TN22_05 STMICROELECTRONICS | Alldatasheet

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Table 1: Absolute ratings (limiting values) Symbol Parameter Value Unit VRRM Repetitive peak off-state voltage Tj = 110°C 400 V IT(RMS) RMS on-state current Full sine ware (180° conduction angle) Tc = 95°C 2 A IT(AV) Mean on-state current Full sinewave (180° conduction angle) Tc = 95°C 1.8 A ITSM Non repetitive surge peak on-state current (Tj initial = 25°C) tp = 8.3ms 22 Atp = 10ms 20 I t I2t Value for fusing tp = 10ms 2 A 2s dl/dt Critical rate of rise of on-state current IG =5mA dIG /dt = 70 mA/µs. 50 A/µs Tstg Tj Storage and operating junction temperature range -40 to +150 -40 to +110 °C TI Maximum lead temperature for soldering during 10s at 4.5mm from case 260 °C TAB DPAK (TN22-B) TAB IPAK (TN22-H) TAB TO-22AB (TN22-T) 2, TAB 1 September 2005 REV. 2 FEATURES AND BENEFITS ■ High clamping voltage structure (1200 -1500V) ■ Low gate triggering current for direct drive from line (< 1.5mA) ■ High holding current (> 175mA), ensuring high striking energy.

DESCRIPTION

The TN22 has been specifically developed for use in electronic starter circuits. Use in conjunction with a sensitive SCR and a resistor, it provides high energy striking characteristics with low trig- gering power. Thanks to its electronic concept, this TN22 based starter offers high reliability levels and extended life time of the fluorescent tubelamps.

2/9 ® Table 2: Thermal resistance GATE CHARACTERISTICS (maximum values) PG (AV) = 300 mW PGM = 2W(tp = 20 µs) IFGM=1 A (tp = 20 µs) VRGM = 6V Table 3: Static electrical characteristics (per diode) Symbol Parameter Value Unit Rth(j-a) Junction to AMBIENT DPAK / IPAK 100 °C/W TO-220AB 60 Rth(j-c) Junction to case 3 °C/W Symbol Test conditions Type Value Unit IGT VD=12V (DC) RL= 33Ω Tj = 25°C MAX 1.5 mA VGT VD=12V (DC) RL= 33Ω RGK = 1 KΩ Tj = 25°C MAX 3 V IH VGK = 0V T j = 25°C MIN 175 mA VTM ITM = 2A tp = 380µs T j = 25°C MAX 3.1 V IDRM VDRM Rated T j = 25°C MAX 0.1 mA dV/dt Linear slope up to VD=67%VDRM VGK = 0V Tj = 110°C MIN 500 V/µs Symbol Test conditions Type Value Unit TN22-1500 VBR ID = 5mA VGK = 0V Tj = 25°C MIN 1200 V MAX 1500 V

3/9® This thyristor has been designed for use as a fluo- rescent tube starter switch. An electronic starter circuit provides : ■ A pre-heating period during which a heating cur- rent is applied to the cathode heaters. ■ One or several high voltage striking pulses across the lamp. Figure 1: Basic application diagram 1/ Pre-heating At rest the switch S is opened and when the mains voltage is applied across the circuit a full wave rec- tified current flows through the resistor R and the TN22 gate : at every half-cycle when this current reaches the gate triggering current (I GT) the thyris tor turns on. When the device is turned on the heating current, limited by the ballast choke, flows through the tube heaters. The pre-heating time is typically 2 or 3 seconds. 2/ Pulsing At the end of the pre-heating phase the switch S is turned on. At this moment : If the current through the devices is higher than the holding current (I H) the thyristor remains on until the current falls below IH. Then the thyristor turns off. If the current is equal or lower than the holding cur- rent the thyristor turns off instantaneously. When the thyristor turns off the current flowing through the ballast choke generates a high voltage pulse. This overvoltage is clamped by the thyristor avalanche characteristic (V BR). If the lamp is not struck after the first pulse, the system starts a new ignition sequence again. 3/ Steady state When the lamp is on the running voltage is about 150V and the starter switch is in the off-state. IMPLEMENTATION The resistor R must be chosen to ensure a proper triggering in the worst case (minimum operating temperature) according to the specified gate trig- gering current and the peak line voltage. Switch S : This function can be realized with a gate sensitive SCR type : P0130AA 1EA3 This component is a low voltage device (< 50V) and the maximum current sunk through this switch can reach the level of the thyristor holding current. The pre-heating period can be determined by the time constant of a capacitor-resistor circuit charged by the voltage drop of diodes used in se- ries in the thyristor cathode. TN22 R S STARTER CIRCUIT CONTROLLER (TIMER) INDUCTANCE BALLAST FLUORESCENT TUBE AC VOLTAGE

7/9® Figure 15: TO-220 Package mechanical data A C D Dia F G E M REF. DIMENSIONS Millimeters Inches Min. Max. Min. Max. A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107 E 0.49 0.70 0.019 0.027 F 0.61 0.88 0.024 0.034 F1 1.14 1.71 0.044 0.066 F2 1.14 1.70 0.044 0.066 G 4.95 5.15 0.194 0.202 G1 2.40 2.70 0.094 0.106 H2 10 10.40 0.393 0.409 L2 16.4 Typ. 0.645 Typ. L4 13 14 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.25 15.75 0.600 0.620 L7 6.20 6.60 0.244 0.259 L9 3.50 3.93 0.137 0.154 M 2.6 Typ. 0.102 Typ. Diam 3.75 3.85 0.147 0.151

8/9 ® Figure 16: IPAK Package mechanical data H L L1 G e B5 B D C A E Table 4: Ordering information Type Marking Package Weight Base Qty Delivery mode TN22-1500B TN22-1500 DPAK 0.3 g 75 Tube TN22-1500B-TR TN22-1500 DPAK 0.3 g 2500 Tape & Reel TN22-1500H TN22-1500 IPAK 0.4 g 75 Tube TN22-1500T TN22-1500 TO-220AB 2.0 g 50 Tube Table 5: Revision History Date Revision Description of Changes Oct-2000 1 First issue. 17-Sep-2005 2 TO-220AB package added. REF. DIMENSIONS Millimeters Inches A 2.20 2.40 0.086 0.094 A1 0.90 1.10 0.035 0.043 A3 0.70 1.30 0.027 0.051 B 0.64 0.90 0.025 0.035 B2 5.20 5.40 0.204 0.212 B3 0.95 0.037 B5 0.30 0.035 C 0.45 0.60 0.017 0.023 C2 0.48 0.60 0.019 0.023 D 6 6.20 0.236 0.244 E 6.40 6.60 0.252 0.260 e 2.28 0.090 G 4.40 4.60 0.173 0.181 H 16.10 0.634 L 9 9.40 0.354 0.370 L1 0.8 1.20 0.031 0.047 L2 0.80 1 0.031 0.039 V1 10° 10°

9/9® Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publicati on are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectro nics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners © 2005 STMicroelectronics - All rights reserved STMicroelectronics GROUP OF COMPANIES Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Ital y - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States