T2117

Features • • • • • • • • Direct Supply from the Mains Current Consumption ≤0.5 mA Very Few External Components Full-wave Drive – No DC Current Component in the Load Circuit Negative Output Current Pulse Typically 100 mA – Short-circuit Protected Simple Power Control Ramp Generator Reference Voltage Applications • Full-wave Power Control • Temperature Regulation • Power Blinking Switch Zero-voltage Switch with Adjustable Ramp T2117 1. Description The integrated circuit, T2117, is designed as a zero-voltage switch in bipolar technology. It is used to control resistive loads at mains by a triac in zero-crossing mode. A ramp generator allows power control function by period group control, whereas full-wave logic guarantees that full mains cycles are used for load switching. Rev. 4768B–INDCO–10/05 Figure 1-1. Block Diagram with Typical Circuit, Period Group Control 0 to 100% D1 220 kΩ (250 V~) R2 (Rsync) R1 18 kΩ/ 2W -VS C2 2.2 µF/ 10 V R5 12 kΩ max 100 kΩ min R6 18 kΩ N 3 4 + + 6 Full-wave logic Comparator Reference voltage 1.4 V Pulse amplifier R3 R4 100 kΩ 1 2 Ramp generator 8 5 7 Synchronization Supply GND 100 Ω C1 100 µF/ 16 V VM = 230 V~ MT2 MT1 Load 1000 W L T2117 2. Pin Configuration Figure 2-1. Pinning DIP8/SO8 RAMP CRAMP 1 8 VSYNC 2 T2117 7 GND OUTPUT POSIN 3 6 NEGIN 4 5 VS Table 2-1. Pin 1 2 3 4 5 6 7 8 Pin Description Symbol RAMP CRAMP POSIN NEGIN VS OUTPUT GND VSYNC Function Ramp output Ramp capacitor Non-inverting comparator input Inverting comparator input Supply voltage Trigger pulse output Ground Voltage synchronization 2 T2117 4768B–INDCO–10/05 T2117 3. General Description The integrated circuit T2117 is a triac controller for zero-crossing mode. It is designed to control power in switching resistive loads of mains supplies. Information regarding synchronous supply is provided at pin 8 via resistor RSync. To avoid a DC load on the mains, the full-wave logic guarantees that complete mains cycles are used for load switching. A fire pulse is released when the inverting input of the comparator is negative (pin 4) with respect to the non-inverting input (pin 3) and internal reference voltage. A ramp generator with freely selectable duration can be performed by capacitor C2 at pin 2. The ramp function is used for open-loop control (Figure 3-2), but also for applications with proportional band regulation (Figure 10-3 on page 10). Ramp voltage available at capacitor C2 is decoupled across the emitter follower at pin 1. To maintain the lamp flicker specification, the ramp duration is adjusted according to the controlling load. One can use internal reference voltage for simple applications. In that case, pin 3 is inactive and connected to pin 7 (GND), see Figure 10-5 on page 12. Figure 3-1. Pin 1 Internal Network T2117 1 R4 -VS Ramp control 2 C2 Figure 3-2. Threshold Voltage of the Ramp at VS = -8.8 V t V1 -1.6 V Final voltage Vmin Initial voltage Vmax -7.6 V T 3 4768B–INDCO–10/05 4. Triac Firing Current (Pulse) This depends on the triac requirement. It can be limited by the gate series resistance which is calculated as follows: 7.5 V – V Gmax R Gmax ≈ ----------------------------------- – 36 Ω I Gmax I Gmax I P = ------------- × t p T where: VG = Gate voltage IGmax = Maximum gate current Ip tp T = Average gate current = Firing pulse width = Mains period duration 5. Firing Pulse Width tp This depends on the latching current of the triac and its load current. The firing pulse width is determined by the zero-crossing detection which can be influenced by the synchronous resistance, Rsync, (see Figure 5-2 on page 5). IL × VM 2 t p = -- arc. sin ⎛ -------------------⎞ ⎝P2⎠ ω where IL VM P = Latching current of the triac = Mains supply, effective = Load power The total current consumption is influenced by the firing pulse width which can be calculated as follows: tp V M 2 sin ⎛ ω × --- ⎞ – 0.6 V ⎝ 2⎠ = ----------------------------------------------------------------- – 49 k Ω -5 3.5 × 10 A R sync 4 T2117 4768B–INDCO–10/05 T2117 Figure 5-1. Output Pulse Width 10.00 VMains = 230 V ~ tp (ms) 1.00 0.10 IL (mA) 200 100 0.01 10 100 50 P (W) 1000 10000 Figure 5-2. Synchronization Resistance 2000 VMains = 230 V ~ 1600 Rsync (kΩ) 1200 800 400 0 0 200 400 600 800 1000 1200 1400 tp (µs) 5 4768B–INDCO–10/05 6. Supply Voltage The T2117 contains a voltage limiting funtion and can be connected with the mains supply via the diode D1 and the resistor R1. The supply voltage between pin 5 and 7 is limited to a typical value of 9.5 V. The series resistance R1 can be calculated as follows (Figure 6-1 on page 6 and Figure 6-2 on page 7): 2 V Mmin – V Smax ( VM – VS ) R 1max = 0.85 ------------------------------------- ; P (R1) = ---------------------------2 I tot 2 R1 Itot = IS + IP + Ix where VM VS Itot IS Ix = Mains voltage = Limiting voltage of the IC = Total current consumption = Current requirement of the IC (without load) = Current requirement of other peripheral components P(R1) = Power dissipation at R1 Figure 6-1. Maximum Resistance of R1 50 40 R1 (kΩ) VMains = 230 V~ 30 20 10 0 0 3 6 9 Itot (mA) 12 15 6 T2117 4768B–INDCO–10/05 T2117 Figure 6-2. Power Dissipation of R1 According to Current Consumption 6 5 4 PR1 (W) VMains = 230 V ~ 3 2 1 0 0 3 6 9 Itot (mA) 12 15 7. 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 current Synchrounous current Output current ramp generator Input voltages Power dissipation Tamb = 45° C Tamb = 100° C Junction temperature Operating ambient temperature range Storage temperature range Pin 5 8 1 1, 3, 4, 6 2 8 Symbol -IS Isync IO -VI -VI ±VI Ptot Ptot Tj Tamb Tstg Value 30 5 3 ≤S V 2 to VS ≤ 7.3 400 125 125 0 to 100 -40 to +125 Unit mA mA mA V V V mW mW °C °C °C 8. Thermal Resistance Parameters Junction ambient SO8 Junction ambient DIP8 Symbol RthJA RthJA Value 200 110 Unit K/W K/W 7 4768B–INDCO–10/05 9. Electrical Characteristics -VS = 8.8 V, Tamb = 25° C, reference point pin 7, 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 V3 = 0 V 3, 4 4 3, 4 4 ±VI0 IIB -VIC -VRef 1 1.4 15 1 (VS - 1) mV µA V V VM= 230 V ~ Rsync = 220 kΩ Rsync = 470 kΩ V6 = 0 V I8 = ±1 mA Test Conditions -IS = 1 mA -IS = 10 mA Pin 5 5 8 8 8 6 6 6 Symbol -VS -VS -IS ±VI ±Isync ±Isync tP tP -IO 100 7.7 0.12 35 260 460 8.2 Min. 9.0 9.1 Typ. 9.5 9.6 Max. 10.0 10.1 500 8.7 Unit V V µA V mA µA µs µs mA Ramp Generator, Figure 1-1 on page 2 -IS = 1 mA Isync = 1 mA C1 = 100 µF C2 = 2.2 µF R4 = 100 kΩ Period 1 T 1.5 s Final voltage Initial voltage Charge current V2 = -VS, I8 = -1 mA 1 1 2 -V1 -V1 -I2 1.2 7.2 14 1.6 7.6 20 2.0 8.0 26 V V µA 8 T2117 4768B–INDCO–10/05 T2117 10. Applications Figure 10-1. Power Blinking Switch with f ≈ 2.7 Hz, Duty Cycle 1:1, Power Range 0.5 to 2.2 kW L 0.5 ... 2.2 kW 100 nF/ 250 V ~ 270 kΩ VM = 230 V ~ 18 kΩ/ 1.5 W 56 Ω N 82 Ω 8 7 6 5 T2117 1 150 kΩ 2 3 4 110 kΩ 0.47 µF/ 10 V 47 µF/ 16V 9 4768B–INDCO–10/05 Figure 10-2. Power Switch L RL Load VM = 230 V ~ 56 Ω N VDR +5 V 8 7 6 5 18 kΩ 1.5 W 270 kΩ T2117 1 2 3 4 56 kΩ 47 µF/ 10 V 39 kΩ II ≥ 1.5 mA VI Figure 10-3. Temperature Control 15° C to 35° C with Sensor Monitoring L 18 kΩ/ 2W Load 1000 W 2.2 µF/ 10 V C2 D1 220 kΩ (250 V~) R2 (Rsync) R1 R8 470 kΩ R4 100 kΩ 2 1 Ramp generator 8 Synchronization 5 7 Supply C1 VM = 230 V~ NTC B value = 3988 100 kΩ R(25) R6 100 kΩ R5(1) 3 4 + + 6 Full-wave logic Comparator Pulse amplifier R3 100 Ω R9 150 Ω Rp 220 kΩ R7 130 kΩ Reference voltage 1.4 V T2117 N R(25) = 100 kΩ/B = 3988 --> R(15) = 159 kΩ, R(35) = 64.5 kΩ, R5(1) determines the proportional range. 10 T2117 4768B–INDCO–10/05 T2117 Figure 10-4. Room Temperature Control with Definite Reduction (Remote Control) for a Temperature Range of 5 to 30°C L 0.35 ... 1.5 kW R1 510 kΩ R5 R2 R3 IH = 50 mA N R16 220 kΩ 62 Ω 680 kΩ 13 kΩ/2 W -∆T R4 680 kΩ Load VM = 230 V ~ 8 7 6 5 T2117 R6 9.1 kΩ R7 1 R10 910 kΩ R9 12 kΩ C5 100 µF/ C4 12 V 47 µF 2 3 C3 4 12 kΩ R15 25 kΩ 10 nF NTC 33 kΩ R8 56 kΩ C2 1 µF C1 2.2 µF 11 4768B–INDCO–10/05 Figure 10-5. Two-point Temperature Control for a Temperature Range of 15° C to 30° C L 220 kΩ Load/1000 W VM = 230 V ~ 18 kΩ/ 1.5 W VDR N 56 Ω 8 7 6 5 220 kΩ (680 kΩ) T2117 1 2 3 4 500 kΩ (2 MΩ) 10 nF 68 µF/ 10 V 50 kΩ (200 kΩ) NTC 12 T2117 4768B–INDCO–10/05 T2117 Figure 10-6. Two-point Temperature Control for a Temperature of 18° C to 32° C and a Hysteresis of ±0.5° C at 25° C L D1 Load/400 Ω VM = 230 V~ R1 92 Ω N R3 8 7 6 5 NTC 18 kΩ/ 1.5 W Rsync 430 kΩ 200 kΩ T2117 D2 1 2 3 4 R6 27 kΩ 330 kΩ R5 R7 8.2 kΩ C2 150 nF R15 50 kΩ R4 39 kΩ C3 33 µF/ 10 V C1 ≥ 68 µF/ 10 V 11. Ordering Information Extended Type Number T2117-3ASY T2117-TASY T2117-TAQY Package DIP8 SO8 SO8 Remarks Tube, Pb-free Tube, Pb-free Taped and reeled, Pb-free 13 4768B–INDCO–10/05 12. 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 Package SO8 Dimensions in mm 5.00 4.85 1.4 0.4 1.27 3.81 8 5 0.25 0.10 5.2 4.8 3.7 0.2 3.8 6.15 5.85 technical drawings according to DIN specifications 1 4 14 T2117 4768B–INDCO–10/05 T2117 13. 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. 4768B-INDCO-08/05 History • Put datasheet in a new template • First page: Pb-free logo added • Page 13: Ordering Information changed 15 4768B–INDCO–10/05 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel: (49) 71-31-67-0 Fax: (49) 71-31-67-2340 1150 East Cheyenne Mtn. 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