m56755afp Mitsumi Electronics, Corp., m56755afp Datasheet
m56755afp
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m56755afp Summary of contents
Page 1
... M56755AFP has a both (forward and reverse) motor torque control by the motor speed control terminal. M56755AFP has the several braking mode that an user can flexibly select in order to generate the reverse torque. Also, this device includes a bias circuit for Hall Sensor, a current limit circuit and a thermal shut down function ...
Page 2
... Free Air Free Air M56755AFP SPINDLE MOTOR DRIVER Function Hu+ Sensor amp. input Hu- Sensor amp. input Hv+ Sensor amp. input Hv- Sensor amp. input Hw+ Sensor amp. input Hw- Sensor amp. input GND Hall amplifier sensitivity select ...
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... Input voltage range [3.3V DSP available] 16 pin Input voltage range [3.3V DSP available Gio / Rsense [A/V] Ilim = Vlim / Rsense [A] – pins input range 19 24 MODE4 = open – pins input signal 19 24 MODE4 = GND M56755AFP SPINDLE MOTOR DRIVER Units Limits Units Typ. Min. Max. — 0 100 A — ...
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... The relationship between the EC (control voltage), ECR (reference voltage) and the EC - ECR torque is as shown in Figure 1. The current gain is 0.6A/V (at sensing resistor: 0.5ohm) in the both torques and a dead zone is 0mV to 0 – -40mV 40mV. Current limit M56755AFP SPINDLE MOTOR DRIVER Limits Units Min. Typ. Max. 0.6 0.85 1 ...
Page 5
... Also, the IC bias current wil be a slight current (please make reference the electrical characteristics). At the same time, the hall bias output will be cut off. When the goes high, the all of circuits will be available. M56755AFP SPINDLE MOTOR DRIVER U Outer loator ...
Page 6
... Hv-] timming. The FG pin is pulled- OPEN or HIGH AUTOMATIC STOP Figure 6. Hu+ Hu- Hv+ Hv- Hw Hall sensor-amp EC-ECR Hw+ Hu+ REVERSE Hv+ Comparator High RDS Low High FG Low M56755AFP SPINDLE MOTOR DRIVER 1 by internal resistor [typ. 10Kohm]. CC MODE3 GND UN-AUTOMATIC (NON-STOP) Hw- ...
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... HIGH MODE2 LOW MODE1 LOW ALL BRAKING SHORT MODE BRAKING +1A MOTOR CURRENT FORWARD CURRENT REVERSE TORQUE CURRENT MOTOR STOP -1A (Vbemf-Vd-Vsat M56755AFP SPINDLE MOTOR DRIVER REVERSE BRAKING +600mA -600mA MOTOR STOP Vd ; diode voltage Vsat ; npn transistor saturation voltage Ra ; motor inner resistance ...
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... Load current (mA) 2=6V,Vm=5V,V =5V 0.29 0.35 0.47 This device can use this voltage value due to motor drive. 0.49 0.38 0.32 600 800 Load current (mA) M56755AFP SPINDLE MOTOR DRIVER 12V 5V Top side saturation voltage 1.05 1.18 0.76 0.62 Bottom side saturation voltage 1000 1200 Top side 0.62 saturation voltage ...
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... HB terminal voltage and Hall current characteristics. (Condition : V 1.6 1.4 1.2 1.0 0.85 0.8 0.6 0.4 0 THERMAL DERATING 6.0 (W) 5.0 4.5 4.0 3.0 2.0 1.2 1 Ambient Temperature (Ta) MITSUBISHI <CONTROL / DRIVER IC> Hall current (mA) With infinite heatsink Without heatsink 75 100 125 150 ( C) M56755AFP SPINDLE MOTOR DRIVER = 4.4V – 7V) 50 ...
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... Hall bias resistance 104 Control PWM1 Reference PWM2 MITSUBISHI <CONTROL / DRIVER IC> SPINDLE MOTOR DRIVER com control BRAKING MODE SELECT 0 to 1.5 10uF + + - Motor current sense resistor 0 and M56755AFP 12V Motor power supply 104 104 104 Start / Stop 5V Power Supply 10uF ...