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L8150 Datasheet(PDF) 1 Page - STMicroelectronics |
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L8150 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 37 page  March 2006 Rev 1 1/37 1 L8150 Brushless motor predriver Feature ■ Integrated Predriver IC for 3 phase BL motor. ■ Integrated Smooth driving concept with sinusoidal driving waveforms. ■ BCD5 technology 0.6mm. ■ Package: SO28. ■ Three Hall effects, differential input comparators. ■ Integrated Undervoltage lockout (VCC). ■ PWM output duty (voltage) control / Torque optimizer / protection functions ■ PWM carrier 17kHz min / integrated dead time Functions ■ C-MOS level predriver output (high active) ■ Free Run function ■ Dead time (3 values selectable) ■ Sinusoidal waveform PWM logic ■ Detected rotation speed (FG) output terminal ■ PWM duty control by analog input (KVAL control) ■ Forward/backward rotation input terminal (FR) / rotation direction detection output terminal (DM) ■ Thermistor connection terminal (thermal protection) ■ Torque optimizer terminal controlled by analog voltage input ■ V regulator output terminalExternal HVIC bootstrap capacitor pre-charge function ■ External HVIC bootstrap capacitor refresh function during 120 degree drive (rectangular drive). ■ This means both upper and lower chopping and low side current recirculation for rectangular drive. ■ Current limiter circuit ■ VCC lower voltage protection / VDC over voltage protection circuit / Hall sensor fail protection ■ FAULT signal output Description The L8150 device is a motor predriver intended to drive brushless fan motors with Hall effect sensors. The device, realized in BCD5 0.6mm mixed technology, is characterized by a mostly digital architecture assuring high integration density and high test coverage. The L8150 with few external components forms a complete control circuit, since the smooth driver logic is fully integrated: its peculiar driving solution (smooth driving) allows a very low current ripple and speed control even at low rotation speeds. Order codes SO28 Part number Temp range, °CPackage Packing E-L8150 -20 to 95 SO28 TUBE E-L8150TR -20 to 95 SO28 Tape & Reel www.st.com |
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