Datenblatt-Suchmaschine für elektronische Bauteile |
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BA6840 Datenblatt(PDF) 5 Page - Rohm |
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BA6840 Datenblatt(HTML) 5 Page - Rohm |
5 / 9 page 527 Motor driver ICs BA6840BFS / BA6840BFP-Y / BA6840BFP / BA6842BFS FCircuit operation (1) Hall input Xoutput The 3-phase Hall signal is amplified in the hall amplifiers and sent to the matrix section, where the signal is further amplified and combined. After the signal is converted to a current in the amplitude control circuit, the current is supplied to the output driver, which then provides a motor drive current. The phases of the Hall input signal, output voltage, and output current are shown in Fig. 5. (2) Torque control pin The RNF-pin current depends on the torque control input voltage (EC) as shown in Fig. 6. (3) Start / stop pin The motor is in the run mode when the pin input voltage is 3.5V or more, and in the idle mode (all output transis- tors are off) when the voltage is 1.5V or less. (4) Power ground pin (RNF pin) The RNF pin is the output stage ground pin. Connect a re- sistor (0.5 Ω recommended) between this pin and the ground to monitor the output current. (5) Phase compensation pin (CNF pin) Connect and adjust a capacitor between this pin and the ground if the output tends to oscillate. |
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Ähnliche Beschreibung - BA6840 |
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