ADM00308 MICROCHIP | Alldatasheet

Document overview

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Technical content

Features

■ 180° sinusoidal drive, for high efficiency and low acoustic noise ■ Position sensorless BLDC Motor Drivers (no hall-effect sensor required) ■ Integrated power transistors ■ Speed control through Power Supply Modulation (PSM) and/or Pulse-Width Modulation (PWM) ■ Built-in frequency generator (FG Output Signal) ■ Built-in lockup protection and automatic ■ Recovery circuit ■ Built-in overcurrent limitation ■ Built-in thermal shutdown protection ■ No external tuning required

Applications

■ 3-phase BLDC motors ■ 3-phase BLDC fans ■ Pumps; e.g. water pumps

Information subject to change. The Microchip name and logo, the Microchip logo, dsPIC, PIC are registered trademarks and MiWi, PICtail and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. DS22310B *DS22310B* Visit our web site for additional product information and to locate your local sales office. Microchip Technology Inc. • 2355 W. Chandler Blvd. • Chandler, AZ 85224-6199 www.microchip.com/analog Dual Full-Bridge Drivers The MTS2916A/MTS62C19A motor drivers are integrated circuit to drive both windings of a bipolar stepper motor or bi-directionally control of two DC motors. The two output bridges can sustain 40V and deliver up to 750 mA of continuous current each. The maximum output current, controlled by a PWM circuit, is determined by the user’s selection of a reference voltage, a sensing resistor and two logic inputs. The outputs have been optimized for a low output saturation voltage drop. ■ Load voltage supply range: 10V to 40V ■ Output current up to 750 mA (each bridge) ■ Internal fi xed Toff time PWM current control ■ Built-in protection diodes ■ Internal thermal shutdown ■ Under-voltage lockout ■ LS-TTL compatible logic inputs with pull-up resistors ■ Low Ron output resistance ■ Low quiescent current ■ Industry standard footprint Device Vmax IOUT Package Features MTS2916A 40V 750 mA SOIC-24 Selectable output current limit, Current direction control, Power bridge gate control, Current level control MTS62C19A 40V 750 mA SOIC-24 Selectable output current limit, Current direction control, Power bridge gate control, Current level control Development Tools MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board (ADM00345) MTS2916A Stepper Driver Evaluation Board (ADM00308)