CA3059 Datasheet, PDF (1/6 Pages) Motorola, Inc – ZERO VOLTAGE SWITCH

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:
• Relay Control
• Heater Control
• Valve Control
• Lamp Control
• On–Off Motor Switching
• Differential Comparator with Self–Contained Power Supply for Industrial
Applications
• Synchronous Switching of Flashing Lights
Order this document by CA3059/D
CA3059
ZERO VOLTAGE
SWITCH
SEMICONDUCTOR
TECHNICAL DATA
14
1
Figure 1. Representative Block Diagram
PLASTIC PACKAGE
CASE 646
RS
5
AC
Input
Limiter
AC
Input
Voltage
100
µF ₊
15 ^–
V
*
RX
12
DC Mode or
400 Hz Input
RP 14
Protection
Circuit
13
+
On/Off
Sensing
Amp
9
–
10
VCC
11
Power
Supply
Zero
Crossing
Detector
* NTC Sensor
Gnd 7
8
1
Inhibit
AC Input Voltage
(50/60 Hz)
Vac
24
120
208/230
277
Input Series
Resistor (RS)
kΩ
2.0
10
20
25
2
VCC
VCC
Current ^RL
Boost 3
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
CA3059
TA = – 40° to +85°C Plastic DIP
MT2
Triac
4
Drive
MT1
Gate
6
External Trigger
Dissipation Rating
for RS
W
0.5
2.0
4.0
5.0
FUNCTIONAL BLOCK
DESCRIPTION
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.
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 0
1