За управление на DC и стъпкови мотори - LMD18245 3A, 55V DMOS Full-Bridge Motor Driver

LMD18245  3A, 55V DMOS Full-Bridge Motor Driver 
За управление на DC  и стъпкови мотори

 National Semiconductor - LMD18245  3A, 55V DMOS
Драйвери за управление на DC и стъпкови мотори
Цена на дребно: 40 лв
Описание и технически параметри на линка LMD18245

Features

   DMOS power stage rated at 55V and 3A continuous

   Low R_DS(ON) of typically 0.3Ω per power switch

   Internal clamp diodes

   Low-loss current sensing method

   Digital or analog control of motor current

   TTL and CMOS compatible inputs

   Thermal shutdown (outputs off) at T_J = 155°C

   Overcurrent protection

   No shoot-through currents

   15-lead TO-220 molded power package 

Description

The LMD18245 full-bridge power amplifier incorporates all the circuit blocks required to drive and control current in a brushed type DC motor or one phase of a bipolar stepper motor. The multi-technology process used to build the device combines bipolar and CMOS control and protection circuitry with DMOS power switches on the same monolithic structure. The LMD18245 controls the motor current via a fixed off-time chopper technique.

An all DMOS H-bridge power stage delivers continuous output currents up to 3A (6A peak) at supply voltages up to 55V. The DMOS power switches feature low R_DS(ON) for high efficiency, and a diode intrinsic to the DMOS body structure eliminates the discrete diodes typically required to clamp bipolar power stages.

An innovative current sensing method eliminates the power loss associated with a sense resistor in series with the motor. A four-bit digital-to-analog converter (DAC) provides a digital path for controlling the motor current, and, by extension, simplifies implementation of full, half and microstep stepper motor drives. For higher resolution applications, an external DAC can be used.

Applications

Full, half and microstep stepper motor drives

Stepper motor and brushed DC motor servo drives

Automated factory, medical and office equipment

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За управление на DC и стъпкови мотори - LMD18201 3-Amp, 55 Volt H-Bridge

LMD18201  3-Amp, 55 Volt  H-Bridge   За управление на DC  и стъпкови мотори

 National Semiconductor - LMD18201  3-Amp, 55 Volt  H-Bridge
Драйвери за управление на DC и стъпкови мотори
Цена на дребно: 40 лв
Описание и технически параметри на линка LMD18201

Features

    Delivers up to 3A continuous output

    Operates at supply voltages up to 55V

    Low R_DS(ON) typically 0.33Ω per switch at 3A

    TTL and CMOS compatible inputs

    No “shoot-through” current

    Thermal warning flag output at 145°C

    Thermal shutdown (outputs off) at 170°C

    Internal clamp diodes

    Shorted load protection

    Internal charge pump with external bootstrap capability 

Description

The LMD18201 is a 3A H-Bridge designed for motion control applications. The device is built using a multi-technology process which combines bipolar and CMOS control circuitry with DMOS power devices on the same monolithic structure. The H-Bridge configuration is ideal for driving DC and stepper motors. The LMD18201 accommodates peak output currents up to 6A. Current sensing can be achieved via a small sense resistor connected in series with the power ground lead. For current sensing without disturbing the path of current to the load, the LMD18200 is recommended.

Applications

    DC and stepper motor drives

    Position and velocity servomechanisms

    Factory automation robots

    Numerically controlled machinery

    Computer printers and plotters

More Application Notes

	AN-828: Application Note 828 Increasing the High Speed Torque of Bipolar Stepper Motors
	AN-694: Application Note 694 A DMOS 3A, 55V, H-Bridge: The LMD18200

Продажба и доставка на електронни елементи, директни доставки от производители.
За проверка на складови наличности и поръчки пишете на e-mail: plovdiv.services@gmail.com

Sales and supply of electronic components, supplies direct from manufacturers.

e-mail: plovdiv.services@gmail.com

Нови интегрални схеми и цени на линка :  National Semiconductor