tb6641fg TOSHIBA Semiconductor CORPORATION, tb6641fg Datasheet
tb6641fg
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tb6641fg Summary of contents
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... TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic Full-Bridge DC Motor Driver IC The TB6641FG is a full-bridge DC motor driver with MOS output transistors. The low ON-resistance MOS process and PWM control enables driving DC motors with high thermal efficiency. Four operating modes are selectable via IN1 and IN2: clockwise (CW), counterclockwise (CCW), Short Brake and Stop ...
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... Toshiba does not grant any license to any industrial property rights by providing these examples of application circuits. VREG 5 V regulator UVLO ALERT IN1 Control IN2 PWM OSC 1/10 VREF OSC SGND 1000pF VSD TSD ISD detection Predriver ISD detection ISD Level Time 0.4 V (typ.) TISD 2 TB6641FG VM ISD detection OUT1 Motor OUT2 ISD detection RSGND 2011-06-21 ...
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... Pin Assignment (top view VREF PWM TISD ALERT OSC 1 2 Functional Description 14 13 VREG FIN IN1 SGND FIN TB6641FG N.C. OUT2 N.C. IN2 N.C. OUT1 RSGND 2011-06-21 ...
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... OSC frequency VREF pin input voltage PWM frequency Output current Note 25C, the TB6641FG is mounted on the PCB (70 × 70 × 1.6 (mm), double-sided, Cu thickness: 50 m, Cu dimension: 67%). *: The average output current shall be increased or decreased depending on usage conditions such as ambient temperature and IC mounting method). Use the average output current so that the junction temperature of 150°C (T current rating of 4.5 A are not exceeded. (Note) (Ta = 25° ...
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... L (L) OUT ( ( (LO) ALERT 5 (LE) ALERT I OSC Vvreg VREG= - 5mA 100 125 150 5 TB6641FG Min Typ. Max 3 3 3 2 5.5 0 0.8 0.4 50 1 100 1 ...
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... PWM constant-current control. OSC (2) The oscillation frequency of the oscillator is approximated by the following formula: fosc = 0.42/(Cosc [F] × 10 Regulator output pin VREG (13) 5V(typ.) I/O Signal IN1 (IN2) VREF [Hz] (typ.) 6 TB6641FG I/O Internal Circuit 10 k (typ.) PWM RSGND ALERT OSC VREG 2011-06-21 ...
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... The ALERT pin behaves as an open-drain output and provides a high-impedance state on output being pulled resistor externally wired. The output is Low when the TB6641FG performs a normal operation (in which state the operational mode is selectable through the IN1 pin and IN2 pin among CW, CCW, Short Brake and Stop modes.). ...
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... Overvoltage Shutdown Circuit (VSD) The TB6641FG incorporates an overvoltage shutdown circuit. If the supply voltage exceeds 53 V (typ.), all the outputs are turned off (Hi-Z). The VSD circuit has a hysteresis (typ.); the TB6641FG resumes the normal operation (typ.). VSD operation 53 V (typ (typ ...
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... The TB6641FG incorporates a thermal shutdown circuit. If the junction temperature (T (typ.), all the outputs are turned off (Hi-Z). Driving both the IN1 pin and IN2 pin Low allows a release of the shutdown operation; the TB6641FG resumes the normal operation. TSD = 170°C (typ.) TSD operation 170° ...
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... The detection time threshold is controllable through the external resistor of the TISD pin. Driving both the IN1 pin and IN2 pin Low allows a release of the shutdown operations; the TB6641FG resumes the normal operation. ...
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... It is also possible to control the motor rotation speed by sending in the PWM signal through not the PWM pin but the IN1 and IN2 pins. When the motor drive is controlled by the PWM input, the TB6641FG repeats operating in Normal Operation mode and Short Brake mode alternately. ...
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... The switching characteristics of the output transistors of the OUT1 and OUT2 pins are as shown below: Characteristic Value t 650 (typ.) pLH t 450 (typ.) pHL t 90 (typ 130 (typ.) f PWM input (IN1, IN2) Output voltage (OUT1, OUT2) Unit ns t pLH t pHL 90% 90% 50% 50% 10 TB6641FG 10% 2011-06-21 ...
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... V (typ.). The subsequent control of the RSGND is the same as the ISD circuit. The ALERT pin is also driven High. However, when the IN1 and IN2 pins are pulled Low, the ALERT pin is pulled Low and the TB6641FG resumes the normal operation. ...
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... Operation on change of predetermined current value (when in Discharge mode) The TB6641FG enters Discharge mode as V then transits to Charge mode after four internal clocks. However the TB6641FG goes back to Discharge mode then the TB6641FG enters Charge mode and stays until V OSC Internal CLK VREF/10 ...
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... Package Dimensions Weight: 0.5 g (typ.) 15 TB6641FG 2011-06-21 ...
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... Otherwise, the current or power consumption may exceed the absolute maximum rating, and exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result injury by explosion or combustion. In addition, do not use any device that is applied the current with inserting in the wrong orientation or incorrectly even just one time. 16 TB6641FG 2011-06-21 ...
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... If the current sink capability of the power supply is small, the device’s motor power supply and output pins might be exposed to conditions beyond maximum ratings. To avoid this problem, take the effect of back-EMF into consideration in system design. 17 TB6641FG ) at any time j 2011-06-21 ...
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... Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product. Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. TOSHIBA assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 18 TB6641FG 2011-06-21 ...