ON CA3059 Zero voltage switch Datasheet

CA3059
Zero Voltage Switch
This series is designed for thyristor control in a variety of AC power
switching applications for AC input voltages of 24 V, 120 V,
208/230 V, and 277 V @ 50/60 Hz.
Applications:
•
•
•
•
•
•
•
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Relay Control
Valve Control
Heater Control
Lamp Control
On−Off Motor Switching
Differential Comparator with Self−Contained Power Supply for
Industrial Applications
Synchronous Switching of Flashing Lights
2
VCC
Current
Boost
1
RL
3
MT2
DC Mode or
400 Hz Input
RP 14
100
μF +
−
ORDERING INFORMATION
Protection
Circuit
13
*
RX
PLASTIC PACKAGE
CASE 646
Zero
Crossing
Detector
12
15
V
VCC
Power
Supply
Limiter
AC
Input
AC
Input
Voltage
SEMICONDUCTOR
TECHNICAL DATA
14
5
RS
ZERO VOLTAGE SWITCH
Triac
Drive
9
+
On/Off
Sensing
Amp
−
10
VCC
MT1
Gate
8
* NTC Sensor
7
1
Inhibit
6
External Trigger
Figure 1. Representative Block Diagram
AC Input Voltage
(50/60 Hz)
Vac
Input Series
Resistor (RS)
kΩ
Dissipation Rating
for RS
W
24
2.0
0.5
120
10
2.0
208/230
20
4.0
277
25
5.0
© Semiconductor Components Industries, LLC, 2006
July, 2006 − Rev. 2
Operating
Temperature Range
Package
CA3059
TA = − 40° to +85°C
Plastic DIP
FUNCTIONAL BLOCK
DESCRIPTION
11
Gnd
Device
4
1
1. Limiter−Power Supply — Allows operation of
the CA3059 directly from an AC line. Suggested
dropping resistor (RS) values are given in the table
below.
2. Differential On/Off Sensing Amplifier — Tests
for condition of external sensors or input command
signals. Proportional control capability or hysteresis
may be implemented using this block.
3. Zero−Crossing Detector — Synchronizes the
output pulses to the zero voltage point of the AC cycle.
This synchronization eliminates RFI when used with
resistive loads.
4. Triac Drive — Supplies high−current pulses to
the external power controlling thyristor.
5. Protection Circuit — A built−in circuit may be
actuated, if the sensor opens or shorts, to remove the
drive current from the external triac.
6. Inhibit Capability — Thyristor firing may be
inhibited by the action of an internal diode gate at
Pin 1.
7. High Power DC Comparator Operation —
Operation in this mode is accomplished by connecting
Pin 7 to Pin 12 (thus overriding the action of the
zero−crossing detector). When Pin 13 is positive with
respect to Pin 9, current to the thyristor is continuous.
Publication Order Number:
CA3059/D
CA3059
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
DC Supply Voltage
(Between Pins 2 and 7)
VCC
Vdc
DC Supply Voltage
(Between Pins 2 and 8)
VCC
Peak Supply Current (Pins 5 and 7)
I5,7
± 50
mA
Fail−Safe Input Current (Pin 14)
I14
2.0
mA
Output Pulse Current (Pin 4) (Note 1)
Iout
150
mA
Junction Temperature
TJ
150
°C
Operating Temperature Range
TA
− 40 to + 85
°C
Storage Temperature Range
Tstg
− 65 to + 150
°C
12
Vdc
12
ELECTRICAL CHARACTERISTICS (Operation @ 120 Vrms, 50−60 Hz, TA = 25°C [Note 2])
Figure
Symbol
DC Supply Voltage
Inhibit Mode
RS = 10 k, IL = 0
RS = 5.0 k, IL = 2.0 mA
Pulse Mode
RS = 10 k, IL = 0
RS = 5.0 k, RL = 2.0 mA
Characteristic
2
VS
Gate Trigger Current
(VGT = 1.0 V, Pins 3 and 2 connected)
3
IGT
Peak Output Current, Pulsed
With Internal Power Supply, VGT = 0
Pin 3 Open
Pins 3 and 2 Connected
With External Power Supply, VCC = 12 V, VGT = 0
Pin 3 Open
Pins 3 and 2 Connected
3
IOM
Inhibit Input Ratio
(Ratio of Voltage @ Pin 9 to Pin 2)
5
Total Gate Pulse Duration (CExt = 0)
Positive dv/dt
Negative dv/dt
6
Pulse Duration After Zero Crossing
(CExt = 0, RExt = R)
Positive dv/dt
Negative dv/dt
6
Output Leakage Current Inhibit Mode (Note 3)
Input Bias Current
Min
Typ
Max
Unit
Vdc
6.1
—
6.5
6.1
7.0
—
6.0
—
6.4
6.2
7.0
—
—
160
—
mA
mA
50
90
125
190
—
—
—
—
230
300
—
—
V9/V2
0.465
0.485
0.520
tp
tn
70
70
100
100
140
140
4
—
μs
μs
tp1
tn1
—
—
50
60
—
—
3
I4
—
0.001
10
μA
7
IIB
—
0.15
1.0
μA
Common Mode Input Voltage Range
(Pins 9 and 13 Connected)
—
VCMR
—
1.4 to 5.0
—
Vdc
Inhibit Input Voltage
8
V1
—
1.4
1.6
Vdc
External Trigger Voltage
—
V6−V4
—
1.4
—
Vdc
NOTES: 1. Care must be taken, especially when using an external power supply, that total package dissipation is not exceeded.
2. The values given in the Electrical Characteristics Table at 120 V also apply for operation at input voltages of 24 V, 208/230 V, and 277 V, except for
Pulse Duration test. However, the series resistor (RS) must have the indicated value, shown in Table A for the specified input voltage.
3. I4 out of Pin 4, 2.0 V on Pin 1, S1 position 2.
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2
CA3059
TEST CIRCUITS
(All resistor values are in ohms)
9
4.6 k
Pulse
10
11
RS
10 k
5
4
AC Line
0.3 k
2
13
IOM
or
IGT
7
Inhibit
1Ω
± 1%
Oscilloscope
With
High−Gain
Input
RL
4.6 k
RS
VS
5
11
AC Line
8
100 μF
13
2
3
7
S1
1
IL
8
4
9
5k
External
Load
Current
10
100 μF
Figure 2. DC Supply Voltage
Figure 3. Peak Output (Pulsed) and Gate
Trigger Current with Internal Power Supply
100 μF
9
2
3
5k
VGT
2
5k
5k
11
10
6
RS
10 k
5
RS
10 k
120 Vrms
60 Hz
13
4
7
12
120 Vrms
60 Hz
4
7
11
10
1Ω
± 1%
IOM
9
Oscilloscope
With
High−Gain
Input
8
8
R1
VGT
5
14
13
2
R2
100 μF
Figure 4. Peak Output Current (Pulsed)
with External Power Supply
Gate Pulse
Figure 5. Input Inhibit Ratio
AC Line
Positive
dv/dt
Negative
dv/dt
Zero
Voltage
tP1
tP
120
Vrms 60
Hz
9
RS
11
5
10 k
CExt
2
4
7
1k
12
8
13
5k
RExt
VCC = 6.0 V
tN1
tN
10
Oscilloscope
With
High−Gain
Input
+ 3.0 V
9
2
IIB
5k
13
100 μF
Figure 6. Gate Pulse Duration Test Circuit
with Associated Waveform
7
8
Figure 7. Input Bias Current Test Circuit
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3
CA3059
10 k
IOM, PEAK OUTPUT CURRENT (PULSED) [mA]
TYPICAL CHARACTERISTICS
9
5
10
1
1
1
4
2
14
7
39 k
13
8
VI
R1
R2
5k
5k
300
250
Pins 2 and 3 Connected
200
Pin 3 Open
150
100
120 Vrms, 60 Hz
Gate Voltage = 0
50
0
5.0
12
Figure 9. Peak Output Current (Pulsed)
versus External Power Supply Voltage
120 Vrms, 60Hz
160
140
TOTAL PULSE WIDTH ( μ s)
IOM, PEAK OUTPUT CURRENT (PULSED) [mA]
Figure 8. Inhibit Input Voltage Test
8.0
9.0
10
6.0
7.0
11
EXTERNAL POWER SUPPLY VOLTAGE (V)
140
120
120 Vrms, 60 Hz
Gate Voltage = 0
100
− 40
− 20
0
20
40
60
80
130
120
120 Vrms, 60 Hz Operation
110
100
90
80
100
TA, AMBIENT TEMPERATURE (°C)
− 40
− 20
0
20
40
60
TA, AMBIENT TEMPERATURE (°C)
80
Figure 10. Peak Output Current (Pulsed)
versus Ambient Temperature
Figure 11. Total Pulse Width versus
Ambient Temperature
100
120 Vrms, 60 Hz
V9 /V 2, INHIBIT VOLTAGE RATIO
VS, INTERNAL SUPPLY (V)
0.52
7.0
6.8
6.6
Inhibit Mode
6.4
6.2
6.0
− 40
− 20
0
20
40
60
TA, AMBIENT TEMPERATURE (°C)
80
0.50
0.48
0.46
0.44
0.42
0.40
100
Figure 12. Internal Supply versus
Ambient Temperature
− 40
− 20
0
20
40
60
TA, AMBIENT TEMPERATURE (°C)
80
Figure 13. Inhibit Voltage Ratio versus
Ambient Temperature
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4
100
CA3059
RP
CF
100 μF
15 V
+
−
Inhibit
Input
2
10 k
Rx
NTC Sensor
13
1
50 k
15
10
3 Current
Boost
AC Line
Input
RS
8
9
70 μA
85 k
9.6 k
25
35 μA
11
5
30 k
30 k
5k
50 k
4
30 k
53 μA
12
For DC Mode
or 400 Hz
Operation
14
Fail−Safe
Input
To
Thyristor
Gate
150 μA
7
To
Common
6
For
External
Trigger
NOTE: Current sources are established by an internal reference.
Figure 14. Circuit Schematic
APPLICATION INFORMATION
Power Supply
b. Sensor Resistance (RX) and RP values should be
between 2 kΩ and 100 kΩ.
c. The relationship 0.33 < RX/RP < 3 must be met over
the anticipated temperature range to prevent
undesired activation of the circuit. A shunt or series
resistor may have to be added.
The CA3059 is a self−powered circuit, powered from the
AC line through an appropriate dropping resistor (see
Table A). The internal supply is designed to power the
auxiliary power circuits.
In applications where more output current from the
internal supply is required, an external power supply of
higher voltage should be used. To use an external power
supply, connect Pin 5 and Pin 7 together and apply the
synchronizing voltage to Pin 12 and the DC supply voltage
to Pin 2 as shown in Figure 4.
External Inhibit Function
A priority inhibit command applied to Pin 1 will remove
current drive from the thyristor. A command of at least
+1.2 V @ 10 μA is required. A DTL or TTL logic 1 applied
to Pin 1 will activate the inhibit function.
Operation of Protection Circuit
DC Gate Current Mode
The protection circuit, when connected, will remove
current drive from the triac if an open or shorted sensor is
detected. This circuit is activated by connecting Pin 13 to
Pin 14 (see Figure 1).
The following conditions should be observed when the
protection circuit is utilized:
a. The internal supply should be used and the external
load current must be limited to 2 mA with a 5 kΩ
dropping resistor.
When comparator operation is desired or inductive loads
are being switched, Pins 7 and 12 should be connected. This
connection disables the zero−crossing detector to permit the
flow of gate current from the differential sensing amplifier
on demand. Care should be exercised to avoid possible
overloading of the internal power supply when operating the
device in this mode. A resistor should be inserted between
Pin 4 and the thyristor gate in order to limit the current.
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5
CA3059
PACKAGE DIMENSIONS
PLASTIC PACKAGE
CASE 646−06
ISSUE M
14
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.
5. ROUNDED CORNERS OPTIONAL.
8
B
1
7
A
F
L
N
C
−T−
SEATING
PLANE
H
G
D 14 PL
J
K
0.13 (0.005)
M
DIM
A
B
C
D
F
G
H
J
K
L
M
N
INCHES
MIN
MAX
0.715
0.770
0.240
0.260
0.145
0.185
0.015
0.021
0.040
0.070
0.100 BSC
0.052
0.095
0.008
0.015
0.115
0.135
0.290
0.310
−−−
10_
0.015
0.039
MILLIMETERS
MIN
MAX
18.16
18.80
6.10
6.60
3.69
4.69
0.38
0.53
1.02
1.78
2.54 BSC
1.32
2.41
0.20
0.38
2.92
3.43
7.37
7.87
−−−
10_
0.38
1.01
M
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CA3059/D