OM9373 International Rectifier Corp., OM9373 Datasheet
OM9373
Related parts for OM9373
OM9373 Summary of contents
Page 1
... Brushless DC Motor Controller / Driver Module in a Power Flatpack Description: The OM9373 is one of a series of versatile, integrated three-phase brushless DC motor controller/driver subsystems housed pin power flatpack. The OM9373 is best used as a two quadrant speed controller for controlling/driving fans, pumps, and motors in applications which require small size ...
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... OM9373 Absolute Maximum Ratings Parameter Motor Supply Voltage Peak Motor Supply Voltage Average Phase Output Current Peak Phase Output Current Control Supply Voltage Logic Input Voltage (Note 1) Reference Source Current Error Amplifier Input Voltage Range Error Amplifier Output Current Spare Amplifier Input Voltage ...
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... V(pin 3) = V(pin < Vcommon-mode < 3. V(pin V(pin 12) = V(pin 13 V(pin 12) = V(pin 13 V(pin 12) = 0V, V(pin 13) Varied Threshold Note V(pin 12) = 0.3V, V(pin 13) = 0. V(pin 12) = V(pin 13) = 0.3V OM9373 Min. Typ. Max. Units - - 250 0.024 Ohms - - 100 0 200 100 mA 9 ...
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... OM9373 Electrical Characteristics - Parameter Logic Input Section H1, H2, H3 Low Voltage Threshold H1, H2, H3 High Voltage Threshold H1, H2, H3 Input Current Quad Select / Direction Threshold Voltage Quad Select Voltage Hysteresis Direction Voltage Hysteresis Quad Select Input Current Direction Input Current Overvoltage / Coast Input Section ...
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... APPLICATIONS Start-Up Conditions The OM9373 3-phase brushless DC motor controller/ driver is designed to drive fractional to integral horsepower motors. To ensure proper operation necessary to ensure that the high-side bootstrap capcitors are charged during initial start-up. However, the method(s) used to ensure this may be dependant upon the application. For example, some applications ...
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... Figure 2 also shows the implementation of the cycle-by-cycle current limit/overcurrent protection feature of the OM9373. The load current is monitored red via the controller’s internal sense resistor. The current sense signal is filtered and fed into the current rent sense amplifier where the absolute value of ISH-ISL is multiplied by two and biased ...
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... The current sense signal is filtered and fed into the current sense amplifier where the absolute value of ISH-ISL is multiplied by two and biased up by 2.5V. Besides the implementation of the cycle-by- cycle current limit/overcurrent protection feature of the OM9373 discussed in the preceding paragraph, the Fig 3: Implementation of a Current-Mode Controller CURRENT_COMMAND +15V 10uF + 3 ...
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... OM9373 Simplified Block Diagram 8 www.irf.com ...
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... Pin Descriptions / Functionality VCC (Pin 1) -- The Vcc Supply input provides bias voltage to all of the internal control electronics within the OM9373, and should be connected to a nominal +15Vdc power source. High frequency bypass capacitors (10uF polarized in parallel with 0.1uF ceramic are recommended) should be connected as close as possible to pin 1 and Ground (pin 19). ERROR AMPLIFIER (EA1- Input, Pin 2 ...
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... OM9373 QUAD SELECT INPUT (Pin 14) -- This input is used to set the OM9373 in a half control or full control chopping regime. When driven with a logic low level, the OM9373 is in the half control mode, whereby only the three lower (pull-down) power switches associated with the Phase Outputs are allowed to chop. Alternately, ...
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... SOURCE (Pins 29, 34, 35, 39 and 40) - The source pins form the low-side connection of the pull-down switches associated with each Phase Output. Because of the switching current capability of the OM9373, all 5 pins should be externally connected together with a low impedance bus to minimize losses and voltage differentials. Also, due to layout design considerations, pin 29 is internally connected to the " ...
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... Source via the pull-down driver, depending upon the Hall-Effect and Direction Inputs (see Commutation Truth Table). The two pins associated with each Phase Output must be connected to one of the three phases of the motor driven by the OM9373. V (Pins 33, 38, and 43) - These pins are MOTOR connected to the most positive terminal of the motor supply (Vm+) ...
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... Package and Screening Options The OM9373 is offered in F-43, a hermetic flatpack package as well as in MP3-43L, a plastic ring frame, low profile flatpack package. The hermetic version is offered in two standard screening levels: a full military temperature range of -55°C to +125°C with limited screening and with ...
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... OM9373 Mechanical Outline - F-43 ( OM9373SF ) Mechanical Outline - MP3-43L ( OM9373SP ) IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 IR LEOMINSTER: 205 Crawford St., Leominster, Massachusetts 01453, USA Tel: (978) 534-5776 14 a Pin 1 Pin 43 Pin 26 a Pin 1 Pin 43 Pin 26 Visit us at www.irf.com for sales contact information. ...