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BA6970FS Datasheet 2-phase Motor Driver For Vcr Cylinder Motors

Manufacturer: ROHM

Overview: Motor driver ICs 2-phase motor driver for VCR cylinder motors BA6970FS The BA6970FS is a direct-drive motor driver suitable for 2-phase, full-wave linear motors. The IC consists of a Hall amplifier control circuit, driver circuits, FG / PG signal amplifiers, and hysteresis amplifiers.

Datasheet Details

Part number BA6970FS
Manufacturer ROHM
File Size 136.51 KB
Description 2-phase motor driver for VCR cylinder motors
Datasheet BA6970FS_Rohm.pdf

General Description

s BA6970FS 597 Motor driver ICs FInput / output circuits (1) ECV (22 pin) BA6970FS (4) I / O of amplifiers 1 and 2 Fig.1 (2) Coil output (8, 6, 5, 3 pin) Fig.4 (5) I / O of hysteresis amplifiers Fig.2 (3) Hall inputs (9, 10, 11, 12 pin), ECI input Fig.5 ∗Note that the resistance values can vary ±30% Fig.3 598 Motor driver ICs FCircuit operation (1) The signal from the Hall device is amplified by the Hall amplifier and then supplied to the driver circuit.

The driver gain, which is constant, is regulated by changing the Hall amplifier gain with the ECI input current or the ECV input voltage (ECI and ECV are output current control pins).

The motor rotational speed is sensed by the FG, and the output from which is F / I-converted and supplied to the ECI pin or F / V-converted and supplied to the ECV pin as a feedback signal, so that a constant rotational speed is maintained as follows (Fig.

Key Features

  • 1) Linear drive system provides low switching noise. 2) Output current can be controlled by either current or voltage input. 3) Two amplifiers and two hysteresis amplifiers. FBlock diagram 4) Constant supply voltage pin for hall devices. 5) High ratio of output current and control current. (4000 typically) 6) Available in a compact surface-mount package. 594 Motor driver ICs FAbsolute maximum ratings (Ta = 25_C) BA6970FS FRecommended operating conditions (Ta = 25_C) 595 Motor driver ICs F.

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BA6970FS Distributor