MC34920EIR2

Step Resolution:	--
Base Part Number:	MC34920
Supplier Device Package:	44-PLCC (16.59x16.59)
Package / Case:	44-LCC (J-Lead)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 135°C (TJ)
Voltage - Load:	21 V ~ 42 V
Voltage - Supply:	3.3V, 5V
Current - Output:	1.5A
Applications:	General Purpose
Series:	--
Technology:	Power MOSFET
Interface:	Serial
Output Configuration:	Half Bridge (8)
Function:	Driver - Fully Integrated, Control and Power Stage
Motor Type - AC, DC:	Brushed DC
Motor Type - Stepper:	Bipolar
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The MC34920EIR2 is a high performance motor control integrated circuit (IC) developed by High Performance Electronics (HPE). This device is designed to provide motor control in systems such as motor and fan controllers, robots, vehicles, home appliances and industrial machinery. The MC34920EIR2 is a full bridge motor controller that utilizes hard and soft switching techniques for improved efficiency and maximum power performance. It contains a low resistance power MOSFET H-bridge driver, as well as integrated electronic protection and control circuitry.

Features

The MC34920EIR2 is designed to control brush and brushless DC motors, and is designed to provide precision motor control with all the amenities required to handle a variety of motor control applications. It features a wide voltage range, an adjustable voltage reference,programmable current limitation, adjustable speed control and a tachometer input. It is also highly configurable, allowing the user to select various configurations and performance characteristics. It also features on-board current and voltage sensing, along with a built-in error detection circuit.

MC34920EIR2 Application Fields

The MC34920EIR2 is predominantly used in fan and motor control applications. It can also be used in a wide range of other applications, including variable speed control systems, servo motors, robotic systems, and industrial automation. Its on-board circuitry and sensor inputs make it an ideal choice for these types of applications.

MC34920EIR2 Working Principle

The MC34920EIR2 is designed to provide motor control through a Current Programmed Mode (CPM) control. This means that the motor is driven with a fixed current according to the programmed output parameters. The MC34920EIR2 uses an on-board comparator and peak current limitation circuit to control the motor\'s current. This current limitation is further enforced through the addition of a 4th order low pass filter. The MC34920EIR2 also features a hysteretic switching technique, which reduces switching losses and noise while providing improved efficiency.The MC34920EIR2 also features an adjustable speed control circuit with a 25-bit pulse width modulation (PWM) system. This allows for precise speed control and precise motor control. The speed can be adjusted from zero to a maximum level, and the PWM resolution allows for a wide range of speeds to be encountered.The MC34920EIR2 also features a tachometer input for precise speed measurement. The tachometer input is programmable with various options, allowing the user to select the best option for their application.

Conclusion

The MC34920EIR2 is a high performance motor control IC, designed to provide precise motor control in a variety of applications. Its low resistance power MOSFET H-bridge driver, integrated protection and control circuitry, variable speed control and tachometer input make it an ideal choice for motor and fan control. Its CPM control and hysteretic switching make it highly efficient, and its programmable output parameters allow for maximum flexibility and performance.

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