Addressing the issues of power-on interference pulses and dV/dt noise in gate drivers for brushless direct current motors,a high-reliability,low-power gate driver with a certain degree of dV/dt noise immunity was designed. The implemented circuit employs a high-side PMOS architecture,ensuring sufficient dead-time by feeding back the gate voltage to two sets of latches. An SR latch incorporating intentional skew design was implemented and combined with the preceding logic stage to suppress dV/dt-induced noise. In the level-shifting circuit,both current mirror and capacitive coupling structures were used to achieve voltage feedback from the high side to the low side while adaptively adjusting the input narrow pulse width. The addition of a power-on detection module resolves interference pulses generated during initial power-on,enhancing robustness and reducing power consumption. The proposed gate driver was fabricated in a 0.25 μm process and operates with a supply voltage range of 30V to 60V. At 25 ℃ in the typical process corner,aminimized dead time of approximately 12ns is achieved while driving a 1A current-capable power stage with a multi-stage buffer,ensuring dead-time sufficiency is maintained.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |