DRV8844EVM

TEXAS INSTRUMENTS  DRV8844EVM  评估模块, DRV8844评估EVM

The is an Evaluation Module for evaluate the operation and performance of DRV8844, a medium voltage quadruple half-H-bridge driver. The DRV8844 is designed to drive four independent inductive or resistive loads, such as solenoids, relays or lamps. The board can also drive two brushed DC motors or either unipolar or bipolar stepper motor not requiring integrated current regulation. The board houses an MSP430 microcontroller and USB interface chip. The USB chip allows for serial communications from a PC computer where a Windows® application schedules serial commands. These commands can control each of the devices signals or control both devices at the same time to drive a stepper motor. The microcontroller firmware offers the generation of all the control signals often employed to enable or disable the power stage and four PWM"s to articulate each power output with a configurable duty cycle.

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8 to 60V Supply voltage range

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Supports up to ±30V split supplies

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2.5A Peak/1.75A continuous output per H-bridge

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Outputs can be paralleled for higher output current or better thermal performance

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PWM control interface with independent enables

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Floating control inputs isolates system controller from driver