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L99DZ120 データシート(PDF) 85 Page - STMicroelectronics |
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L99DZ120 データシート(HTML) 85 Page - STMicroelectronics |
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85 / 161 page  DS11567 Rev 5 85/161 L99DZ120 Application information 160 Figure 36. Overcurrent recovery mode 4.23 H-bridge control The PWMH and DIRH inputs control the drivers of the external H-bridge transistors. In single Motor mode the motor direction can be chosen with the direction input (DIRH), the duty cycle(a) and frequency with the PWMH input (single mode). With the SPI bits SD (CR 10) and SDS (CR 10) four different slow-decay modes (via drivers and via diode) can be selected using the high-side or the low-side transistors. Unconnected inputs are defined by internal pull-down current. a. If tccp is programmed to 4 µs and frequency to 50 kHz, max duty cycle achievable is 92%. |
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