U2100B ATMEL | Alldatasheet
Document overview
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Technical content
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 1. Description The timer control circuit U2100B uses bipolar technology. It has different mode selec- tions (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. Timer Control for Triac and Relay U2100B Rev. 4769C–INDCO–07/05
4769C–INDCO–07/05 U2100B Figure 1-1. Block Diagram with External Circuit Supply voltage limitation Voltage control monitoring Noise suppression 40 ms Retrigger delay 640 ms Mode selectionSync Control logic Trigger window
0.65 VRef
0.5 VRef OFF
RC Oscillator Divider 1:210
0.5 VRef
-VS RG3 Output GND L N Load Z Rsync Vmains Rt -VRef
0.6 VRef
4769C–INDCO–07/05 U2100B 2. Pin Configuration Figure 2-1. Pinning DIP8/SO8 GND -VS OUTPUT SYNC VREF OSC TRIG EN U2100B Table 2-1. Pin Description Pin Symbol Function
1 GND Reference point
2 –VS Supply voltage
3 OUTPUT Driver output
4 SYNC Synchronization and mode selection
6 TRIG Input trigger signal
7 OSC RC oscillator
8 VREF Reference voltage
4769C–INDCO–07/05 U2100B
3.1 Mode Selection Pin 4 an d 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 Itot = IS + Ip + IX where: IS = Supply current of the IC without load IP = Average trigger current IG IX = External circuit current requirement VM = Mains voltage Required firing pulse width tp where: IL = Triac latching current P = Power at load Z R1 0.85 VM VS–
2 Itot
ω---arcsin IL VM× P2× ⎛⎞= Rsync[kΩ] VM[V] 2sin ω tp[s]×() 0.7–× 1.8 10 -2×
4769C–INDCO–07/05 U2100B Figure 3-3. Zero Voltage Switch Operation
3.3 DC Operation
Selection condition (Figure 3-4): +V4 = 6.1V, –V4 = internal limitation where: R0 ≈ 1/10 Xc Itot = IS + IRel + IX Figure 3-4. DC Operation Sync Output Z L NGND Rsync VM -VS RG IG Xc 0.85 VM VS– Itot -VS Output GND 22 V Sync Rel N L 230 V~ IRel Rsync VM
4769C–INDCO–07/05 U2100B 3.4 αmin Operation Selection condition (Figure 3-5): –V4 = 6.5 to 7.8V, +V4 = internal limitation VR(peak) is the peak voltage of the remaining phase angle, which should be high enough to gener- ate the supply voltage, VS. Figure 3-5. αmin Operation (Two-wire Operation) C1 = 100 µF/35V Co = 0.33 µF/250V ~ Ro =3 9 0 Ω Rsync =2 2 0 k Ω Rα =1 0 k Ω RG =3 9 0 Ω D1 = IN 4007 Rαmax Rsync 3.6 V Rαmin Rsync 10 V VM 21 0 V–× 22 V N 230 V~ -VS Sync RG Output Z GND L C0 R0 1N4148 6.8 V IN 4007 IG VR(peak) VMRsync Rα
4769C–INDCO–07/05 U2100B
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:
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 out- put 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 t ON = 40 ms prevents peak noise signa ls at the inputs which could trigger the circuit. At the same time, the retrigger function is delayed for a duration of 640 ms (t OFF) to avoid noise signal that may trigger the relay. Figure 3-6. Trigger Condition, Pin 5 Rt[Ω] tt[s] 10 6× Ct[µF ] tt[s] 10 6× tt[s] Ct[µF] R t[Ω]× 1.6× 1024× Hysteresis OFF ON T2 = 0.65 VRef VRef T1 = 0.5 VRef
4769C–INDCO–07/05 U2100B Figure 3-7. Trigger Condition, Pin 6 ON ON OFF VRef T2 = 0.65 VRef T1 = 0.5 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 Pin Symbol Value Unit Supply 2 Supply current Peak current t ≤ 10 ms S –is mA mA Supply voltage –V S 32 V Reference voltage source Output current 8I O 3m A Synchronization Input current t ≤ 10 ms 4 ±ISync. iSync. mA mA Window Monitoring Input voltage 6 –V 1 VRef to 0 V Enable Schmitt Trigger 5 Input voltage –V 1 VRef to 0 V Driver Output 3 Collector voltage –V o VS to 2 V Storage temperature range T stg –40 to +125 °C Junction temperature T j 125 °C Ambient temperature range T amb 0 to 100 °C 5. Thermal Resistance Parameters Symbol Value Unit Junction ambient DIP8 R thJA 110 K/W SO8 on PC board R thJA 220 K/W SO8 on ceramic R thJA 140 K/W
4769C–INDCO–07/05 U2100B 6. Electrical Characteristics VS = –18V, Tamb = 25°C, reference point pin 1, unless otherwise specified. Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Supply-voltage limitation IS = 800 µA IS = 2 mA 2 –VS –VS 21.3 V V Current consumption I 3 = 0 –I S 750 µA Supply-voltage Monitoring 2 ON-threshold –V S 15 V OFF-threshold –V S 6.5 V Reference voltage I8 = 0.1 mA I8 = 1.5 mA 8 –VRef –VRef 4.95 4.75 5.45 5.45 V V Synchronization 4 Input current ±i sync 0.1 1.1 mA Voltage limitation I 4 = ±1 mA ±V sync 8.8 9.4 10 V Remaining phase angle αmin threshold ON Off ±VT ±VT 3.6 1.8 4.4 2.2 V V Zero identification 4 Zero identification ON OFF ±VT ±IT ±VT ±IT 1.5 8.5 V µA V µA Operation Selection 4 Zero voltage switch ±V sync V4 limit αmin operation +Vsync –Vsync V4 limit 6.5 to 7.8 V V DC mode –Vsync +Vsync V4 limit 6.5 to 7.8 V V Window Monitoring, Figure 3-7 on page 9 6 Threshold 1 –V I/VRef 0.52 0.49 0.46 Threshold 2 –V I/VRef 0.67 0.65 0.63 Enable Schmitt Trigger, Figure 3-6 on page 8 5 Threshold 1 OFF –V I/VRef 0.33 0.3 0.27 Threshold 2 ON –V I/VRef 0.62 0.6 0.58 Oscillator 5 Threshold 1 7 - 1 V I/VRef 0.25 0.20 0.15 Threshold 2 7 - 8 V I 100 200 mV Input current 7 I I 100 500 nA Output Stage 3 Saturation voltage I 3 = 100 mA V 3-2 2V Output current I 3 100 mA f 1
4769C–INDCO–07/05 U2100B 9. Package Information 8. Ordering Information Extended Type Number Package Remarks U2100B-xY DIP8 Tube U2100B-xFPY SO8 Tube U2100B-xFPG3Y SO8 Taped and reeled 9.8 9.5 Di mensi ons i n mm 1.64 1.44 4.8 max 0.5 min 3.3 0.58 0.48 7.62 2.54 6.4 max 0.36 max 9.8 8.2 7.77 7.47 technical drawings according to DIN specifications
4769C–INDCO–07/05 U2100B 10. Revision History technical drawings according to DIN specifications Dimensions in mm 5.00 4.85 0.4 1.27 3.81 1.4 0.25 0.10 5.2 4.8 3.7 3.8 6.15 5.85 0.2 Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. History 4769C-INDCO-07/05 • Put datasheet in a new template
- Section 3.5 “Tracking Time Pin 7” on page 8 changed 4769B-INDCO-12/04 • Put datasheet in a new template
- Table “Electrical Characteristics” on page 9 changed
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