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Home » NEWEST Products » New by Manufacturer » Texas Instruments » Brushless DC Motor Solution by TI
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Texas Instruments / National Semiconductor Brushless DC Motor Solutions
Brushless DC Motor Solution

TI Winning Solutions

Texas Instruments / National Semiconductor Brushless DC Motor Solutions

Check out a brushless DC motor drive solution that provides programmable processing for multiple BLDC motor applications, coupled with 100V MOSFET drivers for advanced control of high torque motors. This TI Winning Solution is composed of the following:

LM5101BMA - 100V MOSFET Driver
LM3S8971 - Stellaris Integrated Motor Control/Driver
AMC1200 - Isolation Amplifier
DRV8312 - Three Phase Brushless DC Motor Driver

Additional Resources:

TI Motor Solutions Guide
TI Industrial Automation Solutions Guide

Key Solution Features

  • 48V and 96V based eBike and Light Electric Vehicles applications for longer range and greater torque
  • Single and three phase motors, sensor and sensor-less applications
  • Programmable processor accommodates many motor configurations
  • Configurable digital engine allows for new levels of performance and system flexibility. Different drive profiles, i.e., range vs. acceleration vs. torque can be implemented for any given application
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Texas Instruments / National Semiconductor Brushless DC Motor Solutions


LM5101BMA - 100V MOSFET Driver

The LM5100A/B/C and LM5101A/B/C High Voltage Gate Drivers are designed to drive both the high-side and the low-side N-Channel MOSFETs in a synchronous buck or a half-bridge configuration. The floating high-side driver is capable of operating with supply voltages up to 100V. The "A" versions provide a full 3A of gate drive while the "B" and "C" versions provide 2A and 1A respectively. The outputs are independently controlled with CMOS input thresholds (LM5100A/B/C) or TTL input thresholds (LM5101A/B/C). An integrated high voltage diode is provided to charge the high-side gate drive bootstrap capacitor. A robust level shifter operates at high speed while consuming low power and providing clean level transitions from the control logic to the high-side gate driver.

  • Drives both a high-side and low-side N-Channel MOSFETs
  • Independent high and low driver logic inputs
  • Bootstrap supply voltage up to 118V DC
  • Fast propagation times (25 ns typical)
  • Drives 1000 pF load with 8 ns rise and fall times
  • Excellent propagation delay matching (3 ns typical)
  • Supply rail under-voltage lockout
  • Low power consumption
  • Pin compatible with HIP2100/HIP2101
  • 2 outputs
  • Dual, independent driver configuration
  • 7.5 VCC min. V.
  • 14 VCC max. V.
  • 2A peak output current
  • 10ns rise time
  • 10ns fall time
  • 25ns prop delay
  • SOIC-8 pin/package
Texas Instruments / National Semiconductor LM5101BMA
Image shown is for reference only. Other
pin/package combinations may be available.

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Additional Resources
  • Current Fed push-pull converters
  • Half and full-bridge power converters
  • Synchronous buck converters
  • Two switch forward power converters
  • Forward with Active Clamp converters

Simplified Block Diagram
Texas Instruments / National Semiconductor LM5101BMA


LM3S8971 - Stellaris® Integrated Motor Control/Driver

The Stellaris® LM3S8971 microcontroller is based on the ARM® Cortex™-M3 controller core operating at up to 50 MHz, with 256 kB flash and 64 kB SRAM. The LM3S8971 also features real-time industrial connectivity, with a 10/100 Ethernet MAC/PHY, a CAN controller, an SSI / SPI controller, and a UART. The LM3S8971 microcontroller also features advanced motion control features, including 6 motion-control PWM outputs with dead-band, a quadrature encoder input for precise position monitoring, and a fault protection input for low-latency shutdown. The microcontroller also features intelligent analog capability, including 1 analog comparators and 8 channels of highly accurate 10-bit analog-to-digital conversion - with the ability to sample at speeds of 1M samples per second.

  • 32-bit ARM® Cortex™-M3 50-MHz processor core with System Timer (SysTick), integrated Nested Vectored Interrupt Controller (NVIC), Memory Protection Unit (MPU), and Thumb-2 instruction set
  • Full-featured debug solution with debug access via JTAG and Serial Wire interfaces, and IEEE 1149.1-1990 compliant Test Access Port (TAP) controller
  • 256 KB single-cycle flash and 64 KB single-cycle SRAM
  • Lower-power battery-backed Hibernation module with Real-Time Clock
  • 4-38 GPIOs (depending on configuration) with programmable control for GPIO interrupts and pad configuration
  • ARM FiRM-compliant Watchdog Timer ; plus four General-Purpose Timer Modules (GPTM), each of which provides two 16-bit timers/counters and can be configured to operate independently
  • 10-bit Analog-to-Digital Converter (ADC) with eight analog input channels and a sample rate of one million samples/second
  • Fully programmable 16C550-type UART with IrDA support
  • Synchronous Serial Interface (SSI), supporting operation for Freescale SPI, MICROWIRE, or Texas Instruments synchronous serial interfaces
  • Controller Area Network (CAN) Interface using CAN protocol version 2.0 part A/B and with bit rates up to 1 Mbps
  • Highly configurable 10/100 Ethernet Controller that conforms to the IEEE 802.3-2002 specification with full- and half-duplex modes for both 100 Mbps and 10 Mbps operation, and automatic MDI/MDI-X cross-over correction
  • One integrated analog comparator configurable for output to initiate an ADC sample sequence, drive an output pin or generate an interrupt
  • Three PWM generator blocks, each with one 16-bit counter, two PWM comparators, a PWM signal generator, a dead-band generator, and an interrupt/ADC-trigger selector
  • Quadrature Encoder Interface (QEI) featuring position integrator to track encoder position and velocity capture using built-in timer
  • Industrial and extended temperature RoHS-compliant 100-pin LQFP package and industrial-range RoHS-compliant 108-ball BGA package

Texas Instruments / National Semiconductor LM3S8971
Image shown is for reference only. Other
pin/package combinations may be available.

View Product Detail

Additional Resources
  • 256 KB Flash
  • 64 KB RAM
  • 50 MHz max speed
  • Memory Protection Unit (MPU)
  • 5 Timers
  • RTC
  • Watchdog Timer
  • 6 Motion PWMs
  • PWM Fault
  • Dead-Band Generator
  • 6 capture pins
  • QEI
  • MAC + PHY Ethernet
  • 8 channel ADC Unit
  • 1- bit ADC Resolution
  • 1000 kSPS ADC Sample Rate
  • Internal Temp Sensor
  • Analog Comparators
  • 38 Max. 5-V tolerant GPIOs
  • 4 dedicated 50V tolerant GPIOs
  • Battery-backed hibernation module
  • Internal LDO voltage regulator
  • 100LQFP, 108NFBGA Pin/Package

Functional Diagram
Texas Instruments / National Semiconductor LM3S8971


AMC1200 - Isolation Amplifier

The AMC1200 is a precision isolation amplifier with an output separated from the input circuitry by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier has been certified to provide galvanic isolation of up to 4000 VPEAK according to UL1577 and IEC60747-5-2. Used in conjunction with isolated power supplies, this device prevents noise currents on a high common-mode voltage line from entering the local ground and interfering with or damaging sensitive circuitry.

The input of the AMC1200 is optimized for direct connection to shunt resistors or other low voltage level signal sources. The excellent performance of the device supports accurate current control resulting in system-level power saving and, especially in motor-control applications, lower torque ripple.

  • ±250-mV Input Voltage Range Optimized for Shunt Resistors
  • Very Low Nonlinearity: 0.075% max at 5 V
  • Low Offset Error: 1.5 mV max
  • Low Noise: 3.1 mVRMS typ
  • Low High-Side Supply Current: 8 mA max at 5 V
  • Input Bandwidth: 60 kHz min
  • Fixed Gain: 8 (0.5% accuracy)
  • High Common-Mode Rejection Ratio: 108 dB
  • 3.3-V Operation on Low-Side
  • Certified Galvanic Isolation:
    • UL1577 and IEC60747-5-2 Approved
    • Isolation Voltage: 4000 VPEAK
    • Working Voltage: 1200 VPEAK
    • Transient Immunity: 10 kV/µs min
  • Typical 10-Year Lifespan at Rated Working Voltage (see Application Report SLLA197)
  • Fully Specified Over the Extended Industrial Temperature Range
  • Shunt Resistor Based Current Sensing in:
    • Motor Control
    • Green Energy
    • Frequency Inverters
    • Uninterruptible Power Supplies
Texas Instruments AMC1200 Fully Differential Isolation Amplifiers

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AMC1200 Evaluation Module
Functional Diagram
Texas Instruments AMC1200 Fully Differential Isolation Amplifiers


DRV8312 - Three Phase Brushless DC Motor Driver

The DRV8312/32 are high performance, integrated three phase motor drivers with an advanced protection system. Because of the low RDS(on) of the power MOSFETs and intelligent gate drive design, the efficiency of these motor drivers can be up to 97%, which enables the use of smaller power supplies and heatsinks, and are good candidates for energy efficient applications.

The DRV8312/32 require two power supplies, one at 12 V for GVDD and VDD, and another up to 50 V for PVDD. The DRV8312/32 can operate at up to 500-kHz switching frequency while still maintain precise control and high efficiency. They also have an innovative protection system safeguarding the device against a wide range of fault conditions that could damage the system.

  • High-Efficiency Power Stage (up to 97%) with Low RDS(on) MOSFETs (80 m at TJ = 25°C)
  • Operating Supply Voltage up to 50 V (70 V Absolute Maximum)
  • DRV8312 (power pad down): up to 3.5 A Continuous Phase Current (6.5 A Peak)
  • DRV8332 (power pad up): up to 8 A Continuous Phase Current ( 13 A Peak)
  • Independent Control of Three Phases
  • PWM Operating Frequency up to 500 kHz
  • Integrated Self-Protection Circuits Including Undervoltage, Overtemperature, Overload, and Short Circuit
  • Programmable Cycle-by-Cycle Current Limit Protection
  • Independent Supply and Ground Pins for Each Half Bridge
  • Intelligent Gate Drive and Cross Conduction Prevention
  • No External Snubber or Schottky Diode is Required
  • BLDC Motors
  • Three phase permanent magnet synchronous motors
  • Inverters
  • Half Bridge Drivers
  • Robotic Control Systems
Texas Instruments / National Semiconductor DRV8312

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More About DRV8312-C2-KIT

More About DRV8x Motor Drivers

Simplified Application Diagram
Texas Instruments / National Semiconductor DRV8312

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  • Industrial
  • Embedded Solutions|Semiconductors|Embedded Processors|IC-MCU/MPU|Integrated Circuits|Driver ICs|IC-Power Management