TMC236B-PA Integrated Circuits (ICs)

Series:	--
Packaging:	Tray
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Motor Type - Stepper:	Bipolar
Motor Type - AC, DC:	--
Function:	Driver - Fully Integrated, Control and Power Stage
Output Configuration:	Half Bridge (4)
Interface:	SPI
Technology:	HVCMOS
Step Resolution:	1, 1/2, 1/4, 1/8, 1/16
Applications:	General Purpose
Current - Output:	1.5A
Voltage - Supply:	3 V ~ 5.5 V
Voltage - Load:	7 V ~ 34 V
Operating Temperature:	-40°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	44-LQFP
Supplier Device Package:	44-PQFP (10x10)

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Introduction

TMC236B-PA is a DC motor driver specifically for replacing the obsolete TI SN754410 and SN754429 motor drivers. It is one of the motor drivers, controllers and power management integrated circuits (PMICs) from Trinamic.

Application Field

The TMC236B-PA is designed to control the speed, position and movements of both DC and stepper motors. It offers a wide range of applications, particularly:

• Robotics
• Autonomous Vehicles
• Factory Automation
• 3D Printing
• Medical Automation
• Precision Positioning and Actuation

Working Principle of TMC236B-PA

The TMC236B motor driver works in two modes: Full-Step and Micro-Step. The driver requires two independent power sources: one for the motor and one for the logic. The motor current can be set with a single external resistor, which has a maximum value of 1.2A per channel. The logic voltage can be set between 3.3V and 5.5V.The TMC236B is a 6-channel motor driver. Each channel has two I/O pin pairs and each pin pair controls one motor coil. A pair of inputs (COM, PWM) and two outputs (EN, PHx) control the four phase sequences. The EN pin is used to enable and disable the output phase and the PWM pin is used to control the speed of the motor.

Protection Features

The TMC236B features several integrated protection features, which make it reliable and safe to use. First, it has an over temperature protection that reduces the power to the motor and shuts the driver off if it exceeds a certain temperature. Second, it has a short circuit protection feature that detects and prevents short circuits between the power inputs and the motor coil. Finally, the TMC236B also has an overcurrent protection feature that prevents excessive motor currents.

Conclusion

The TMC236B is a powerful and reliable motor driver for a wide range of DC and stepper motor applications. It offers advanced protection features, allowing for accurate and safe motor control. Additionally, with its low-price, the TMC236B is an ideal solution for budget conscious design solutions.

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