mlx90401 Melexis Company, mlx90401 Datasheet
mlx90401
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mlx90401 Summary of contents
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... Undervoltage lockout • Qualified for automotive applications Package Code DF (300” SOIC24) 2 General description The MLX90401 is a three-phase brushless DC motor controller, designed to meet the needs of 24 high volume, low cost motors with 60 23 electrical sensor phasing which do not require ...
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... Table of content 1 Pin configuration ..........................................................................................................1 2 General description ......................................................................................................1 3 Glossary of terms .........................................................................................................3 4 Pin definitions and description....................................................................................3 5 Absolute maximum ratings ..........................................................................................4 6 MLX90401 electrical specifications .............................................................................4 7 General description ......................................................................................................5 7.1 Overview .............................................................................................................................................. 5 7.2 Block diagram ...................................................................................................................................... 6 7.3 Commutation decoding and output control logic.................................................................................. 7 7.4 Oscillator .............................................................................................................................................. 7 7.5 Disable ................................................................................................................................................. 7 7.6 Pulse width modulation ........................................................................................................................ 8 7.7 Drive outputs ........................................................................................................................................ 8 7 ...
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... FET Drain, and the Phase C output. Three push-pull drivers for direct drive of top power switch transistors. Positive supply of the top drive circuitry. The boost capacitor is connected between this pin and Feedback. Table 1: Pin definitions and description Page MLX90401 Data sheet Oct/05 ...
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... Absolute maximum ratings Supply Voltage, V Output Voltage on pins Gate & Cap Boost Voltage on Pins 17,18,20,21,23,24 Power Dissipation, P Operating Temperature Range, T Storage Temperature Range MLX90401 electrical specifications DC Operating Parameters T = -40 A Parameter. Symbol Supply voltage Supply current Output voltage Output current Undervoltage Oscillator frequency ...
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... Using a bootstrap/charge pump combination, the MLX90401 also generates a boost voltage to drive the top power FET. In this way the application only uses N-channel power FETS, to reduce overall system cost. ...
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... Rev 005 Brushless DC Motor Controller 12V Regulator (To Boost) VREG(internal) UVLO Note: only one channel shown Charge Pump Shifter Chop Output Control Logic Figure 2 : Block diagram Page MLX90401 V (2) REF Cap Boost (18,21,24) Level GT (17,20,23) FB (16,19,22) GB (13,14,15) PWR GND (12) 5V 3.5KΩ Hall A (3) 5V 3.5KΩ ...
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... Disable has a higher priority than /Brake. If for instance Disable is active, braking will not have any effect. If /Brake is active at the moment that Disable is made active, all braking will be stopped. 3901090401 Rev 005 Brushless DC Motor Controller ). Capacitor C is charged from the Reference Output (Pin 2) OSC Page MLX90401 OSC Data sheet Oct/05 ...
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... FETs are driven properly at all time. 3901090401 Rev 005 Brushless DC Motor Controller PWM Timing Diagram (note 1) Input Osc Figure 3: PWM timing diagram Page MLX90401 becomes OSC Data sheet Oct/05 ...
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... Should the voltage level undervoltage condition disappears, to prevent improper drive of the power FETs. 7.9 Logic table Following table shows the output state in function of the inputs. It summarizes the different functions of the MLX90401 Hall Sensor input A, … Sensor Electrical Phasing Motor position 60° ...
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... MLX90401. DZ1 prevents this. Its voltage specification should be chosen a few volt above the maximum rating of the power supply, but obviously not higher than the absolute maximum rating of the MLX90401. It should be a high power device since it has to absorb a lot of energy in a short time. ...
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... Bootstrap capacitors up to 100nF can be applied. 9.2 Motor Noise The MLX90401 defines its switching sequence based on the Hall input sequence and the state of the 60°/120° Select Input. A 120° electrical sensor phasing motor operated with a 60° setting will most likely function, but will generate clearly audible noise. Vice versa a 60° ...
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... Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. 12 FAQ Consult the Application Note concerning the EVB90401 MLX90401 Evaluation Board for more information. It can be obtained from www.melexis.com. 13 Package Information The MLX90401 will be assembled in a plastic wide body SOIC24 package. ...
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... Or for additional information contact Melexis Direct: Europe and Japan: E-mail: sales_europe@melexis.com 3901090401 Rev 005 Brushless DC Motor Controller www.melexis.com All other locations: Phone: +32 1367 0495 Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com Page MLX90401 ISO/TS 16949 and ISO14001 Certified Data sheet Oct/05 ...