an3861sa Panasonic Corporation of North America, an3861sa Datasheet
an3861sa
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an3861sa Summary of contents
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... AN3861SA Sensor-less Motor Drive IC for VTR Movie Cylinder Overview The AN3861SA is a sensor-less motor drive IC for VTR movie cylinder. It uses both sensor-less and sine wave drive, thus excellent for low-noise applications. Features • Operating supply voltage range : V 10.5V • Reduced magnetosound using 3-phase full-wave overlap drive. Built-in power transistor. • ...
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Block Diagram SW Power Block Vbatt ref OUT 1 23 – – OUT 2 19 – STB Reference 16 (Low : Stand-by) ...
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Absolute Maximum Rating (Ta=25˚C) Parameter Supply voltage Unregulated voltage Motor power supply voltage (under V B Output terminal voltage n=1, 29, 31 Output current n=1, 29, 31 Note 1) Power dissipation Operating ambient temperature Storage temperature Note 1) Package power ...
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Electrical Characteristics (cont.) (V Parameter Oscillator Triangular wave oscillation frequency Slope Slope terminal charging current (1) Slope terminal discharging current (1) Slope terminal charging current (2) Slope terminal discharging current (2) Slope terminal charging current (3) Slope terminal discharging current ...
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Pin Descriptions Pin No. Pin name Standard waveform U-phase drive output Drive power supply output VSC : 3 Switching power supply control output WIN : 4 W-phase detection VIN : 5 V-phase detection UIN ...
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Pin Descriptions (cont.) Pin No. Pin name Standard waveform SL3 : 9 Slope waveform generation (3) SL2 : 10 Slope waveform generation (2) SL1 : 11 Slope waveform generation ( Oscillation Short ...
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Pin Descriptions (cont.) Pin No. Pin name Standard waveform Power supply IN2H : 18 Operational amp. 2 input OUT2 : 19 Operational amp. 2 output IN1– : Operational amp reverse phase input IN1+ : ...
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Pin Descriptions (cont.) Standard waveform Pin No. Pin name PCI : Current feedback 25 system phase compensation Motor drive power supply Unregulated power supply Drive current output W-phase ...
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... H : Forward rotation L : Reverse rotation BR terminal H : Short brake circuit operation L : Short brake circuit stop (3) Drive amplifier The AN3861SA current drive type, and the motor drive current Ia is determined by the voltage of OUT1 terminal, as shown in Fig. – CS Rcs mV Ia max = 140 Rcs The collector voltage value is controlled as shown in Fig ...
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... VCS terminal For the AN3861SA, since the collector voltage of the sink-side output transistor is controlled to a certain value. Therefore, when the V is high enough, extra voltage is applied to the V B reduced by the VSC voltage through the circuit as shown in the following figure. 1.6V Fig.3 Switching Regulater System with VSC Terminal ...
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FC terminal This is an oscillation terminal which determines the commutation frequency at operation start and the frequency f tive voltage for switching over the charging/discharging current of the SL terminal (Refer to (6) below). Normally, f when CFC=560pF ...
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Request for your special attention and precautions in using the technical information and (1) If any of the products or technical information described in this book exported or provided to non-residents, the laws and regulations of the ...