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TDA8170 TV VERTICAL DEFLECTION OUTPUT CIRCUIT . . . . The functions incorporated are : POWER AMPLIFIER FLYBACK GENERATOR REFERENCE VOLTAGE THERMAL PROTECTION DESCRIPTION The TDA8170 is a monolithic integrated circuit in HEPTAWATTTM package. It is a high efficiency power booster for direct driving of vertical windings of TV yokes. It is intended for use in Colour and B & W television receivers as well as in monitors and displays. PIN CONNECTIONS 7 6 5 4 3 2 1 Ta b connected to Pin 4 REFERENCE VOLTAGE AND NON-INVERTING INPUT OUTPUT STAGE S UPPLY OUTPUT GROUND FLYBACK GENERATOR SUPP LY VOLTAGE INVERTING INPUT HEPTAWATT (Plastic Package) ORDER CODE : TDA8170 BLOCK DIAGRAM + VS 2 6 3 FLYBACK GENERATOR REFERE NCE VOLTAGE 1 P O WER AMPLIFIER 5 7 THERMAL PROTECTION TDA8170 4 YOKE May 1996 1/7 8170-02.EPS 8170-01.EPS TDA8170 SCHEMATIC DIAGRAM 5 2 D4 Q11 C1 Q10 7 Q7 1 Q1 Q2 Q4 D1 R6 Q5 Q3 Q16 R1 D2 Q19 R2 R3 R7 R8 R9 Q14 Q15 Q17 Q22 Q18 R11 Q6 D6 Q8 Q9 D7 Q13 D3 R4 D5 R5 D8 Q20 Q21 3 D9 Q12 R10 6 C2 R12 Q24 Z1 Q25 R13 R14 Q27 Q28 Q29 R15 4 R19 R16 R17 R18 8170-03.EPS Q23 Q26 Z2 2/7 TDA8170 ABSOLUTE MAXIMUM RATINGS Symbol VS V5 , V6 V3 V1 , V7 Io Io Io I3 I3 Ptot Tstg, Tj Supply Voltage (pin 2) Flyback Peak Voltage Voltage at Pin 3 Amplifier Input Voltage Output Peak Current (non repetitive, t = 2 msec) Output Peak Current at f = 50 or 60 Hz, t 10 µsec Output Peak Current at f = 50 or 60 Hz, t > 10 µsec Pin 3 DC Current at V5 < V2 Pin 3 Peak to Peak Flyback Current at f= 50 or 60 Hz, tfly 1.5msec Total Power Dissipation at Tcase = 90 °C Storage and Junction Temperature Parameter Value 35 60 + Vs + Vs ­ 0.5 2.5 3 2 100 3 20 ­ 40 to 150 V A A A mA W °C 8170-01.TBL Unit V V A THERMAL DATA Symbol R th j­case Parameter Thermal Resistance Junction-case Max. Value 3 Unit °C/W 8170-02.TBL 8170-03.TBL ELECTRICAL CHARACTERISTICS (refer to the test circuits, VS = 35V, Tamb = 25oC unless otherwise specified) Symbol I2 I6 I1 V7 V7 VS V3L V5 V5L V5H Tj Parameter Pin 2 Quiescent Current Pin 6 Quiescent Current Amplifier Input Bias Current Reference Voltage Reference Voltage Drift versus Supply Voltage Pin 3 Saturation Voltage to GND Quiescent Output Voltage Output Saturation Voltage to GND Output Saturation Voltage to Supply Junction Temperature for Thermal Shut Down Vs = 15 to 30 V I3 = 20 mA Vs = 35 V , Ra = 39 k Vs = 15 V , Ra = 13 k I5 = 1.2 A I5 = 0.7 A ­ I5 = 1.2 A ­ I5 = 0.7 A Test Conditions I3 = 0, I5 = 0 I3 = 0, I5 = 0 V1 = 1 V Min. Typ. Max. 8 16 ­ 0.1 2.2 1 1 18 7.5 1 0.7 1.6 1.3 140 1.4 1 2.2 1.8 2 16 36 ­1 Unit mA mA µA V mV/V V V V V V V V °C Fig. 1a 1a 1a 1a 1a 1c 1d 1d 1c 1c 1b 1b 3/7 TDA8170 Figure 1a : Measurement of I1, I2, I6, V7, V7/VS VS I2 2 6 5 10k S1 1 7 V7 4 b I1 8170-04.EPS Figure 1b : Measurement of V5H I6 VS 2 6 V 5H 1 1V 4 I5 8170-05.EPS 5 a 1V S1 : (a) I2 and I6 ; (b) I1 Figure 1c : Measurement of V3L, V5L VS I 3 or I 5 2 6 3 b 1 3V 5 4 V 3L V5L 8170-06.EPS Figure 1d : Measurement of V5 VS 2 6 S1 12k