OM9375 International Rectifier Corp., OM9375 Datasheet
OM9375
Related parts for OM9375
OM9375 Summary of contents
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... DESCRIPTION The OM9375 is one of a series of versatile, integrated three-phase brushless DC motor controller/driver subsystems housed pin power flatpack. The OM9375 is best used as a two quadrant speed controller for controlling/driving fans, pumps, and motors in applications which require small size. Many integral control features provide the user much flexibility in adapting the OM9375 to specific system requirements ...
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... OM9375 COMMUTATION TRUTH TABLE This table shows the Phase Output state versus the state of the Hall-Effect and Direction Inputs. Please note that the OM9375 Hall-Effect Inputs are Grey-encoded; that is, only one input is allowed to change from one input state to another at a time. ...
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... Vdc m O (Note 15Vdc ±10 0.8 Vdc (max 2.0 Vdc (min) 2 0.35°C/W (Tcase = 25° C) OM9375 ...
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... OM9375 V ...
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... OM9375 Parameter Symbol Soft-Start Section Soft-Start Pull-Up Current Soft-Start Discharge Current Soft-Start Reset Threshold Voltage Tachometer/Brake Section Tachometer Output High Level Voh Tachometer Output Low Level Tachometer On-Time Tachometer On-Time Variation Brake/Tach Timing Input Current Brake/Tach Timing Threshold Voltage Brake/Tach Timing ...
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... Phase Outputs are allowed to chop. Alternately, when driven with a logic high level, the OM9375 is in the full control mode, where all six power switches (pull-up and pull- down) associated with the Phase Outputs are chopped by the PWM ...
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... GROUND (Pin 19) -- The voltages that control the OM9375 are referenced with respect to this pin. All bypass capacitors, timing resistors and capacitors, loop compensation components, and the Hall-effect filter capacitors must be referenced as close as possible to pin 19 for proper circuit operation ...
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... MOTOR RETURN (Pins 27 and 28) - These pins are connected to the most negative terminal of the motor supply (Vm-). This connection is electrically isolated from the logic Ground internal to the OM9375 package to minimize, if not eliminate, noise on the logic ground. The connection to the logic ground is made by the user external to the package (refer to Ground (pin 19)) ...
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... Figure 4 also shows the implementation of the cycle- For example, by-cycle current limit/overcurrent protection feature of the OM9375. The load current is monitored via the controller’s internal sense resistor. The current sense signal is filtered and fed into the current sense amplifier is applied, ...
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... DIA. .125 TYP. Fig 1: Mechanical Outline F-43 Hermetic Package Fig 2: Mechanical Outline MP3-43L Plastic Ring Frame Package 2.100 1.860 .128 DIA. 4 HOLES 1.600 .250 .250 TYP. TYP. • Pin1 .130 REF. .500 .750 .050 2 OM9375 2. .150 Tol. Non-Cumulative .350 .040 DIA. ...
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... TACH_OUT 16 BRAKE .1uF 17 OV_COAST 18 SOFT_START 19 GROUND 20 H3_HALL_INPUT 21 H2_HALL_INPUT 22 H1_HALL_INPUT 23 SPEED_IN 24 DIRECTION 25 CSH 26 CSL 232 232 2 V_MOTOR 42 PHASE_A_OUT 41 PHASE_A_OUT C_BUS C_FILT + 40 SOURCE_A 39 SOURCE_A 38 V_MOTOR 37 PHASE_B_OUT 36 PHASE_B_OUT 35 SOURCE_B 34 SOURCE_B 33 V_MOTOR 32 PHASE_C_OUT 31 PHASE_C_OUT 30 N/C 29 SOURCE_C 28 MOTOR_RETURN HALL SENSORS 27 MOTOR_RETURN OM9375 V_MOTOR MOTOR ...
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... GROUND 20 H3_HALL_INPUT 21 H2_HALL_INPUT 22 H1_HALL_INPUT 23 SPEED_IN 24 DIRECTION 25 CSH 26 CSL 232 232 Visit Our Web Site at www.omnirel.com 2 V_MOTOR 42 PHASE_A_OUT 41 PHASE_A_OUT C_BUS + 40 SOURCE_A 39 SOURCE_A 38 V_MOTOR 37 PHASE_B_OUT 36 PHASE_B_OUT 35 SOURCE_B 34 SOURCE_B 33 V_MOTOR 32 PHASE_C_OUT 31 PHASE_C_OUT 30 N/C 29 SOURCE_C 28 MOTOR_RETURN HALL SENSORS 27 MOTOR_RETURN OM9375 V_MOTOR C_FILT MOTOR ...