NTE7147 Integrated Circuit Full Bridge Current Driven Vertical Deflection Booster Description: The NTE7147 is a power amplifier in a 9–Lead SIP type package designed for use in 90 degree color vertical deflection systems for frame frequencies of 50Hz to 160Hz. This device provides a high CMRR current driven differential input. Due to the bridge configuration of the two output stages, DC– coupling of the deflection coil is achieved. Features: D Pre–Amplifier with Differential High CMRR Current Mode Inputs D Low Offsets D High Linear Sawtooth Signal Amplification D High Efficient DC–Coupled Vertical Output Bridge Circuit D Powerless Vertical Shift D High Deflection Frequency up to 160Hz D Power Supply and Flyback Supply Voltage Independent Adjustable to Optimize Power Consumption and Flyback Time D Excellent Transition Behaviour Duriing Flyback D Guard Circuit for Screen Protection Absolute Maximum Ratings: (Voltage referenced to Pin5 (GND) unless otherwise specified) Supply Voltage (Pin3), VP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V Flyback Supply Voltage (Pin7), VFB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V Flyback Supply Current, IFB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1.8A Input Voltage, V1, V2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VP V Input Current, I1, I2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to ±5mA Output Voltage, V4, V6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VP V Output Current (Note 1), I4, I6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to ±1.8A Feedback Voltage, V9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VP V Feedback Current, I9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to ±5mA Guard Voltage (Note 2), V8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VP+0.4V Guard Current, I8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to ±5mA Operating Junction Temperature Range (Note 3), TJ . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +150°C Ambient Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +150°C Thermal Resistance, Junction–to–Mounting Base, RthJ–MB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4K/W Electrostatic Handling Voltage (Note 4), Ves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –500V to +500V Note Note Note Note 1. 2. 3. 4. Maximum output currents I4 and I6 are limited by current protection. For VP > 13V, the guard voltage V8 is limited to 13V. Internally limited by thermal protection; switching point ≥ +150°C. Equivalent to discharging a 200pF capacitor through a 0Ω series resistor, Electrical Characteristics: (VP = 15V, TA = +25°C, VFB = 40V, voltage referenced to Pin5 (GND) unless otherwise specified) Parameter Symbol Test Conditions Supply Voltage (Pin3) VP Flyback Supply Voltage (Pin7) VFB Note 5 Quiescent Feedback Current (Pin7) IFB No Load, No Signal Min Typ Max Unit 8.2 – 25 V VP+6 – 60 V – 7 10 mA – ±500 ±600 µA Input Stage Differential Input Current (Iid = I1 – I2) (Peak–to–Peak Value) Iid(p–p) Single Ended Input Current (Peak–to–Peak Value) I1,2(p–p) Note 6 0 ±300 ±600 µA Common Mode Rejection Ratio CMRR Note 7 – –54 – dB Input Clamp Voltage V1 I1 = 300µA 2.7 3.0 3.3 V V2 I2 = 300µA 2.7 3.0 3.3 V Input Clamp Signal TC on Pin1 TCi,1 0 – ±800 µV/K Input Clamp Signal TC on Pin2 TCi,2 0 – ±800 µV/K 0 – ±10 mV Differential Input Voltage V1 – V2 Iid = 0 Feedback Current I9 – ±500 ±600 µA Feedback Voltage V9 1 – VP–1 V 0 – ±20 µA Differential Input Offset Current (Iid(offset) = I1 – I2) Iid(offset) Idefl = 0, Rref = 1.5kΩ, Rm = 1Ω Input Capacity Pin1 Reference to GND Ci INA – – 5 pF Input Capacity Pin2 Reference to GND Ci INB – – 5 pF I4, I6 – – ±1 A I6 = 0.7A – 1.3 1.5 V I6 = 1.0A – 1.6 1.8 V I6 = 0.7A – 2.3 2.9 V I6 = 1.0A – 2.7 3.3 V I4 = 0.7A – 1.3 1.5 V I4 = 1.0A – 1.6 1.8 V I4 = 0.7A – 1.0 1.6 V I4 = 1.0A – 1.3 1.9 V Idefl = ±0.7A, Note 8 – – 2 % Output Stages A and B Output Current Output A Saturation Voltage to GND Output A Saturation Voltage to VP Output B Saturation Voltage to GND Output B Saturation Voltage to VP Linearity Error V6 V6,3 V4 V4,3 LE Note 5. Up to 60V ≥ VFB ≥ 40V a decoupling capacitor CFB = 22µ(between Pin7 and Pin5) and a resistor RFB = 100Ω (between Pin7 and VFB) are required. Note 6. Saturation voltages of output stages A and B can be increased in the event of negative input currents I1,2 < –500µA. Ideflc I x id with Ideflc = common mode deflection current and Iidc = common mode Iidc Idefl input current. Note 7. Di = Note 8. Deviation of the output slope at a constant input slope. Electrical Characteristics (Cont’d): (VP = 15V, TA = +25°C, VFB = 40V, voltage referenced to Pin5 (GND) unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Output Stages A and B (Cont’d) DC Output Voltage V4, V6 Iid = 0A, Closed–Loop 6.6 7.2 7.8 V Open–Loop Current Gain (I4, 6/Iid) Goi I4, 6 < 100mA, Note 9 – 100 – dB Open–Loop Current Gain (I4, 6/I9) Gofb I4, 6 < 100mA, Note 9 – 100 – dB Current Ratio (Iid/I9) Gifb Closed–Loop – –0.2 – dB Idefl(ripple) VP(ripple) = ±0.5V, Iid = 0, Closed–Loop – ±1 – mA Idefl = 0.7A – –2.0 –3.0 V defl = 1.0A – –2.3 –3.5 V defl = 0.7A – +5.6 +6.1 V defl = 1.0A – +5.9 +6.5 V Output Ripple Current as a Function of Supply Ripple Flyback Generator Voltage Drop During Flyback Reverse V7, 6 Forward Switching On Threshold Voltage V6 VP–1 – VP+1.5 V Switching Off Threshold Voltagte V6 Vp–1.5 – VP+1 V Flyback Current During Flyback I7 – – ±1 A Guard On 7.5 8.5 10 V Guard On, VP = 8.2V 6.9 – VP–0.4 V Guard Off – – 0.4 V Guard On 5 – – mA 0.5 1.0 1.5 mA 0 – 13 V 0 – VP+0.3 V Guard Circuit Output Voltage Output Current V8 I8 Guard Off, V8 = 5V Allowable External Voltage on Pin8 V8(ext.) VP ≤ 13V Note 9. Frequency behaviour of Goi and Gofb. a) –3dB open–loop bandwidth (–45°) at 15kHz; second pole (–135°) at 1.3MHz. b) Open–loop gain at second pole (–135°) 55dB. Pin Connection Diagram (Front View) 9 8 7 6 5 4 3 2 1 Feedback Input Guard Output Flyback Supply Voltage Output A GND Output B VP Input B Input A .945 (24.0) Max .788 (20.0) Max .173 (4.4) Seating Plane .130 (3.25) R .472 (12.0) 1 9 .079 (2.0) .100 (2.54) .663 (16.85) .017 (0.43)