CA3275
April 1994
Dual Full Bridge Driver
DescriptionTheCA3275DualFullBridgeDriverisintendedforgeneral-purposeapplicationsrequiringDualFullBridgedriveorswitching,includingdirectionandpulse-widthmodulationforpositioncontrol.WhileallfeaturesoftheICmaynotbeuti-lizedorrequired,theywouldnormallybeusedininstrumen-tationsystemswithquadraturecoils,suchasair-coregauges,wherethecoilswouldbedrivenatfrequenciesrang-ingfrom200Hzto400Hz.Thecoilsarewrappedat90oanglesforindependentdirectioncontrol.Coilswoundinthisphysicalcon?gurationarecontrolledbypulsewidthmodula-tion,whereeachcoildriveisafunctionofthesineorcosineversusdegreesofmovement.Thedirectioncontrolisusedto change the direction of the current in the H-Driver coil.TheswitchratecapabilityoftheICistypically30kHzregard-lessoftheinductiveload.Over-currentlimitingisusedtolimitshortcircuitcurrent.Over-voltageprotection(intherangeof18Vto24V)causesthedevicetoshutdowntheoutputcurrentdrive.Thermalshutdownlimitspowerdissipa-tiononthechip.TheCA3275issuppliedina14leaddual-in-line plastic package.Features?Two Full Bridge Drivers?±150mA Maximum Current?Logic Controlled Switching?Direction Control?PWM IOUT Control?18V Over-Voltage Protection?300mA Short-Circuit Protection?Nominal 8V to 16V Operation?Internal Voltage Regulation With Bandgap ReferenceApplications?DualFullBridgeDriverForAirCoreGaugeInstrumen-tation?μP Controlled Sensor Data Displays?Speedometer Displays?Tachometer Displays?Stepper Motors?Slave Position IndicatorsOrdering InformationPART NO.CA3275ETEMPERATURE-40oC to +85oCPACKAGE14 Lead Plastic DIPPinoutCA3275 (PDIP)TOP VIEWCOIL A-1VCCVCC2314COIL A+13GND12PWMA11DIR A10GND9GND8COIL B+Block DiagramLASENSOR &CONVERTERA/D, V/F, ETCMICROPROCESSORPHASE, DIRECTION& PWM CONTROLCA3275DUAL-HDRIVERLBSINROTORPWMB4DIR B5VCC6COSCOIL B-7CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.1-888-INTERSIL or 321-724-7143|Copyright ? Intersil Corporation 1999
File Number
2159.3
6-3
Speci?cations CA3275
Absolute Maximum RatingsOperating VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16VTransient VCC, 30 Seconds Maximum . . . . . . . . . . . . . . . . . . . .24VPeak VCC, 0.4 Seconds Maximum . . . . . . . . . . . . . . . . . . . . . . .40VMaximum Continuous Output Current,. . . . . . . . . . . . . . . . . . .±100mAEach DriveMaximum PWM Output Switching Current,. . . . . . . . . . . . . . .±150mAEach DriveThermal InformationThermal ResistanceθJAPDIP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100oC/WPower Dissipation, PDUp to +70oC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .800mWAbove +70oC. . . . . . . . . . . . . . . . . . .Derate Linearly at 10mW/oCAmbient Temperature RangeOperating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40oC to +85oCStorage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-55oC to +150oCLead Temperature (During Soldering). . . . . . . . . . . . . . . . . .+265oCAtdistance1/16±1/32\(1.59±0.79mm)fromcasefor10smaxCAUTION:Stressesabovethoselistedin“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thisisastressonlyratingandoperationof the device at these or any other conditions above those indicated in the operational sections of this speci?cation is not implied.Electrical Speci?cationsTA = -40oC to +85oC, VCC = 16V Unless Otherwise Speci?edSYMBOLVCCICCMIN8-TYP-8MAX1620UNITSVmAPARAMETERSOperating Supply Voltage RangeSupply Current (Note 1)INPUT LEVELSLogic Input, Low VoltageLogic Input, High VoltageLogic Input, Low Current, VIL = 0VLogic Input, High Current, VIH = 5VOUTPUT:RLA = RLB = 138?Maximum Source Saturated VoltageMaximum Sink Saturated VoltageDifferential VSAT Voltage, Both Outputs SaturatedVILVIHIILIIH-3.5-10-----0.8--10VVμAμAVSAT - HighVSAT - LowDiff - VSAT---1.20.25101.750.5100VVmVSwitching Speci?cationsPARAMETERSSOURCE CURRENT (See Figure 3)Turn-Off DelayFall TimeTurn-On TimeRise TimeSINK CURRENT (See Figure 4)Turn-Off DelayFall TimeTurn-On TimeRise TimeNOTE:1.No load, PWMA = PWMB = 5V, DIR A = DIR B = 0VTSK-OFFTSK-FTSK-ONTSK-R--------1.60.40.60.2μsμsμsμsTSC-OFFTSC-FTSC-ONTSC-R--------22.210.4μsμsμsμsSYMBOLMINTYPMAXUNITS6-4
CA3275
VCCSHORTCIRCUITPROTECTIONQ1POWERDIRACOIL A–Q2POWERSHORTCIRCUITPROTECTIONQ3POWERCOIL A+Q4POWERPWMAVCCSHORTCIRCUITPROTECTIONSHORTCIRCUITPROTECTIONINTERNAL VOLTAGESUPPLY WITHBANDGAP REFERENCEOVERVOLTAGE PROTECTIONAND THERMAL SHUTDOWNCIRCUITSSHORTCIRCUITPROTECTIONVCCSHORTCIRCUITPROTECTIONQ7POWERCOIL B+Q8POWERQ5POWERDIRBCOIL B–Q6POWERPWMBSHORTCIRCUITPROTECTIONSHORTCIRCUITPROTECTIONFIGURE 1.CA3275 DUAL FULL BRIDGE DRIVER SCHEMATICVCCCOIL A–VCCVCCPWMBDIRBPWMBDIRBVCCCOIL B–1234567141312111098COIL A+GNDPWMADIRAGNDGNDCOIL B+RALASTEPMOTORLBRBDIRAPWMAFIGURE 2.QUADRATURE STEP-MOTOR APPLICATION SCHEMATIC6-5
CA3275
VSDIRDUTPWMRL150CL30pFCOILCL INCLUDES PROBE AND TEST CAPACITANCE50%TEST CIRCUIT 150%DIR PULSE90%TEST CONDITIONS: PWM = 0V, VS = 16VDIR PULSE PARAMETERS:F = 1kHz, W = 100μs, TR = TF = 1μs, AMPL = 4V90%COIL OUTPUT10%TSC-ONTSC-RTSC-OFFTSC-F10%TSC-OFFTSC-F90%TSC-ONTSC-R90%COIL OUTPUT10%FIGURE 3.SOURCE SWITCHING TEST CIRCUIT AND VOLTAGE WAVEFORMSTEST CONDITIONS:VS = 16VDIR = 0V WHEN TESTING COIL - OUTPUTDIR = 4V WHEN TESTING COIL + OUTPUTVSRLDIRDUTPWM150COILCLCL INCLUDES PROBE AND TEST FIXTURE CAPACITANCE30pFTEST CIRCUIT 250%PWM PULSE PARAMETERS:F = 1kHz, W = 100μs, TR = TF = 1μs, AMPL = 4VTSK-ONTSK-RTSK-OFFTSK-FPWM PULSE10%COIL OUTPUT90%FIGURE 4.SINK SWITCHING TEST CIRCUIT AND VOLTAGE WAVEFORMS6-6
All Intersil semiconductor products are manufactured, assembled and tested underISO9000 quality systems certi?cation.Intersilproductsaresoldbydescriptiononly.IntersilCorporationreservestherighttomakechangesincircuitdesignand/orspecificationsatanytimewithoutnotice.Accordingly,thereaderiscautionedtoverifythatdatasheetsarecurrentbeforeplacingorders.InformationfurnishedbyIntersilisbelievedtobeaccurateandreli-able.However,noresponsibilityisassumedbyIntersiloritssubsidiariesforitsuse;norforanyinfringementsofpatentsorotherrightsofthirdpartieswhichmayresult from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.For information regarding Intersil Corporation and its products, see web sitehttp://www.intersil.comSales Of?ce HeadquartersNORTH AMERICAIntersil CorporationP. O. Box 883, Mail Stop 53-204Melbourne, FL32902TEL:(321) 727-9207FAX: (321) 724-7240EUROPEIntersil SAMercure Center100, Rue de la Fusee1130 Brussels, BelgiumTEL: (32) 2.724.2111FAX: (32) 2.724.22.05ASIAIntersil (Taiwan) Ltd.Taiwan Limited7F-6, No. 101 Fu Hsing North RoadTaipei, TaiwanRepublic of ChinaTEL: (886) 2 2716 9310FAX: (886) 2 2715 30296-7
CA3275
