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| 飞思卡尔MC33927三相FET预驱动方案 | |||||
作者:飞思卡尔 文章来源:飞思卡尔 点击数: 更新时间:2007-12-5 ![]() |
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Freescale MC33927: Three-Phase Field Effect Transistor Pre-Driver The MC33927 is a Field Effect Transistor (FET) pre-driver designed for three-phase motor control and similar applications. The integrated circuit (IC) uses SMARTMOS technology. The IC contains three high-side FET pre-drivers and three low-side FET pre-drivers. Three external bootstrap capacitors provide gate charge to the high side FETs. The IC interfaces to a MCU via six direct input control signals, a SPI port for device setup and asynchronous reset, enable and interrupt signals. Both 5.0V and 3.0V logic level inputs are accepted and 5.0V logic level outputs are provided. 特性: Fully specified from 8.0V to 40V covers 12V and 24V automotive systems Extended operating range from 6.0V to 58V covers 12V and 42V systems 1.0A gate drive capability with protection Protection against reverse charge injection from CGD and CGS of external FETs Includes a charge pump to support full FET drive at low battery voltages Deadtime is programmable via the SPI port Simultaneous output capability enabled via safe SPI command INTERNAL BLOCK DIAGRAM ![]() 图1.MC33927 方框图. >http://www.freescale.com/files/analog/doc/data_sheet/MC33927.pdf?pspll=1 |
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