ZHCSIK4B January 2017 – November 2018 DRV8886AT
PRODUCTION DATA.
在 H 桥接通电流后，电流检测比较器将在启用电流检测电路前被忽略一段时间 (tBLANK)。消隐时间还将设置 PWM 的最小驱动时间。Table 7 显示了基于正弦表指数和转矩 DAC 设置的消隐时间。在 AutoTune 电流调节模式下，消隐时间固定为 1.0µs。请注意，转矩 DAC 指数与 Table 3 中给出的每步进数据不同。
| tblank = 1.5µs | tblank = 1.0µs |
| 正弦指数 | 转矩 DAC (TRQ) | ||
|---|---|---|---|
| 100% | 75% | 50% | |
| 16 | 100% | 75% | 50% |
| 15 | 98% | 73.5 | 49% |
| 14 | 96% | 72% | 48% |
| 13 | 92% | 69% | 46% |
| 12 | 88% | 66% | 44% |
| 11 | 83% | 62.3% | 41.5% |
| 10 | 77% | 57.8% | 38.5% |
| 9 | 71% | 53.3% | 35.5% |
| 8 | 63% | 47.3% | 31.5% |
| 7 | 56% | 42% | 28% |
| 6 | 47% | 35.3 | 23.5% |
| 5 | 38% | 28.5 | 19% |
| 4 | 29% | 21.8% | 14.5% |
| 3 | 20% | 15% | 10% |
| 2 | 10% | 7.5% | 5% |
| 1 | 0% | 0% | 0% |