
Device
Operating
Temperature Range
Package
SEMICONDUCTOR
TECHNICAL DATA
ZERO VOLTAGE SWITCH
POWER CONTROLLER
ORDERING INFORMATION
UAA2016D
UAA2016P
TA = – 20
°
to +85
°
C
SO–8
Plastic DIP
Order this document by UAA2016/D
3
Vref
1
PIN CONNECTIONS
4
8
7
6
5
2
Hys. Adj.
Sensor
Temp. Reduc.
Sync
VCC
Output
VEE
(Top View)
P SUFFIX
PLASTIC PACKAGE
CASE 626
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
1
8
1
8
1
MOTOROLA ANALOG IC DEVICE DATA
The UAA2016 is designed to drive triacs with the Zero Voltage technique
which allows RFI–free power regulation of resistive loads. Operating directly
on the AC power line, its main application is the precision regulation of
electrical heating systems such as panel heaters or irons.
A built–in digital sawtooth waveform permits proportional temperature
regulation action over a
±
1
°
C band around the set point. For energy savings
there is a programmable temperature reduction function, and for security a
sensor failsafe inhibits output pulses when the sensor connection is broken.
Preset temperature (i.e. defrost) application is also possible. In applications
where high hysteresis is needed, its value can be adjusted up to 5
°
C around
the set point. All these features are implemented with a very low external
component count.
Zero Voltage Switch for Triacs, up to 2.0 kW (MAC212A8)
Direct AC Line Operation
Proportional Regulation of Temperature over a 1
°
C Band
Programmable Temperature Reduction
Preset Temperature (i.e. Defrost)
Sensor Failsafe
Adjustable Hysteresis
Low External Component Count
Representative Block Diagram
Sense Input
Sampling
Full Wave
Logic
+
–
1/2
Failsafe
Hysteresis
Adjust
4
3
4–Bit DAC
Temperature
Reduction
Voltage
Reference
Internal
Reference
+
1
+
VEE
5
Pulse
Amplifier
Supply
Voltage
+
Output
6
7
2
11–Bit Counter
+VCC
Sync
UAA2016
8
Synchronization
Motorola, Inc. 1999
Rev 6