Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - DC/DC voltage regulator Converter/amplifier VSON 14

VIN

VINA

PS/SYNC

GND

VOUT

PGND

1µH

2.5 V to

5.5V

OUT

3.3V

TPS63020

Power Good

Output

2X10µF

0.1µF

4X22µF

1MΩ

180kΩ

1MΩ

TPS63020

TPS63021

www.ti.com

SLVS916C –JULY 2010–REVISED MARCH 2013

HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 4-A SWITCHES

Check for Samples: TPS63020, TPS63021

FEATURES

• Smart Power Good Output

• Load Disconnect During Shutdown

• Up to 96% Efficiency

• Overtemperature Protection

• 3A Output Current at 3.3V in Step Down Mode

(VIN = 3.6V to 5.5V)

• Overvoltage Protection

• More than 2A Output Current at 3.3V in Boost

• Available in a 3 × 4-mm, QFN-14 Package

Mode (VIN > 2.5V)

APPLICATIONS

• Automatic Transition Between Step Down and

Boost Mode

• All Two-Cell and Three-Cell Alkaline, NiCd or

• Dynamic Input Current Limit NiMH or Single-Cell Li Battery Powered

Products

• Device Quiescent Current less than 50μA

• Ultra Mobile PCs and Mobile Internet Devices

• Input Voltage Range: 1.8V to 5.5V

• Digital Media Players

• Fixed and Adjustable Output Voltage Options

from 1.2V to 5.5V • DSCs and Camcorders

• Power Save Mode for Improved Efficiency at • Cellular Phones and Smartphones

Low Output Power

• Personal Medical Products

• Forced Fixed Frequency Operation at 2.4MHz

• Industrial Metering Equipment

and Synchronization Possible

• High Power LEDs

DESCRIPTION

The TPS6302x devices provide a power supply solution for products powered by either a two-cell or three-cell

alkaline, NiCd or NiMH battery, or a one-cell Li-Ion or Li-polymer battery. Output currents can go as high as 3A

while using a single-cell Li-Ion or Li-Polymer Battery, and discharge it down to 2.5V or lower. The buck-boost

converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification

to obtain maximum efficiency. At low load currents, the converter enters Power Save mode to maintain high

efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to

operate at a fixed switching frequency. The maximum average current in the switches is limited to a typical value

of 4A. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip.

The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the

battery. The device is packaged in a 14-pin QFN PowerPAD™ package measuring 3 × 4 mm (DSJ).

Please 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.

2PowerPAD is a trademark of Texas Instruments.

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.

Summary of content (29 pages)

PAGE 1
TPS63020 TPS63021 www.ti.com SLVS916C – JULY 2010 – REVISED MARCH 2013 HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 4-A SWITCHES Check for Samples: TPS63020, TPS63021 FEATURES • • • • • 1 • • 2 • • • • • • • • Up to 96% Efficiency 3A Output Current at 3.3V in Step Down Mode (VIN = 3.6V to 5.5V) More than 2A Output Current at 3.3V in Boost Mode (VIN > 2.
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TPS63020 TPS63021 SLVS916C – JULY 2010 – REVISED MARCH 2013 www.ti.com These 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. AVAILABLE DEVICE OPTIONS (1) TA –40°C to 85°C (1) (2) OUTPUT VOLTAGE DC/DC PACKAGE MARKING Adjustable PS63020 3.
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TPS63020 TPS63021 www.ti.com SLVS916C – JULY 2010 – REVISED MARCH 2013 RECOMMENDED OPERATING CONDITIONS MIN NOM MAX UNIT Supply voltage at VIN, VINA 1.8 5.
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TPS63020 TPS63021 SLVS916C – JULY 2010 – REVISED MARCH 2013 www.ti.com PIN ASSIGNMENTS PGND PGND PG PS/SYNC EN VIN VIN L1 L1 PGND PGND PGND PGND Po we rP ad VINA GND FB VOUT VOUT L2 L2 PGND PGND DSJ PACKAGE (TOP VIEW) Pin Functions PIN NAME NO.
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TPS63020 TPS63021 www.ti.
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TPS63020 TPS63021 SLVS916C – JULY 2010 – REVISED MARCH 2013 www.ti.com TYPICAL CHARACTERISTICS TABLE OF GRAPHS DESCRIPTION FIGURE Maximum output current Efficiency Output voltage Waveforms vs Input voltage (TPS63020, VOUT = 2.5 V / VOUT = 4.5 V) 1 vs Input voltage (TPS63021, VOUT = 3.3V) 2 vs Output current (TPS63020, Power Save Enabled, VOUT = 2.5 V / VOUT = 4.5 V) 3 vs Output current (TPS63020, Power Save Disabled, VOUT = 2.5V / VOUT = 4.
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TPS63020 TPS63021 www.ti.com SLVS916C – JULY 2010 – REVISED MARCH 2013 EFFICIENCY vs OUTPUT CURRENT 100 90 90 80 80 70 70 60 60 Efficiency (%) Efficiency (%) 100 EFFICIENCY vs OUTPUT CURRENT 50 40 30 50 40 30 VIN = 1.8V, VOUT = 2.5V VIN = 3.6V, VOUT = 2.5V VIN = 2.4V, VOUT = 4.5V VIN = 3.6V, VOUT = 4.5V 20 10 VIN = 1.8V, VOUT = 2.5V VIN = 3.6V, VOUT = 2.5V VIN = 2.4V, VOUT = 4.5V VIN = 3.6V, VOUT = 4.5V 20 10 TPS63020, Power Save Enabled 0 100µ 1m 1 4 1m Figure 4.
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TPS63020 TPS63021 SLVS916C – JULY 2010 – REVISED MARCH 2013 EFFICIENCY vs INPUT VOLTAGE 100 EFFICIENCY vs INPUT VOLTAGE 100 90 90 80 80 70 70 60 60 Efficiency (%) Efficiency (%) www.ti.com 50 40 30 50 40 30 IOUT = 10mA IOUT = 500mA IOUT = 1A IOUT = 2A 20 10 IOUT = 10mA IOUT = 500mA IOUT = 1A IOUT = 2A 20 10 TPS63020, VOUT = 2.5V, Power Save Enabled 0 1.8 2.2 2.6 3.4 3.8 4.2 Input Voltage (V) 4.6 5 5.4 2.2 2.6 3.4 3.8 4.2 Input Voltage (V) Figure 8.
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TPS63020 TPS63021 www.ti.com SLVS916C – JULY 2010 – REVISED MARCH 2013 EFFICIENCY vs INPUT VOLTAGE 100 90 90 80 80 70 70 60 60 Efficiency (%) Efficiency (%) 100 EFFICIENCY vs INPUT VOLTAGE 50 40 30 50 40 30 IOUT = 10mA IOUT = 500mA IOUT = 1A IOUT = 2A 20 10 IOUT = 10mA IOUT = 500mA IOUT = 1A IOUT = 2A 20 10 TPS63021, Power Save Enabled 0 1.8 2.6 2.2 2.6 3 3.4 3.8 4.2 Input Voltage (V) 4.6 5 TPS63021, Power Save Disabled 0 1.8 5.4 2.2 2.6 3 3.4 3.8 4.
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TPS63020 TPS63021 SLVS916C – JULY 2010 – REVISED MARCH 2013 3.4 www.ti.com OUTPUT VOLTAGE vs OUTPUT CURRENT LOAD TRANSIENT RESPONSE VIN = 3.6V Output Voltage 50 mV/div, AC Output Voltage (V) 3.35 3.3 Output Current 500 mA/div, DC 3.25 TPS63021 TPS63021, Power Save Disabled 3.2 100µ 1m 10m 100m Output Current (A) VIN = 2.4 V, IOUT = 500 mA to 1500 mA Time 2 ms/div 1 5 Figure 15. Figure 16.
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TPS63020 TPS63021 www.ti.com SLVS916C – JULY 2010 – REVISED MARCH 2013 STARTUP AFTER ENABLE Enable 2 V/div, DC STARTUP AFTER ENABLE Enable 2 V/div, DC Output Voltage 1 V/div, DC Output Voltage 1 V/div, DC Inductor Current 500 mA/div, DC Inductor Current 1 A/div, DC Voltage at L1 5 V/div, DC TPS63021 Voltage at L2 5 V/div, DC VIN = 2.4 V, RL = 2.2 W TPS63021 Time 100 ms/div VIN = 4.2 V, RL = 2.2 W Time 40 ms/div Figure 20. Figure 19.
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TPS63020 TPS63021 SLVS916C – JULY 2010 – REVISED MARCH 2013 www.ti.com PARAMETER MEASUREMENT INFORMATION L1 1.5µH VOUT VIN 2.5 V to 5.5V VIN C1 2X10µF L2 L1 FB VINA C3 3.3V1.5A VOUT R1 R3 1MΩ 1MΩ EN 0.1µF C2 3X22µF PS/SYNC PG GND PGND R2 180kΩ Power Good Output TPS63020 Table 1. List of Components REFERENCE DESCRIPTION MANUFACTURER TPS63020 or TPS63021 Texas Instruments L1 1.5 μH, 4 mm x 4 mm x 2 mm XFL4020-152ML, Coilcraft C1 2 × 10 μF 6.
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TPS63020 TPS63021 www.ti.com SLVS916C – JULY 2010 – REVISED MARCH 2013 DETAILED DESCRIPTION The controller circuit of the device is based on an average current mode topology. The controller also uses input and output voltage feedforward. Changes of input and output voltage are monitored and immediately can change the duty cycle in the modulator to achieve a fast response to those errors. The voltage error amplifier gets its feedback input from the FB pin.
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TPS63020 TPS63021 SLVS916C – JULY 2010 – REVISED MARCH 2013 www.ti.com TM Figure 21. Average Current Mode Control Power Save Mode and synchronization The PS/SYNC pin can be used to select different operation modes. Power Save Mode is used to improve efficiency at light load. To enable power-save, PS/SYNC must be set low. If PS/SYNC is set low then Power Save Mode is entered when the average inductor current gets lower then about 100mA.
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TPS63020 TPS63021 www.ti.com SLVS916C – JULY 2010 – REVISED MARCH 2013 Heavy Load transient step 3.5% PFM mode at light load current Comparator High 3% Comparator low 2.5% Vo PWM mode Absolute Voltage drop with positioning Figure 22. Power-Save Mode Thresholds and Dynamic Voltage Positioning Dynamic voltage positioning As detailed in Figure 22, the output voltage is typically 3% above the nominal output voltage at light load currents, as the device is in Power Save Mode.
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TPS63020 TPS63021 SLVS916C – JULY 2010 – REVISED MARCH 2013 www.ti.com Power Good The device has a built in power good function to indicate whether the output voltage is regulated properly. As soon as the average inductor current gets limited to a value below the current the voltage regulator demands for maintaining the output voltage the power good output gets low impedance.
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TPS63020 TPS63021 www.ti.com SLVS916C – JULY 2010 – REVISED MARCH 2013 APPLICATION INFORMATION DESIGN PROCEDURE The TPS6302X series of buck-boost converter has internal loop compensation. Therefore, the external L-C filter has to be selected to work with the internal compensation. As a general rule of thumb, the product L×C should not move over a wide range when selecting a different output filter.
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TPS63020 TPS63021 SLVS916C – JULY 2010 – REVISED MARCH 2013 www.ti.com Table 2. Inductor Selection VENDOR INDUCTOR SERIES Coilcraft XFL4020 Toko FDV0530S Capacitor selection Input Capacitor At least a 10μF input capacitor is recommended to improve transient behavior of the regulator and EMI behavior of the total power supply circuit. A ceramic capacitor placed as close as possible to the VIN and PGND pins of the IC is recommended.
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TPS63020 TPS63021 www.ti.com SLVS916C – JULY 2010 – REVISED MARCH 2013 LAYOUT CONSIDERATIONS For all switching power supplies, the layout is an important step in the design, especially at high peak currents and high switching frequencies. If the layout is not carefully done, the regulator could show stability problems as well as EMI problems. Therefore, use wide and short traces for the main current path and for the power ground tracks.
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TPS63020 TPS63021 SLVS916C – JULY 2010 – REVISED MARCH 2013 www.ti.com TYPICAL APPLICATION L1 1µH VOUT VIN 2.5 V to 5.5V L2 L1 VIN C1 C3 R1 FB VINA 2X10µF 3.3V2A VOUT PS/SYNC 4X22µF 4.7pF R2 PG GND C2 1MΩ 68kΩ C4 EN 0.1µF R3 R1 300kΩ 53kΩ PGND Power Good Output TPS63020 Figure 24. Application Circuit 2A Load Current Capacitor C4 and resistor R1 are added for improved load transient performance. L1 1.5µH VOUT VIN 2.5 V to 5.5V VIN C1 2X10µF L2 L1 FB VINA C3 0.1µF 3.
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TPS63020 TPS63021 www.ti.com SLVS916C – JULY 2010 – REVISED MARCH 2013 REVISION HISTORY Changes from Original (April 2010) to Revision A Page • Changed the List Of Components table. C1 and C2 orderable number From: GRM188R60J106KME84D To: GRM188R60J106ME84D ................................................................................................................................................... 12 • Updated Figure 23 - PCB Layout Suggestion ....................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Feb-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing TPS63020DSJR VSON DSJ 14 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3000 330.0 12.4 3.3 4.3 1.1 8.0 12.0 Q1 TPS63020DSJT VSON DSJ 14 250 180.0 12.4 3.3 4.3 1.1 8.0 12.0 Q1 TPS63021DSJR VSON DSJ 14 3000 330.0 12.4 3.3 4.3 1.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Feb-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS63020DSJR VSON DSJ 14 3000 367.0 367.0 35.0 TPS63020DSJT VSON DSJ 14 250 210.0 185.0 35.0 TPS63021DSJR VSON DSJ 14 3000 367.0 367.0 35.0 TPS63021DSJT VSON DSJ 14 250 210.0 185.0 35.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.