LB11867FV - Variable Speed Single‐phase Full‐wave …

1 Semiconductor Components Industries, LLC, 2014 March, 2018 Rev. 21 Publication Order Number: LB11867FV /DLB11867 FVVariable SpeedSingle phase Full wavePre driver for Fan MotorMonolithic Digital ICOverviewLB11867FV is a single -phase bipolar driving motor pre-driver withthe Variable Speed function compatible with external PWM a few external parts, a highly-efficient and highly-silent variabledrive fan motor with low power consumption can be achieved. Thisproduct is best suited for driving of the server requiring large air flowand large current and the fan motor of consumer single -phase Full-wave Driving Pre-driver Low-saturation Drive Using External PMOS NMOS EnablesHigh-efficiency Low Power-consumption Drive Variable Speed Control Possible with External PWM Input Separately-excited Upper Direct PWM (f =30 kHz)

2 ControlMethod Ensures Highly Silent Speed Control Current Limiting Circuit Incorporated Chopper Type Current Limiting Made at Startup and during Lock Reactive Current Cut Circuit Incorporated Reactive Current before Phase Changeover is Cut, EnsuringHighly Silent and Low Power-consumption Drive Minimum Speed Setting Pin Minimum Speed can be Set by Setting the Resistance Soft Start Setting Pin Lock Protection and Automatic Reset Circuits Incorporated FG (Rotation Speed Detection) Output Thermal Shutdown Circuit IncorporatedTypical Applications Computing & Peripherals Industrial Server Vending 565 AMMARKING DIAGRAMXXXX = Specific Device CodeY= YearM= MonthDDD = Additional Traceability DataXXXXXXXXXXYMDDDPIN ASSIGNMENTOUT1 POUT1 NSGND5 VREGS SCTIN+IN 169 OUT2 POUT2 NVCCSENSERMIVTHCPWMFG18(Top View)See detailed ordering and shipping information on page 9 ofthis data MAXIMUM RATINGS (TA = 25 C)

3 SymbolParameterConditionsRatingsUnitVCC max VCC Pin Maximum Supply Voltage18 VIOUTN max OUTN Pin Maximum Output Current20mAIOUTP max OUTP Pin Maximum Sink Current20mAVOUT max OUT Pin Output Withstand Voltage18 VVVTH, VRMI max VTH, RMI Pins Withstand Voltage7 VVS S max S S Pin Withstand Voltage7 VVFG max FG Output Pin Withstand Voltage19 VIFG max FG Pin Maximum Output Current10mAI5 VREG max 5 VREG Pin Maximum Output Current20mAPd max Allowable Power Dissipation With specified substrate (Note 1)800mWTopr Operating Temperature (Note 2) 30 to 95 CTstg Storage Temperature 55 to 150 CStresses exceeding those listed in the Maximum Ratings table may damage the device.

4 If any of these limits are exceeded, device functionalityshould not be assumed, damage may occur and reliability may be Specified substrate: mm mm mm, glass epoxy Tj max = 150 C must not be exceeded. RECOMMENDED OPERATING CONDITIONS (TA = 25 C) SymbolParameterConditionsRatingsUnitVCC VCC Supply Voltage to 16 VVTH, RMI VTH, RMI Input Voltage Range 0 to 5 VVICM Hall Input Common-phase Input Voltage Range to 3 VFunctional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyondthe Recommended Operating Ranges limits may affect device reliability.

5 ELECTRICAL CHARACTERISTICS (TA = 25 C, VCC = 12 V) SymbolParameterConditionsMinTypMaxUnitIC C1 Circuit Current During During lock 5 VREG Voltage I5 VREG = 5 Current Limiting Voltage185200215mVVCPWMH CPWM Pin H Level CPWM Pin L Level CPWM Pin Charge Current VCPWM = V243036mAICPWM2 CPWM Pin Discharge Current VCPWM = V212733mAFPWM CPWM Oscillation Frequency C = 220 pF 30 kHzVCTH CT Pin H Level CT Pin L Level CT Pin Charge Current VCT = CT Pin Discharge Current VCT = CT Pin Charge/Discharge Ratio ICT1/ICT281012timesIS S S S Pin Discharge Current VS S = 1

6 ELECTRICAL CHARACTERISTICS (TA = 25 C, VCC = 12 V) (continued)SymbolUnitMaxTypMinConditions ParameterVONH OUTN Output H-level Voltage IO = 10 mA VCC OUTN Output L-level Voltage IO = 10 mA OUTP Output L-level Voltage IO = 10 mA Hall Input Sensitivity IN+, IN differential voltage (including offset and hysteresis) 10 20mVVFGL FG Output L-level Voltage IFG = 5 mA FG Pin Leakage Current VFG = 19 V 20mAIVTH/IRMI VTH/RMI Pin Bias Current CPWM = VTH/RMI = 2 V parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted.

7 Productperformance may not be indicated by the Electrical Characteristics if operated under different 1. Pd max TA0306002004006008001000 Ambient Temperature, TA 5 CAllowable Power Dissipation,Pd max mW90 30120 Mounted on a specified mm glass epoxy DIAGRAMF igure 2. Block Diagram TRUTH TABLE DRIVE LOCK CPWM = H VTH, RMI, S S = LIN IN+CTOUT1 POUT1 NOUT2 POUT2 NFGModeHLLLLOFFHLOUT1 2 driveLHOFFHLLOFFOUT2 1 driveHLHOFFLOFFHLLock protectionLHOFFHOFFLOFF TRUTH TABLE Speed CONTROL CT, S S = LVTH, RMICPWMIN IN+OUT1 POUT1 NOUT2 POUT2 NModeLHHLLLOFFHOUT1 2 driveLHOFFHLLOUT2 1 driveHLHLOFFLOFFHR egeneration modeLHOFFHOFFLNOTE:For VTH, RMI, and S S pins, refer to the timing CIRCUITF igure 3.

8 Application Circuit Example (12 V)*1: Power-GND WiringSGND is connected to the control circuit powersupply system.*2: Power Stabilization CapacitorFor the power stabilization capacitor on the signalside, use the capacitance of 1mF or VCC and GND with a thick and shortestpattern.*3: Power Stabilization Capacitor on the Power SideFor the power stabilization capacitor on the powerside, use the capacitance of 1mF or the power supply on the power side andGND with a thick and shortest pattern.*4: IN+, IN PinsHall signal input should be short to prevent carrying noise is carried, insert the capacitor between IN+and IN Hall input circuit functions as a comparatorwith hysteresis (15 mV).

9 This also has a soft switch section with 30 mV(input signal differential voltage).It is also recommended that the Hall input level isminimum 100mV(p p).*5: CPWM PinPin to connect the capacitor for generation of thePWM basic use of CP = 220 pF causes oscillation at f = 30 kHz, which is the basic frequency of this is used also for the current limitingcanceling signal, be sure to connect the capacitoreven when the Speed control is not made.*6: RMI PinMinimum Speed setting pull-up with 5 VREG when this pin is notto be the IC power supply is likely to be turned OFFfirst when the pin is used with external powersupply, be sure to insert the current limitingresistor to prevent inflow of large current.

10 (The same applies to the VTH pin.) *7: VTH PinSpeed control this pin to GND when it is not used (at full Speed ).For the control method, refer to the timing control with pulse input, insert the currentlimiting resistor and use the pin with the frequencyof 20 kHz to 100 kHz (20 kHz to 50 kHzrecommended).*8: SENSE PinCurrent limiting detection the pin voltage exceeds V, the current islimited and the operation enters the lowerregeneration this pin to GND when it is not to be used.*9: FG PinRotation Speed detection is an open collector output, which can detectthe rotation Speed from the FG output according tothe phase changeover.