A4931METTR-T 3-Phase Brushless DC Motor Controller IC

• shape: Round
• Conductive Type: Unipolar Integrated Circuit
• Integration: LSI
• Technics: Thick Film IC
• Application: Specific Integrated Circuits
• Type: Digital IC
• Model NO.: A4931METTR-T
• MFG.: ALLEGRO
• D/C: 22+
• Package: WQFN28
• Quality: Genuine New Original
• Transport Package: Box
• Origin: China
• HS Code: 8542390000
• Production Capacity: 1000000PCS

Product Description

Description

A4931METTR-T : Motor Driver Power MOSFET Parallel 28-QFN (5x5)

Mfr. Part#: A4931METTR-T

Mfr.: ALLEGRO

Datasheet: (e-mail or chat us for PDF file)

ROHS Status: 

Quality: 100% Original

Warranty: ONE YEAR
 

 

Product Status	Active
Motor Type - Stepper	-
Motor Type - AC, DC	Brushless DC (BLDC)
Function	Controller - Commutation, Direction Management
Output Configuration	Pre-Driver - Half Bridge (3)
Interface	Parallel
Technology	Power MOSFET
Step Resolution	-
Applications	General Purpose
Current - Output	-
Voltage - Supply	8V ~ 37.5V
Voltage - Load	-
Operating Temperature	-20°C ~ 105°C (TA)
Mounting Type	Surface Mount
Package / Case	28-VFQFN Exposed Pad
Supplier Device Package	28-QFN (5x5)
Base Product Number	A4931

FEATURES AND BENEFITS
▪ Drives 6 N-channel MOSFETs ▪ Synchronous rectification for low power dissipation ▪ Internal UVLO and thermal shutdown circuitry ▪ Hall element inputs ▪ PWM current limiting ▪ Dead time protection ▪ FG outputs ▪ Standby mode ▪ Lock detect protection ▪ Overvoltage protection


The A4931 is a complete 3-phase brushless DC motor pre-driver. The device is capable of driving a wide range of N-channel power MOSFETs and can support motor supply voltages up to 30 V. Commutation logic is determined by three Hall-element inputs spaced at 120°. Other features include fixed off-time pulse-width modulation (PWM) current control for limiting inrush current, locked-rotor protection with adjustable delay, thermal shutdown, overvoltage monitor, and synchronous rectification. Internal synchronous rectification reduces power dissipation by turning on the appropriate MOSFETs during current decay, thus shorting the body diode with the low RDS(on) MOSFET. Overvoltage protection disables synchronous rectification when the motor pumps the supply voltage beyond the overvoltage threshold during current recirculation. The A4931 offers enable, direction, and brake inputs that can control current using either phase or enable chopping. Logic outputs FG1 and FG2 can be used to accurately measure motor rotation. Output signals toggle state during Hall transitions, providing an accurate speed output to a microcontroller or speed control circuit. The A4931 is supplied in a 5 mm × 5 mm, 28-terminal QFN package with exposed thermal pad. This small footprint package is lead (Pb) free with 100% matte-tin leadframe plating.

 

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