UAA2016/D [ONSEMI]
Zero Voltage Switch Power Controller ; 零电压开关电源控制器\n
| 型号： | UAA2016/D |
| 厂家： | 
ONSEMI |
| 描述： | Zero Voltage Switch Power Controller
|
| 文件： | 总8页 (文件大小：132K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Order this document by UAA2016/D
ZERO VOLTAGE SWITCH
POWER CONTROLLER
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.
SEMICONDUCTOR
TECHNICAL DATA
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.
8
• 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
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
• Adjustable Hysteresis
• Low External Component Count
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
PIN CONNECTIONS
V
1
2
Sync
8
7
6
5
ref
Representative Block Diagram
V
Hys. Adj.
Sensor
CC
3
4
Output
UAA2016
Failsafe
V
Temp. Reduc.
EE
3
4
Sampling
Full Wave
Logic
6
7
Pulse
Amplifier
+
–
Sense Input
(Top View)
Output
Internal
Reference
+
+
1/2
+V
Temperature
Reduction
CC
+
Synchronization
4–Bit DAC
2
1
Hysteresis
Adjust
Supply
Voltage
ORDERING INFORMATION
Operating
11–Bit Counter
Temperature Range
Device
Package
Voltage
Reference
UAA2016D
UAA2016P
SO–8
8
5
T
A
= – 20° to +85°C
Plastic DIP
Sync
V
EE
Motorola, Inc. 1999
Rev 6
UAA2016
MAXIMUM RATINGS (Voltages referenced to Pin 7)
Rating
Symbol
Value
Unit
mA
mA
Supply Current (I
)
I
15
Pin 5
CC
Non–Repetitive Supply Current
(Pulse Width = 1.0 µs)
I
200
CCP
AC Synchronization Current
Pin Voltages
I
3.0
mA
V
sync
V
V
V
V
0; V
Pin 2
Pin 3
Pin 4
Pin 6
ref
ref
ref
EE
0; V
0; V
0; V
V
Current Sink
I
1.0
mA
mA
ref
Pin 1
Output Current (Pin 6)
I
O
150
(Pulse Width < 400 µs)
Power Dissipation
P
625
100
mW
°C/W
°C
D
Thermal Resistance, Junction–to–Air
Operating Temperature Range
R
θJA
T
A
– 20 to + 85
ELECTRICAL CHARACTERISTICS (T = 25°C, V
= –7.0 V, voltages referred to Pin 7, unless otherwise noted.)
EE
A
Characteristic
Symbol
Min
Typ
Max
Unit
Supply Current (Pins 6, 8 not connected)
(T = – 20° to + 85°C)
A
I
mA
CC
—
0.9
1.5
Stabilized Supply Voltage (Pin 5) (I
Reference Voltage (Pin 1)
= 2.0 mA)
V
–10
– 6.5
– 9.0
– 5.5
– 8.0
– 4.5
V
V
CC
EE
V
ref
Output Pulse Current (T = – 20° to + 85°C)
I
mA
A
O
(R
= 60 W, V
= – 8.0 V)
EE
90
—
100
—
130
10
out
Output Leakage Current (V
= 0 V)
I
µA
µs
out
OL
Output Pulse Width (T = – 20° to + 85°C) (Note 1)
T
A
P
(Mains = 220 Vrms, R
sync
= 220 kΩ)
50
–10
—
—
—
100
+10
0.1
—
Comparator Offset (Note 5)
Sensor Input Bias Current
Sawtooth Period (Note 2)
Sawtooth Amplitude (Note 6)
V
mV
µA
off
I
IB
—
T
—
40.96
70
sec
mV
mV
S
S
A
50
90
Temperature Reduction Voltage (Note 3)
(Pin 4 Connected to V
V
TR
)
280
—
350
10
420
—
CC
Internal Hysteresis Voltage
(Pin 2 Not Connected)
V
mV
mV
mV
IH
Additional Hysteresis (Note 4)
(Pin 2 Connected to V
V
H
)
280
180
350
—
420
300
CC
Failsafe Threshold (T = – 20° to + 85°C) (Note 7)
V
A
FSth
NOTES: 1. Output pulses are centered with respect to zero crossing point. Pulse width is adjusted by the value of R
. Refer to application curves.
sync
2. The actual sawtooth period depends on the AC power line frequency. It is exactly 2048 times the corresponding period. For the 50 Hz case it is 40.96
sec. For the 60 Hz case it is 34.13 sec. This is to comply with the European standard, namely that 2.0 kW loads cannot be connected or removed
from the line more than once every 30 sec.
3. 350 mV corresponds to 5°C temperature reduction. This is tested at probe using internal test pad. Smaller temperature reduction can be obtained by
adding an external resistor between Pin 4 and V . Refer to application curves.
CC
4. 350 mV corresponds to a hysteresis of 5°C. This is tested at probe using internal test pad. Smaller additional hysteresis can be obtained by adding
an external resistor between Pin 2 and V . Refer to application curves.
CC
5. Parameter guaranteed but not tested. Worst case 10 mV corresponds to 0.15°C shift on set point.
6. Measured at probe by internal test pad. 70 mV corresponds to 1°C. Note that the proportional band is independent of the NTC value.
7. At very low temperature the NTC resistor increases quickly. This can cause the sensor input voltage to reach the failsafe threshold, thus inhibiting
output pulses; refer to application schematics. The corresponding temperature is the limit at which the circuit works in the typical application. By
setting this threshold at 0.05 V , the NTC value can increase up to 20 times its nominal value, thus the application works below – 20°C.
ref
2
MOTOROLA ANALOG IC DEVICE DATA
UAA2016
Figure 1. Application Schematic
S2
S1
R
S
UAA2016
Failsafe
R
R
R
R
3
def
2
1
MAC212A8
3
Sampling
Full Wave
Logic
R
6
7
out
+
–
Pulse
Amplifier
Sense Input
Output
4
2
Internal
Reference
+V
+
+
+
1/2
CC
Temp. Red.
C
F
4–Bit DAC
Supply
Voltage
Hys
Adj
Load
11–Bit Counter
Synchronization
1
V
ref
5
8
Sync
sync
V
EE
R
R
S
APPLICATION INFORMATION
(For simplicity, the LED in series with R
out
is omitted in the
The load current is then:
following calculations.)
I
(Vrms
2
sin(2 ft)–V ) R
TM
Load
L
Triac Choice and R
Determination
out
Depending on the power in the load, choose the triac that
has the lowest peak gate trigger current. This will limit the
output current of the UAA2016 and thus its power
where V
the line frequency.
is the maximum on state voltage of the triac, f is
TM
Set I = I
for t = T /2 to calculate T .
Load Latch
P
P
consumption. Use Figure 4 to determine R
according to
out
the triac maximum gate current (I ) and the application low
Figures 6 and 7 give the value of T which corresponds to
GT
P
and I
temperature limit. For a 2.0 kW load at 220 Vrms, a good triac
choice is the Motorola MAC212A8. Its maximum peak gate
trigger current at 25°C is 50 mA.
the higher of the values of I
Hold
, assuming that
Latch
V
= 1.6 V. Figure 8 gives the R that produces the
sync
TM
corresponding T .
P
For an application to work down to – 20°C, R
should be
out
R
and Filter Capacitor
Supply
With the output current and the pulse width determined as
above, use Figures 9 and 10 to determine R , assuming
60 Ω. It is assumed that: I (T) = I (25°C) exp (–T/125)
GT GT
with T in °C, which applies to the MAC212A8.
Output Pulse Width, R
Supply
pin (including NTC bridge
sync
The pulse with T is determined by the triac’s I
together with the load value and working conditions
(frequency and voltage):
that the sinking current at V
current) is less than 0.5 mA. Then use Figure 11 and 12 to
determine the filter capacitor (C ) according to the ripple
desired on supply voltage. The maximum ripple allowed is
1.0 V.
ref
, I
Hold Latch
P
F
Given the RMS AC voltage and the load power, the load
value is:
2
Temperature Reduction Determined by R
1
R = V rms/POWER
L
(Refer to Figures 13 and 14.)
3
MOTOROLA ANALOG IC DEVICE DATA
UAA2016
Figure 2. Comparison Between Proportional Control and ON/OFF Control
Overshoot
Proportional Band
Room
Temperature
T (°C)
Time (minutes, Typ.)
Time (minutes, Typ.)
Heating
Power
P(W)
Time (minutes, Typ.)
Time (minutes, Typ.)
Proportional Temperature Control
Reduced Overshoot
Good Stability
ON/OFF Temperature Control
Large Overshoot
Marginal Stability
Figure 3. Zero Voltage Technique
T
is centered on the zero–crossing.
P
T
P
AC Line
Waveform
I
Hold
I
Latch
Gate Current
Pulse
f = AC Line Frequency (Hz)
Vrms = AC Line RMS Voltage (V)
= Synchronization Resistor (Ω)
5
10
14 x R
7
sync
T
(µs)
P
Vrms
2 x
f
R
sync
4
MOTOROLA ANALOG IC DEVICE DATA
UAA2016
CIRCUIT FUNCTIONAL DESCRIPTION
Power Supply (Pin 5 and Pin 7)
case the level is set at 5°C. This configuration can be useful
for low temperature inertia systems.
The application uses a current source supplied by a single
high voltage rectifier in series with a power dropping resistor.
Sawtooth Generator
An integrated shunt regulator delivers a V
voltage of
EE
In order to comply with European norms, the ON/OFF
period on the load must exceed 30 seconds. This is achieved
by an internal digital sawtooth which performs the
proportional regulation without any additional component.
The sawtooth signal is added to the reference applied to the
comparator negative input. Figure 2 shows the regulation
improvement using the proportional band action.
– 8.6 V with respect to Pin 7. The current used by the total
regulating system can be shared in four functional blocks: IC
supply, sensing bridge, triac gate firing pulses and zener
current. The integrated zener, as in any shunt regulator,
absorbs the excess supply current. The 50 Hz pulsed supply
current is smoothed by the large value capacitor connected
between Pins 5 and 7.
Noise Immunity
Temperature Sensing (Pin 3)
The noisy environment requires good immunity. Both the
voltage reference and the comparator hysteresis minimize
the noise effect on the comparator input. In addition the
effective triac triggering is enabled every 1/3 sec.
The actual temperature is sensed by a negative
temperature coefficient element connected in a resistor
divider fashion. This two element network is connected
between the ground terminal Pin 5 and the reference voltage
– 5.5 V available on Pin 1. The resulting voltage, a function of
the measured temperature, is applied to Pin 3 and internally
compared to a control voltage whose value depends on
several elements: Sawtooth, Temperature Reduction and
Hysteresis Adjust. (Refer to Application Information.)
Failsafe
Output pulses are inhibited by the “failsafe” circuit if the
comparator input voltage exceeds the specified threshold
voltage. This would occur if the temperature sensor circuit is
open.
Temperature Reduction
Sampling Full Wave Logic
For energy saving, a remotely programmable temperature
Two consecutive zero–crossing trigger pulses are
generated at every positive mains half–cycle. This ensures
that the number of delivered pulses is even in every case.
reduction is available on Pin 4. The choice of resistor R
1
connected between Pin 4 and V
reduction level.
sets the temperature
CC
The pulse length is selectable by R
connected on Pin 8.
sync
The pulse is centered on the zero–crossing mains waveform.
Comparator
When the positive input (Pin 3) receives a voltage greater
than the internal reference value, the comparator allows the
triggering logic to deliver pulses to the triac gate. To improve
the noise immunity, the comparator has an adjustable
Pulse Amplifier
The pulse amplifier circuit sinks current pulses from Pin 6
to V . The minimum amplitude is 70 mA. The triac is then
EE
triggered in quadrants II and III. The effective output current
hysteresis. The external resistor R connected to Pin 2 sets
3
amplitude is given by the external resistor R . Eventually,
an LED can be inserted in series with the Triac gate (see
Figure 1).
out
the hysteresis level. Setting Pin 2 open makes a 10 mV
hysteresis level, corresponding to 0.15°C. Maximum
hysteresis is obtained by connecting Pin 2 to V . In that
CC
Figure 5. Minimum Output Current
Figure 4. Output Resistor versus
versus Output Resistor
Triac Gate Current
200
100
180
160
140
80
60
40
T
= +10°C
A
120
100
80
T
= 0°C
A
T
= + 85°C
A
T
= – 20
°C
A
T
= – 20
140
°C
A
20
0
60
T
= –10°C
A
40
20
30
40
50
60
40
60
80
100
120
160
180
200
I
, TRIAC GATE CURRENT SPECIFIED AT 25°C (mA)
R
, OUTPUT RESISTOR (Ω)
GT
out
5
MOTOROLA ANALOG IC DEVICE DATA
UAA2016
Figure 6. Output Pulse Width versus
Maximum Triac Latch Current
Figure 7. Output Pulse Width versus
Maximum Triac Latch Current
120
100
120
100
80
F = 50 Hz
2.0 kW Loads
= 1.6 V
V
TM
= 25°C
T
A
110 Vrms
80
60
110 Vrms
220 Vrms
60
220 Vrms
F = 50 Hz
1.0 kW Loads
40
40
20
V
= 1.6 V
TM
= 25
T
°C
A
20
0
10
20
30
40
50
60
0
10
Latch(max)
20
30
40
50
60
I
, MAXIMUM TRIAC LATCH CURRENT (mA)
I
, MAXIMUM TRIAC LATCH CURRENT (mA)
Latch(max)
Figure 8. Synchronization Resistor
versus Output Pulse Width
Figure 9. Maximum Supply Resistor
versus Output Current
400
60
50
40
30
20
F = 50 Hz
V = 220 Vrms
F = 50 Hz
300
200
100
0
220 Vrms
110 Vrms
80
T
= 50 µs
P
100
150
µ
s
µs
200 µs
20
40
60
100
0
25
50
75
100
T , OUTPUT PULSE WIDTH (
µs)
I
, OUTPUT CURRENT (mA)
P
O
Figure 10. Maximum Supply Resistor
versus Output Current
Figure 11. Minimum Filter Capacitor
versus Output Current
30
90
80
70
60
Ripple = 1.0 Vp–p
F = 50 Hz
V = 110 Vrms
F = 50 Hz
25
20
200
µ
s
T
= 50 µs
P
150
100
µ
s
s
100
150
µ
s
s
µ
µ
15
10
50
40
T
= 50 µs
P
200
µs
0
25
50
75
100
0
20
40
I , OUTPUT CURRENT (mA)
O
60
80
100
I
, OUTPUT CURRENT (mA)
O
6
MOTOROLA ANALOG IC DEVICE DATA
UAA2016
Figure 12. Minimum Filter Capacitor
versus Output Current
Figure 13. Temperature Reduction versus R
1
7.0
6.0
5.0
180
Setpoint = 20°C
Ripple = 0.5 V
F = 50 Hz
p–p
160
140
200
µs
4.0
3.0
2.0
150
100
µ
s
s
120
10 k
Ω
NTC
NTC
µ
100
80
1.0
0
100 k
Ω
T
= 50 µs
P
0
20
40
60
80
100
0
10
20
30
40
50
60
70
80
90
100
I
, OUTPUT CURRENT (mA)
R , TEMPERATURE REDUCTION RESISTOR (kΩ)
1
O
Figure 14. Temperature Reduction versus
Temperature Setpoint
Figure 15. R
versus Preset Temperature
DEF
4
3
2
6.0
5.6
5.2
R
= 0
1
100 k
Ω NTC
10 kΩ NTC
10 k
Ω NTC
4.8
100 k
Ω NTC
1
0
4.4
4.0
10
14
18
22
26
30
0
5
10
15
20
25
C)
30
T
, TEMPERATURE SETPOINT (
°C)
T
, PRESET TEMPERATURE (°
DEF
S
Figure 16. R + R versus Preset Setpoint
Figure 17. Comparator Hysteresis versus R
3
S
2
8
6
4
2
0
0.5
T
= 4°C
DEF
0.4
0.3
0.2
0.1
10 k
Ω NTC
R
= 29 k
Ω
DEF
100 k
Ω NTC
R
= 310 kΩ
DEF
0
0
100
200
300
400
10
14
18
22
26
30
34
R , HYSTERESIS ADJUST RESISTOR (k
Ω)
T
, TEMPERATURE SETPOINT (°C)
3
S
7
MOTOROLA ANALOG IC DEVICE DATA
UAA2016
OUTLINE DIMENSIONS
P SUFFIX
PLASTIC PACKAGE
CASE 626–05
ISSUE K
8
5
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
–B–
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
1
4
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
F
MILLIMETERS
INCHES
DIM
A
B
C
D
F
G
H
J
K
L
M
N
MIN
9.40
6.10
3.94
0.38
1.02
MAX
10.16
6.60
4.45
0.51
1.78
MIN
MAX
0.400
0.260
0.175
0.020
0.070
–A–
NOTE 2
0.370
0.240
0.155
0.015
0.040
L
C
2.54 BSC
0.100 BSC
0.76
0.20
2.92
7.62 BSC
–––
1.27
0.30
3.43
0.030
0.008
0.115
0.300 BSC
–––
0.050
0.012
0.135
J
–T–
SEATING
PLANE
N
10
1.01
10
0.040
M
0.76
0.030
D
K
G
H
M
M
M
0.13 (0.005)
T
A
B
D SUFFIX
PLASTIC PACKAGE
CASE 751–05
ISSUE N
NOTES:
–A–
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
(SO–8)
8
1
5
4
4X P
–B–
M
M
0.25 (0.010)
B
G
MILLIMETERS
INCHES
DIM
A
B
C
D
F
G
J
K
M
P
MIN
4.80
3.80
1.35
0.35
0.40
MAX
5.00
4.00
1.75
0.49
1.25
MIN
MAX
0.196
0.157
0.068
0.019
0.049
0.189
0.150
0.054
0.014
0.016
R X 45
F
C
SEATING
PLANE
–T–
1.27 BSC
0.050 BSC
K
J
M
0.18
0.10
0
0.25
0.25
7
0.007
0.004
0
0.009
0.009
7
8X D
0.25 (0.010)
M
S
S
T
B
A
5.80
0.25
6.20
0.50
0.229
0.010
0.244
0.019
R
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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specificallydisclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
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