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AN2738 Datasheet(PDF) 22 Page - STMicroelectronics |
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AN2738 Datasheet(HTML) 22 Page - STMicroelectronics |
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22 / 54 page  Application example AN2738 22/54 Doc ID 14589 Rev 2 place each one very close to the SD input pin of each IC. This capacitance and, in general, each capacitance indicated in the schematic must be placed as close as possible to the IC in order to guarantee a good noise filtering action. Figure 19. Typical application schematic of a 3-phase FOC In the example of Figure 19 the logic inputs HIN and LIN are connected together, using just one single signal to drive each L6390. In Figure 20 a special focus on a single gate driver circuit of the 3-phase L6390 scheme is provided. HIN LIN HVG OUT LVG VBOOT OP+ OP- GND OPOUT SD/OD DT CP+ VCC + + - L6390 HIN LIN HVG OUT LVG VBOOT OP+ OP- GND OPOUT SD/OD DT CP+ VCC + + - L6390 + HIN LIN HVG OUT LVG VBOOT OP+ OP- GND OPOUT SD/OD DT CP+ VCC + + - L6390 3.3V 3-phase MOTOR H.V. VCC H.V. H.V. VCC VCC U1 U2 U3 SD IN3 IN2 IN1 A1 A2 A3 CONTROLLER ADC |
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