Sanken Develops SPI-6631M 3-Phase Brushless DC Motor Driver

Advancing semiconductor technologies beyond the boundaries

Overview

Sanken develops the 3-phase brushless DC Motor Driver. Sanken/Switches Plus offers the new SPI-6631M driver with a 3A output current the small surface mount package [HSOP16 PIN] will save 50% on the PCB area.

Sanken Electric Co., Ltd. announced today the development of the SPI-6631M, a new 3-phase brushless motor driver. The new driver features an output current of 3 A and integrates a pre-drive circuit and output elements on a single chip using a compact surface mounting package, saving at least 50% of the PCB area.

Three-phase brushless DC motors driven on a low voltage and using power at a rate of around 50 W are currently employed in a wide variety of devices such as copier drums and washer/drier hot-air fans. The drivers of these motors are usually discretely configured by attaching a pre-drive circuit and output elements to a controller such as a microcontroller. However, as devices have become smaller and denser, demands have increased for the mounting area of motor drivers to be reduced—demands that have proven difficult to meet using discrete devices.

The SPI-6631M, a 3-phase brushless DC motor driver that 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.

* Wafer process technology used for single-chip integration of bipolar technology, used to control analog circuits, CMOS technology, which allows fast operation and is ideal for digital controllers, and DMOS technology, which is ideal for large-current output.

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

The number of required components has also been reduced to less than one fifth through single-chip integration, considerably reducing the number of hours required for analyzing and controlling the components.

Features

• Small surface mounting package HSOP16 pin package (Resin dimensions: 12.2 × 7.5 × 2.5 mm)
• 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.)
• 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.
• Incorporation of various protection circuits outputting fail signals during operation
  • Overcurrent protection circuit
  • Overheat protection circuit
  • Undervoltage lockout protection circuit

Applications

• Drum motors of copiers, drive motors of industrial robots, traveling motors of automatic vacuum cleaners, fan motors of washer/driers, etc.

Specifications Overview

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	Ω

Obtain more information using the options below or simply call our Sales Team on 1300 785 911.

Important Notes:

1. Photography is illustrative only
2. E.&O.E. (Errors and Omissions Excepted)

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