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STK681-310N-E Scheda tecnica(PDF) 5 Page - ON Semiconductor |
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STK681-310N-E Scheda tecnica(HTML) 5 Page - ON Semiconductor |
5 / 14 page STK681-310N-E www.onsemi.com 5 Application Circuit Motor Drive Conditions (H : high-level input, L : low-level input) IN1 IN2 INH Comment Stop 1 (Standby) H H H or L The state where the motor is not turning Stop 2 (Power supply to the motor is off due to an input during motor operation) H H H Power supply to the motor was turned off due to a stop signal being applied during motor operation. H L H L H H Forward (CW) H L L An input signal that turns off the high and low side drive elements during forward/reverse switching is not required Reverse (CCW) L H L Brake L L L or H The ground side MOSFET is in the on state * : The state IN1 = IN2 = high, INH = L is illegal during motor operation. Notes (1) The value of the power supply bypass capacitor C1 must be set so that the capacitor ripple current, which changes with the motor current, remains within the allowable range. (2) While the Vref2 pin is normally handled by being left open, note that the thermal protection circuit will no longer operate if this pin is connected to ground or the P.S pin. (3) Current is controlled by a constant-current chopping operation by transistors TR1 and TR2. The timing for the OUT1 or OUT2 output voltage and the TR1 or TR2 collector current is shown below. (4) Do not connect or wire any of the NC (unused) pins that appear in either the block diagram or the application circuit examples to the circuit pattern on the PCB. OUT1 or OUT2 出力電圧 F1 or F2 ドレイン電流 モータ電流 30μs 0 A GND Vcc1-Vsat1 Ioピーク(電流設定値) 0 A Ioピーク(電流設定値) Vcc2(5V) IN1 IN2 PWM Vref1b Vref1a Vref2 RSO RSI S.P GND N.C N.C N.C N.C モータ Vcc1=24V OUT1 OUT2 C1 47μ~/50V 10μ/50V C2 STK681-360-E CCW CW 15 12 13 14 17 16 18 3 19 7 9 8 6 4 5 10 11 1 2 INH STK681-310N-E 50 μs TR1 or TR2 コレクター電流 Collector current Io peak (Current setting value) Io peak (Current setting value) Motor current Output Voltage Motor |
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