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AN4243 Datasheet(PDF) 2 Page - STMicroelectronics |
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AN4243 Datasheet(HTML) 2 Page - STMicroelectronics |
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2 / 29 page ![]() Contents AN4243 2/29 Doc ID 024199 Rev 1 Contents 1 L6230 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Designing an application with the L6230 . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Current ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Voltage ratings and operating range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 Choosing the bulk capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.4 Layout considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.5 Sensing resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.6 Charge pump external components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.7 Sharing the charge pump circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.8 How to generate a reference voltage for the current control . . . . . . . . . . 12 2.9 Input logic pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.10 Overcurrent protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.11 Thermal management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.12 Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.1 Field oriented control driving method . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.2 Six-step driving method with current control . . . . . . . . . . . . . . . . . . . . . . 23 3.3 Six-step driving method with BEMF zero crossing detection . . . . . . . . . . 24 4 Demonstration boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.1 EVAL6230QR demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.2 STEVAL-IFN003V1:PMSM FOC motor driver based on the L6230 and STM32F103 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.3 STEVAL-IFN004V1:BLDC six-step motor driver based on the L6230 and STM8S105 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 |
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