OM9371 International Rectifier Corp., OM9371 Datasheet
OM9371
Related parts for OM9371
OM9371 Summary of contents
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... DESCRIPTION The OM9371 is one of a series of versatile, integrated three-phase brushless DC motor controller/driver subsystems housed pin power flatpack. The OM9371 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 OM9371 to specific system requirements ...
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... OM9371 COMMUTATION TRUTH TABLE This table shows the Phase Output state versus the state of the Hall-Effect and Direction Inputs. Please note that the OM9371 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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... Note 1: Logic Inputs: Direction, Hall Inputs (H1...H3) Overvoltage - Coast, Speed, and Quad Select. Note 2: The internal 5mΩ current sense resistor is limited to 6 Wdc power dissipation. Other values are available. Please contact the factory for more information Vdc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Amperes DC Amperes Peak 0.55°C/W jc (Tcase = 25° Vdc m O (Note 2) 2 OM9371 ...
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... Ohms 100 nA 0 nSec 100 4.9 5.0 5.1 V 4.7 5.0 5.3 V --- --- 100 150 mA - - -320 0 uA +/-2 +/-12 uA 0.20 0.26 V 0.30 0. 1.95 2.15 V/V 2.4 2.5 2.65 V 0.8 1.0 1.2 V 1.6 1.9 2.0 V -250 -120 uA 0.8 1.4 2 0.6 V -30 50 150 uA - 1.75 1.85 V 1.65 1.75 V 0.10 0. OM9371 ...
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... OM9371 Parameter Symbol Soft-Start Section Soft-Start Pull-Up Current Ip Soft-Start Discharge Current Id Soft-Start Reset Threshold Voltage Vth Tachometer/Brake Section Tachometer Output High Level Voh Tachometer Output Low Level Vol Tachometer On-Time ton Tachometer On-Time Variation -- Brake/Tach Timing Input Current Iin Brake/Tach Timing ...
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... Phase Outputs are allowed to chop. Alternately, when driven with a logic high level, the OM9371 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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... The Brake / Tach Timing Input has another function. If this pin is pulled below the brake threshold voltage, the OM9371 will enter the brake mode. The brake mode is defined as the disabling of all three high-side (pull-up) drivers associated with the Phase Outputs, and the enabling of all three low-side (pull-down) drivers ...
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... V motor minimize parasitic effects. PACKAGE AND SCREENING OPTIONS The OM9371 is offered in a hermetic flatpack package as well as a plastic ring frame, low profile flatpack package. The hermetic package, F-43, is shown in To Figure 1. The plastic ring frame, low profile package, MP3-43L, has slightly larger dimensions and is shown in Figure 2 ...
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... Figure 4 also shows the implementation of the cycle- For example, by-cycle current limit/overcurrent protection feature of the OM9371. 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. 1.600 4 HOLES .250 .250 TYP. TYP. • Pin1 16 x .150 Tol. Non-Cumulative .130 REF. .500 .750 .040 DIA. .050 2 OM9371 2.40 .350 ...
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... QUAD_SEL SOURCE_B 10k 15 TACH_OUT SOURCE_B 16 BRAKE .1uF 17 OV_COAST V_MOTOR 18 SOFT_START 19 GROUND PHASE_C_OUT 20 H3_HALL_INPUT PHASE_C_OUT 21 H2_HALL_INPUT 22 H1_HALL_INPUT N/C 23 SPEED_IN SOURCE_C 24 DIRECTION 25 CSH MOTOR_RETURN 26 CSL MOTOR_RETURN 232 232 2 OM9371 43 V_MOTOR 42 41 C_BUS C_FILT + MOTOR HALL SENSORS 27 ...
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... GROUND 20 H3_HALL_INPUT 21 H2_HALL_INPUT 22 H1_HALL_INPUT 23 SPEED_IN 24 DIRECTION 25 CSH MOTOR_RETURN 26 CSL MOTOR_RETURN 232 232 Visit Our Web Site at www.omnirel.com 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 HALL SENSORS 27 OM9371 V_MOTOR MOTOR ...