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Features
* * * * *
Adjustable and Retriggerable Tracking Time Window Monitoring for Sensor Input Enable Input for Triggering Internal Noise Suppression (40 ms) and Retrigger Blocking (640 ms) Two- or Three-wire Applications
Applications
* Motion Detectors * Touch Sensors * Timers
Timer Control for Triac and Relay U2100B
1. Description
The timer control circuit U2100B uses bipolar technology. It has different mode selections (zero voltage switch, phase control and relay control). The output stage is triggered according to input conditions. It can be used in triac application for two- or three-wire systems as a power switch.
Rev. 4769C-INDCO-07/05
Figure 1-1.
Block Diagram with External Circuit
8 C2 0.5 VRef + Trigger signal 6
-VRef
Supply voltage limitation Voltage control monitoring Sync Mode selection
2 -VS 4
C1 L R1 Rsync Load Z D1
Trigger window + -
Noise suppression 40 ms Retrigger delay 640 ms
Control logic
3 Output
RG
Vmains
5
0.65 VRef 1 GND N
Enable 0.6 VRef Ct 0.5 VRef 7 RC Oscillator Rt Divider 1:210 ON OFF
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U2100B
2. Pin Configuration
Figure 2-1. Pinning DIP8/SO8
GND -VS OUTPUT SYNC 1 2 8 7 VREF OSC TRIG EN
U2100B
3 4 6 5
Table 2-1.
Pin 1 2 3 4 5 6 7 8
Pin Description
Symbol GND -VS OUTPUT SYNC EN TRIG OSC VREF Function Reference point Supply voltage Driver output Synchronization and mode selection Enable Input trigger signal RC oscillator Reference voltage
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3. General Description
The monostable integrated power-control circuit U2100B can be used according to the mode selection in relay or triac applications. In addition, it can be used in triac applications for two-wire systems as power switch (the load in series to the switch), where the supply voltage for the control unit is gained from the remaining phase angle (min operation). Figure 3-1. Two-wire Circuit
L
Control
N
Figure 3-2.
Three-wire Circuit
L
Control
N
For three-wire switch systems, two operational modes are possible: - Zero voltage switch operation for triac control - Static operation for relay control
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U2100B
3.1 Mode Selection Pin 4 and Supply Voltage Pin 2
The operational modes can be selected by the external voltage at the synchronous input pin 4 (clamping). The mode selection determines the current requirement of the relay's or triac's driver stage and hence the selection of the supply voltage.
3.2
Zero Voltage Switch Operation (Figure 3-3 on page 6)
Selection condition: V4 = internal synchronous limitation, without external clamping
VM - VS R 1 0.85 -------------------2 I tot
Itot = IS + Ip + IX where: IS IP IX VM = Supply current of the IC without load = Average trigger current IG = External circuit current requirement = Mains voltage
Required firing pulse width tp
IL x VM 2 t p = -- arcsin ------------------- P x 2
where: IL P = Triac latching current = Power at load Z
V M [V] x 2sin ( x t p [s] ) - 0.7 R sync [k] -------------------------------------------------------------------------------- - 176 -2 1.8 x 10
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Figure 3-3.
Zero Voltage Switch Operation
D1
2 -VS
R1 L
C1 4 Sync Rsync
Z
VM
3 Output 1 GND
RG IG N
3.3
DC Operation
Selection condition (Figure 3-4): +V4 = 6.1V, -V4 = internal limitation where: R0 1/10 Xc
VM - VS X c = 0.85 -------------------I tot
Itot = IS + IRel + IX
1 C 0 = ---------------- x XC
Figure 3-4.
DC Operation
2 -VS 1 GND C1
22 V N VM Rel C0 R0 IRel Rsync 230 V~ L
3 Output
4 Sync
6
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U2100B
3.4 min Operation
Selection condition (Figure 3-5): -V4 = 6.5 to 7.8V, +V4 = internal limitation
3.6 V R max = R sync ---------------------------------------V R(peak) - 3.6 V 10 V R min = R sync ---------------------------------------V M x 2 - 10 V
VR(peak) is the peak voltage of the remaining phase angle, which should be high enough to generate the supply voltage, VS. Figure 3-5. min Operation (Two-wire Operation)
D1 IN 4007 -VS 2 C1 4 Sync Rsync R 1N4148 6.8 V 3 Output 1 GND RG IG N VR(peak) C0 R0 Z L 22 V
VM 230 V~
C1 Co Ro Rsync R RG D1
= = = = = = =
100 F/35V 0.33 F/250V ~ 390 220 k 10 k 390 IN 4007
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3.5
Tracking Time Pin 7
An internal RC oscillator with a following divider stage 1:210 allows a very long and reproducible tracking time. The RC values for the required final time, tt, can be calculated as follows:
t t [s] x 10 R t [] = ---------------------------------------------------1.6 x 1024 x C t [F] t t [s] x 10 C t [F ] = -------------------------------------------------1.6 x 1024 x R t [] C t [F] x R t [] x 1.6 x 1024 t t [s] = -------------------------------------------------------------------------6 10
6 6
3.6
Trigger Inputs Pins 5 and 6
Two AND-connected, identical inputs determine the trigger conditions of the monostable time stages (Figure 3-6, Figure 3-7 on page 9), i.e., both inputs must be in position "ON" so that the output is switched on. The tracking time starts after the trigger conditions have elapsed. The output ON state is given until the tracking time has elapsed. Input pin 5 is a simple comparator, whereas input pin 6 is designed as a window discriminator. The noise suppression for tON = 40 ms prevents peak noise signals at the inputs which could trigger the circuit. At the same time, the retrigger function is delayed for a duration of 640 ms (tOFF) to avoid noise signal that may trigger the relay. Figure 3-6. Trigger Condition, Pin 5
V5 0 OFF T1 = 0.5 VRef Hysteresis T2 = 0.65 VRef ON VRef
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Figure 3-7. Trigger Condition, Pin 6
V6 0 ON T1 = 0.5 VRef T2 = 0.65 VRef OFF ON VRef
4. Absolute Maximum Ratings
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Supply Supply current Peak current t 10 ms Supply voltage Reference voltage source Output current Synchronization Input current t 10 ms Window Monitoring Input voltage Enable Schmitt Trigger Input voltage Driver Output Collector voltage Storage temperature range Junction temperature Ambient temperature range 3 -Vo Tstg Tj Tamb VS to 2 -40 to +125 125 0 to 100 V C C C 6 5 -V1 VRef to 0 V -V1 VRef to 0 V 8 Pin 2 -IS -is -VS IO ISync. iSync. 10 60 32 3 5 20 mA mA V mA mA mA Symbol Value Unit
4
5. Thermal Resistance
Parameters DIP8 Junction ambient SO8 on PC board SO8 on ceramic Symbol RthJA RthJA RthJA Value 110 220 140 Unit K/W K/W K/W
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6. Electrical Characteristics
VS = -18V, Tamb = 25C, reference point pin 1, unless otherwise specified. Parameters Supply-voltage limitation Current consumption Supply-voltage Monitoring ON-threshold OFF-threshold Reference voltage Synchronization Input current Voltage limitation Remaining phase angle min threshold Zero identification ON Zero identification OFF 4 Vsync +Vsync -Vsync -Vsync +Vsync 6 -VI/VRef -VI/VRef 5 -VI/VRef -VI/VRef 5 VI/VRef VI II 3 I3 = 100 mA V3-2 I3 100 2 V mA 0.25 0.20 100 100 0.15 200 500 mV nA 0.33 0.62 0.3 0.6 0.27 0.58 OFF ON 1 f = --------------------------------1.6 x R t x C t 7-1 7-8 7 0.52 0.67 0.49 0.65 0.46 0.63 V4 limit V4 limit 6.5 to 7.8 V4 limit 6.5 to 7.8 V V V V I4 = 1 mA ON Off 4 VT IT VT IT 1.5 8.5 4 20 V A V A I8 = 0.1 mA I8 = 1.5 mA 8 4 isync Vsync VT VT 0.1 8.8 3.6 1.8 9.4 4 2 1.1 10 4.4 2.2 mA V V V Test Conditions IS = 800 A IS = 2 mA I3 = 0 2 -VS -VS -VRef -VRef 4.95 4.75 15 6.5 5.45 5.45 V V V V Pin 2 Symbol -VS -VS -IS Min. 21 21.3 Typ. Max. 23 24 750 Unit V V A
Operation Selection Zero voltage switch min operation DC mode Window Monitoring, Figure 3-7 on page 9 Threshold 1 Threshold 2 Enable Schmitt Trigger, Figure 3-6 on page 8 Threshold 1 Threshold 2 Oscillator Threshold 1 Threshold 2 Input current Output Stage Saturation voltage Output current
10
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7. Applications
Figure 7-1.
N 1 390 Triac R0 C0 1N4007 D1 -VS 2 330 nF 390 3 R3 220 k/0.5 W D3 1N 4148 D4 5.1 V 100 F R7 10 k C1 Tracking time 2.5 M R5
+
Lamp Time Control 18 Seconds to 23 Minutes for Two-wire Systems
8 330 nF 7
U2100B
6
C3 Timer start
R2 4 5 33 k R6 R4
-
S1
33 k C2 4.7 F
D2 22 V L
Figure 7-2.
Fan Tracking Time Control 18 Seconds to 23 Minutes
N M R2 5
R7
4 100 k
330 nF C0
390 R0
6 100 k C3 7 330 nF 8 R5 100 k C2 4.7 F R6 R4 2.5 M 33 k
D1
3
U2100B
2
S1 D1 C1
1
22 V 100 F REL 1000 L S1 open, motor starts
Tracking time adjustment
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8. Ordering Information
Extended Type Number U2100B-xY U2100B-xFPY U2100B-xFPG3Y Package DIP8 SO8 SO8 Remarks Tube Tube Taped and reeled
9. Package Information
P a c k a g e D IP 8
D im e n s io n s in m m
9 .8 9 .5 1 .6 4 1 .4 4 7 .7 7 7 .4 7
4 .8 m a x 6 .4 m a x 0 .5 m in 0 .5 8 0 .4 8 7 .6 2 8 5 2 .5 4 3 .3 0 .3 6 m a x 9 .8 8 .2
te c h n ic a l d ra w in g s a c c o rd in g to D IN s p e c ific a tio n s
1
4
12
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Package SO8
Dimensions in mm
5.00 4.85 1.4 0.4 1.27 3.81 8 5 0.25 0.10 0.2 3.8 6.15 5.85 5.2 4.8 3.7
technical drawings according to DIN specifications
1
4
10. Revision History
Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. 4769C-INDCO-07/05 4769B-INDCO-12/04 History * Put datasheet in a new template * Section 3.5 "Tracking Time Pin 7" on page 8 changed * Put datasheet in a new template * Table "Electrical Characteristics" on page 9 changed
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Printed on recycled paper.
4769C-INDCO-07/05

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