PMIC - Motor Drivers, Controllers

Part Number	Description / PDF	Quantity
A4987SESTR-T Allegro MicroSystems	IC MTR DRVR BIPOLAR 3-5.5V 24QFN	7218
A3916GESTR-T-1 Allegro MicroSystems	IC MTR DRVR BIPOLR 2.7-15V 20QFN	0
A3916GESTR-T Allegro MicroSystems	IC MTR DRV BIPOLAR 2.7-15V 16QFN	0
A4994KLPTR-T Allegro MicroSystems	IC DVR FULL BRIDGE DUAL 20TSSOP	0
A4913KEVSR-J-1 Allegro MicroSystems	IC MOTOR DRIVER MULTIPHASE 48QFN	0
A1448EEWLT-P Allegro MicroSystems	IC MOTOR DRIVER 1.8V-4.2V 6DFN	529
A4970SLBTR-T Allegro MicroSystems	DUAL FULL BRIDGE PWM MOTOR DRIVE	488
A4916KJPTR-T-1 Allegro MicroSystems	IC MOTOR DRVR MULTIPHASE 48LQFP	0
A3904EEWTR-P Allegro MicroSystems	MOTOR DRIVER IC	5144
A4941GLPTR-T Allegro MicroSystems	IC MOTOR DRIVER 5V-16V 16TSSOP	1507
A4956GESTR-T Allegro MicroSystems	IC MOTOR DRIVER 5.5V-50V 20QFN	14737
A5984GLPTR-T Allegro MicroSystems	IC MTR DRV BIPOLAR 8-40V 24TSSOP	0
A4984SLPTR-T Allegro MicroSystems	IC MTR DRV BIPOLR 3-5.5V 24TSSOP	0
A5988GEVTR-1-T Allegro MicroSystems	IC MTR DRVR BIPOLAR 8V-40V 36QFN	0
A5977GLPTR-T Allegro MicroSystems	IC MTR DRV BIPOLR 3-5.5V 28TSSOP	0
A4952ELYTR-T Allegro MicroSystems	FULL BRIDGE DMOS PWM MOTOR DRIVE	273
A4993KLPTR-T Allegro MicroSystems	IC MOTOR DVR STEP AUTO	0
A5933GLNTR-T Allegro MicroSystems	THREE PHASE SENSORLESS FAN DRIVE	0
A4947GLPTR-T Allegro MicroSystems	SINUSOIDAL BLDC FAN DRIVER W/HAL	87270
A5933GEJTR-T Allegro MicroSystems	THREE PHASE SENSORLESS FAN DRIVE	0

PMIC - Motor Drivers, Controllers

1. Overview

Power Management ICs (PMICs) dedicated to motor drivers and controllers are specialized semiconductor devices that manage the operation of electric motors by regulating power delivery, speed, direction, and protection features. These components are critical in modern electronics for optimizing energy efficiency, ensuring precise motion control, and enhancing system reliability. They are widely used in robotics, automotive systems, industrial automation, and consumer electronics.

2. Main Types & Functional Classification

Type	Functional Features	Applications
H-Bridge Drivers	Bi-directional current flow control, PWM integration	DC motor direction control in robotics
Stepper Motor Controllers	Microstepping, current regulation, position control	3D printers, CNC machines
Brushless DC (BLDC) Controllers	Commutation logic, Hall sensor interface	Electric vehicles, drones
Integrated FET Drivers	Embedded MOSFETs, thermal shutdown	Portable devices, power tools

3. Structure & Components

A typical PMIC for motor control consists of:

Physical Structure: Standard packages like QFN, TSSOP, or BGA for compact integration
Internal Modules:
- Gate drivers for MOSFET/IGBT control
- Current sensing amplifiers
- Protection circuits (OCP, OTP, UVLO)
- Power supply regulation units
Interfaces: PWM, SPI, I2C, or analog inputs for control signals

4. Key Technical Specifications

Parameter	Description & Importance
Operating Voltage Range	Determines compatibility with power sources (e.g., 4.5V 40V for automotive)
Output Current Capacity	Defines motor power handling (e.g., 1A 10A continuous)
Efficiency (Typical >90%)	Minimizes power loss and thermal stress
Protection Features	Includes overcurrent, thermal, and shoot-through protection
Control Interface	Supports PWM, Hall sensors, or serial communication

5. Application Fields

Consumer Electronics: Drones, robotic vacuum cleaners, smart locks
Industrial: Servo motors, automated manufacturing arms
Automotive: Electric power steering, HVAC blower motors
Medical: Infusion pumps, diagnostic equipment

6. Key Manufacturers & Products

Manufacturer	Product Model	Key Features	Application Example
TI (Texas Instruments)	DRV8825	1.8A output, microstepping	3D printer extruders
STMicroelectronics	L6470	600mA, SPI control	Industrial valves
ON Semiconductor	LV8711	3-phase BLDC controller	Electric scooters
Infineon	TLE94112	12-channel H-bridge	Automotive seat adjusters

7. Selection Guidelines

Key considerations include:

Match voltage/current ratings with motor specifications
Select control interface (PWM vs. serial) based on system design
Verify protection features for harsh environments
Optimize package size for space-constrained applications
Evaluate cost vs. integration level (standalone vs. system-on-chip)

8. Industry Trends

Emerging trends include:

Higher integration with embedded MOSFETs and sensors
Adoption of field-oriented control (FOC) for BLDC motors
Development of automotive-grade ICs with ASIL-D compliance
AI-driven predictive maintenance features
Wide bandgap semiconductor integration (GaN/SiC) for higher efficiency