UAA4713FP

UAA4713 MOTION DETECTOR INTERFACE ADVANCE DATA 50/ 60 Hz AC SUPPLY INPUT FOR PYROELECTRICAL SENSOR INPUT FOR PHOTORESISTIVE SENSOR SENSOR FILTER AMPLIFIER PROGRAMMABLE ON-TIMER TRIAC OUTPUT AND RELAY OUTPUT SHORT CIRCUIT PROTECTION LOW QUIESCENT CURRENT TWO-WIRE TECHNIQUE DESCRIPTION The UAA4713 is a monolithic integrated circuit intended to control triac or relay switch for ACmains timer applications.The device can be used in a wide range of industrial and consumer applications as light control, automatic door opening detector, fire alarm, fluid level control . The circuit processes the output signal of an infrared pyroelectric detector which senses temperature changes caused by heat radiation of the human body. BLOCK DIAGRAM DIP-14 SO-14 ORDERING NUMBERS: UAA4713DP UAA4713FP If the sensor detects a temperature change, a programmable timer will start and switch a lamp or other loads to the mains. A further input for a photo-resistive sensor allows to program circuit operation depending on the day-light intensity. Internal circuits avoid false triggering of the external actuators. (see functional diagram). December 1991 1/14 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. UAA4713 FUNCTIONAL DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol I7 I7 I7 I9 V6-3 V8-3 V14-3 V10-12 Top Tstg,T j Ptot AC Supply Current Peak Current (T.P < 200µs) Sourge Current (not repetitive 10ms) ZCD Max. Input Current Negative Clamp Voltage Positive Clamp Voltage Comp. Input Voltage Differential Input Voltage Operating Temperature Junction and Storage Temperature Total Power Dissipation (Tj = 85°C) Parameter Test Conditions 60 200 500 5 -9 9.5 ±8 ±8 -25 to 85 -40 to 150 650 Unit mA mA mA mA V V V V °C °C mW THERMAL DATA Symbol Rth j-amb Parameter Thermal Resistance Junction-ambient max Value 100 Unit °C/W 2/14 UAA4713 PIN CONNECTION (Top view) PIN FUNCTIONS Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Symbols TCI PRI GND ROUT TOUT VACI V+ ZCD NII VREF II OP OUT WCI Time control Input Photosensor comparator input Ground Relay output Triac output Negative clamp voltage AC-input supply Positive clamp voltage Zero cross detector Non-invert input sensor amplifier Sensor reference voltage Invert input sensor amplifier Output sensor amplifier Window comparator input Functions 3/14 UAA4713 ELECTRICAL CHARACTERISTICS (IS = + 2mA to +10mA;Tamb = 25°C unless otherwise specified) Symbol IS VV+ VREF IROUT VR HIGH IR ITOUT VZCD IZCD IPRI VPRth ITCI tTIM Parameter Operative Supply Current Negative Clamping Voltage Positive Clamping Voltage Sensor Reference Voltage IREF = 50µA IREF = 200µA IR OUT = 80µA VR OUT = 0.4V during on-time ±IS = 0.7mA Test Condition Pin 7 6 8 11 4 4 4 5 9 9 VPRI = 0V IS = 0.7mA VTCI 0 to V+ VTCI 11/12 V+ 9/12 7/12 5/12 3/12 1/12 tD Delay Time Between Window Comparator Input and Timer Start Delay Time Between Timer Stop to Retrigger 50Hz V+ V+ V+ V+ V+ 14/4 2 2 1 14/4 1 50 ± 7.4 1.6 6 3 0 50 0 4.48 40 81 163 327 Continue 40 50 60 ms 10 3.3 65 ±8 ±8.6 10 14 3.6 0.5 60 0 3.73 33.3 67.5 135.8 272.5 Min. ± 0.7 -7.8 7.6 6 5 80 2 8 6.6 Typ. Max. + 15 -7 8.4 7.2 7.2 Unit mA V V V V µA V mA mA V µA µA V µA Hz s s s s s s Output Current Relay Driver during on-time VROUT = 0V Relay Driver Source Saturation Voltage Relay Sink Output Current Triac Firing Current Zero Cross Detector Clamping Voltage Zero Cross Detector Operating Current Photoresistor Source Current Photoresistor Threshold Voltage Timer Control Input Current On-Timer Counter Duration (depends on the mains frequency and on externally adjustable Timer Control Input Voltage) + 1/2 cicle precision 0V (GND) 60Hz tDR 50Hz 60Hz ITOL Vth WCI IWCI OP. AMP. RI IIO IIB VIO VCM VO IO ISC GV Input Resistance Input Offset Current Input Bias Current Input Offset Voltage Common Mode Volt. Renge Output Voltage Swing Output Current Output Short Circuit Current Large Signal Open Loop Voltage Gain RL = 10K 10/12 10/12 10/12 10/12 10/12 13 13 13 Triac Output Leakage Current VTO = 0V Window Comparator T4 Window Comparator Input Current Pin 2 open VWCI = -2V to + 2V 5 14/4 14 14/4 33.3 41.6 500 600 50 ms ms ms 10 ±1.20 ±1.3 ± 1.40 ±1 µA V mA 1 25 1 - 10 - 4.5 ±4 1.5 3 80 100 +10 5 ±5 MΩ nA µA mV V V mA mA V 4/14 UAA4713 Figure 1: Open Loop Frequency Response Figure 2: VREF versus IREF Figure 3: Supply Current 5/14 UAA4713 SYSTEM DESCRIPTION (see Functional Diagram) If a heat source moves in front of the IR-detector, the sensor delivers a quasi sinusoidal AC-signal in the µV to mV range. The operational amplifier amplifies the sensor signal by 72dB. To reject an unwanted signal, a band pass filter is needed. If the AC-level at pin 14 exceeds the window comparator thresholds, the programmable timer will start. To suppress short sensor signals, a 50ms time filter is implemented between the window comparator output and the programmable timer. This function improves the noise immunity. After the reset of the timer a second timer will provide a 600ms dead time to prevent retriggering of the timer. This function avoids restarting of the timer, when the turned off lamp temperature. decreases The lamp switched by the triac can be located close to the sensor. To avoid circuit operation during day-time, a photo resistor (LDR) senses the light intensity and switches off the circuit. The capacitor at pin 2 prevents circuit start-up during short shadow phases, when a person passes by the sensor. From the analog input pin 1 via the AD-converter the on-time duration can be programmed in 7 Figure 4 steps (see tTIM table in the electical characteristics). The timer is clocked by the mains frequency. Two outputs for various applications are available. Pin 5 is the trigger output for triac gate. Pin 4 output can be used to switch a relay or other loads. The zero crossing detector provides the firing pulse for the triac at the right time, shortly after the zero crossing of the AC-signal. The RC-network at pin 7 supplies current to the circuit via a double wave rectification which is provided by a split power supply. Due to the capacitive energy transfer into pin 7, the circuit will also be supplied with current if the triac is fired. A short wire for circuit supply is not needed. The circuit works similar to a simple two-terminal switch and can be installed in parallel with ordinary mechanical pulse switches (fig. 4). After a short supply connection via an external pulse switch, the circuit timer will also start without a sensor signal. Therefore the circuit can also be used as an ordinary light timer without the IR-moving sensor feature. Figure 5: Different Possible Filter Solutions 6/14 UAA4713 Figure 6: Triac Application 7/14 UAA4713 Figure 7: Relay Application 8/14 UAA4713 APPLICATION INFORMATION 1. HOW TO CHOOSE THE TRIAC ASSOCIATED TO THE MOTION DETECTOR UAA4713 Analysis of the Triac Associated to the Motion Detector UAA4713 Associated with the UAA4713, the Triac is defined by the driver output stage (Triac output pin 5) and the characteristics of the load. The Triac is consequently defined by: 1) The gate sensitivity 2) The surge current capability 3) The RMS Triac current 4) The blocking voltage capability 1) The gate sensitivity The ”Triggering gate current” is the parameter to be taken into consideration. The I GT is given at 25°C. as a maximum value required to trigger the Triac. ex. BTA06-600CW = IGT max (mA) = 35mA The UAA4713 Triac output provides a current of 65mA typical. ITout = 65mA(Typ) = IG In order to control the Triac properly IG should be greater than 1.5 x IGT or ITout > 1.5 IGT For this reason it is suggested to use a snubberless Triac of the CW series (IGT < 35mA). 2) The surge current capability In the Triac databook the surge current capability of the Triac is given by the non repetitive surge peak current: ITSM ex. BTA06-600CW ITSM at TJ initial = 25°C t = 8.3mA: 63A t = 10ms: 60A The choice of the Triac is defined by the following application parameters: a)The starting performance, and the ratio of the nominal resistance to the cold resistance, KR Imax > KR x Inominal x √2   b)The thermal fast fuse behaviour during short-circuit condition. (I2t) (Triac) > (I2t) (fuse) To select the ITsm (given as a minimum value) the following table is suggested. Mains: VAC (V) Power (W) 600 1000 >1000 240V ITsm (min) 50 80 >100 110V ITsm (min) 80 120 >150 3) RMS Triac Current The RMS Triac current ITRMS is defined by the light power P: ITRMS > 1. 25 x P x VAC It depends also on the heat sink which has to limit the junction temperature in the worse case conditions (Tamb max and ITRMS). With the snubberless triac ITRMS ranges from 6A to 25A. 4) Blocking Voltage Capability The maximum blocking voltage VDRM is defined by the mains: Country EUROPE USA Mains Voltage (V) VAC 240 110 VDRM (V) 600 400 5) Conclusion: Selector guide with the above parameters the optimal device selection for a given power to be controlled is given in the following table: LIGHT POWER (W) 600 1,000 > 1,000 MAINS VOLTAGE VAC (V) 240 BTA 06 600 CW BTA 08 600 CW BTA X 600 CW X = 10 X = 12 X = 16 110 BTA 08 400 CW BTA 12 400 CW BTA X 400 CW X = 12 X = 16 (A) Ref: High Performance Triacs that need no snubber (DSTRIACBK/1088) 9/14 UAA4713 APPLICATION INFORMATION (continued) 2. MOTION DETECTOR DEMO BOARD Figure 8: Demo Board Diagram This document allows the user to construct rapidly a Demo and Test Board for the UAA4713 10/14 UAA4713 APPLICATION INFORMATION (continued) Demo Board - Part List QTY 1 1 1 1 DEVICE UAA4713DP OR UAA4713FP BTA06-600 (240V mains) BTA08-400 (110V mains) KRX10FL or IRA - EI00S series LDR07 CAPACITORS QUANTITY 4 2 2 1 1 1 1 VALUE 100µF/35V 330nF 47nF 4.7nF 68nF 400V 150nF 250V 3.3µF 35V 3 3 1 1 1 1 2 POTENTIOMETERS TRIAC TRIAC SENSOR WITH FRESNEL LENS Pyroelectic Infrared Sensor PHOTORESISTOR DESCRIPTION INTEGRATED CIRCUIT SUPPLIER SGS-THOMSON SGS-THOMSON SGS-THOMSON PHILIPS COMPONENTS MURATA PHILIPS COMPONENTS RESISTORS (0.25W) QUANTITY VALUE 1M Ω 47kΩ 680Ω 1K Ω 470KΩ 220KΩ 500KΩ Figure 9: Demo Board Photo IRA - E100S 11/14 UAA4713 DIP14 PACKAGE MECHANICAL DATA DIM. MIN. a1 B b b1 D E e e3 F I L Z 1.27 3.3 2.54 0.050 8.5 2.54 15.24 7.1 5.1 0.130 0.100 0.51 1.39 0.5 0.25 20 0.335 0.100 0.600 0.280 0.201 1.65 mm TYP. MAX. MIN. 0.020 0.055 0.020 0.010 0.787 0.065 inch TYP. MAX. 12/14 UAA4713 SO14 PACKAGE MECHANICAL DATA DIM. MIN. A a1 a2 b b1 C c1 D E e e3 F L M S 3.8 0.4 8.55 5.8 1.27 7.62 4.0 1.27 0.68 8 (max.) 0.15 0.016 8.75 6.2 0.35 0.19 0.5 45 (typ.) 0.336 0.228 0.050 0.300 0.157 0.050 0.027 0.344 0.244 0.1 mm TYP. MAX. 1.75 0.25 1.6 0.46 0.25 0.014 0.007 0.020 0.004 MIN. inch TYP. MAX. 0.069 0.009 0.063 0.018 0.010 13/14 UAA4713 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. © 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. 14/14