Reference Design Cookbook 3 - Power Management

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Power ManagementReference Design Cookbook III2Q 2008

2Reference Design CookbookPower Management Products from Texas InstrumentsTI provides a broad portfolio of high-performance power management products ranging from standard linear regulators toplug-in and integrated power solutions. Together with superior applications knowledge, extensive local technical supportand easy to use design tools, TI can help you differentiate your designs and get to market faster.Introducing TI’s Reference Design Cookbook IIIWelcome to TI's latest Power Management Cookbook, the third in the series. This is a collection of completepower solutions and design documentation from TI's extensive library of reference designs and evaluationmodules (EVMs) available to our customers. For hundreds of other TI reference designs, This website is frequently updated with new circuits.Also, if you would like copies of the first and second issues of the Reference Design Cookbook, please downloadthem at the URL referenced above, or request copies by calling: 972-644-5580 and mention Lit #: SLUB009 (I)or SLUB012 (II).TI hopes you enjoy these latest “recipes”, and that this Cookbook will help you simplify and streamline your powersupply designs.Device Quick Search ToolDevice Quick Search*Either Nominal OR both Min and Max is Requireddevice quick searchInput*Nominal Vin (V)OR*Min Vin (V)*Max Vin (V)Output 1Vout (V)Iout (A)Output 2Vout (V)Iout (A)Search for devices withmore than two outputsSearch for isolated solutionsSearchCheck out TI’s Power Quick Search Toolfor recommended power solutions acrossDC/DC Conversion and PWM Controllerproducts based on user input criteria.power.ti.comReference Design Cookbook III for Power Management ProductsTexas Instruments 2Q 2008

Reference Design Cookbook3Table of ContentsInsideConverter Design TopologyVINVOUTIOUT (A)Part NumberPageSynchronous Buck1256TPS401904Synchronous Buck123.310TPS401956Synchronous Buck Dual5 or 3.32.5/1.22 /4TPS401408Synchronous Buck Dual5 or 3.3.6 to VIN.400/.600TPS6240010Synchronous Buck Three Phase121.860TPS4018012Synchronous Buck Digital Dual Phase12140UCD911214Non-Synchronous Buck Dual53/1.33TPS5438616Non-Synchronous Buck to Drive LEDs5020/45.520TPS4020018Synchronous Boost15221TPS4021020Synchronous Boost13.3.100TPS6120022Non-Synchronous Boost2.512.1.443TPS6108124Synchronous Buck Boost3—.700/.350TPS6300026Synchronous Buck Boost5–5.22TPS5455028Inverting Buck Boost12 or 15–52.25TPS543030Non-Isolated Non-Synchronous SEPIC3 to 325.300UCC380732Isolated Synchronous Flyback37 to 571.21TPS2375034Isolated Synchronous Flyback36 to 753.35UCC380936Green-Mode AC Input Flyback85 to 265 (AC)125UCC2860038PMU with 2 Buck Converters and 4 LDOsMultipleMultipleMultipleTPS6505040Battery Charger Front-End Protection Circuit4.5 to 264.5 to 5.851bq2431442TI has many other reference designs that may be found Instruments 2Q 2008Reference Design Cookbook III for Power Management Products

TPS4019046-A Synchronous Buck Converter with Minimal External ComponentsDescriptionThe TPS40190 controller is a cost-optimized synchronous controller that operates from4.5 V to 15 V nominally, and implements a fixed frequency voltage mode power supply.The controller uses an adaptive anti-cross conduction scheme to prevent both thehigh-side and the rectifier MOSFET to be turned on at the same time, preventingshoot through current in the two MOSFETs. The controller also provides a short circuitprotection threshold that is user selectable among one of three values. When thecontroller senses an output short circuit, both MOSFETs are turned off and a timeoutperiod is observed before attempting to restart. This provides limited power dissipationin the event of a sustained fault.Web Links:Reference , User’s Guides, Samples:www.ti.comPart Number Search: TPS40190Additionally, the chip features a 591-mV reference with 1% accuracy over temperature.The TPS40190 provides strong drivers to minimize switching losses in the power stage,reducing heat build up in the MOSFETs and allowing larger MOSFETs to be used withoutundue switching time penalty.SpecificationsParameterTest ConditionsInput VoltageOutput Voltage0 IOUT, 6 P-P6AmpsOutput RippleOutput Current0Switching Frequency300Efficiency0.5 A IOUT, 6 A90.5kHz9596%PMP2942 SchematicQ12N7002DISABLEJ112VINC1.01 µFR1100 kΩVIN10.8 V to 13.2 VINVINTP1J21C63300 pFR2249 Ω5R449.9 Ω45VR310 DBP511 PwPdTP7TP3330 pFVINC12.01 µFR101.33 kΩR9OpenR83.01 kΩQ2Si4390DYC140.1 µFR63.3 Ω1098763R52Open 1C310 µF16 VC410 µF16 VC510 µF16 VC11610 µF16 V2C1181 µFTP2TP5TP4L14.7 µH5VJ315C80.1 µFC134.7 µF4D1MBR05303215 V@6 A2Q4Si4390DYR7OpenC15OpenC117100 µF6.3 VC11100 µF6.3 VC1191 µFTP6fs 300 kHzSockets on PMP1402 not used for this designBuild based on universal PMP14025 C2OpenC9Open2.5 V C10Open2.5 V 5Q3Open4321Q5Open4321Reference Design Cookbook III for Power Management ProductsTexas Instruments 2Q 2008

TPS4019056-A Synchronous Buck Converter with Minimal External ComponentsOutput Ripple Voltage (5 V)Control Loop (Gain and Phase)Startup (5 V)Efficiency %Efficiency (5 V 092.592.091.591.090.590.012 VIN0. Current (Amps)Load/Line Regulation (5 V Output)Load Transient (5 V)5.08Output Voltage (V) VIN5. Currrent (Amps)Texas Instruments 2Q 2008Reference Design Cookbook III for Power Management Products

6TPS40195High-Frequency Synchronous Buck Converter for Optimized EfficiencyWeb Links:Reference Designs:DescriptionThe TPS40195 controller is used in high-frequency, synchronous buck power supplies. Itis intended for input voltages between 4.5 and 20 V and load currents up to 20 A. It canoperate at switching frequencies between 100 and 600 kHz allowing the circuit designerthe option of optimizing for efficiency and higher power at the lower frequency or smallersize and lower cost at the high frequency. This chip uses voltage mode control for lowermid-frequency source impedance and quicker recovery from load ets, User’s Guides, Samples:www.ti.comPart Number Search: TPS40195This circuit uses the TPS40195 in the synchronous buck configuration. A synchronousbuck is typically used when the output voltage is always lower than the input voltageand at currents where a catch diode would dissipate too much heat. This designswitches at 600 kHz which allows the use of a small inductor and ceramic outputcapacitors. With this high switching frequency, the control loop can be closed at ahigh frequency with good gain ( 10 dB) and good phase margin ( 45 degrees).SpecificationsParameterTest ConditionsInput VoltageOutput Voltage0 IOUT 10 AmpsOutput RippleOutput Current0Switching Frequency600Efficiency2 A IOUT 10 AkHz90%PMP3080 Schematic10 V to 20 V InputVINTP1J1VINGND12C322 µF25 VR1100 kΩ0603C61 µFTP2TP11C922 µF25 VC121 µF600 kHzU1TPS40195RGY1R2191 kΩ2345678R1717.8 kΩR741.2 kΩR651.1 kΩENFBCOMPVDDUVLORTILIMGNDHDRVSWBOOTLDRVBPSS S6298321TP4L14.7 µHTP50Ω8765Q3BPR220ΩC2110 µFR80ΩTP34FDS6298321R160Ω8 7 65Q44FDS6298321R5OPENC1847 µFC1447 µFC20OPENTP6R10R9C221000 pF 15.0 kΩVOUTJ23.3 V@ 10 A2GND149.9 kΩR13C233.01 kΩ330 pFTP7R11TP8C2449.9 Ω47 pFR1411.0 kΩ* For Loop MeasurementTP10Notes:Build Using PMP2491 REVA PWBReference Design Cookbook III for Power Management ProductsTexas Instruments 2Q 2008

TPS401957High-Frequency Synchronous Buck Converter for Optimized EfficiencyOutput Ripple Voltage, Vertical: 10 mV/DIV, Horizontal: 1 µS/DIVdB503-Gain150 degdB403-Phase120 deg60 deg10 dB30 deg0 deg0 dB–10 dB–30 deg–20 dB–60 deg–90 deg–40 dB–120 deg1 kHz10 kHz–180–30 dB100 HzGain20 dB100Phase90 deg30 dB–6018060Control Loop (Gain and Phase), 40 KHz Crossover,45 Phase MarginFrequency100 kStartup, Vertical: 500 mV/DIV, Horizontal: 200 0%92.5%92.0%91.5%91.0%90.5%90.0%0246IOUT (A)81012Transient Load Response, Upper Vertical: 100 mV/DIV,Lower Vertical: 2 A/DIV,Horizontal: 10 µs/DIVRegulation3.453.4VOUT (V)3.353.33.253.2Series13.15024681012IOUT (A)Texas Instruments 2Q 2008Reference Design Cookbook III for Power Management Products

TPS401408Dual Synchronous Buck Converter Stackable Up to 16 PhasesWeb Links:Reference Designs:DescriptionThe TPS40140 is a dual synchronous buck controller that can be used for a two-phasesingle output or for two independent outputs. The controller has an input voltage ratingof 4.5 to 15 V for the chip VCC and 2 to 40 V for the power stage. It will work in manyapplications with 5, 12 and 24 V inputs. The controller can also accept input voltagesfrom two different sources. Current mode control uses the inductor DCR to minimizeimpacts on the efficiency. A current sense resistor could be used for improved accuracy.Additionally, the chip features a 700-mV reference with better than 1% accuracyover eets, User’s Guides, Samples:www.ti.comPart Number Search: TPS40140This circuit uses the TPS40140 in the dual synchronous buck configuration. A buck istypically used when the output voltage is always lower than the input voltage. Keyconsiderations for this design are low output noise and synchronized switching. TheTPS40140 provides a CLKIO pin that can be connected between devices to create up to16 phases that are optimally shifted. The converter in this case is 5 V to 2.5 V @ 2 Aand 3.3 V to 1.2 V @ 4 A.SpecificationsParameterTest ConditionsMinTypMaxUnitInput Voltage4.5/3.05/3.35.5/3.6VoltsOutput sOutput RippleOutput Current0Switching Frequency750kHzPMP2942 SchematicC1220.047 µFR7030.1 kΩC12333 pFR714.64 kΩC1243300 pF3.3 VINR9OpenC12610 µF16 V1.2 VC1250.047 µFCS1R7310.0 kΩR8710.0 kΩR7414.0 KIOUVLO-CE1PGOOD1CS1CSRT1TRK1ILIM136SW20.01 µF30.1 kΩPGR9310.0 kΩC1460.047 µFCS2C13110 µF24232221VREG2019R884.7 ΩBP5C1370.1 µFR834.7 Ω3R13Q10:BFDS898440WD2BAT54HT1C1390.1 µF6C1404.7 uF C134220 µFC13510 µFL266.8 µH52.5 V 2.5 V @ 2 A0Ω5 VIN1R410.5 kΩQ10:AFDS89842CS28UVLO2.5 VC130220 µF325R16R9210.5 kΩQ9:BFDS898440ΩC1450.047 µFR9110.0 kΩC11Open265 R1227C1430.1 µFR10Open6VREGR843.83 kΩR86649 kΩ1.2 V 1.2 V @ 4 AC1280.1 µfBOOT2VDDC1381768 pFHDRV218FB2UVLO-CE2C136R82BP5COMP2R8164.9 kΩVREG10BP5C1331 µF9GNDPGOOD28PGNDLDRV2VSHARE16C1321 µFU9TPS40140RHHRTCS27156145LDRV1CSRT240.2 kΩSW1PHSEL11R80HDRV1GSNSC1270.1 µFL251 µH1VREGR764.7 ΩBOOT1VOUTTRK2439.2 kΩ13R793R7860.4 kΩDIFFOILIM2212C129 1000 pFCOMP13711.2 VFB1PwPdR77332 kΩQ9:AFDS898420ΩCLKIOR7551.1. ΩR724.64 kΩ78R9710.0 kΩ75 VINC14110 µF16 VR9551.1 Ω2.5 VReference Design Cookbook III for Power Management ProductsTexas Instruments 2Q 2008

TPS401409Dual Synchronous Buck Converter Stackable Up to 16 PhasesControl Loop (Gain and Phase), 30 KHz Cross OverOutput Ripple Voltage, 1.2 V (5 VIN, 4 A Load, Ripple 10 mV)Output Ripple Voltage, 2.5 V (3.3 VIN, 2 A Load, Ripple 10 mv)Texas Instruments 2Q 2008Switch NodeTurn OnLoad Step (1.2 V)Reference Design Cookbook III for Power Management Products

10TPS6240xDual Converter with High Efficiency and Few External ComponentsWeb Links:Reference Designs:DescriptionThe TPS6240x converter series provides two low voltage outputs, one up to 400 mAand the other up to 600 mA with high efficiency, small size and very few external parts.Input range covers the popular 5 V and 3. 3 V logic levels and the full range of theLithium Ion battery range. To keep the size of external components small, switchingfrequency is set to 2.25 MHz. This allows chokes to be 2.2 µHy and input/output capsto be 10 µF. Topology is synchronous buck with both the high side and low side FETsinside the s, User’s Guides, Samples:www.ti.comPart Number Search: TPS6240xThere are three fixed voltage versions and an “EasyScale ” serial interface that avoidvoltage sense resistors. With the EasyScale interface, outputs can be changed whilerunning. The TPS62400 itself is the adjustable version allowing output voltages tobe set with resistors.The specific design provides for all the TPS6240x versions and for adjustment withresistors or the EasyScale interface. Each output also has its own enable pin.The TPS6240x allows for rapid provision for the low output voltages, freeing thedesigners to focus on other parts of the system.SpecificationsParameterTest ConditionsMinInput VoltageOutput VoltageTPS62400Output CurrentRipple VoltageMaxUnit2.5Typ6Volts0.6VINVolts0400/600mAPWM ModeSwitching FrequencyEfficiency1.8 V OutputStep Load Response TimePWM ModePFM Mode 10mVP-P2.25MHz 90%10 µs50 µsTPS62400EVM-167 SchematicJ1VINJ2GNDVIN121ADJ2MODE/DATAC110 mF234C2 VOUT110 mF DEF1512U1 1ADJ2SW2Mde/Data EN2GNDVINEN1FB1DEF 1SW1PwPdL1VOUT211J4VOUT22109C410 µFEN287C611GND2EN16J5L2VOUT111J6VOUT1211C510 µFC711R2100 kΩJ7GND2JP2JP1PU 2345678910ADJ2VIN1JP4VIN11R1100 ΩJ3VINR5EN2VIN 02-003TPS62400DRCTPS62401DRCTPS62420DRC33 pFOpen33 pFOpenOpen10 µFOpenOpen10 3010-222LPS3015-222Reference Design Cookbook III for Power Management ProductsR4681 kΩ0Ω681 kΩR5R6R7182 kΩOpen182 kΩ332 kΩ100 kΩ332 kΩ332 kΩOpen332 kΩTexas Instruments 2Q 2008

TPS6240x11Dual Converter with High Efficiency and Few External ComponentsOutput Ripple Voltage: PWM/PFM Mode TransitionEfficiency (VOUT 2 1.8 V)100VOUT2 1.8 V90MODE/DATA 1 V/DivForced PWMMode80Enable Power Save Mode70VIN 2.7 VVIN 2.7 VEntering PFM ModeVoltage Positioning ActiveEfficiency %60VIN 3.6 VVIN 3.6 V50VIN 5 VVIN 5 VVOUT 20 mV/Div40Power Save ModeMODE/DATA 030Forced PWM ModeMODE/DATA 1VOUT 1.8 VIOUT 20 mA201000.010.11101001000Time Base - 200 µs/DivIOUT mAInternal Switching WaveformsVOUT 1 Change with EasyScale SW1 5 V/DivMODE/DATA2 V/ DivIcoil1 200 mA/DivSW2 5 V/DivVOUT1: 1.5 VVOUT1: 200 mV/DivVIN3: 3.8 VACKN offIOUT1 150 mAREG DEF 1 LowVOUT1: 1.1 VVIN 3.6 VVOUT1 :1.2 VVOUT2 :1.2 VIOUT1 IOUT1 100 mAIcoil2 200 mA/DivTime Base - 100 ns/DivTime Base - 100 µs/DivRegulation: PFM and PWM ModesStep Load Response: PWM Mode1.854MODE/DATA HighPWM Mode OperationVOUT 1.575 VVOUT2 1.8 V50 mV/DivMODE/DATA Low, PFM Mode, Voltage Positioning Active1.836PWM ModeOperationVOUTDC - V1.818VIN 5 VVIN 4.2 VVIN 3.6 VVIN 2.7 V1.800VIN 3.6 VVIN 2.7 VVIN 4.2 VVIN 5 VIOUT 200 mA/DivMODE/DATA High, Forced PWM Mode1.782IOUT1 360 mA1.764IOUT 40 mA1.7460.010.101101001000IOUT - mATime Base - 50 µs/DivTexas Instruments 2Q 2008Reference Design Cookbook III for Power Management Products

TPS401801260-A Three-Phase Synchronous Buck ConverterWeb Links:Reference Designs:DescriptionThe TPS40180 is a single synchronous buck controller that can be stacked for a multiphase output. The controller has an input voltage rating of 4.5 to 15 V for the chipVCC and 2 to 40 V for the power stage. It will work in many applications with 5,12 and 24 V inputs. The controller can be used to make single output systems up to8 phases. Current mode control uses the inductor DCR to minimize impacts on theefficiency. A current sense resistor could be used for improved accuracy. Additionally,the chip features a 700 mV-reference with better than 1% accuracy over eets, User’s Guides, Samples:www.ti.comPart Number Search: TPS40180This circuit uses three TPS40180s to create a three-phase synchronous buck. A buckis typically used when the output voltage is always lower than the input voltage. Keyconsiderations for this design are high output current and synchronized switching. TheTPS40180 provides a CLKIO pin that can be connected between devices to create up to8 phases that are optimally shifted. The converter in this case is 12 V to 1.8 V @ 60 A.SpecificationsParameterTest ConditionsMinTypMaxUnitInput Voltage10.81213.2VoltsOutput Voltage1.751.81.85Volts20mVP-P60AmpsOutput RippleOutput Current0Switching Frequency300kHz/PhasePMP2277 Master Phase SchematicVINR14.7 ΩCOMPTP10C3TP4J1C122 µF16 VC222 µF16 V470 pFTP3J2R2C5 1500 pFR5R5681 ΩTP14.75 kΩR649.9 ΩTP2VSHR10825 kΩGSNS43.2 kΩSSRTVINC131.0 µFR1268.1 kΩC120.047 µFENABLER133.01 kΩR1568.1 kΩR1682.5 kΩC140.01 µFC4 0.01 µFU1TPS40180RGE241FBCOMP232DIFFOCS–223VOUTCS NSR815 kΩC161.0 µFf 350 kHzQ1BSC042N03SCS1 R4VSNSC6TP5VOUTR716.2 kΩOpenCS1 C7PGOODCLKIOR110.022 µFL10.56 µHTP7J30ΩQ2BSC022N03SD1BAT64-02WC847 µFC154.7 µFR1429.4 kΩR910 ΩVOUT0.22 µFC947 µF C10Open4VTP8 C11680 µF4VJ4R1710 ΩTP6SSR32Open1 µFC17RTR33OpenGSNSR18BP5R3110.0 kΩ20 ΩJ51CLKIO2TP9PGOODReference Design Cookbook III for Power Management ProductsTexas Instruments 2Q 2008

TPS401801360-A Three-Phase Synchronous Buck ConverterPMP2277 Slave Phase SchematicVINR1COMPTP10C3R2C5 1500 pF681 ΩR5R5R649.9 Ω TP2TP14.75 kΩVSNSVSHR8825 kΩR1043.2 kΩGSNSSSRTVINC131.0 µFR1268.1 kΩC120.047 µFENABLER133.01 kΩR1568.1 kΩR1682.5 kΩC140.01 µFC161.0 µFTP4J14.7 ΩC122 µF16 VC222 µF16 V470 pF15 kΩC4U1TPS40180RGE1COMPFB2CS–DIFFO3CS VOUT4 GSNSPSFL5PGOODVSH6CLKIOILIM7BOOTSS8HDRVRT9 GNDSW10PVCCBP511LDRVUVLO12PGNDVDDPwPdf 350 kHzTP3J20.01 µF242322212019181716151413Q1BSC042N03SCS1 R4VSNSC6TP5VOUTCS1 R7C7PGOODCLKIOR1116.2 kΩOpen0.022 µFL10.56 µHTP7 J3R910 Ω0ΩQ2BSC022N03SD1BAT64-02WC847 µFC154.7 µFR1429.4 kΩVOUT0.22 µFC947 µF C10 Open4VTP8C11680 µF4VJ4R1710 ΩTP6SS1 µFC17RTGSNS20 ΩR18R32OpenBP5R33OpenR3110.0 kΩTP9J512CLKIOPGOODNotes:1. Built Using PMP2277 REVA BoardTransient ResponseControl Loop (Gain and Phase), Cross Over 37 KHzSwitch NodeEfficiency vs. Load Current (12 VIN)95Efficiency (%)9085807551015202530354045505560Load Current (A)Texas Instruments 2Q 2008Reference Design Cookbook III for Power Management Products

14UCD911240-A Digital-Power Synchronous Buck ConverterWeb Links:Reference Designs:DescriptionThe UCD9112 is a dual-phase synchronous buck digital PWM controller designed forpoint-of-load power applications. This device integrates dedicated circuitry for DC/DCdigital control loop with a microcontroller core, flash memory and a PMBus interfaceto support configurability, monitoring and management of a point of load. The UCD9112evaluation module comes with the Fusion Digital Power Designer graphical userinterface (GUI). This GUI allows the designer to configure the operating parametersand non-linear loop response of the power-supply controller. This configuration canthen be stored to the devices on chip non-volatile, User’s Guides, Samples:www.ti.comPart Number Search: UCD9112The UCD7230 synchronous buck driver has been designed to work with the UCD9112controller to provide a highly integrated digital power solution. In addition to 4-A outputdrive capability, the driver integrates current limit, short circuit protection as well asunder-voltage lockout protection. The UCD7230 also has a 3.3-V, 10-mA linear regulatorthat provides the supply current for the controller.SpecificationsParameterTest ConditionsMinTypMaxUnitInput Voltage RangeIOUT 30 A, VOUT 1 V51214VoltsOutput Voltage RangeVIN 12 V, IOUT 20 A0.41.04VoltsOutput CurrentVIN 12 V, VOUT 1 V040AmpsOutput Voltage RippleVIN 12 V, BW 20 KHz, IOUT 30 A 10mVUndershoot/OvershootVOUT 1 V, VIN 12 V, 50% Step Load 30mVLoad RegulationVIN 12 V, VOUT 1 V, IOUT from 0 A to 40 A 5mVEfficiencyVIN 12 V, VOUT 1 V, IOUT 30 A, Fsw 500 kHz85%UCD9112EVM SchematicVIN12VOUTVIN18 VDD3.3 VPVDDCS BIAS 16CLFCS 1719 SREOUT1 145RS

6 TPS40195 Efficiency ts TexasInstruments 2Q2008 Specifications .

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