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 Zero-voltage • Reference Voltage with Applications Adjustable • Full-wave Power Control • Temperature Regulation Ramp • Power Blinking Switch

1. Description T2117 The , T2117, is designed as a zero-voltage switch in bipolar technol- ogy. 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%

L D1

R Ω 220 kΩ 2 18 k / Load R1 (250 V~) 2 W 1000 W (Rsync)

-VS

C2 R4 2 8 5 C1 Ω 100 k 100 µF/ 2.2 µF/ 1 V = 230 V~ Ramp 7 16 V M 10 V Synchronization Supply generator GND MT2 R5 12 kΩ 3 Ω + 6 100 MT1 max 4 + Full-wave logic - Pulse R Comparator 3 100 kΩ

min Reference voltage 1.4 V R6 T2117 18 kΩ N

2. Pin Configuration

Figure 2-1. Pinning DIP8/SO8

RAMP 1 8 VSYNC

CRAMP 2 7 GND T2117

POSIN 3 6 OUTPUT

NEGIN 4 5 VS

Table 2-1. Pin Description Pin Symbol Function 1 RAMP Ramp output 2 CRAMP Ramp 3 POSIN Non-inverting comparator input 4 NEGIN Inverting comparator input 5 VS Supply voltage 6 OUTPUT Trigger pulse output 7 GND Ground 8 VSYNC 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 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 emit- ter 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

Ramp 1 control

R 4 2 C2 -VS

Figure 3-2. Threshold Voltage of the Ramp at VS = -8.8 V

t

V1 -1.6 V Final voltage Vmin

-7.6 V Initial voltage T Vmax

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 Ω RGmax ------– 36 IGmax

I I = ------Gmax- × t P T p

where:

VG = Gate voltage

IGmax = Maximum gate current

Ip = Average gate current

tp = Firing pulse width T = 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 resis-

tance, Rsync, (see Figure 5-2 on page 5).

× 2 ⎛⎞IL VM tp = --- arc. sin⎝⎠------ω P2

where

IL = Latching current of the triac

VM = Mains supply, effective P = Load power The total current consumption is influenced by the firing pulse width which can be calculated as follows:

⎛⎞tp V 2 sin ω× ---- – 0.6 V M ⎝⎠2 R = ------– 49 kΩ sync -5 3.5× 10 A

4 T2117 4768B–INDCO–10/05 T2117

Figure 5-1. Output Pulse Width

10.00

VMains = 230 V ~

1.00 (ms) p t

0.10 IL (mA)

200 100 50 0.01 10 100 1000 10000 P (W)

Figure 5-2. Synchronization Resistance

2000

VMains = 230 V ~

1600 ) Ω 1200 (k sync

R 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 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 VMmin – VSmax VM – VS R1max = 0.85------; P(R1) = ------2 Itot 2 R1

Itot = IS + IP + Ix

where

VM = Mains voltage

VS = Limiting voltage of the IC

Itot = Total current consumption

IS = Current requirement of the IC (without load)

Ix = Current requirement of other peripheral components

P(R1) = Power dissipation at R1

Figure 6-1. Maximum Resistance of R1

50

40 VMains = 230 V~ )

Ω 30

k

(

1 R

20

10

0 03 6 9 1215

Itot (mA)

6 T2117 4768B–INDCO–10/05 T2117

Figure 6-2. Power Dissipation of R1 According to Current Consumption

6

V = 230 V ~ 5 Mains

4

)

W

(

1

R 3 P

2

1

0 03 6 9 1215

Itot (mA)

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 Pin Symbol Value Unit

Supply current 5 -IS 30 mA

Synchrounous current 8 Isync 5mA

Output current ramp generator 1 IO 3mA ≤ 1, 3, 4, 6 -VI VS V Input voltages 2 -VI 2 to VS V ≤ 8 ±VI 7.3 V Power dissipation ° Tamb = 45 C Ptot 400 mW ° Tamb = 100 C Ptot 125 mW ° Junction temperature Tj 125 C Operating ambient T 0 to 100 ° C temperature range amb ° Storage temperature range Tstg -40 to +125 C

8. Thermal Resistance Parameters Symbol Value Unit

Junction ambient SO8 RthJA 200 K/W

Junction ambient DIP8 RthJA 110 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 Test Conditions Pin Symbol Min. Typ. Max. Unit Supply-voltage -I = 1 mA -V 9.0 9.5 10.0 V S 5 S limitation -IS = 10 mA -VS 9.1 9.6 10.1 V

Supply current 5 -IS 500 µA

Voltage limitation I8 = ±1 mA 8 ±VI 7.7 8.2 8.7 V Synchronization 8±I 0.12 mA current sync

Zero detector 8 ±Isync 35 µA

VM= 230 V ~ Ω Output pulse width Rsync = 220 k 6 tP 260 µs Ω Rsync = 470 k 6 tP 460 µs

Output pulse current V6 = 0 V 6 -IO 100 mA Comparator

Input offset voltage 3, 4 ±VI0 15 mV

Input bias current 4 IIB 1µA Common-mode input 3, 4 -V 1(V - 1) V voltage IC S Threshold internal V = 0 V 4 -V 1.4 V reference 3 Ref Ramp Generator, Figure 1-1 on page 2

-IS = 1 mA

Isync = 1 mA Period C1 = 100 µF 1T 1.5 s

C2 = 2.2 µF Ω R4 = 100 k

Final voltage 1 -V1 1.2 1.6 2.0 V

Initial voltage 1 -V1 7.2 7.6 8.0 V

Charge current V2 = -VS, I8 = -1 mA 2 -I2 14 20 26 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 270 kΩ

100 nF/ V = 230 V ~ 250 V ~ M 18 kΩ/ 1.5 W

56 Ω 82 Ω N

8 7 65

T2117

1234

150 kΩ 110 kΩ

47 µF/ 16V 0.47 µF/ 10 V

9 4768B–INDCO–10/05 Figure 10-2. Power Switch

L R L Ω Load 270 k

VM = 230 V ~ 18 kΩ 56 Ω 1.5 W N VDR

+5 V 8 7 65

T2117

1234 56 kΩ

47 µF/ I ≥ 1.5 mA 10 V 39 kΩ I VI

Figure 10-3. Temperature Control 15° C to 35° C with Sensor Monitoring

L D1 2.2 µF/ C2 R 10 V 220 kΩ 2 18 kΩ/ Load R1 (250 V~) (Rsync) 2 W 1000 W

R8 R 470 kΩ 4 Ω 2 8 5 100 k C1 1 V = 230 V~ Ramp 7 M Synchronization Supply generator R NTC R 6 (25) R (1) B value = 3988 100 kΩ 100 kΩ 5 3 + 6 100 Ω 4 + Full-wave logic R - Pulse 9 Comparator R3 150 Ω amplifier Reference voltage 1.4 V Rp R7 T2117 220 kΩ 130 kΩ N

Ω Ω Ω (1) R(25) = 100 k /B = 3988 --> R(15) = 159 k , R(35) = 64.5 k , R5 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 -∆T

R 0.35 ... 1 R Load 4 1.5 kW 510 kΩ 680 kΩ

R5 VM = 230 V ~

680 kΩ R2 R3 13 kΩ/2 W

IH = 50 mA 62 Ω N

R16 8 7 65

220 kΩ

R6 T2117 9.1 kΩ

R7

1234 12 kΩ

R 10 R15 C3 910 kΩ 25 kΩ

10 nF R9 C1 NTC 2.2 µF 12 kΩ 33 kΩ

C R8 5 100 µF/ C4 C2 Ω 12 V 47 µF 56 k 1 µF

11 4768B–INDCO–10/05 Figure 10-5. Two-point Temperature Control for a Temperature Range of 15° C to 30° C

L

Load/1000 W 220 kΩ

VM = 230 V ~ 18 kΩ/ 1.5 W VDR 56 Ω N

8 7 65

220 kΩ (680 kΩ) T2117

500 kΩ 1234 (2 MΩ)

Ω 10 nF 50 k (200 kΩ) 68 µF/ NTC 10 V

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

Rsync Load/400 Ω 430 kΩ

VM = 230 V~ 18 kΩ/ R1 1.5 W

92 Ω

N R3

8 7 65

NTC 200 kΩ T2117

D2

1234

R6

R15 27 kΩ 50 kΩ

330 kΩ R4 39 kΩ R5

R7 C2 8.2 kΩ 150 nF C 3 C1 33 µF/ ≥ 68 µF/ 10 V 10 V

11. Ordering Information Extended Type Number Package Remarks T2117-3ASY DIP8 Tube, Pb-free T2117-TASY SO8 Tube, Pb-free T2117-TAQY SO8 Taped and reeled, Pb-free

13 4768B–INDCO–10/05 12. Package Information

Package DIP8 Dimensions in mm 9.8 7.77 9.5 7.47 1.64 1.44

4.8 max

6.4 max 0.5 min 3.3 0.36 max 0.58 9.8 0.48 2.54 8.2 7.62

85

technical drawings according to DIN specifications

14

Package SO8 5.2 4.8 Dimensions in mm 5.00 4.85 3.7

1.4 0.2 0.4 0.25 0.10 3.8 1.27 6.15 3.81 5.85

85

technical drawings according to DIN specifications

14

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. History • Put datasheet in a new template 4768B-INDCO-08/05 • First page: Pb-free logo added • Page 13: Ordering Information changed

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