|
Analog & Interface Products
Motor Drivers
Stepper and DC Motor Drivers
Microchip offers devices to drive bipolar stepper motors, or bidirectional control of two DC motors. These devices are
The main features of this family of products are:
- Able to drive both windings of a bipolar stepper motor, or bidirectional control of 2 DC motors
- Load voltage supply range: 10V to 40V
- Output current up to 750mA (each bridge)
- Internal fixed 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
Three-Phase BLDC Fan Motor Controllers
Microchip also offers a family of sensorless sinusoidal drivers for three-phase BLDC fan motors. This family of fan controllers can be interfaced with any microcontroller by using a simple PWM, or can also be used stand alone by the application.
Main features of this family:
- Sensorless Three Phase Brushless DC drivers (no Hall-effect sensor required)
- 180° sinusoidal drive, for high efficiency and low acoustic noise
- Supports 2V to 14V power supplies (MTD6501C/D/G) or 2V to 5.5V (MTD6502B and MTD6505)
- Speed control through power supply modulation (PSM) and/or pulse-width modulation (PWM)
- Direction control pin (MTD6502B and MTD6505)
- Resistor programmable BEMF coefficient (MTD6505)
- 20 kHz PWM output frequency (MTD6501C/D); 23 kHz PWM output frequency (MTD6501G)
- Motor speed output (FG)
- Lockup protection and automatic recovery circuit (no external capacitor required)
- Over-current Limit, short circuit and over-temperature protection
|
