BA6458FP-Y

Motor driver ICs 3-phase motor driver BA6458FP-Y The BA6458FP-Y is an one-chip IC designed for driving video cassette recorder cylinder motors. It is a high-performance IC with a 3-phase, full-wave, pseudo-linear drive system. The IC is compactly packaged. FApplications Video cassette recorder cylinder motors FFeatures 1) 3-phase, full-wave, pseudo-linear drive system. 2) Output saturation voltage is low with low variation. 3) Built-in torque limit pin. FBlock diagram 4) Contains two amplifiers and two hysteresis amplifiers to amplify FG and PG signals. 5) Built-in thermal shutdown circuit. 603 Motor driver ICs FAbsolute maximum ratings (Ta=25_C) BA6458FP-Y FRecommended operating conditions (Ta=25_C) FPin descriptions 604 Motor driver ICs FElectrical characteristics (unless otherwise noted, Ta=25_C, VCC=5V, VM=12V) BA6458FP-Y 605 Motor driver ICs FCircuit operation (1) 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. 1. BA6458FP-Y (2) Torque control pin The output current can be controlled by adjusting the voltage applied to the torque control pin (pin 9). (3) Start / stop pin The motor is in the run mode when the pi...