Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

[FAQ] What are the best alternate devices for DRV8432?

Part Number: DRV8412
Other Parts Discussed in Thread: DRV8462, DRV8262, DRV8962

As DRV8432 moves into the end of its life the next step is to choose an alternative part. This device had a broad application base in medical devices, portable electronics, factory automation, building automation and test equipment. 

One option is to use the lower-current package option of the device, the DRV8412.  This device has all of the same features and parameters as the DRV8432, but its heatsink is on the bottom of the device so it uses the PCB as a heatsink.  This device can drive up to 6A continuous current or 12A peak current.  These current limits can be achieved or surpassed by following our Best Practices for Board Layout of Motor Drivers.  This includes a few tips such as 

You can also add external heat-sinks to the top of the DRV8412 or the bottom of the PCB.  

However, there are several new devices that have many more features than the DRV8432 depending on your application.  These devices collectively should be able to replace the DRV8432 with improved functionality and protection features depending on the target application.  

Summary of new recommended devices:

DRV8432 (EOL) DRV8462 DRV8262 DRV8962
Key Features to consider for alternate devices

 

  • Package option for exposed top pad 

  • Only for Stepper Motor applications
  • Integrated current sensing and regulation up to ±5% sense accuracy (IPROPI) 
  • Smart tune and mixed decay
  • Automatic microstepping
  • Auto-torque and standstill power saving mode
  • Stall Detection
  • Package option for higher currents with exposed top pad (DDV)

  • Single H-Bridge mode like DRV8432 parallel full bridge mode
  • Integrated current sense and regulation up to ±4% sense accuracy (IPROPI) 
  • Configurable off-Time PWM chopping
  • Integrated Self-Protection Circuit
  • Package option for higher currents with exposed top pad (DDV)
  • Integrated current sense and regulation up to ±3.5% sense accuracy (IPROPI) 
  • Independent half bridge control up to 4 channels 
  • Package option for higher currents with exposed top pad (DDV)
Protection Features
  • VM Undervoltage
  • Overtemperature
  • Overcurrent protection
  • VM Undervoltage
  • Overtemperature
  • Overcurrent protection
  • Sensorless Stall Detection
  • Open-Load detection
  • VM Undervoltage
  • Overtemperature
  • Overcurrent protection
  • Charge pump undervoltage
  • VM Undervoltage
  • Overtemperature
  • Overcurrent protection
  • Charge pump undervoltage
Control Mode PWM

Step/Direction

SPI Configuration

Phase/Enable

PWM

Independent 1/2-Bridge

PWM

Max PWM frequency 500 kHz N/A 200 kHz 200 kHz
Max Operating Supply Voltage 52 V 65 V 65 V 65 V
Peak Current in Dual H-Bridge mode 12 A 10 A 16 A 10 A
Peak current in Parallel / Single H-Bridge Mode 24 A N/A 32 A 20 A
Typical Load Type

Brushed DC Motors

Stepper Motors

Thermoelectric Coolers (TEC)

Brushless DC Motors (BLDC)

3-phase permanent magnet synchronous motor (PMSM)

Stepper Motors

Brushed DC Motors

Stepper Motors

Thermoelectric Coolers (TEC)

Brushed DC Motors

Stepper Motors

Thermoelectric Coolers (TEC)

Solenoids 

Brushless DC Motors (BLDC)

3-phase permanent magnet synchronous motor (PMSM)

Note that each of the recommended new devices come in two package options - DDW and DDV.  The DDW package has the PowerPad on the bottom of the device, facing the PCB.  The DDV package has the PowerPad on the top of the device to support an external heat sink, and thus the DDV package is rated for double the current capabilities of the DDW package.  The current specs listed in the table reflect the DDV package. 

Below is a brief explanation of which device is recommended to replace the DRV8432 depending on your specific load or application.  

Brushed DC Motors - The DRV8262 is the best option to replace the DRV8432 to drive a BDC motor.  The DDV package of the DRV8262 can drive 16 A peak current in dual H-bridge mode, and 32 A peak in single (parallel) H-bridge mode.  It features standard braking modes of high-side slow decay and coast (fast decay) mode, along with a low-current sleep mode consuming only 3uA .  It also has integrated current sensing with ±4% sense accuracy at maximum current. The DRV8962 is another great option with similar specs.

Stepper Motors - The DRV8462 is the best option to drive a stepper motor when coming from a DRV8432.  This device has many advanced features including Smart tune and mixed decay regulation options, Silent step decay mode for silent operation at standstill and low speed, Automatic Microstepping mode for step frequency interpolation, Customizable microstepping indexer table, Auto-torque for load dependent current control, Standstill Power Saving mode, Stall Detection, and all of our standard protection features. The DDV package supports up to 10A full-scale current and 7A RMS, making it our highest-current integrated stepper motor driver. The DRV8262 or DRV8962 can also drive stepper motors, but do not have an integrated indexer or any other stepper-specific features. 

Thermoelectric Coolers (TEC) - The DRV8962 or DRV8262 are the best options to drive a TEC.  They support up to 200kHz PWM frequency.  The DRV8262 has a higher current capabilities, able to drive two TECs
bi-directionally with up to 10A current or a single TEC with up to 20A current.  The DRV8962 can drive two TECs bi-directionally with up to 5A current or a single TEC with up to 10A current.  Each of their datasheets has a detailed section (8962 / 8262) on driving a TEC detailing the LC filter design, resonant frequency considerations, ripple voltage/current, and the reduction in maximum temperature differential.  One advantage of these devices is eliminating external current shunt resistors, ad the device has an internal current mirror for each half-bridge.  

Brushless DC Motors (BLDC) - The DRV8962 supports independent control of three phases required to drive the BLDC motor. There are also many better options for controlling a BLDC motor in our Brushless DC Motor Driver Portfolio, such as the DRV8316.

3-phase permanent magnet synchronous motor (PMSM) - The DRV8962 can drive a 3-phase PMSM.