TPS6188数据手册(TPS61088).pdf

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1 Features

2 Applications

3 Description

Table of Contents

4 Revision History

5 Pin Configuration and Functions

6 Specifications

6.1 Absolute Maximum Ratings

6.2 ESD Ratings

6.3 Recommended Operating Conditions

6.4 Thermal Information

6.5 Electrical Characteristics

6.6 Typical Characteristics

7 Detailed Description

7.1 Overview

7.2 Functional Block Diagram

7.3 Feature Description

7.3.1 Enable and Startup

7.3.2 Undervoltage Lockout (UVLO)

7.3.3 Adjustable Switching Frequency

7.3.4 Adjustable Peak Current Limit

7.3.5 Overvoltage Protection

7.3.6 Thermal Shutdown

7.4 Device Functional Modes

7.4.1 Operation

7.4.1.1 PWM Mode

7.4.1.2 PFM Mode

8 Application and Implementation

8.1 Application Information

8.2 Typical Application

8.2.1 Design Requirements

8.2.2 Detailed Design Procedure

8.2.2.1 Custom Design with WEBENCH Tools

8.2.2.2 Setting Switching Frequency

8.2.2.3 Setting Peak Current Limit

8.2.2.4 Setting Output Voltage

8.2.2.5 Inductor Selection

8.2.2.6 Input Capacitor Selection

8.2.2.7 Output Capacitor Selection

8.2.2.8 Loop Stability

8.2.3 Application Curves

9 Power Supply Recommendations

10 Layout

10.1 Layout Guidelines

10.2 Layout Example

10.3 Thermal Considerations

11 Device and Documentation Support

11.1 Custom Design with WEBENCH Tools

11.2 Receiving Notification of Documentation Updates

11.3 Device Support

11.3.1 Third-Party Products Disclaimer

11.4 Community Resources

11.5 Trademarks

11.6 Electrostatic Discharge Caution

11.7 Glossary

12 Mechanical, Packaging, and Orderable Information

TPS61088 10-A Fully-Integrated Synchronous Boost Converter TPS61088 SLVSCM8C –MAY 2015–REVISED FEBRUARY 2019 Input Voltage Range: 2.7 to 12 V 1 Features 1• • Output Voltage Range: 4.5 to 12.6 V • • Up to 91% Efficiency at VIN = 3.3 V, VOUT = 9 V, 10-A Switch Current and IOUT = 3 A • Mode Selection Between PFM Mode and Forced PWM Mode at Light Load 1.0 µA Current into VIN Pin during Shutdown • • Resistor-Programmable Switch Peak Current Limit • Adjustable Switching Frequency: 200 kHz to 2.2 MHz • Programmable Soft Start • Output Overvoltage Protection at 13.2 V • Cycle-by-Cycle Overcurrent Protection • Thermal Shutdown • • Create a Custom Design Using the TPS61088 4.50-mm × 3.50-mm 20-Pin VQFN Package with the WEBENCH Power Designer 2 Applications • Portable POS terminal • Bluetooth™ Speaker • E-Cigarette • Thunderbolt Interface • Quick Charge Power Bank In moderate to heavy load condition, 3 Description fully The TPS61088 is a high power density, integrated synchronous boost converter with a 11-mΩ power switch and a 13-mΩ rectifier switch to provide a high efficiency and small size solution in portable systems. The TPS61088 has wide input voltage range from 2.7 V to 12 V to support applications with single cell or two cell Lithium batteries. The device has 10-A switch current capability and is capable of providing an output voltage up to 12.6 V. The TPS61088 uses adaptive constant off-time peak topology to regulate the output current control voltage. the TPS61088 works in the pulse width modulation (PWM) mode. In light load condition, the device has two operation modes selected by the MODE pin. One is the pulse frequency modulation (PFM) mode to improve the efficiency and another one is the forced PWM mode to avoid application problems caused by low switching frequency. The switching frequency in the PWM mode is adjustable ranging from 200 kHz to 2.2 MHz by an external resistor. The TPS61088 also implements a programmable soft-start function and an adjustable switching peak current limit function. In addition, 13.2-V output overvoltage protection, cycle-by-cycle overcurrent protection, and thermal shutdown protection. The TPS61088 is available in a 4.50-mm × 3.50-mm 20-pin VQFN package. provides device the Device Information(1) PART NUMBER BODY SIZE (NOM) TPS61088 4.50 mm × 3.50 mm (1) For all available packages, see the orderable addendum at PACKAGE VQFN (20) the end of the data sheet. Typical Application Circuit 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. VINENVOUTFBR1R5VCCFSWSWR2COMPC5AGNDPGNDC6L1C1C2C3R3BOOTVINILIMR4SSC7C4VOUTMODEONOFFProductFolderOrderNowTechnicalDocumentsTools &SoftwareSupport &Community

TPS61088 SLVSCM8C –MAY 2015–REVISED FEBRUARY 2019 www.ti.com Table of Contents 1 Features.................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Revision History..................................................... 2 5 Pin Configuration and Functions ......................... 3 6 Specifications......................................................... 4 6.1 Absolute Maximum Ratings ...................................... 4 6.2 ESD Ratings.............................................................. 4 6.3 Recommended Operating Conditions....................... 4 6.4 Thermal Information.................................................. 4 6.5 Electrical Characteristics........................................... 5 6.6 Typical Characteristics.............................................. 6 7 Detailed Description .............................................. 8 7.1 Overview ................................................................... 8 7.2 Functional Block Diagram ......................................... 9 7.3 Feature Description................................................... 9 7.4 Device Functional Modes........................................ 11 8 Application and Implementation ........................ 13 8.1 Application Information............................................ 13 8.2 Typical Application .................................................. 13 9 Power Supply Recommendations...................... 20 10 Layout................................................................... 20 10.1 Layout Guidelines ................................................. 20 10.2 Layout Example .................................................... 20 10.3 Thermal Considerations........................................ 21 11 Device and Documentation Support ................. 22 11.1 Custom Design with WEBENCH Tools................. 22 11.2 Receiving Notification of Documentation Updates 22 11.3 Device Support...................................................... 22 11.4 Community Resources.......................................... 22 11.5 Trademarks ........................................................... 22 11.6 Electrostatic Discharge Caution............................ 22 11.7 Glossary ................................................................ 23 12 Mechanical, Packaging, and Orderable Information ........................................................... 23 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision B (September) to Revision C Page • Corrected spelling of 'resister' to 'resistor' in the Pin Functions table. ................................................................................... 3 • Added caption to Functional Block Diagram as auto-number Figure 10................................................................................ 9 • Added cross-reference hyperlink in the Enable and Startup section pointing to C7 reference in Figure 12. ........................ 9 • Inserted missing cross-reference hyperlink in Setting Output Voltage section pointing to Figure 12 circuit in the Typical Application section. .................................................................................................................................................. 14 Changes from Revision A (May 2015) to Revision B Page • Added thermal information for EVM configuration ................................................................................................................. 4 Changes from Original (May 2015) to Revision A Page • Updated device status to production data ............................................................................................................................. 1 • Updated VCCLPH and VCCLPL typical voltage ............................................................................................................................ 5 • Fixed legend of Figure 2 and Figure 4 from input to output .................................................................................................. 6 2 Submit Documentation Feedback Copyright © 2015–2019, Texas Instruments Incorporated Product Folder Links: TPS61088

www.ti.com 5 Pin Configuration and Functions TPS61088 SLVSCM8C –MAY 2015–REVISED FEBRUARY 2019 RHL Package 20 Pin VQFN With Thermal Pad Top View PIN NAME NUMBER VCC EN FSW SW BOOT VIN SS NC MODE VOUT FB COMP ILIM AGND PGND 1 2 3 4, 5, 6, 7 8 9 10 11, 12 13 14, 15, 16 17 18 19 20 21 Pin Functions DESCRIPTION Output of the internal regulator. A ceramic capacitor of more than 1.0 µF is required between this pin and ground. Enable logic input. Logic high level enables the device. Logic low level disables the device and turns it into shutdown mode. The switching frequency is programmed by a resistor between this pin and the SW pin. The switching node pin of the converter. It is connected to the drain of the internal low-side power MOSFET and the source of the internal high-side power MOSFET. Power supply for high-side MOSFET gate driver. A ceramic capacitor of 0.1 µF must be connected between this pin and the SW pin IC power supply input Soft-start programming pin. An external capacitor sets the ramp rate of the internal error amplifier's reference voltage during soft-start No connection inside the device. Connect these two pins to ground plane on the PCB for good thermal dissipation Operation mode selection pin for the device in light load condition. When this pin is connected to ground, the device works in PWM mode. When this pin is left floating, the device works in PFM mode. Boost converter output Voltage feedback. Connect to the center tape of a resistor divider to program the output voltage. Output of the internal error amplifier, the loop compensation network should be connected between this pin and the AGND pin. Adjustable switch peak current limit. An external resistor should be connected between this pin and the AGND pin. Signal ground of the IC Power ground of the IC. It is connected to the source of the low-side MOSFET. I/O O I I I O I O — I O I O O — — Copyright © 2015–2019, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: TPS61088 ENSWSWSWBOOTVINFSWSWCOMPFBILIMVOUTVOUTVOUTMODEPGNDVCCRHLNCSSNCAGND

TPS61088 SLVSCM8C –MAY 2015–REVISED FEBRUARY 2019 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature (unless otherwise noted) (1) Voltage(2) BOOT VIN, SW, FSW, VOUT EN, VCC, SS, COMP, MODE ILIM, FB Operating junction temperature Storage temperature www.ti.com UNIT V MIN –0.3 –0.3 –0.3 –0.3 –40 –65 MAX SW + 7 14.5 7 3.6 150 150 TJ Tstg (1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings °C °C only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. (2) All voltage values are with respect to network ground terminal. 6.2 ESD Ratings V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) Charged device model (CDM), per JEDEC specification JESD22-C101, all pins(2) (1) (2) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. VALUE ±2000 ±500 UNIT V 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) VIN VOUT L CI CO TJ Input voltage range Output voltage range Inductance, effective value Input capacitance, effective value Output capacitance, effective value Operating junction temperature 6.4 Thermal Information THERMAL METRIC(1) MIN 2.7 4.5 0.47 10 6.8 –40 NOM 2.2 47 MAX 12 12.6 10 1000 125 UNIT V V µH µF µF °C TPS61088 RHL 20 Pins Standard TPS61088 RHL 20 Pins UNIT Junction-to-ambient thermal resistance Junction-to-case (top) thermal resistance Junction-to-board thermal resistance Junction-to-top characterization parameter Junction-to-board characterization parameter Junction-to-case (bottom) thermal resistance RθJA RθJC(top) RθJB ψJT ψJB RθJC(bot) (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application °C/W °C/W °C/W °C/W °C/W °C/W 38.8 39.8 15.5 0.6 15.5 3.1 report, SPRA953. EVM 29.7 N/A N/A 0.5 9.8 N/A 4 Submit Documentation Feedback Copyright © 2015–2019, Texas Instruments Incorporated Product Folder Links: TPS61088

www.ti.com TPS61088 SLVSCM8C –MAY 2015–REVISED FEBRUARY 2019 6.5 Electrical Characteristics Minimum and maximum values are at VIN = 2.7 V to 5.5 V and TJ = -40°C to 125°C. Typical values are at VIN = 3.6 V and TJ = 25°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIN rising VIN falling VCC falling IC enabled, VEN = 2 V, no load, RILIM = 100 kΩ , VFB = 1.3 V, VOUT = 12 V, TJ up to 85°C IC disabled, VEN = 0 V, no load, no feedback resistor divider connected to the VOUT pin, TJ up to 85°C IVCC = 5 mA, VIN = 8 V VCC = 6 V VCC = 6 V VCC = 6 V VCC = 6 V VCC = 6 V VCC = 6 V PWM mode PFM mode VFB = 1.2 V 2.7 0.4 1.5 4.5 1.186 POWER SUPPLY VIN VIN_UVLO VIN_HYS VCC_UVLO IQ ISD Input voltage range Undervoltage lockout (UVLO) threshold VIN UVLO hysteresis UVLO threshold Operating quiescent current from the VIN pin Operating quiescent current from the VOUT pin Shutdown current into the VIN pin VCC regulation VCC EN AND MODE INPUT VENH VENL REN VMODEH VMODEL RMODE OUTPUT VOUT EN high threshold voltage EN low threshold voltage EN internal pull-down resistance MODE high threshold voltage MODE low threshold voltage MODE internal pull-up resistance Output voltage range VREF Reference voltage at the FB pin FB pin leakage current Soft-start charging current ILKG_FB ISS ERROR AMPLIFIER ISINK ISOURCE VCCLPH VCCLPL GEA POWER SWITCH 12 2.7 2.5 3 250 3 1.2 4.0 12.6 1.222 100 V V V mV V µA µA µA V V V kΩ V V kΩ V V nA μA µA µA V 18 16.5 13 11.4 µA/V mΩ mΩ A A V kHz ns 180 2.4 200 2.1 1 110 1 5.8 800 800 1.204 1.212 5 20 20 2.3 1.4 190 13 11 11.9 10.3 1.204 500 90 COMP pin sink current COMP pin source current High clamp voltage at the COMP pin VFB = 1 V, RILIM = 100 kΩ Low clamp voltage at the COMP pin Error amplifier transconductance VFB = VREF +200 mV, VCOMP = 1.5 V VFB = VREF –200 mV, VCOMP = 1.5 V VFB = 1.5 V, RILIM = 100 kΩ, MODE pin floating VCOMP = 1.5 V RDS(on) High-side MOSFET on-resistance Low-side MOSFET on-resistance VCC = 6 V VCC = 6 V CURRENT LIMIT ILIM Peak switch current limit in PFM mode Peak switch current limit in FPWM mode Reference voltage at the ILIM pin VILIM SWITCHING FREQUENCY ƒSW tON_min PROTECTION Switching frequency Minimum on-time RILIM = 100 kΩ, VCC = 6 V, MODE pin floating RILIM = 100 kΩ, VCC = 6 V, MODE pin short to ground 10.6 9.0 RFREQ = 301 kΩ, VIN = 3.6 V, VOUT = 12 V RFREQ = 301 kΩ, VIN = 3.6 V, VOUT = 12 V VOVP Output overvoltage protection threshold VOUT rising 12.7 13.2 13.6 V Copyright © 2015–2019, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: TPS61088

TPS61088 SLVSCM8C –MAY 2015–REVISED FEBRUARY 2019 www.ti.com Electrical Characteristics (continued) Minimum and maximum values are at VIN = 2.7 V to 5.5 V and TJ = -40°C to 125°C. Typical values are at VIN = 3.6 V and TJ = 25°C PARAMETER TEST CONDITIONS MIN Output overvoltage protection VOVP_HYS hysteresis THERMAL SHUTDOWN TSD TSD_HYS Thermal shutdown threshold Thermal shutdown hysteresis 6.6 Typical Characteristics VOUT falling below VOVP TJ rising TJ falling below TSD TYP 0.25 150 20 MAX UNIT V °C °C Figure 1. Efficiency vs Output Current, VOUT = 9 V, FPWM Figure 2. Efficiency vs Output Current, VIN = 3.6 V, FPWM Figure 3. Efficiency vs Output Current, VOUT = 9 V, PFM Figure 4. Efficiency vs Output Current, VIN = 3.6 V, PFM 6 Submit Documentation Feedback Copyright © 2015–2019, Texas Instruments Incorporated Product Folder Links: TPS61088 Output Current (A)Efficiency0.00010.0010.010.10.20.5123571020%30%40%50%60%70%80%90%100%D0033-V Input3.6-V Input4.2-V InputOutput Current (A)Efficiency0.00010.0010.010.10.20.5123571020%30%40%50%60%70%80%90%100%D0045-V Output9-V Output12-V OutputOutput Current (A)Efficiency0.00010.0010.010.10.20.51235710010%20%30%40%50%60%70%80%90%100%D0013-V Input3.6-V Input4.2-V InputOutput Current (A)Efficiency0.00010.0010.010.10.20.51235710010%20%30%40%50%60%70%80%90%100%D0025-V Output9-V Output12-V Output

www.ti.com Typical Characteristics (continued) TPS61088 SLVSCM8C –MAY 2015–REVISED FEBRUARY 2019 Figure 5. Current Limit vs Setting Resistance Figure 6. Switching Frequency vs Setting Resistance Figure 7. Reference Voltage vs Temperature Figure 8. Quiescent Current vs Temperature Figure 9. Shutdown Current vs Temperature Copyright © 2015–2019, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: TPS61088 Temperature (°C)Shutdown Current (PA)-40-2002040608010000.10.20.30.40.50.60.70.80.91D009Temperature (°C)Reference Votlage (V)-40-200204060801001201301.21.2011.2021.2031.2041.2051.2061.2071.2081.2091.21D007 Temperature (°C)Quiescent Current (PA)-40-30-20-100102030405060708090020406080100120140D008Resistance (k:)Current Limit (A)8012016020024028032036002468101214D005PFM ModeFPWM ModeResistance (k:)Frequency (kHz)010020030040050060070080090005001000150020002500D006

TPS61088 SLVSCM8C –MAY 2015–REVISED FEBRUARY 2019 7 Detailed Description www.ti.com 7.1 Overview The TPS61088 is a fully-integrated synchronous boost converter with a 11-mΩ power switch and a 13-mΩ rectifier switch to output high power from a single cell or two-cell Lithium batteries. The device is capable of providing an output voltage of 12.6 V and delivering up to 30-W power from a single cell Lithium battery. The TPS61088 uses adaptive constant off-time peak current control topology to regulate the output voltage. In moderate-to-heavy load condition, the TPS61088 works in the quasi-constant frequency pulse width modulation (PWM) mode. The switching frequency in the PWM mode is adjustable ranging from 200 kHz to 2.2 MHz by an external resistor. In light load condition, the device has two operation modes selected by the MODE pin. When the MODE pin is left floating, the TPS61088 works in the pulse frequency modulation (PFM) mode. The PFM mode brings high efficiency at the light load. When the MODE pin is short to ground, the TPS61088 works in the forced PWM mode (FPWM). The FPWM mode can avoid the acoustic noise and other problems caused by the low switching frequency. The TPS61088 implements cycle-by-cycle current limit to protect the device from overload conditions during boost switching. The switch peak current is programmable by an external resistor. The TPS61088 uses external loop compensation, which provides flexibility to use different inductors and output capacitors. The adaptive off-time peak current control scheme gives excellent transient line and load response with minimal output capacitance. limit 8 Submit Documentation Feedback Copyright © 2015–2019, Texas Instruments Incorporated Product Folder Links: TPS61088

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