Full-wave Power Control Temperature Regulation Power Blinking Switch

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Full-wave Power Control Temperature Regulation Power Blinking Switch

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Direct Supply from Mains Current Consumption Very External Components Full-wave Drive Current Component Load Circuit Negative Output Current Pulse Typically Short-circuit Protected Simple Power Control Ramp Generator Reference Voltage
Full-wave Power Control Temperature Regulation Power Blinking Switch
Zero-voltage Switch with Adjustable Ramp T2117
Description
integrated circuit, T2117, designed zero-voltage switch bipolar technology. used control resistive loads mains triac zero-crossing mode. ramp generator allows power control function period group control, whereas full-wave logic guarantees that full mains cycles used load switching.
Rev. 4768B-INDCO-10/05
Figure 1-1.
Block Diagram with Typical Circuit, Period Group Control 100%
(250 (Rsync) Reference voltage Full-wave logic Comparator Pulse amplifier Ramp generator Synchronization Supply Load 1000
T2117
Configuration
Figure 2-1. Pinning DIP8/SO8
RAMP CRAMP VSYNC
T2117
OUTPUT
POSIN
NEGIN
Table 2-1.
Description
Symbol RAMP CRAMP POSIN NEGIN OUTPUT VSYNC Function Ramp output Ramp capacitor Non-inverting comparator input Inverting comparator input Supply voltage Trigger pulse output Ground Voltage synchronization
T2117
4768B-INDCO-10/05
T2117
General Description
integrated circuit T2117 triac controller zero-crossing mode. designed control power switching resistive loads mains supplies. Information regarding synchronous supply provided resistor RSync. avoid load mains, full-wave logic guarantees that complete mains cycles used load switching. fire pulse released when inverting input comparator negative (pin with respect non-inverting input (pin internal reference voltage. ramp generator with freely selectable duration performed capacitor ramp function used open-loop control (Figure 3-2), also applications with proportional band regulation (Figure 10-3 page 10). Ramp voltage available capacitor decoupled across emitter follower maintain lamp flicker specification, ramp duration adjusted according controlling load. internal reference voltage simple applications. that case, inactive connected (GND), Figure 10-5 page Figure 3-1. Internal Network
T2117
Ramp control
Figure 3-2.
Threshold Voltage Ramp -8.8
-1.6 Final voltage Vmin Initial voltage Vmax
-7.6
4768B-INDCO-10/05
Triac Firing Current (Pulse)
This depends triac requirement. limited gate series resistance which calculated follows:
Gmax Gmax Gmax Gmax
where: Gate voltage
IGmax Maximum gate current Average gate current Firing pulse width Mains period duration
Firing Pulse Width
This depends latching current triac load current. firing pulse width determined zero-crossing detection which influenced synchronous resistance, Rsync, (see Figure page
arc.
where Latching current triac Mains supply, effective Load power
total current consumption influenced firing pulse width which calculated follows:
sync
T2117
4768B-INDCO-10/05
T2117
Figure 5-1. Output Pulse Width
10.00 VMains
(ms)
1.00
0.10
(mA)
0.01
1000
10000
Figure 5-2.
Synchronization Resistance
2000 VMains 1600
Rsync
1200
1000 1200 1400
(µs)
4768B-INDCO-10/05
Supply Voltage
T2117 contains voltage limiting funtion connected with mains supply diode resistor supply voltage between limited typical value series resistance calculated follows (Figure page Figure page
Mmin Smax 1max 0.85 (R1)
Itot
where Itot Mains voltage Limiting voltage Total current consumption Current requirement (without load) Current requirement other peripheral components
P(R1) Power dissipation
Figure 6-1.
Maximum Resistance
VMains
Itot (mA)
T2117
4768B-INDCO-10/05
T2117
Figure 6-2. Power Dissipation According Current Consumption
VMains
Itot (mA)
Absolute Maximum Ratings
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. This stress rating only functional operation device these other conditions beyond those indicated operational sections this specification implied. Exposure absolute maximum rating conditions extended periods affect device reliability. Parameters Supply current Synchrounous current Output current ramp generator Input voltages Power dissipation Tamb Tamb 100° Junction temperature Operating ambient temperature range Storage temperature range Symbol Isync Ptot Ptot Tamb Tstg Value +125 Unit
Thermal Resistance
Parameters Junction ambient Junction ambient DIP8 Symbol RthJA RthJA Value Unit
4768B-INDCO-10/05
Electrical Characteristics
Tamb reference point unless otherwise specified
Parameters Supply-voltage limitation Supply current Voltage limitation Synchronization current Zero detector Output pulse width Output pulse current Comparator Input offset voltage Input bias current Common-mode input voltage Threshold internal reference ±VI0 -VIC -VRef Rsync Rsync Test Conditions Symbol ±Isync ±Isync 0.12 Min. Typ. Max. 10.0 10.1 Unit
Ramp Generator, Figure page Isync
Period
Final voltage Initial voltage Charge current -VS,
T2117
4768B-INDCO-10/05
T2117
Figure 10-1. Power Blinking Switch with Duty Cycle 1:1, Power Range
T2117
0.47
4768B-INDCO-10/05
Figure 10-2. Power Switch
Load
T2117
Figure 10-3. Temperature Control with Sensor Monitoring
Load 1000
(250
(Rsync)
Ramp generator
Synchronization
Supply
value 3988
R(25)
R5(1) Full-wave logic Comparator Pulse amplifier
Reference voltage
T2117
R(25) 3988 R(15) R(35) 64.5 R5(1) determines proportional range.
T2117
4768B-INDCO-10/05
T2117
Figure 10-4. Room Temperature Control with Definite Reduction (Remote Control) Temperature Range 30°C
0.35
Load
T2117
4768B-INDCO-10/05
Figure 10-5. Two-point Temperature Control Temperature Range
Load/1000
(680
T2117
(200
T2117
4768B-INDCO-10/05
T2117
Figure 10-6. Two-point Temperature Control Temperature Hysteresis ±0.5°
Load/400 Rsync
T2117
Ordering Information
Extended Type Number T2117-3ASY T2117-TASY T2117-TAQY Package DIP8 Remarks Tube, Pb-free Tube, Pb-free Taped reeled, Pb-free
4768B-INDCO-10/05
Package Information
ific
Package
Dimensions
5.00 4.85 1.27 3.81 0.25 0.10
6.15 5.85
technical drawings according specifications
T2117
4768B-INDCO-10/05
T2117
Revision History
Please note that following page numbers referred this section refer specific revision mentioned, this document. Revision 4768B-INDCO-08/05 History datasheet template First page: Pb-free logo added Page Ordering Information changed
4768B-INDCO-10/05
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4768B-INDCO-10/05

Full-wave Power Control Temperature Regulation Power Blinking Switch

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