Date: 04/02/2009

Three phase brushless DC motor driver with 3 A output current

SPI-6631M, a new 3-phase brushless motor driver from Sanken Electric features an output current of 3 Amps and integrates a pre-drive circuit and output elements on a single chip using a compact surface mounting package.

SPI-6631M, a 3-phase brushless DC motor driver saves at least 50% of the PCB area compared with drivers configured using discrete devices. This area reduction was achieved by integrating a pre-drive circuit and output elements (6 MOSFETs) on a single chip through the use of BCD process technology*, and by using a compact surface mounting package.

The SPI-6631M features an over-current protection circuit, overheat protection circuit, and under-voltage lockout protection circuit, as well as a function to report when these protection circuits are activated, contributing to higher equipment reliability.


Other features

1. Sequence-free design: The SPI-6631M can be used without a sequencer for the power supply and for the signals input to the controller (CPU, etc.).
2. Function to prevent high-side MOSFET and low-side MOSFET from being simultaneously on
High-side/low-side MOSFET short circuits do not occur even during microcontroller runaway or noise superimposition, preventing circuit malfunction and damage.

Applications: Drum motors of copiers, drive motors of industrial robots, traveling motors of automatic vacuum cleaners, fan motors of washer/driers, etc.Parameter Symbol Rating Unit
Main power supply voltage VBB 13 to 33 V
Output current IO ±3.0 A
Output MOSFET on-resistance RDS(ON) 0.4 O


Package: HSOP16 pin package (Resin dimensions: 12.2 × 7.5 × 2.5 mm)
Availability: This space saving device is sampling now with volumes in Apr 09
Price: Each1,000 yen (tax included)