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L6258EA Arkusz danych(PDF) 1 Page - STMicroelectronics |
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L6258EA Arkusz danych(HTML) 1 Page - STMicroelectronics |
1 / 32 page December 2007 Rev 5 1/32 1 L6258EA PWM controlled high current DMOS universal motor driver Features ■ Able to drive both windings of a bipolar stepper motor or two DC motors ■ Output current up to 1.5A each winding ■ Wide voltage range: 12V to 40V ■ Four quadrant current control, ideal for microstepping and dc motor control ■ Precision PWM control ■ No need for recirculation diodes ■ TTL/CMOS compatible inputs ■ Cross conduction protection ■ Thermal shutdow ■ Extended low operating temperature range: -40°C Description L6258EA is a dual full bridge for motor control applications realized in BCD technology, with the capability of driving both windings of a bipolar stepper motor or bidirectionally control two DC motors. L6258EA and a few external components form a complete control and drive circuit. It has high efficiency phase shift chopping that allows a very low current ripple at the lowest current control levels, and makes this device ideal for steppers as well as for DC motors. The power stage is a dual DMOS full bridge capable of sustaining up to 40V, and includes the diodes for current recirculation.The output current capability is 1.5A per winding in continuous mode, with peak start-up current up to 2A. A thermal protection circuitry disables the outputs if the chip temperature exceeds the safe limits. PowerSO36 Table 1. Device summary Order code Package Packing E-L6258EA PowerSO36 Tube www.st.com |
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