Shenzhen Meiyuxin Technology Co., Ltd. [driver distributor] imported original spot A4989SLDTR-T dual-channel full-bridge MOSFET driver quality assurance brand new original support third-party platform testing!

A4989SLDTR-T Product Description:

The A4989 is a dual full-bridge gate driver with an integrated microstepping converter suitable for driving a wide range of high power industrial bipolar two-phase stepper motors (typically 30 to 500 watts). Motor power is provided by an external N-channel power MOSFET with a supply voltage of 12 to 50 volts.

The device includes two sinusoidal DACs that generate reference voltages for two independent fixed off-time pulse-width modulated (PWM) current controllers. It also provides current regulation for an external power MOSFET full bridge.

Motor steps are controlled by a two-wire step and direction interface, providing complete microstepping control in full, 1/2, 1/4 and 1/16 step decompositions. The fixed off-time regulator is capable of operating in slow, mixed, or fast decay modes, and its operation reduces audible motor noise, increases step accuracy, and reduces power dissipation.

The converter is the key to the ease of implementation of this integrated circuit (IC). Just one pulse on the "step" input will drive the motor one step (full, 1/2, 1/4 or 1/16 step, depending on the microstep selection input.). There are no phase sequence tables, high frequency control lines or complicated interfaces in this program. This reduces the need for complex microcontrollers.

The supply voltage required for the above-mentioned high-side N-channel MOSFETs is provided through a bootstrap capacitor. Efficiency is improved by applying synchronous rectification, and integrated crossover control with programmable dead time keeps power FETs from shoot-through.

In addition, crossover current control and internal circuit protection prevent thermal shutdown and undervoltage protection caused by hysteresis. No special power-up sequencing is required.

This product is available in a 38-pin TSSOP (package LD) package. The package is lead-free with a 100% matte-tin leadframe

A4989SLDTR-T Features:

2-line step and direction interface

N-Channel MOSFET Dual Full-Bridge Gate Driver

Operates over a supply voltage range of 12 to 50 volts

Synchronous rectification

cross conduction protection

Adjustable mix decay

Integrated sinusoidal DAC current reference

Fixed Off-Time PWM Current Control

Better control of low currents during microstepping

Pin Compatible with A3986