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数据搜索系统，热门电子元器件搜索 |
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ST7MC1 数据表(PDF) 146 Page - STMicroelectronics |
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ST7MC1 数据表(HTML) 146 Page - STMicroelectronics |
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146 / 308 page  ST7MC1/ST7MC2 146/308 MOTOR CONTROLLER (Cont’d) Figure 77. Simplified MTC Block Diagram MCIA MCIB MCIC BEMF=0 MCO5 MCO4 MCO3 MCO2 MCO1 MCO0 TIMER DELAY = WEIGHT x Zn MCCFI0 MCCREF NMCES DELAY =? CAPTURE Zn COMMUTE [C] MEASUREMENT WINDOW GENERATOR CURRENT VOLTAGE MODE Int/Ext WEIGHT (I) (V) (V) (I) R1 C (I) DELAY MANAGER CHANNEL BEMF ZERO-CROSSING DETECTOR PWM MANAGER [Z] (V) [Z] : Back EMF Zero-crossing event Zn : Time elapsed between two consecutive Z events [C] : Commutation event Cn : Time delayed after Z event to generate C event (I): Current mode (V): Voltage mode MTIM R2 VDD MANAGER 12-bit counter Phase U Phase W U, V, W Phases Phase U 1 Phase V PWM GENERATOR INPUT DETECTION 12-bit THREE-PHASE MCVREF OAP OAN MCPWMU MCPWMV MCPWMW (V) R3 PCN bit OAZ(MCCFI1) OAON bit + - CFAV bit ADC Encoder Unit TACHO or SPEED MEASURE UNIT (not represented) 1 |
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