwEoD.rPiUtnLCtCAeeTrCnsEtileM.crEoamNt T/tsc
Zero-Voltage Switches for 50Hz-60Hz and
400Hz Thyristor Control Applications
Features
Description
• Relay Control
• Valve Control
• Synchronous Switching of Flashing Lights
• On-Off Motor Switching
• Differential Comparator with Self-Contained Power
Supply for Industrial Applications
• Photosensitive Control
• Power One-Shot Control
• Heater Control
• Lamp Control
Type Features
CA3059 CA3079
• 24V, 120V, 208/230V, 277V at 50/60 . . . X
or 400Hz Operation
X
• Differential Input . . . . . . . . . . . . . . . . . . X
X
• Low Balance Input Current (Max) - µA. . . 1
2
• Built-In Protection Circuit for . . . . . . . . X
Opened or Shorted Sensor (Term 14)
X
• Sensor Range (Rx) - kΩ. . . . . . . . . . . . . 2 - 100 2 - 50
• DC Mode (Term 12) . . . . . . . . . . . . . . . . X
• External Trigger (Term 6) . . . . . . . . . . . X
• External Inhibit (Term 1) . . . . . . . . . . . . X
• DC Supply Volts (Max) . . . . . . . . . . . . . 14
10
• Operating Temperature Range (oC) . . . -55 to +125
The CA3059 and CA3079 zero-voltage switches are mono-
lithic silicon integrated circuits designed to control a thyristor
in a variety of AC power switching applications for AC input
voltages of 24V, 120V, 208/230V, and 277V at 50Hz-60Hz
and 400Hz. Each of the zero-voltage switches incorporates
4 functional blocks (see the Functional Block Diagram) as
follows:
1. Limiter-Power Supply - Permits operation directly from an
AC line.
2. Differential On/Off Sensing Amplifier - Tests the condition
of external sensors or command signals. Hysteresis or
proportional-control capability may easily be implement-
ed in this section.
3. Zero-Crossing Detector - Synchronizes the output pulses
of the circuit at the time when the AC cycle is at zero volt-
age point; thereby eliminating radio-frequency interfer-
ence (RFI) when used with resistive loads.
4. Triac Gating Circuit - Provides high-current pulses to the
gate of the power controlling thyristor.
In addition, the CA3059 provides the following important
auxiliary functions (see the Functional Block Diagram).
1. A built-in protection circuit that may be actuated to remove
drive from the triac if the sensor opens or shorts.
2. Thyristor firing may be inhibited through the action of an
internal diode gate connected to Terminal 1.
Ordering Information
PART NUMBER
CA3059
CA3079
TEMPERATURE
-55oC to +125oC
-55oC to +125oC
PACKAGE
14 Lead Plastic DIP
14 Lead Plastic DIP
3. High-power dc comparator operation is provided by over-
riding the action of the zero-crossing detector. This is ac-
complished by connecting Terminal 12 to Terminal 7.
Gate current to the thyristor is continuous when Terminal
13 is positive with respect to Terminal 9.
The CA3059 and CA3079 are supplied in 14 lead dual-in-
line plastic packages.
Pinouts
CA3059 (PDIP)
TOP VIEW
INHIBIT 1
DC SUPPLY 2
HIGH CURRENT
NEG. TRIGGER
3
TRIGGER OUT 4
AC IN 5
TRIGGER IN 6
COMMON 7
14 FAIL-SAFE
13 SENSE AMP IN
12 ZCD OVERRIDE
11 R DRIVER (COM)
10 R DRIVER V+
9 SENSE AMP REF
8 COMMON
CA3079 (PDIP)
TOP VIEW
DO NOT USE 1
DC SUPPLY 2
HIGH CURRENT
NEG. TRIGGER
3
TRIGGER OUT 4
AC IN 5
DO NOT USE 6
COMMON 7
14 DO NOT USE
13 SENSE AMP IN
12 DO NOT USE
11 R DRIVER (COM)
10 R DRIVER V+
9 SENSE AMP REF
8 COMMON
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
3
FN490.5
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CA3059, CA3079
PULSE 4.6K
0.3K
13 2
INHIBIT
4.6K
RS
AC LINE
5
7
CA3059
CA3079
RL
11
100µF
8
ALL RESISTANCE
VALUES ARE IN Ω
4
9 10
IL
EXTERNAL
LOAD
CURRENT
VS
120VRMS, 50/60Hz OPERATION
INPUT RESISTANCE (RS) = 10kΩ
NO EXTERNAL LOAD
7.00
6.75
INHIBIT MODE
6.50
PULSE MODE
6.25
6.00
5.75
-75 -50 -25 0 25 50 75 100 125
AMBIENT TEMPERATURE (oC)
FIGURE 2A. DC SUPPLY VOLTAGE TEST CIRCUIT FOR CA3059 FIGURE 2B. DC SUPPLY VOLTAGE vs AMBIENT TEMPERA-
AND CA3079
TURE FOR CA3059 AND CA3079
6.5
6.0
5.5
5.0
4.5
4.0
3.5
0
120VRMS, 50/60Hz OPERATION
TA = +25oC
RS = 5kΩ
(INHIBIT
MODE)
RS = 10kΩ
(PULSE
MODE)
RS = 10kΩ
(INHIBIT
MODE)
RS = 5kΩ
(PULSE
MODE)
1 2 3 45 67 8
EXTERNAL LOAD CURRENT (mA)
120VRMS, 50/60Hz OPERATION
130 TA = +25oC
120
110
100 TERMINALS 2 AND 3
90 CONNECTED
80
70
60
50
40 TERMINAL 3 OPEN
01
23
GATE TRIGGER (V)
FIGURE 2C. DC SUPPLY VOLTAGE vs EXTERNAL LOAD
CURRENT FOR CA3059 AND CA3079
FIGURE 3. GATE TRIGGER CURRENT vs GATE TRIGGER
VOLTAGE FOR CA3059 AND CA3079
RS
10K
AC LINE
9 10 11
5
CA3059
CA3079
4 OSCILLOSCOPE
7
IOM (4)
OR
IGT(4)
1Ω
±1%
WITH
HIGH GAIN
INPUT
8 13 2 3
6K 5K 100µF
VGT
120VRMS, 50/60Hz OPERATION
GATE TRIGGER, VGT = 0 (V)
175
150 TERMINALS 2 AND 3
CONNECTED
125
100
75
50
-75 -50 -25
TERMINAL 3 OPEN
0 25 50 75 100 125
AMBIENT TEMPERATURE (oC)
FIGURE 4A. PEAK OUTPUT (PULSED) AND GATE TRIGGER
CURRENT WITH INTERNAL POWER SUPPLY
TEST CIRCUIT FOR CA3059 AND CA3079
FIGURE 4B. PEAK OUTPUT CURRENT (PULSED) vs AMBIENT
TEMPERATURE FOR CA3059 AND CA3079
7
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for CA3079 electronic component. |
| Information | Total 12 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ CA3079.PDF Datasheet ] | |
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