UC3638DWTRG4

Introduction

The UC3638DWTRG4 is an high voltage/performance three-phase brushless DC motor driver integrated circuit from Texas Instruments. This IC is designed to control high-current drives for brushless DC motors. It has a wide variety of applications in industrial and consumer applications such as air-conditioners, pumps and vending machines. The UC3638DWTRG4 uses a variable on-time technique to precisely regulate the output currents within motor windings and provides some protection features to guard against over-currents and under-voltages. It supports Hall effect sensing as well as non-Hall effect sensing and is compatible with a range of Hall effect ICs.

PMIC - Motor Drivers, Controllers

Features of UC3638DWTRG4

The UC3638DWTRG4 is an integrated circuit that combines high voltage, high performance, and a broad operating range to control and drive brushless DC motors without the need for external components. The integrated circuit uses a variable on-time technique to precisely regulate the output currents within motor windings and also provides some protection features to guard against over-currents and under-voltages. The IC has a wide operating range of power supply voltages, from 4V to 600V, is capable of driving back-EMF up to the supply voltage, and is capable of controlling up to three-phase brushless DC motors up to 3.4 kW at various frequencies.

It supports Hall and non-Hall effect sensing, which combines the control and driver stages of the motor and eliminates the need for an external motor controller and also features extended life of motor windings. Moreover, the IC is compatible with a range of Hall effect ICs, such as the HX2263A and HX2114A, and also supports Pulsed Output techniques.

UC3638DWTRG4 Application Field

The UC3638DWTRG4 is applicable to a wide range of industrial and consumer products, such as air-conditioners, pumps and vending machines. It is compatible with a variety of motors including permanent magnet and brush regulated DC motors powered from 4V to 600V. It is also an ideal choice for applications with general-purpose motors with power up to 3.4 kilowatts.

The device can be used to control motors with Hall effect or non-Hall effect sensing, as well as for closed loop control solutions requiring speed or torque control. Its advanced feature set offers protection from short circuits, over-currents and under-voltages, as well as current-sense feedback for precise current regulation.

UC3638DWTRG4 Working Principle

The UC3638DWTRG4is a high voltage/high performance IC and can be used to control brushless DC motors without the need for external components. The device uses a variable on-time technique to precisely regulate the output currents within motor windings. The device supports Hall and non-Hall effect sensing to control and drive the motor. The internal microcomputer uses the Hall effect sensor signal, or other signal conditioners, to modulate the driver outputs based on the desired motor speed and direction. The device includes protection circuitry to protect it from over-currents, under-voltages, and short circuits.

The UC3638DWTRG4 has a variety of protections implemented to guard against short circuit, under-voltage, and over-current conditions. When a short circuit is detected, the circuit will disable the output drivers and open the current loop to protect the motors from damages. The under-voltage protection sets limits for the input voltage to ensure that the voltage does not go below a certain level which may damage the motor windings. The over-current protection allows the current to be monitored and sets a maximum value which if exceeded will cause the motors to shut off.

Conclusion

The UC3638DWTRG4 is a high voltage and highly efficient three-phase brushless DC motor driver integrated circuit by Texas Instruments. This IC is compatible with a range of Hall effect ICs, such as the HX2263A and HX2114A, and can control motors up to 3.4 kilowatts at various frequencies. The UC3638DWTRG4 is suitable for applications that require speed or torque control, such as air-conditioners, pumps, and vending machines. It has also protection circuitry for short circuit, under-voltage, and over-current conditions and is a reliable solution for controlling and driving brushless DC motors.