A4923: 3-Phase Sinusoidal Motor Controller

Description

This device is no longer in production. The device should not be purchased for new design applications. Samples are no longer available. Date of status change: January 20, 2016.

Designed to control three-phase brushless DC motors, the A4923 is capable of high-current gate drive for an all N-channel power MOSFET 3-phase bridge.

Sinusoidal current control is employed via output PWM, to minimize vibration, noise, and torque ripple.

Internal circuit protection includes thermal shutdown with hysteresis, over-current, and dead-time protection. Special power up sequencing is not required.

The A4923 is supplied in a 32 terminal 5×5×0.9mm QFN package (suffix ET) with exposed pad for enhanced thermal dissipation. This small footprint package is lead (Pb) free with 100% matte tin leadframe plating, and it is also available with optional sidewall plating.

Top Features

  • Sinusoidal Drive Current
  • Hall Element Inputs
  • PWM Current Limiting
  • Dead-time Protection
  • FGO (Tach) Output
  • Internal UVLO
  • Thermal Shutdown Circuitry

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
APEK4923GET-01-WO DEMO BOARD -20°C to 85°C No -- Discontinued Contact your
local sales rep
Check
Distributor Stock
A4923GETTR-R 32-lead QFN -40°C to 105°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A4923GETTR-T 32-lead QFN -40°C to 105°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

Packaging

Package