Datasheet UAA2016D, UAA2016P Datasheet (MOTOROLA)

  
 

Order this document by UAA2016/D



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

ZERO VOLTAGE SWITCH

POWER CONTROLLER

SEMICONDUCTOR

TECHNICAL DATA

8

1

P SUFFIX

PLASTIC PACKAGE

CASE 626

8

1

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO–8)

Representative Block Diagram

Failsafe

Sense Input

Temperature

Reduction

Hysteresis

Adjust

Voltage

Reference

3

4

2

1

+

+

+

4–Bit DAC

11–Bit Counter

+
–

Sampling

Full Wave

Logic

1/2

Synchronization

8

Sync

MOTOROLA ANALOG IC DEVICE DATA

Internal

Reference

UAA2016

Pulse

Amplifier

Supply

Voltage

V

EE

PIN CONNECTIONS

V

6

Output

7

+V

CC

ref

Hys. Adj.

Sensor

Temp. Reduc.

1
2

3
4

(Top View)

8
7
6
5

Sync
V

CC
Output
V

EE

ORDERING INFORMATION

Operating

Device

5

UAA2016D
UAA2016P

 Motorola, Inc. 1999 Rev 6

Temperature Range

TA = – 20° to +85°C

Package

SO–8

Plastic DIP

1

MAXIMUM RATINGS

(Voltages referenced to Pin 7)

Rating Symbol Value Unit

Supply Current (I

) I

Pin 5

Non–Repetitive Supply Current

(Pulse Width = 1.0 µs)
AC Synchronization Current I
Pin Voltages V

V

Current Sink I

ref

Output Current (Pin 6)

(Pulse Width < 400 µs)
Power Dissipation P
Thermal Resistance, Junction–to–Air R
Operating Temperature Range T

UAA2016

CC

I

CCP

sync

Pin 2

V

Pin 3

V

Pin 4

V

Pin 6

Pin 1

I

O

D

θJA

A

15 mA

200 mA

3.0 mA

0; V

ref

0; V

ref

0; V

ref

0; V

EE

1.0 mA

150 mA

625 mW
100 °C/W

– 20 to + 85 °C

V

ELECTRICAL CHARACTERISTICS (T

= 25°C, VEE = –7.0 V , voltages referred to Pin 7, unless otherwise noted.)

A

Characteristic Symbol Min Typ Max Unit

Supply Current (Pins 6, 8 not connected)

(TA = – 20° to + 85°C)
Stabilized Supply Voltage (Pin 5) (ICC = 2.0 mA) V
Reference Voltage (Pin 1) V
Output Pulse Current (TA = – 20° to + 85°C)

(R

= 60 W, VEE = – 8.0 V)

out

Output Leakage Current (V

= 0 V) I

out

Output Pulse Width (TA = – 20° to + 85°C) (Note 1)

(Mains = 220 Vrms, R

sync

= 220 kΩ)
Comparator Offset (Note 5) V
Sensor Input Bias Current I
Sawtooth Period (Note 2) T
Sawtooth Amplitude (Note 6) A
Temperature Reduction Voltage (Note 3)

(Pin 4 Connected to VCC)

Internal Hysteresis Voltage

(Pin 2 Not Connected)

Additional Hysteresis (Note 4)

(Pin 2 Connected to VCC)

Failsafe Threshold (TA = – 20° to + 85°C) (Note 7) V

NOTES: 1. Output pulses are centered with respect to zero crossing point. Pulse width is adjusted by the value of R

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 VCC. Refer to application curves.

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 VCC. Refer to application curves.

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

I

CC

EE
ref

I

O

OL
T

off

IB

V

TR

V

IH

V

FSth

— 0.9 1.5

–10 – 9.0 – 8.0 V

– 6.5 – 5.5 – 4.5 V

90 100 130
— — 10 µA

P

50 — 100

–10 — +10 mV

— — 0.1 µA

S
S

— 40.96 — sec
50 70 90 mV

280 350 420

— 10 —

H

280 350 420
180 — 300 mV

. Refer to application curves.

sync

mA

mA

µs

mV

mV

mV

2

MOTOROLA ANALOG IC DEVICE DATA

UAA2016

Figure 1. Application Schematic

S1

S2

R

S

def

NTC

R

2

R

R

1

3

Sense Input

Temp. Red.

Hys

V

3

4

2

Adj

1

ref

R

Failsafe

++

+

4–Bit DAC

11–Bit Counter

+

–

1/2

Sampling

Full Wave

Logic

Synchronization

8

Sync

R

sync

Internal

Reference

UAA2016

Pulse

Amplifier

Supply

Voltage

5

V

EE

R

S

6

7

Output

+V

CC

C

F

R

out

MAC212A8

220 Vac

Load

APPLICATION INFORMATION

(For simplicity , the LED in series with R

is omitted in the

out

following calculations.)

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
consumption. Use Figure 4 to determine R

according to

out

the triac maximum gate current (IGT) and the application low
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.

For an application to work down to – 20°C, R

should be

out

60 Ω. It is assumed that: IGT(T) = IGT(25°C)  exp (–T/125)
with T in °C, which applies to the MAC212A8.

Output Pulse Width, R

The pulse with TP is determined by the triac’s I

sync

Hold

, I

Latch

together with the load value and working conditions
(frequency and voltage):

Given the RMS AC voltage and the load power, the load
value is:

RL = V2rms/POWER

The load current is then:

I

Load

+

(Vrms

Ǹ

2

sin(2pft)–VTM)ńR

L

where VTM is the maximum on state voltage of the triac, f is
the line frequency .

Set I

Load

= I

for t = TP/2 to calculate TP.

Latch

Figures 6 and 7 give the value of TP which corresponds to
the higher of the values of I
VTM= 1.6 V. Figure 8 gives the R

Hold

and I

sync

, assuming that

Latch

that produces the

corresponding TP.

R

Supply

and Filter Capacitor

With the output current and the pulse width determined as
above, use Figures 9 and 10 to determine R
that the sinking current at V

pin (including NTC bridge

ref

Supply

, assuming

current) is less than 0.5 mA. Then use Figure 11 and 12 to
determine the filter capacitor (CF) according to the ripple
desired on supply voltage. The maximum ripple allowed is

1.0 V.

T emperature Reduction Determined by R

1

(Refer to Figures 13 and 14.)

MOTOROLA ANALOG IC DEVICE DATA

3

UAA2016

Figure 2. Comparison Between Proportional Control and ON/OFF Control

Room

Temperature

°

C)

T (

Heating

Power

P(W)

Proportional Band

Proportional Temperature Control

D

Reduced Overshoot

D

Good Stability

Time (minutes, Typ.)

ON/OFF Temperature Control

D

Large Overshoot

D

Marginal Stability

Overshoot

Time (minutes, Typ.)

Time (minutes, Typ.)Time (minutes, Typ.)

AC Line

Waveform

Gate Current

Pulse

14 x R

+

T

P

sync

Vrms

Figure 3. Zero V oltage Technique

TP is centered on the zero–crossing.

T

P

I

Hold

I

Latch

7 10

2Ǹxpf

5

(µs)

)

f = AC Line Frequency (Hz)

Vrms = AC Line RMS V oltage (V)

R

= Synchronization Resistor (

sync

Ω

)

4

MOTOROLA ANALOG IC DEVICE DATA

UAA2016

CIRCUIT FUNCTIONAL DESCRIPTION

Power Supply (Pin 5 and Pin 7)

The application uses a current source supplied by a single
high voltage rectifier in series with a power dropping resistor.
An integrated shunt regulator delivers a VEE voltage of
– 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.

T emperature Sensing (Pin 3)

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.)

T emperature Reduction

For energy saving, a remotely programmable temperature
reduction is available on Pin 4. The choice of resistor R
connected between Pin 4 and VCC sets the temperature
reduction level.

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
hysteresis. The external resistor R3 connected to Pin 2 sets
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 VCC. In that

case the level is set at 5°C. This configuration can be useful
for low temperature inertia systems.

Sawtooth Generator

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.

Noise Immunity

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.

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.

Sampling Full Wave Logic

Two consecutive zero–crossing trigger pulses are

1

generated at every positive mains half–cycle. This ensures
that the number of delivered pulses is even in every case.
The pulse length is selectable by R

connected on Pin 8.

sync

The pulse is centered on the zero–crossing mains waveform.

Pulse Amplifier

The pulse amplifier circuit sinks current pulses from Pin 6
to VEE. The minimum amplitude is 70 mA. The triac is then
triggered in quadrants II and III. The effective output current
amplitude is given by the external resistor R
an LED can be inserted in series with the Triac gate (see
Figure 1).

. Eventually,

out

Figure 4. Output Resistor versus

Triac Gate Current

200
180

Ω

160
140
120
100

80

out

R , OUTPUT RESISTOR ( )

60
40

20

IGT, TRIAC GATE CURRENT SPECIFIED AT 25°C (mA)

TA = +10°C

TA = 0°C

TA = – 20°C

TA = –10°C

MOTOROLA ANALOG IC DEVICE DATA

504030 60

100

80

60

40

20

Out(min)

I , MINIMUM OUTPUT CURRENT (mA)

0

Figure 5. Minimum Output Current

versus Output Resistor

TA = + 85°C

TA = – 20°C

R

, OUTPUT RESISTOR (

out

Ω

)

200180160140120100806040

5

UAA2016

Figure 6. Output Pulse Width versus

Maximum Triac Latch Current

120

µ

100

80

110 Vrms

60

220 Vrms

40

P

T , OUTPUT PULSE WIDTH ( s)

20

I

Latch(max)

Figure 8. Synchronization Resistor

versus Output Pulse Width

400

Ω

300

200

100

F = 50 Hz

2.0 kW Loads
VTM = 1.6 V

°

C

TA = 25

, MAXIMUM TRIAC LATCH CURRENT (mA)

F = 50 Hz

220 Vrms

110 Vrms

Figure 7. Output Pulse Width versus

Maximum Triac Latch Current

120

µ

100

110 Vrms

80

60

220 Vrms

40

P

T , OUTPUT PULSE WIDTH ( s)

6050403020100

20

I

Latch(max)

, MAXIMUM TRIAC LATCH CURRENT (mA)

F = 50 Hz

1.0 kW Loads
VTM = 1.6 V

°

C

TA = 25

6050403020100

Figure 9. Maximum Supply Resistor

Ω

60

50

40

30

versus Output Current

V = 220 Vrms
F = 50 Hz

TP = 50 µs

100 µs
150 µs

sync

0

R , SYNCHRONIZATION RESISTOR (k )

Ω

30

25

20

15

Supply

R , MAXIMUM SUPPLY RESISTOR (k )

10

µ

TP, OUTPUT PULSE WIDTH (

s)

Figure 10. Maximum Supply Resistor

versus Output Current

V = 110 Vrms
F = 50 Hz

TP = 50 µs

IO, OUTPUT CURRENT (mA)

100 µs
150 µs

200 µs

Supply

R , MAXIMUM SUPPLY RESISTOR (k )

10080604020

20

IO, OUTPUT CURRENT (mA)

200 µs

1007550250

Figure 11. Minimum Filter Capacitor

versus Output Current

90

µ

80

70

60

50

F(min)

40

1007550250

C , MINIMUM FILTER CAPACITOR ( F)

IO, OUTPUT CURRENT (mA)

Ripple = 1.0 Vp–p
F = 50 Hz

200 µs

150 µs

100 µs

TP = 50 µs

100806040200

6

MOTOROLA ANALOG IC DEVICE DATA

UAA2016

180

µ

160

140

120

100

F(min)

80

C , MINIMUM FILTER CAPACITOR ( F)

0

6.0

C)

°

5.6

5.2

4.8

4.4

R

T , TEMPERATURE REDUCTION (

4.0

Figure 12. Minimum Filter Capacitor

versus Output Current

Ripple = 0.5 V
F = 50 Hz

200 µs

150 µs

100 µs

TP = 50 µs

80604020

IO, OUTPUT CURRENT (mA)

Figure 14. T emperature Reduction versus

T emperature Setpoint

R1 = 0

10 kΩ NTC

100 kΩ NTC

TS, TEMPERATURE SETPOINT (

°

C)

p–p

100

302622181410

Figure 13. T emperature Reduction versus R

7.0

C)

°

6.0

5.0

4.0

3.0

2.0

1.0

R

T , TEMPERATURE REDUCTION (

0

R1, TEMPERATURE REDUCTION RESISTOR (kΩ)

Figure 15. R

4

3

2

1

DEF

R /(NOMINAL NTC VALUE) RATIO

0

100 kΩ NTC

10 kΩ NTC

versus Preset T emperature

DEF

T

, PRESET TEMPERATURE (

DEF

Setpoint = 20°C

10 kΩ NTC

100 kΩ NTC

2520151050

°

C)

1

1009080706050403020100

30

Figure 16. RS + R2 versus Preset Setpoint Figure 17. Comparator Hysteresis versus R

V , COMPARATOR HYSTERESIS VOLTAGE (V)

0.5

0.4

0.3

0.2

0.1

H

0

0

R3, HYSTERESIS ADJUST RESISTOR (kΩ)

8

6

4

2

S2

R + R /(NOMINAL NTC VALUE) RATIO

(

0

T

10 kΩ NTC

R

DEF

100 kΩ NTC

R

DEF

TS, TEMPERATURE SETPOINT (

= 310 k

Ω

°

C)

DEF

= 4°C

= 29 k

Ω

34302622181410

MOTOROLA ANALOG IC DEVICE DATA

3

400300200100

7

NOTE 2

–T–

–T–

SEATING
PLANE

H

58

14

F

–A–

N

D

G

0.13 (0.005) B

–A–

58

4X P

–B–

14

G

C

8X D

K

OUTLINE DIMENSIONS

–B–

C

K

M

A

T

0.25 (0.010)MB

SEATING
PLANE

SS

A0.25 (0.010)MTB

UAA2016

P SUFFIX

PLASTIC PACKAGE

CASE 626–05

ISSUE K

L

J

M

M

M

D SUFFIX

PLASTIC PACKAGE

CASE 751–05

ISSUE N

(SO–8)

M

R

X 45

_

M

NOTES:

1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.

2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).

3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

DIM MIN MAX MIN MAX

A 9.40 10.16 0.370 0.400
B 6.10 6.60 0.240 0.260
C 3.94 4.45 0.155 0.175
D 0.38 0.51 0.015 0.020
F 1.02 1.78 0.040 0.070
G 2.54 BSC 0.100 BSC
H 0.76 1.27 0.030 0.050
J 0.20 0.30 0.008 0.012
K 2.92 3.43 0.115 0.135
L 7.62 BSC 0.300 BSC
M ––– 10 ––– 10
N 0.76 1.01 0.030 0.040

NOTES:

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.

DIM MIN MAX MIN MAX

_

F

J

A 4.80 5.00 0.189 0.196
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019
F 0.40 1.25 0.016 0.049
G 1.27 BSC 0.050 BSC

J 0.18 0.25 0.007 0.009
K 0.10 0.25 0.004 0.009
M 0 7 0 7
P 5.80 6.20 0.229 0.244
R 0.25 0.50 0.010 0.019

INCHESMILLIMETERS

__

INCHESMILLIMETERS

____

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
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
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.

Mfax is a trademark of Motorola, Inc.

How to reach us:
USA/EUROPE /Locations Not Listed: Motorola Literature Distribution; JAPAN: Motorola Japan Ltd.; SPD, Strategic Planning Office, 141,

P.O. Box 5405, Denver, Colorado 80217. 1–303–675–2140 or 1–800–441–2447 4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan. 81–3–5487–8488

Customer Focus Center: 1–800–521–6274
Mfax: [e-mail] – TOUCHTONE 1–602–244–6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre,

Motorola Fax Back System – US & Canada ONLY 1–800–774–1848 2, Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong.

– http://sps.motorola.com/mfax/ 852–26629298

HOME PAGE: http://motorola.com/sps/

8

◊

MOTOROLA ANALOG IC DEVICE DATA

UAA2016/D