Datasheet4U Logo Datasheet4U.com

BA6871BS Datasheet 3-phase Motor Driver

Manufacturer: ROHM

Overview: Motor driver ICs 3-phase motor driver BA6871BS The BA6871BS is a 3-phase, full-wave, pseudo-linear motor driver suited for VCR capstan motors. The IC has a torque ripple cancellation circuit to reduce wow and flutter, and an output transistor saturation prevention circuit that provides superb motor control over a wide range of current. The built-in motor power series regulator allows applications with low power consumption.

Datasheet Details

Part number BA6871BS
Manufacturer ROHM
File Size 201.29 KB
Description 3-phase motor driver
Datasheet BA6871BS_Rohm.pdf

General Description

s BA6871BS 675 Motor driver ICs FInput / output circuits (1) Driver output BA6871BS (2) Hall input (3) ED / S (4) Torque control input (5) Torque limit and current sensing 676 Motor driver ICs BA6871BS (6) Series regulator (7) Amplifier I / O 677 Motor driver ICs BA6871BS FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC1 = 5V, VM = VCC2 = 12V, AMP*VCC = 12V) 678 Motor driver ICs FCircuit operation (1) Pseudo-linear output and torque ripple cancellation The IC generates a trapezoidal (pseudo-linear) output current, whose waveform phase is 30 degrees ahead of that of the Hall input voltage (Fig.

8).

BA6871BS The trapezoidal waveform of output current would create intermittence in the magnetic field generated by the 3-phase motor, and would result in an irregular rotation of the motor.

Key Features

  • 1) 3-phase, full-wave, pseudo-linear driver system. 2) High performance torque ripple cancellation circuit. 3) Reversal braking by detecting the motor direction. 4) Saturation prevention circuit for high- and low-side output transistors. FAbsolute maximum ratings (Ta = 25_C) 5) Motor power supply series regulators. 6) Built-in circuit for output-to-GND short-circuit detection. 7) Two FG amplifiers. 8) Available in a SDIP 32-pin power shrink package. FRecommended operating conditions (Ta = 25_C.

More Datasheets from ROHM

Part Number Description
BA6870S 3-phase motor driver
BA6872AFM 3-phase motor driver and reversible motor driver
BA6878EFV 3-phase motor driver
BA6800AF Fluorescent display tube level meter driver/ 16-point x 2 channel/ VU scale/ bar display
BA6800AS Fluorescent display tube level meter driver/ 16-point x 2 channel/ VU scale/ bar display
BA6803S Fluorescent display tube level meter driver/ 16-point x 2 channel/ VU scale/ bar display
BA6809F 2-phase half-wave motor driver
BA6810F Fluorescent display tube level meter driver/ 12-point x 2 channel/ VU scale/ bar display
BA6810S Fluorescent display tube level meter driver/ 12-point x 2 channel/ VU scale/ bar display
BA6811F Fan motor driver IC

BA6871BS Distributor