| 摘要 |
An improved motor driver circuit comprises a firmware adapted to provide digital control signals, a digital-to-analog converter coupled to sa id firmware to receive the digital control signals for generating a reference voltage at an output, a compare circuit having a first input coupled to the output of said digital-to-analog converter, a second input coupled to a sens e circuit for receiving a sense voltage and an output, and a switch circuit coupled in series to said sense circuit wherein said compare circuit compare s the reference voltage and the sense to generate a compare voltage at the output to be fed into said switch circuit for directing the switch circuit t o conduct or not to conduct a drive current flowing through said switch circui t and said sense circuit.
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