00_hardware02_芯片手册powertlv62130rgt

1、TLV62130SLVSB74 FEBRUARY 20124-17V 3A Step-Down Converter with DCS-ControlTMCheck for Samples: TLV62130FEATURESDESCRIPTIONThe TLV62130 is an easy to use synchronous step down DC-DC converter optimized for applications with high power density. A high switching frequency of typically 2.5MHz

2、allows the use of small inductors and provides fast transient response as well as high output voltage accuracy by utilization of the DCS- Control topology.With its wide operating input voltage range of 4V to 17V, the devices are ideally suited for systems powered from either a Li-Ion or other batter

3、ies as well as from 12V intermediate power rails. It supports up to 3A continuous output current at output voltages between 0.9V and 5V (with 100% duty cycle mode).The output voltage startup ramp is controlled by the soft-start pin, which allows operation as either a standalone power supply or in tr

4、acking configurations. Power sequencing is also possible by configuring the Enable and open-drain Power Good pins.In Power Save Mode, the devices show quiescent current of about 19A from VIN. Power Save Mode, entered automatically and seamlessly if load is small, maintains high efficiency over the e

5、ntire load range. In Shutdown Mode, the device is turned off and shutdown current consumption is less than 2A.DCS-Control Topology Input Voltage Range: 4 to 17V Up to 3A Output CurrentAdjustable Output Voltage from 0.9 to 5VPin-Selectable Output Voltage (nominal, + 5%) Programmable Soft Start and Tr

6、acking Seamless Power Save Mode Transition Quiescent Current of 19A (typ.)Selectable Operating Frequency Power Good Output100% Duty Cycle Mode Short Circuit ProtectionOver Temperature ProtectionFor Improved Feature Set, see TPS62130 Available in a 3 3 mm, QFN-16 PackageAPPLICATIONSStandard 12V Rail

7、SuppliesPOL Supply from Single or Multiple Li-Ion BatteryEmbedded Systems LDO replacementMobile PCs, Tablet, Modems, CamerasThe device is packaged in measuring 3 3 mm (RGT).a16-pinQFNpackage(4 . 17)V1 / 2.2 H3.3V / 3APVINSWAVINVOS 100k10uFENPG750k 22uFTLV62130SS/TRFB3.3nFDEFAGND240kFSWPGNDFigure 1.T

8、ypical Application and EfficiencyPlease be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.DCS-Control is a trademark of Texas Instrum

9、ents.PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.Copyright 2012, Texas Instruments IncorporatedTLV62130SLVSB74

10、FEBRUARY 2012These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.ORDERING INFORMATION(1)(1) For detailed ordering information please chec

11、k the PACKAGE OPTION ADDENDUM section at the end of this datasheet.(2) Contact the factory to check availability of other fixed output voltage versions.ABSOLUTE MAXIMUM RATINGS(1)over operating free-air temperature range (unless otherwise noted)(1) Stresses beyond those listed under absolute maximum

12、 ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods m

13、ay affect device reliability.(2) All voltages are with respect to network ground terminal.(3) ESD testing is performed according to the respective JESD22 JEDEC standard.THERMAL INFORMATION(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics applicati

14、on report, SPRA953.RECOMMENDED OPERATING CONDITIONS2Submit Documentation FeedbackCopyright 2012, Texas Instruments IncorporatedProduct Folder Link(s): TLV62130MINTYPMAXUNITSupply Voltage, VIN (at AVIN and PVIN)417VOperating free air temperature, TA4085COperating junction temperature, TJ40125CTHERMAL

15、 METRIC(1)TLV62130UNITSRGT 16 PINSJAJunction-to-ambient thermal resistance29.1C/WJC(TOP)Junction-to-case(top) thermal resistance15JBJunction-to-board thermal resistance11JTJunction-to-top characterization parameter0.5JBJunction-to-board characterization parameter10JC(BOTTOM)Junction-to-case(bottom)

16、thermal resistance3.5MINMAXUNITPin voltage range(2)AVIN, PVIN0.320VEN, SS/TR0.3VIN+0.3SW0.3VIN+0.3VDEF, FSW, FB, PG, VOS0.37VPower Good sink currentPG10mATemperature rangeOperating junction temperature range, TJ40125CStorage temperature range, Tstg65150ESD rating(3)HBM Human body model2kVCDM Charge

17、device model0.5kVTAOUTPUT VOLTAGEPART NUMBER(2)PACKAGEORDERINGPACKAGE MARKING-40C to 85CadjustableTLV6213016-Pin QFNTLV62130RGTVUBITLV62130SLVSB74 FEBRUARY 2012ELECTRICAL CHARACTERISTICSover free-air temperature range (TA=-40C to +85C), typical values at VIN=12V and TA=25C (unless otherwis

18、e noted)(1) The device is still functional down to Under Voltage Lockout (see parameter(2) Current into AVIN+PVIN pin.VUVLO).(3) This is the static current limit. It can be temporarily higher in applications due to internal propagation delay (see Current Limit And ShortCircuit Protection section).(4

19、) This is the voltage regulated at the FB pin.(5) This is the accuracy provided by the device itself (line and load regulation effects are not included).(6) Line and load regulation depend on external component selection and layout (see Figure 16 and Figure 17).Submit Documentation Feedback3Copyrigh

20、t 2012, Texas Instruments IncorporatedProduct Folder Link(s): TLV62130PARAMETERTEST CONDITIONSMINTYP MAXUNITSUPPLYVINInput voltage range(1)417VIQOperating quiescent currentEN=High, IOUT=0mA, device not switching1927AISDShutdown current(2)EN=Low1.54AVUVLOUndervoltage lockout thresholdFalling Input Vo

21、ltageVHysteresis200mVTSDThermal shutdown temperature160CThermal shutdown hysteresis20CONTROL (EN, DEF, FSW, SS/TR, PG)VHHigh level input threshold voltage (EN, DEF, FSW)0.9VVLLow level input threshold voltage (EN, DEF, FSW)0.3VILKGInput leakage current (EN, DEF, FSW)EN=VIN or GND; DEF, FSW=

22、VOUT or GND0.011AVTH_PGPower good threshold voltageRising (%VOUT)929598%Falling (%VOUT)879094VOL_PGPower good output lowIPG=-2mA0.070.3VILKG_PGInput leakage current (PG)VPG=1.8V1400nAISS/TRSS/TR pin source currentAPOWER SWITCHRDS(ON)High-side MOSFET ON-resistanceVIN6V90mLow-side MOSFET ON-r

23、esistanceVIN6V40mILIMFHigh-side MOSFET forward current limit(3)VIN =12V, TA= 25C3.64.2AOUTPUTVREFInternal reference voltage(4)0.8VILKG_FBInput leakage current (FB)VFB=0.8V1100nAVOUTOutput voltage rangeVIN VOUT0.95.0VDEF (Output voltage programming)DEF=0 (GND)VOUTDEF=1 (VOUT)VOUT+5%Initial output vol

24、tage accuracy(5)PWM mode operation, VIN VOUT +1V2.52.5%Load regulation(6)VIN=12V, VOUT=3.3V, PWM mode operation0.05%/ALine regulation(6)4V VIN 17V, VOUT=3.3V, IOUT= 1A, PWMmode operation0.02%/VTLV62130SLVSB74 FEBRUARY 2012DEVICE INFORMATIONRGT PACKAGE (TOP VIEW)16151413SWPVIN112SW211PVINEx

25、posedThermal PadSW310AVIN49PGSS/TR5678Terminal Functions(1) For more information about connecting pins, see DETAILED DESCRIPTION and APPLICATION INFORMATION sections.(2) An internal pull-down resistor keeps logic level low, if pin is floating.4Submit Documentation FeedbackCopyright 2012, Texas Instr

26、uments IncorporatedProduct Folder Link(s): TLV62130FBPGNDAGNDPGNDFSWVOSDEFENPIN(1)I/ODESCRIPTIONNAMENO.SW1,2,3OSwitch node, which is connected to the internal MOSFET switches. Connect inductor between SW and output capacitor.PG4OOutput power good (High = VOUT ready, Low = VOUT below nominal regulati

27、on) ; open drain (requires pull-up resistor; goes high impedance, when device is switched off)FB5IVoltage feedback. Connect resistive voltage divider to this pin.AGND6Analog GroundFSW7ISwitching Frequency Select (Low 2.5MHz, High 1.25MHz for typical operation)(2)DEF8IOutput Voltage Scaling (Low = no

28、minal, High = nominal + 5%)(2)SS/TR9ISoft-Start / Tracking Pin. An external capacitor connected to this pin sets the internal voltage reference rise time. It can be used for tracking and sequencing.AVIN10ISupply voltage for control circuitry. Connect to same source as PVIN.PVIN11,12ISupply voltage f

29、or power stage. Connect to same source as AVIN.EN13IEnable input (High = enabled, Low = disabled)(2)VOS14IOutput voltage sense pin and connection for the control loop circuitry.PGND15,16Power groundExposed Thermal PadMust be connected to AGND. Must be soldered to achieve appropriate power dissipatio

30、n and mechanical reliability.TLV62130SLVSB74 FEBRUARY 2012FUNCTIONAL BLOCK DIAGRAMPGAVINPVINPVINSoft startThermal ShtdwnUVLOPG controlHS limcompEN*SWSS/TRpower controlgate drivecontrol logicSWDEF*SWFSW*compLS limVOSramp_FBtimer tONcomparator error + amplifierDCS - ControlTMAGNDPGND PGND* T

31、his pin is connected to a pull down resistor internally (see Detailed Description section).Figure 2.TLV62130Submit Documentation Feedback5Copyright 2012, Texas Instruments IncorporatedProduct Folder Link(s): TLV62130direct control & compensationTLV62130SLVSB74 FEBRUARY 2012PARAMETER MEASUR

32、EMENT INFORMATIONList of ComponentsVINL1VOUTPVINSWAVINVOS R3FPBG CINENR1 COUTTLV62130PFGBAGNDSS/TRCSSDEFR2FSWPGNDFigure 3.Measurement SetupTYPICAL CHARACTERISTICSTable of Graphs6Submit Documentation FeedbackCopyright 2012, Texas Instruments IncorporatedProduct Folder Link(s): TLV62130DESCRIPTIONFIGU

33、REEfficiencyvs Output Current, vs Input Voltage5 - 16Output voltagevs Output current (Load regulation), vs Input Voltage (Line regulation)17, 18Switching Frequencyvs Input Voltage19vs Output Current20Quiescent Currentvs Input Voltage21Shutdown Currentvs Input Voltage22Power FET RDS(on)vs Input Volta

34、ge (High-Side, Low-Side)23, 24Output Voltage Ripplevs output Current25Maximum Output Currentvs Input Voltage26Power Supply Rejection Ratio (PSSR)vs Frequency27, 28WaveformsPWM-PSM-PWM Mode Transition29Load Transient Response30 - 32Startup33, 34Typical PWM Mode Operation35Typical Power Save Mode Oper

35、ation36Maximum Ambient Temperaturevs Load Current37vs Power Dissipation38REFERENCEDESCRIPTIONMANUFACTURERIC17V, 3A Step-Down Converter, QFNTLV62130RGT, Texas InstrumentsL12.2H, 0.165 x 0.165 inXFL4020-222MEB, CoilcraftCin10F, 25V, CeramicStandardCout22F, 6.3V, CeramicStandardCs3300pF, 25V, CeramicR1

36、depending on VoutR2depending on VoutR3100k, Chip, 0603, 1/16W, 1%StandardTLV62130SLVSB74 FEBRUARY 2012EFFICIENCYvs OUTPUT CURRENTEFFICIENCYvsINPUT VOLTAGE100.090.080.070.060.050.040.030.020.010.0100.090.080.070.060.050.040.030.020.010.00.0VIN=17VVIN=12VIOUT=10mAIOUT=1AIOUT=1mAIOUT=100mAVOU

37、T=5.0V L=2.2uH (XFL4020)Cout=22uFVOUT=5.0V L=2.2uH (XFL4020)Cout=22uF0.00.00010.0010.010.1110G0017891011121314151617Output Current (A)Figure 4. Efficiency with 1.25MHz, Vout=5VInput Voltage (V)Figure 5. Efficiency with 1.25MHz, Vout=5VG001EFFICIENCYvs OUTPUT CURRENTEFFICIENCYvsINPUT VOLTAGE100.090.0

38、80.070.060.050.040.030.020.010.0100.090.080.070.060.050.040.030.020.010.00.0VIN=17VIOUT=10mAIOUT=1AVIN=12VIOUT=1mAIOUT=100mAVOUT=5.0V L=2.2uH (XFL4020)Cout=22uFVOUT=5.0V L=2.2uH (XFL4020)Cout=22uF0.00.00010.0010.010.1110G0017891011121314151617Output Current (A)Figure 6. Efficiency with 2.5MHz, Vout=

39、5VInput Voltage (V)Figure 7. Efficiency with 2.5MHz, Vout=5VG001EFFICIENCYvs OUTPUT CURRENTEFFICIENCYvsINPUT VOLTAGE100.090.080.070.060.050.040.030.020.010.0100.090.080.070.060.050.040.030.020.010.00.0VIN=12VVIN=17VVIN=5VIOUT=1A IOUT=100mA IOUT=10mAIOUT=1mAVOUT=3.3V L=2.2uH (XFL4020)Cout=22uFVOUT=3.

40、3V L=2.2uH (XFL4020)Cout=22uF0.00.00010.0010.010.1110G001456789 10 11 12 13 14 15 16Input Voltage (V)17G001Output Current (A)Figure 8. Efficiency with 1.25MHz, Vout=3.3VFigure 9. Efficiency with 1.25MHz, Vout=3.3VSubmit Documentation Feedback7Copyright 2012, Texas Instruments IncorporatedProduct Fol

41、der Link(s): TLV62130Efficiency (%)Efficiency (%)Efficiency (%)Efficiency (%)Efficiency (%)Efficiency (%)TLV62130SLVSB74 FEBRUARY 2012EFFICIENCYvs OUTPUT CURRENTEFFICIENCYvsINPUT VOLTAGE100.090.080.070.060.050.040.030.020.010.0100.090.080.070.060.050.040.030.020.010.00.0VIN=12VVIN=17VIOUT=100mAIOUT=1mAVIN=5VIOUT=10mAIOUT=1AVOUT=3.3V L=2.2uH (XFL4020)Cout=22uFVOUT=3.3V L=2.2uH (XFL4020)Cout=22uF0.00.00010.0010.010.1