TB6569FTG,8,EL

TB6569FG/FTG TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic TB6569FG/FTG Full-Bridge DC Motor Driver IC The TB6569FG/FTG 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. Features • Power supply voltage : 50 V (max) • Output current : 4.5 A (max) • Direct PWM control • PWM constasnt-current control • CW/CCW/Short Brake/Stop modes • Overcurrent shutdown circuit (ISD) • Overcurrent detection threshold control • Overcurrent detection time control • Overvoltage shutdown circuit (VSD) • Thermal shutdown circuit (TSD) • Undervoltage lockout circuit (UVLO) • Dead time for preventing shoot-through current TB6569FG:Weight: 0.5 g (typ.) P-VQFN32-0505-0.50-002 TB6569FTG:Weight: 0.07 g (typ.) 1 2014-12-8 TB6569FG/FTG Block Diagram (application circuit example) The application circuits shown in this document are provided for reference purposes only. Thorough evaluation is required, especially at the mass production design stage. Toshiba does not grant any license to any industrial property rights by providing these examples of application circuits. VM 5 V regulator UVLO ALERT VSD TSD ISD detection ISD detection OUT1 IN1 Control Motor Predriver IN2 OUT2 ISD detection PWM ISD detection ISD OSC Level Time 0.4 V (typ.) 1/10 VREF SGND OSC TISD VISD 2 RSGND 2014-12-8 TB6569FG/FTG Pin Functions:TB6569FG Pin No. Pin Name Functional Description 1 ALERT 2 OSC Capacitor pin for controlling oscillation frequency for the PWM constant-current control 3 IN1 Control signal input pin 1 4 SGND 5 IN2 Control signal input pin 2 6 N.C. No-connect 7 OUT1 Output pin 1 8 RSGND 9 N.C. No-connect 10 OUT2 Output pin 2 11 N.C. No-connect Error detection output pin Small signal ground pin Power ground pin/ Detection resistor pin for PWM constant-current control 12 VM 13 VISD Resistor pin for overcurrent detection threshold control Power supply voltage pin 14 TISD Resistor pin for overcurrent detection time control 15 PWM PWM input pin 16 VREF Supply voltage pin for PWM constant-current control ― FIN Pin-fin heat sink (Note 1) Note 1: Since the pin-fin is provided for discharging heat, the thermal design must be considered on the PCB designing. (The fin is installed on the second surface of the chip and electrified; therefore it must be insulated or earthed to the ground.) Note 2: ESD test is not conducted on N.C.pins. Pin Assignment (top view):TB6569FG 16 15 14 13 12 11 10 9 VREF PWM TISD VISD FIN VM N.C. OUT2 N.C. ALERT OSC IN1 SGND FIN IN2 N.C. OUT1 RSGND 1 2 3 4 5 6 7 8 3 2014-12-8 TB6569FG/FTG Pin Functions:TB6569FTG Pin No. Pin Name Functional Description 1 OUT1 Output pin 1 2 OUT1 Output pin 1 3 N.C. No-connect 4 RSGND Power ground pin/ Detection resistor pin for PWM constant-current control 5 RSGND Power ground pin/ Detection resistor pin for PWM constant-current control 6 N.C. No-connect 7 OUT2 Output pin 2 8 OUT2 Output pin 2 9 N.C. No-connect 10 N.C. No-connect 11 VM Power supply voltage pin 12 VM Power supply voltage pin 13 N.C. No-connect 14 N.C. No-connect 15 VISD Resistor pin for overcurrent detection threshold control 16 N.C. No-connect 17 TISD Resistor pin for overcurrent detection time control 18 PWM PWM input pin 19 VREF Supply voltage pin for PWM constant-current control 20 N.C. No-connect 21 N.C. No-connect 22 ALERT 23 OSC Capacitor pin for controlling oscillation frequency for the PWM constant-current control 24 IN1 Control signal input pin 1 25 N.C. No-connect 26 SGND Small signal ground pin 27 SGND Small signal ground pin 28 N.C. No-connect 29 N.C. No-connect 30 N.C. No-connect 31 IN2 Control signal input pin 2 32 N.C. No-connect Error detection output pin Note 1: Design the pattern in consideration of the heat design because the back side has the role of heat radiation. (The back side should be connected to GND because it is connected to the back of the chip electrically.) Note 2: Though each OUT1, RSGND, OUT2, VM, and SGND has two pins, short out these two pins at the external IC respectively. Note 3: ESD test is not conducted on N.C.pins. 4 2014-12-8 TB6569FG/FTG Pin Assignment (top view):TB6569FTG NC 21 20 19 TISD NC 22 PWM ALERT 23 VREF OSC IN1 24 18 17 NC 25 16 NC SGND 26 15 VISD SGND 27 14 NC NC 28 13 NC NC 29 12 VM NC 30 11 VM IN2 31 10 NC NC 32 9 NC OUT1 OUT1 NC RSGND 5 5 6 7 8 OUT2 4 OUT2 3 NC 2 RSGND 1 2014-12-8 TB6569FG/FTG Absolute Maximum Ratings (Note) (Ta = 25°C) Characteristics Symbol Rating Unit Power supply voltage VM 50 V Output voltage VO 50 (Note 1) V Output current 1 IO peak1 4.5 (Note 2) A Output current 2 IO peak2 Input voltage 4.0 (Note 3) A VIN −0.3 to 5.5 V ALERT pin output voltage VALERT 5.5 V ALERT pin output current IALERT 5 mA Power dissipation(TB6569FG) PD1 0.89 (Note 4) W Power dissipation(TB6569FTG) PD2 3 (Note 5) W Operating temperature Topr −40 to 85 °C Storage temperature Tstg −55 to 150 °C Note: The absolute maximum ratings of a semiconductor device are a set of ratings that must not be exceeded, even for a moment. Do not exceed any of these ratings. Exceeding the rating (s) may cause the device breakdown, damage or deterioration, and may result injury by explosion or combustion. Please use the TB6569FG/FTG within the specified operating ranges. Note 1: OUT1, OUT2 Note 2: The absolute maximum output current rating of 4.5 A must be kept for OUT1 and OUT2 when VM ≤ 36 V. Note 3: The absolute maximum output current rating of 4.0 A must be kept for OUT1 and OUT2 when VM >36 V. Note 4: IC only Note 5: On the PCB (Four layer board is based on JEDEC standard.) Operating Ranges Characteristics Symbol Rating Unit Supply voltage VMopr 10 to 45 V OSC frequency fOSC Up to 500 kHz VREFopr 0 to 3.6 V fPWM Up to 100 kHz IO (Ave.) Up to 1.5 (Note 6) (given as a guide) A VREF pin input voltage PWM frequency Output current Note 6: 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 (Tj) and the absolute maximum output current rating of 4.5 A or 4.0 A are not exceeded. 6 2014-12-8 TB6569FG/FTG Electrical Characteristics (unless otherwise specified, Ta = 25°C, VM = 24 V) Characteristics Power supply voltage Input voltage Control circuit IN1 pin, Hysteresis voltage IN2 pin, PWM pin Input current VREF pin input current Constant-current control amplifier offset PWM frequency PWM minimum pulse width Output ON resistance OUT1 pin, OUT2 pin Output leakage current Diode forward voltage ALERT pin Symbol Test Condition Min Typ. Max ICC1 Stop mode ― 3 8 ICC2 CW/CCW mode ― 3 8 ICC3 Short Brake mode ― 3 8 VINH 2 ― 5.5 VINL 0 ― 0.8 Unit mA V ― 0.4 ― IINH VIN = 5 V ― 50 75 IINL VIN = 0 V ― ― 5 −3 ― 3 μA RSGND = VREF ― 1 ― mV Duty: 50 % ― 100 ― kHz fPWM (TW) (given as a guide only) 1 ― ― μs RON (U + L) IO = 3 A ― 0.55 0.9 Ω IL (U) VM = 50 V, VOUT = 0 V −2 ― ― IL (L) VM = VOUT = 50 V ― ― 2 VF (U) IO = 3 A ― 1.3 1.7 VF (L) IO = −3 A ― 1.3 1.7 VIN (HYS) IINVREF VOFFSET fPWM μA μA V Output fall time voltage VAL (LO) IALERT = 1 mA ― ― 0.4 V Output leakage current IAL (LE) VALERT = 5.5 V ― ― 2 μA 0.3 0.5 0.7 mA OSC charge/discharge current IOSC 7 2014-12-8 TB6569FG/FTG Thermal Performance Characteristics ・TB6569FG Thermal Resistance (rth) – Pulse Width (t) (1) On the PCB (60 × 30 × 1.6 (mm), Cu: more than 50%: Rth (j-a) = 89.3°C /W, PD = 1.4 W when Ta = 25°C (2) IC only: Rth (j-a) = 140°C/W, PD = 0.89 W when Ta = 25°C. 1.5 (1) 1.0 (2) 0.5 0 0 25 50 75 100 125 150 IC only Input Pulse On the PCB (60 × 30 × 1.6 (mm), Cu: more than 50%) Thermal resistance Power dissipation PD (W) P D – Ta Input width Ambient Temperature Ta (°C) ・TB6569FTG P D – Ta Power dissipation PD (W) (1) 3.0 (1) On the PCB (Four layer board is based on JEDEC standard.) Rth (j-a) = 41.3°C/W, PD = 3 W when Ta = 25°C 2.0 1.0 0 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) 8 2014-12-8 TB6569FG/FTG I/O Equivalent Circuits The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purposes. I/O Signal PWM (15) Digital input L: 0.8 V (max) H: 2 V (min) IN1 (IN2) 10 kΩ (typ.) 100 kΩ (typ.) IN1 (3) IN2 (5) Digital input L: 0.8 V (max) H: 2 V (min) I/O Internal Circuit PWM 100 kΩ (typ.) Pin name (Pin No.:TB6569FG) VREF VREF (16) Analog input Input range: 0 V to 3.6 V RSGND ALERT (1) OSC (2) Open-drain output An externally attached pull-up resistor enables the High output. H (High-impedance): Abnormal operation (When the UVLO, TSD, VSD and/or ISD is activated) L: Normal operation ALERT The pin connects a capacitor for controlling the oscillation frequency used in the PWM constant-current control. The oscillation frequency of the oscillator is approximated by the following formula: OSC 3 fOSC = 0.42/(COSC [F] × 10 ) = [Hz] (typ.) VISD (13) The pin connects a resistor controlling overcurrent detection threshold. 9 VISD 2014-12-8 TB6569FG/FTG Pin name (Pin No.:TB6569FG) I/O Signal I/O Internal Circuit The pin connects a resistor controlling overcurrent detection time. TISD (14) TISD VM The RSGND pin must be connected to a resistor for detection when it is used in the PWM constant-current control; it must be earthed to the ground, otherwise. Utmost care must be taken for designing the pin-arrangement pattern because a large current flows through these pins. OUT1 (7) OUT2 (10) RSGND (8) OUT1 (OUT2) RSGND 0.4 V (typ.) Functional Description The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purposes. Timing charts may be simplified for explanatory purposes. 1. Input/Output Functions Input IN1 IN2 H H L H H L L L Output PWM OUT1 OUT2 H L L L L L H L H CW/CCW L L L Short brake H H L CCW/CW L L L Short brake H OFF (Hi-Z) L Mode Short brake Stop (a release of TSD and/or ISD) 2. Protective Operation Alert Output (ALERT) The ALERT pin behaves as an open-drain output and provides a high-impedance state on output being pulled up by a resistor externally wired. The output is Low when the TB6569FG/FTG 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.). In any other cases (in which state the thermal shutdown circuit (TSD), overcurrent shutdown circuit (ISD), overvoltage shutdown circuit (VSD) and/or undervoltage lockout (UVLO) is activated), the output is High. Driving both the IN1 pin and IN2 pin Low allows a release of the shutdown operations; the TB6569FG/FTG resumes the normal operations. 10 2014-12-8 TB6569FG/FTG 3. Undervoltage Lockout Circuit (UVLO) The TB6569FG/FTG incorporates an undervoltage lockout circuit. When the supply voltage drops under 8 V (typ.), all the outputs are turned off (Hi-Z). The UVLO circuit has a hysteresis of 0.7 V (typ.); the TB6569FG/FTG resumes the normal operation at 8.7 V (typ.). UVLO operation 8.7 V (typ.) VM voltage 8.0 V (typ.) UVLO operation UVLO internal signal H L ALERT output H L OUT1, OUT2 H L Normal operation OFF (Hi-Z) Normal operation 4. Overvoltage Shutdown Circuit (VSD) The TB6569FG/FTG 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 of 3 V (typ.); the TB6569FG/FTG resumes the normal operation at 50 V (typ.). VSD operation VM voltage 53 V (typ.) 50 V (typ.) VSD operation VSD internal signal H L ALERT output H L OUT1, OUT2 H L Normal operation OFF (Hi-Z) Normal operation Note: The VSD circuit is activated if the absolute maximum voltage rating is violated. Note that the circuit is provided as an auxiliary only and does not necessarily provide the IC with a perfect protection from any kind of damages. 11 2014-12-8 TB6569FG/FTG 5. Thermal Shutdown Circuit (TSD) The TB6569FG/FTG incorporates a thermal shutdown circuit. If the junction temperature (Tj) exceeds 170°C (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 TB6569FG/FTG resumes the normal operation. TSD = 170°C (typ.) TSD operation 170°C (typ.) TSD operation Chip temperature junction temperature (Tj) Internal TSD signal H L H ALERT output L IN1, IN2 input OUT1, OUT2 H More than 1 μs (typ.) L H L Normal operation OFF (Hi-Z) Normal operation Note: The TSD circuit is activated if the absolute maximum junction temperature rating (Tj) of 150°C is violated. Note that the circuit is provided as an auxiliary only and does not necessarily provide the IC with a perfect protection from any kind of damages. 12 2014-12-8 TB6569FG/FTG 6. Overcurrent Shutdown Circuit (ISD) The TB6569FG/FTG incorporates overcurrent shutdown (ISD) circuits monitoring the current that flows through each of all the four output power transistors. The detection time threshold is programmable through the VISD pin with a pull-up resistor. If the overcurrent flowing through any one of the ISD circuit flows beyond the detected time threshold, all the outputs are turned off (Hi-Z). 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 TB6569FG/FTG resumes the normal operation. • Detection current threshold of the external resistor, R1, of the VISD pin 10 kΩ: 6.3 A (typ.) 20 kΩ: 4.2A (typ.) 30 kΩ: 3.1 A (typ.) • Detection time threshold of the external resistor, R2, of the TISD pin 10 kΩ: 1.6 μs (typ.) 20 kΩ: 2.8 μs (typ.) 100 kΩ: 12.4 μs (typ.) IC VISD pin TISD pin R2 R1 ISD operation Predefined VISD value Output current 0 T: Predefined TISD value Internal ISD signal H L ALERT output H L IN1, IN2 input H More than 1 μs (typ.) L OUT1, OUT2 Normal operation OFF (Hi-Z) Normal operation Note: The ISD circuit is activated if the absolute maximum current rating is violated. Note that the circuit is provided as an auxiliary only and does not necessarily provide the IC with a perfect protection from damages due to overcurrent caused by power fault, ground fault, load-short and the like. 13 2014-12-8 TB6569FG/FTG 7. Direct PWM Control The motor rotation speed is controllable by the PWM input sent through the PWM pin. 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 TB6569FG/FTG repeats operating in Normal Operation mode and Short Brake mode alternately. For preventing the shoot-through current in the output circuit caused by the upper and lower power transistors being turned on simultaneously, the dead time is internally generated at the time the upper and lower power transistors switches between on and off. This eliminates the need of inserting Off time externally; thus the PWM control with synchronous rectification is enabled. Note that inserting Off time externally is not required on operation mode changes between CW and CCW, and CW (CCW) and Short Brake, again, because of the dead time generated internally. VM OUT1 VM M OUT1 VM M OUT1 GND M GND PWM ON t1 GND PWM ON → OFF t2 = 200 ns (typ.) PWM OFF t3 VM OUT1 VM M OUT1 M GND GND PWM OFF → ON t4 = 500 ns (typ.) PWM ON t5 VM Output voltage waveform (OUT1) t5 t1 t3 RSGND t4 t2 14 2014-12-8 TB6569FG/FTG 8. Output Circuit The switching characteristics of the output transistors of the OUT1 and OUT2 pins are as shown below: Characteristic Value tpLH 650 (typ.) tpHL 450 (typ.) tr 90 (typ.) tf 130 (typ.) Unit ns PWM input (IN1, IN2) tpLH Output voltage (OUT1, OUT2) tpHL 90% 90% 50% 50% 10% 10% tr tf 15 2014-12-8 TB6569FG/FTG 9. PWM Constant-Current Control The TB6569FG/FTG uses a peak current detection technique to keep the output current constant by applying constant voltage through the VREF pin. When running in Discharge mode, the TB6569FG/FTG powers the motor to operate in Short Brake mode. (1) PWM constant-current control programming The peak current upon the constant-current operation is determined by applying voltage on the VREF pin. The peak current value is calculated by the following equation: IO = VREF/R × 1/10 [A] The PWM current-constant frequency is also programmable by using the capacitor of the OSC pin. The oscillation frequency is approximated by using the following equation: fOSC = 0.42/(COSC [F] × 103) = [Hz] (typ.) For preventing the overvoltage on connecting a detection resistor, the RSGND pin is driven High (the outputs are turned off (Hi-Z)) when the applied voltage is over 0.4 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 TB6569FG/FTG resumes the normal operation. It is recommended to use a detection resistor of over 0.1 Ω for the RSGND pin. VM Control circuit ISD Control circuit OUT1 Control circuit OUT2 M IO OSC 0.4 V (typ.) RSGND OSC R 1/10 VREF Analog input voltage IO 16 2014-12-8 TB6569FG/FTG (2) Constant-current chopping The TB6569FG/FTG enters Discharge mode when VRSGND reaches the predetermined voltage (VREF/10). After a lapse of four internal clocks generated by the OSC signal, the TB6569FG/FTG shifts to Charge mode. Coil current VREF/10 VRSGND OSC Internal CLK VREF/10 Coil current VRSGND Discharge Charge Discharge GND 17 2014-12-8 TB6569FG/FTG (3) Operation on change of predetermined current value (when in Discharge mode) The TB6569FG/FTG enters Discharge mode as VRSGND reaches the predetermined voltage (VREF/10) and then transits to Charge mode after four internal clocks. However, if VRSGND > VREF/10 at the time, the TB6569FG/FTG goes back to Discharge mode. If VRSGND > VREF/10 after another four internal clocks, then the TB6569FG/FTG enters Charge mode and stays until VRSGND reaches VREF/10. OSC Internal CLK VREF/10 Coil current Discharge Discharge Charge Charge GND 2.4 μs (typ.) (4) Operation on change of predetermined current value (when in Charge mode) Even though VREF reaches the predetermined current value, Discharge mode continues for four internal clocks after that. And then Charge mode is entered. OSC Internal CLK VREF/10 VRSGND Coil current Discharge Charge Discharge GND Due to the peak current detection technique, the average current value of the constant-current operation shall be smaller than the predetermined value. Because this depends on characteristics of used motor coils, precise identification of the used motor coils must be performed when determining the current value. When both the PWM constant-current control and the direct PWM control (applying the PWM input on the PWM pin, or on the IN1 and IN2 pins), Short Brake mode is preferentially selected. 18 2014-12-8 TB6569FG/FTG Package Dimensions TB6569FG Weight: 0.5 g (typ.) 19 2014-12-8 TB6569FG/FTG TB6569FTG P-VQFN32-0505-0.50-002 Unit: mm Weight: 0.07 g (typ.) 20 2014-12-8 TB6569FG/FTG Notes on Contents 1. Block Diagrams Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for explanatory purposes. 2. Equivalent Circuits The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purposes. 3. Timing Charts Timing charts may be simplified for explanatory purposes. 4. Application Circuits The application circuits shown in this document are provided for reference purposes only. Thorough evaluation is required, especially at the mass production design stage. Toshiba does not grant any license to any industrial property rights by providing these examples of application circuits. 5. Test Circuits Components in the test circuits are used only to obtain and confirm the device characteristics. These components and circuits are not guaranteed to prevent malfunction or failure from occurring in the application equipment. IC Usage Considerations Notes on Handling of ICs (1) The absolute maximum ratings of a semiconductor device are a set of ratings that must not be exceeded, even for a moment. Do not exceed any of these ratings. Exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result injury by explosion or combustion. (2) Use an appropriate power supply fuse to ensure that a large current does not continuously flow in case of over current and/or IC failure. The IC will fully break down when used under conditions that exceed its absolute maximum ratings, when the wiring is routed improperly or when an abnormal pulse noise occurs from the wiring or load, causing a large current to continuously flow and the breakdown can lead smoke or ignition. To minimize the effects of the flow of a large current in case of breakdown, appropriate settings, such as fuse capacity, fusing time and insertion circuit location, are required. (3) If your design includes an inductive load such as a motor coil, incorporate a protection circuit into the design to prevent device malfunction or breakdown caused by the current resulting from the inrush current at power ON or the negative current resulting from the back electromotive force at power OFF. IC breakdown may cause injury, smoke or ignition. Use a stable power supply with ICs with built-in protection functions. If the power supply is unstable, the protection function may not operate, causing IC breakdown. IC breakdown may cause injury, smoke or ignition. (4) Do not insert devices in the wrong orientation or incorrectly. Make sure that the positive and negative terminals of power supplies are connected properly. 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. 21 2014-12-8 TB6569FG/FTG Points to Remember on Handling of ICs (1) Over Current Protection Circuit Over current protection circuits (referred to as current limiter circuits) do not necessarily protect ICs under all circumstances. If the Over current protection circuits operate against the over current, clear the over current status immediately. Depending on the method of use and usage conditions, such as exceeding absolute maximum ratings can cause the over current protection circuit to not operate properly or IC breakdown before operation. In addition, depending on the method of use and usage conditions, if over current continues to flow for a long time after operation, the IC may generate heat resulting in breakdown. (2) Thermal Shutdown Circuit Thermal shutdown circuits do not necessarily protect ICs under all circumstances. If the thermal shutdown circuits operate against the over temperature, clear the heat generation status immediately. Depending on the method of use and usage conditions, such as exceeding absolute maximum ratings can cause the thermal shutdown circuit to not operate properly or IC breakdown before operation. (3) Heat Radiation Design In using an IC with large current flow such as power amp, regulator or driver, please design the device so that heat is appropriately radiated, not to exceed the specified junction temperature (Tj) at any time and condition. These ICs generate heat even during normal use. An inadequate IC heat radiation design can lead to decrease in IC life, deterioration of IC characteristics or IC breakdown. In addition, please design the device taking into considerate the effect of IC heat radiation with peripheral components. (4) Back-EMF When a motor rotates in the reverse direction, stops or slows down abruptly, a current flow back to the motor’s power supply due to the effect of back-EMF. 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 absolute maximum ratings. To avoid this problem, take the effect of back-EMF into consideration in system design. 22 2014-12-8 TB6569FG/FTG RESTRICTIONS ON PRODUCT USE • Toshiba Corporation, and its subsidiaries and affiliates (collectively "TOSHIBA"), reserve the right to make changes to the information in this document, and related hardware, software and systems (collectively "Product") without notice. • This document and any information herein may not be reproduced without prior written permission from TOSHIBA. Even with TOSHIBA's written permission, reproduction is permissible only if reproduction is without alteration/omission. • Though TOSHIBA works continually to improve Product's quality and reliability, Product can malfunction or fail. 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