BD6965NUX-TR

Datasheet DC Brushless Fan Motor Driver 5V Single-phase Full wave Fan motor driver BD6965NUX ●Description This is the summary of application for BD6965NUX that suit for notebook PC cooling fan motor. They employ Bi-CDMOS process and realize low ON resistance, low power consumption and quiet drive. ●Features
Small and thin package (VSON8 thickness:0.6mm)
BTL soft switching drive
PWM speed control
Low duty start up function
Quick start function
Stand-by function
Lock protection and auto restart (without external capacitor)
Rotating speed pulse signal (FG) output ●Package(s) VSON008X2030 ●Applications
Compact 5V fan such as notebook PC cooling fan W(Typ.) x D(Typ.) x H(Max.) 2.00mm x 3.00mm x 0.60mm VSON008X2030 ●Absolute maximum ratings Symbol Ratings Unit Supply voltage Vcc 7 V Power dissipation Pd 515* mW Operating temperature Topr -40 to +105 ℃ Storage temperature Tstg -55 to +150 ℃ Output voltage Vomax 7 V Output current Iomax 800** mA FG signal output voltage Vfg 7 V FG signal output current Ifg 10 mA Tjmax 150 ℃ Parameter Junction temperature * ** Reduce by 4.12mW/℃ over 25℃. (70.0mm×70.0mm×1.6mm glass epoxy board) This value is not to exceed Pd. ●Operating conditions Parameter Symbol Ratings Unit Operating supply voltage range Vcc 2.0 to 5.5 V Hall input voltage range Vh 0 to Vcc-1.1 V ○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays .www.rohm.com TSZ02201-0H1H0B100130-1-2 © 2012 ROHM Co., Ltd. All rights reserved. 1/12 TSZ22111・14・001 6.Jul.2012 Rev.001 Datasheet BD6965NUX ●Electrical characteristics (Unless otherwise specified Ta=25℃,Vcc=5V) Parameter Limits Symbol Min. Typ. Max. Unit Conditions Characteristics Circuit current 1 Icc1 1 3 6 mA PWM=OPEN Fig.1 Circuit current 2 (Stand-by mode) Icc2 80 115 160 µA PWM=GND Fig.2 Hall input offset Vhofs 0 - ±6 mV FG hysteresis voltage Vhys ±5 ±10 ±15 mV PWM input H level Vpwmh 2.5 - Vcc+0.3 V PWM input L level Vpwml -0.3 - 0.8 V Ipwmh - 0 5 µA PWM=Vcc Ipwml -33 -25 -17 µA PWM=GND Input frequency Fpwm 2 - 50 kHz Output voltage Vo - 0.4 0.6 V Input-output Gain Gio 42 44.6 46 dB FG low voltage Vfgl - - 0.4 V Ifg=5mA FG leak current Ifgl 0 - 10 µA Vfg=7V Lock detection ON time Ton 0.35 0.50 0.65 s Fig.8 Lock detection OFF time Toff 3.5 5.0 6.5 s Fig.9 Fig.3 PWM input current Io=250mA Upper and Lower total Fig.4,5 Fig.6 Fig.7 ●Truth table H+ H- PWM OUT1 OUT2 FG H L H(OPEN) H L H(Output Tr：OFF) L H H(OPEN) L H L(Output Tr：ON) H L L L L H(Output Tr：OFF) L H L L L L(Output Tr：ON) * FG=H in stand-by mode www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 2/12 TSZ02201-0H1H0B100130-1-2 6.Jul.2012 Rev.001 Datasheet BD6965NUX ●Reference Data 200.0 15 6.0 4.0 105℃ 2.0 25℃ -40℃ FGhysteresis hysteresisvoltage, voltage, Vhys[mV] Vhys[mV] FG 105℃ Circuit current,Icc[uA] Circuit current,Icc[mA] 8.0 150.0 100.0 105℃ 50.0 25℃ -40℃ Operating Voltage Range Operating Voltage Range 1 2 3 4 5 1 6 -40℃ 5 Operating Voltage Range 0 -5 -40℃ -10 105℃ 25℃ -15 0.0 0.0 25℃ 10 2 3 4 5 1 6 2 3 1.0 1.0 5 6 Fig.3 FG hysteresis voltage Fig.2 Circuit current 2 Fig.1 Circuit current 1 4 Supply voltage, Vcc[V] Supply voltage, Vcc[V] Supply voltage,Vcc[V] 200 105℃ 0.8 105℃ 0.6 25℃ -40℃ 0.4 0.2 25℃ Input -output Gain,Gio Output H voltage [V] Out put L voltage [V] 0.8 0.6 -40℃ 0.4 180 105℃ 25℃ -40℃ 160 140 0.2 Operating Voltage Range 0.0 120 0.0 0 0.2 0.4 0.6 0.8 0 0.2 Output current,Io[ A] 0.6 1 0.8 105℃ 25℃ 0.2 0.8 -40℃ 0.6 25℃ 105℃ 0.4 0.2 -40℃ 0.0 Operating Voltage Range 0.0 2 4 6 8 10 FG current , Ifg[mA] Fig.7 FG low voltage www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 5 6 10.0 Lock Toff[s] Lockdetection detectionOFF OFFtime, time.Toff[s] 0.4 Lock detection ON time, Ton[s] 0.6 4 Fig.6 Input-output Gain 1.0 0.8 3 Supply voltage, Vcc[ V] Fig.5 Output H voltage 1.0 0 2 Output current, Io[A] Fig.4 Output L voltage FG low voltage, Vfgl[V] 0.4 8.0 -40℃ 6.0 25℃ 105℃ 4.0 2.0 Operating Voltage Range 0.0 1 2 3 4 5 Supply voltage, Vcc[V] Fig.8 Lock detection ON time 3/12 6 1 2 3 4 5 6 Supply voltage, Vcc[V] Fig.9 Lock detection OFF time TSZ02201-0H1H0B100130-1-2 6.Jul.2012 Rev.001 Datasheet BD6965NUX ●Block diagram, application circuit, and pin assignment (Constant etc are for reference) Take a measure against Vcc voltage rise due to reverse connection of power supply and back electromotive force. P. 9 M OUT2 GND 1 8 Incorporates soft switching function. Adjust at an optimum value because gradient of switching of output waveform depends on hall element output. P. 5 Vcc 2 H+ 3 + OSC OUT1 Lock Protection + Vcc Control - 7 PWM 6 Speed c ontrol by PWM input is enabled. Input frequency must be 50kHz at the maximum. 。P. 7 500Ω to 1.5kΩ TSD HALL FG H- + 4 - 5 This is an open drain output. Connect a pull-up resistor. P. 10 OSC : Internal reference oscillation circuit TSD : Thermal shut down(heat rejection circuit) PIN No. Terminal name 1 OUT2 Motor output terminal 2 2 Vcc Power supply terminal 3 H+ Hall input terminal+ 4 H- Hall input terminal- 5 FG FG signal output terminal 6 PWM PWM signal input terminal 7 OUT1 Motor output terminal 1 8 GND GND terminal www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 Function 4/12 TSZ02201-0H1H0B100130-1-2 6.Jul.2012 Rev.001 Datasheet BD6965NUX ●Description of operations 1) Lock protection and automatic restart Motor rotation is detected by hall signal, and lock detection ON time (Ton) and lock detection OFF time (Toff) are set by IC internal counter. External part (C or R) is not required. Timing chart is shown in Fig.10. Idling H+ OUT1 Toff Ton Output Tr OFF ON OUT2 Depends on hall signal (L in this figure) FG Motor locking Lock detection Lock release Recovers normal operation Fig.10 Lock protection timing chart 2) Soft switching (silent drive setting) Input signal to hall amplifier is amplified to produce an output signal. When the hall element output signal is small, the gradient of switching of output waveform is gentle. When it is large, the gradient of switching of output waveform is steep. Enter an appropriate hall element output to IC where output waveform swings sufficiently. (H+)-(H-) OUT1 Fig.11 Relation between hall element output amplitude and output waveform www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 5/12 TSZ02201-0H1H0B100130-1-2 6.Jul.2012 Rev.001 Datasheet BD6965NUX 3) Hall input setting Hall input voltage range is shown in operating conditions. Vcc Hall input voltage range Vcc-1.1V GND Fig.12 Hall input voltage range Adjust the value of hall element bias resistor R1 in Fig.13 so that the input voltage of a hall amplifier is input in "hall input voltage range" including signal amplitude. ○Reducing the noise of hall signal Hall element may be affected by Vcc noise depending on the wiring pattern of board. In this case, place a capacitor like C1 in Fig.13. In addition, when wiring from the hall element output to IC hall input is long, noise may be loaded on wiring. In this case, place a capacitor like C2 in Fig.13. H- H+ Vcc C2 R1 C1 RH Hall bias current ＝ Vcc / (R1+RH) Hall element Fig.13 Application near of hall signal www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 6/12 TSZ02201-0H1H0B100130-1-2 6.Jul.2012 Rev.001 Datasheet BD6965NUX 4) PWM input Rotation speed of motor can be changed by controlling ON/OFF of the upper output depending on duty of the signal input to PWM terminal. H+ PWM OUT1 OUT2 FG Fig.14 Timing chart in PWM control When the voltage input to PWM terminal applies H logic : normal operation L logic : H side output is off When PWM terminal is open, H logic is applied. PWM terminal has hysteresis of 180mV (Typ.). 5) Quick start, stand-by function The quick start function is built into this IC. The function can start motor at once regardless of the detection time of the lock protection function when the PWM signal is input. Lock protection function is turned off when the time of PWM=L has elapsed more than 1ms in order to disable lock protection function when the motor is stopped by PWM signal. When H level duty of PWM input signal is close to 0%, lock protection function does not work at input frequency is slower than 1kHz, therefore enter a frequency faster than 2kHz. 6) Low duty start up function When turning on the power supply or returning from stand-by mode, output are driven in PWM operation during 60ms with 66kHz, 40% duty. It doesn’t depend on input PWM signal (except 0% duty). Even if input duty of PWM signal is low because of this function, the motor can be started. Vcc PWM OUT1 Low duty start up time Power ON Fig.15 Low duty start up function www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 7/12 TSZ02201-0H1H0B100130-1-2 6.Jul.2012 Rev.001 Datasheet BD6965NUX ●Equivalent circuit 1) Hall input terminal 2) Motor output terminal Vcc 1kΩ H+、HOUT1 1kΩ OUT2 GND 3) PWM signal input terminal 4) FG output terminal FG 180kΩ 20kΩ PWM www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 8/12 TSZ02201-0H1H0B100130-1-2 6.Jul.2012 Rev.001 Datasheet BD6965NUX ●Safety measure 1) Reverse connection protection diode Reverse connection of power results in IC destruction as shown in Fig.16. When reverse connection is possible, reverse connection protection diode must be added between power supply and Vcc. In normal energization Reverse power connection Vcc After reverse connection destruction prevention Vcc Vcc Circuit block Each pin Circuit block Each pin Circuit block GND Large current flows  Thermal destruction GND Internal circuit impedance high  amperage small Each pin GND No destruction Fig.16 Flow of current when power is connected reversely 2) Measure against Vcc voltage rise by back electromotive force Back electromotive force (Back EMF) generates regenerative current to power supply. However, when reverse connection protection diode is conected, Vcc voltage rises because the diode prevents current flow to power supply. ON ON ON Phase switching ON Fig.17 Vcc voltage rise by back electromotive force When the absolute maximum rated voltage may be exceeded due to voltage rise by back electromotive force, place (A) Capacitor or (B) Zener diode between Vcc and GND. If necessary, add both (C). (B) Zener diode (A) Capacitor ON ON ON ON (C) Capacitor and zenner diode ON ON Fig.18 Measure against Vcc voltage rise www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 9/12 TSZ02201-0H1H0B100130-1-2 6.Jul.2012 Rev.001 Datasheet BD6965NUX 3) Problem of GND line PWM switching Do not perform PWM switching of GND line because GND terminal potential cannot be kept to a minimum. Vcc Motor Driver M Controller GND PWM input Prohibited Fig.19 GND Line PWM switching prohibited 4) FG output FG output is an open collector and requires pull-up resistor. The IC can be protected by adding resistor R1. An excess of absolute maximum rating, when FG output terminal is directly connected to power supply, could damage the IC. Vcc Pull-up resistor FG Protection Resistor R1 Connector of board Fig.20 Protection of FG terminal ●Thermal derating curve Thermal derating curve indicates power that can be consumed by IC with reference to ambient temperature. Power that can be consumed by IC begins to attenuate at certain ambient temperature. This gradient is determined by thermal resistance θja. Thermal resistance θja depends on chip size, power consumption, package ambient temperature, packaging condition, wind velocity, etc., even when the same package is used. Thermal derating curve indicates a reference value measured at a specified condition. Fig.21 shows a thermal derating curve (Value when mounting FR4 glass epoxy board 70 [mm] x 70 [mm] x 1.6 [mm] (copper foil area below 3 [%])) Pd(mW) 700 600 515 500 400 300 200 100 0 25 50 75 100 105 125 150 Ta(℃) ＊ Reduce by 4.12 mW/℃ over 25℃. (70.0mm×70.0mm×1.6mm glass epoxy board) Fig.21 Thermal derating curve www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 10/12 TSZ02201-0H1H0B100130-1-2 6.Jul.2012 Rev.001 Datasheet BD6965NUX ●Notes for use 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 14) Absolute maximum ratings Devices may be destroyed when supply voltage or operating temperature exceeds the absolute maximum ratings. Because the cause of this damage cannot be identified as a short circuit or an open circuit, if any over rated values will expect to exceed the absolute maximum ratings, consider adding circuit protection devices, such as fuses. Connecting the power supply connector backward Connecting of the power supply in reverse polarity can damage IC. Take precautions when connecting the power supply lines. An external direction diode can be added. Power supply line Back electromotive force causes regenerated current to power supply line, therefore take a measure such as placing a capacitor between power supply and GND for routing regenerated current. And fully ensure that the capacitor characteristics have no problem before determine a capacitor value. (when applying electrolytic capacitors, capacitance characteristic values are reduced at low temperatures) GND potential It is possible that the motor output terminal may deflect below GND terminal because of influence by back electromotive force of motor. The potential of GND terminal must be minimum potential in all operating conditions, except that the levels of the motor outputs terminals are under GND level by the back electromotive force of the motor coil. Also ensure that all terminals except GND and motor output terminals do not fall below GND voltage including transient characteristics. Malfunction may possibly occur depending on use condition, environment, and property of individual motor. Please make fully confirmation that no problem is found on operation of IC. Thermal design Use a thermal design that allows for a sufficient margin in light of the power dissipation(Pd) in actual operating conditions. Inter-pin shorts and mounting errors Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any connection error or if pins are shorted together. Actions in strong electromagnetic field Use caution when using the IC in the presence of a strong electromagnetic field as doing so may cause the IC to malfunction. ASO When using the IC, set the output transistor so that it does not exceed absolute maximum rations or ASO. Thermal shut down circuit The IC incorporates a built-in thermal shutdown circuit (TSD circuit). Operation temperature is 175℃(typ.) and has a hysteresis width of 25℃(typ.). When IC chip temperature rises and TSD circuit works, the output terminal becomes an open state. TSD circuit is designed only to shut the IC off to prevent thermal runaway. It is not designed to protect the IC or guarantee its operation. Do not continue to use the IC after operation this circuit or use the IC in an environment where the operation of this circuit is assumed. Testing on application boards When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to stress. Always discharge capacitors after each process or step. Always turn the IC’s power supply off before connecting it to or removing it from a jig or fixture during the inspection process. Ground the IC during assembly steps as an antistatic measure. Use similar precaution when transporting or storing the IC. GND wiring pattern When using both small signal and large current GND patterns, it is recommended to isolate the two ground patterns, placing a single ground point at the ground potential of application so that the pattern wiring resistance and voltage variations caused by large currents do not cause variations in the small signal ground voltage. Be careful not to change the GND wiring pattern of any external components, either. Capacitor between output and GND When a large capacitor is connected between output and GND, if Vcc is shorted with 0V or GND for some cause, it is possible that the current charged in the capacitor may flow into the output resulting in destruction. Keep the capacitor between output and GND below 100uF. IC terminal input When Vcc voltage is not applied to IC, do not apply voltage to each input terminal. When voltage above Vcc or below GND is applied to the input terminal, parasitic element is actuated due to the structure of IC. Operation of parasitic element causes mutual interference between circuits, resulting in malfunction as well as destruction in the last. Do not use in a manner where parasitic element is actuated. In use We are sure that the example of application circuit is preferable, but please check the character further more in application to a part which requires high precision. In using the unit with external circuit constant changed, consider the variation of externally equipped parts and our IC including not only static character but also transient character and allow sufficient margin in determining. Status of this document The Japanese version of this document is formal specification. A customer may use this translation version only for a reference to help reading the formal version. If there are any differences in translation version of this document formal version takes priority www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 11/12 TSZ02201-0H1H0B100130-1-2 6.Jul.2012 Rev.001 Datasheet BD6965NUX ●Physical Dimension VSON008X2030 3.0±0.1 2.0±0.1 0.6MAX 1PIN MARK TR The direction is the 1pin of product is at the upper right when you hold ( reel on the left hand and you pull out the tape on the right hand ) (0.12) +0.03 0.02 −0.02 1.5±0.1 4000pcs 0.5 1 4 8 5 0.25 1.4±0.1 0.3±0.1 C0.25 Embossed carrier tape Quantity Direction of feed S 0.08 S Tape 1pin +0.05 0.25 −0.04 Reel (Unit : mm) Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. ●Marking Diagram VSON008X2030 (TOP VIEW) Ｄ６９ ６５ Lot No. 1PIN MARK www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 12/12 TSZ02201-0H1H0B100130-1-2 6.Jul.2012 Rev.001 Datasheet Notice Precaution on using ROHM Products 1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment, OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you (Note 1) , transport intend to use our Products in devices requiring extremely high reliability (such as medical equipment equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific Applications. 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The Products are not subject to radiation-proof design. 5. Please verify and confirm characteristics of the final or mounted products in using the Products. 6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied, confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect product performance and reliability. 7. De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual ambient temperature. 8. Confirm that operation temperature is within the specified range described in the product specification. 9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in this document. Precaution for Mounting / Circuit board design 1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2. In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Notice - GE © 2014 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet Precautions Regarding Application Examples and External Circuits 1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the Products and external components, including transient characteristics, as well as static characteristics. 2. You agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for Products use. 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Product performance and soldered connections may deteriorate if the Products are stored in the places where: [a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [b] the temperature or humidity exceeds those recommended by ROHM [c] the Products are exposed to direct sunshine or condensation [d] the Products are exposed to high Electrostatic 2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is exceeding the recommended storage time period. 3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. Use Products within the specified time after opening a humidity barrier bag. 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The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. Notice – WE © 2014 ROHM Co., Ltd. All rights reserved. Rev.001