電子專業(yè)畢業(yè)設(shè)計(jì)論文外文文獻(xiàn)及翻譯-全雙橋電機(jī)保護(hù)驅(qū)動(dòng)器a3976(已修改)
2025-05-31 20:53 本頁面
【正文】 中文 2723字 外文文獻(xiàn) （一）原文 DUAL FULL BRIDGE PROTECTED MOTOR DRIVER（ A3976） The A3976 is designed to drive both windings of a bipolar stepper motor or bidirectionally control two DC Motors. Both HBridges are capable of continuous output currents of up to +/ 500 mA and operating voltages to 30V. Free wheeling, substrate isolated diodes are included for output transient suppression when switching motors or other inductive loads. For each bridge the PHASE input controls load current polarity by selecting the appropriate source and sink driver pair. The ENABLE input, when held high, enables the respective output Hbridge. When both ENABLE pins are held low the device will enter SLEEP mode and consume less than 100mA. The 3976 is protected to ensure safe operation in harsh operating environments and was designed specifically for automotive applications. Protection circuitry will check for open or shorted load, motor lead short to ground or supply, VBB overvoltage, VCC undervoltage, and thermal shutdown. If any of these conditions are detected the outputs will be disabled and fault information will be output to diagnostic pins FAULT1 and FAULT2. The 3976 is supplied in a choice of two power packages, a 16lead plastic DIP with a copper batwing tab (suffix ‘B’), and a 24lead plastic SOIC with a copper batwing tab (suffix ‘LB’). In both cases, the power tab is at ground potential and needs no electrical isolation. FEATURES （ 1） 30 V , 177。500 mA Continuous Output Rating （ 2） 35V Load Dump Survival （ 3） Output Short Circuit Protection （ 4） Coded Fault Diagnostic Outputs （ 5） Low Current Standby Mode （ 6） Open Load Monitor （ 7） Low Current Standby Mode （ 8） VBB Over Voltage Shutdown （ 9） Internal Thermal Shutdown Circuitry （ 10） Internal Low Parasitic Free Wheeling Diodes （ 11） Crossover Current Protection ABSOLUTE MAXIMUM RATINGS at TA = +25176。C Operating Supply Voltage, VBB .................... 30 V NonOperating Supply Voltage..................... 35 V Output Current, IOUT ............................177。500 mA* Logic Supply Voltage, VCC.......................... V Fault Output Voltage ................................... V Logic Input Voltage Range, VIN.......................... V to VCC + V Package Power Dissipation (TA = +25176。C), PD A3976KLB.................................. W A3976KB .................................... W Operating Temperature Range, TA ..............................40176。C to +125176。C Junction Temperature, TJ .........................+150176。C Storage Temperature Range, TS...............................55176。C to +150176。C * Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified current rating or a
畢業(yè)設(shè)計(jì)相關(guān)推薦
鄂ICP備17016276號(hào)-1