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100

100m 1 10 100 1k 10k

I load (mA)

Efficiency (%)

= 3.7 V

= 4.2 V

= 5 V

OUT

= 3.3 V

L = 1 µH

f = 1.4 MHz

G002

Vout

1.8V/3A

Vin

2.5V to 6V

PVIN

EN FB

10 Fm

470nH

22 Fm

TPS62090

Power Good

AVIN

500k

AGND

10nF

VOS

FREQ

10nF

PGND PGND

14 15

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Folder

Sample &

Buy

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Documents

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TPS62090

TPS62091

TPS62092

TPS62093

SLVSAW2B –MARCH 2012–REVISED APRIL 2014

TPS6209x 3A High Efficient Synchronous Step Down Converter with DCS ™ Control

1 Features 3 Description

The TPS6209x device family is a high frequency

• 2.5 V to 6 V Input Voltage Range

synchronous step down converter optimized for small

• DCS™ Control

solution size, high efficiency and suitable for battery

• 95% Converter Efficiency

powered applications. To maximize efficiency, the

converter operates in PWM mode with a nominal

• Power Save Mode

switching frequency of 2.8 MHz/1.4 MHz and

• 20 µA Operating Quiescent Current

automatically enters Power Save Mode operation at

• 100% Duty Cycle for Lowest Dropout

light load currents. When used in distributed power

supplies and point of load regulation, the device

• 2.8 MHz/1.4 MHz Typical Switching Frequency

allows voltage tracking to other voltage rails and

• 0.8 V to V

Adjustable Output Voltage

tolerates output capacitors ranging from 10 µF up to

• Fixed Output Voltage Versions

150 µF and beyond. Using the DCS™ Control

• Output Discharge Function

topology the device achieves excellent load transient

performance and accurate output voltage regulation.

• Adjustable Softstart

• Two Level Short Circuit Protection

The output voltage start-up ramp is controlled by the

softstart pin, which allows operation as either a

• Output Voltage Tracking

standalone power supply or in tracking configurations.

• Wide Output Capacitance Selection

Power sequencing is also possible by configuring the

Enable and Power Good pins. In Power Save Mode,

2 Applications

the device operates at typically 20 µA quiescent

current. Power Save Mode is entered automatically

• Distributed Power Supplies

and seamlessly maintaining high efficiency over the

• Notebook, Netbook Computers

entire load current range.

• Hard Disk Drivers (HDD)

Device Information

(1)

• Solid State Drives (SSD)

DEVICE NAME PACKAGE BODY SIZE

• Processor Supply

TPS62090

• Battery Powered Applications

TPS62091

QFN (16) 3mm x 3mm

TPS62092

TPS62093

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

4 Simplified Schematic

Efficiency vs Output Current

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.

Summary of content (28 pages)

PAGE 1
Product Folder Sample & Buy Support & Community Tools & Software Technical Documents TPS62090, TPS62091, TPS62092, TPS62093 SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 TPS6209x 3A High Efficient Synchronous Step Down Converter with DCS™ Control 1 Features 3 Description • • • • • • • • • • • • • • The TPS6209x device family is a high frequency synchronous step down converter optimized for small solution size, high efficiency and suitable for battery powered applications.
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TPS62090, TPS62091, TPS62092, TPS62093 SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 www.ti.com Table of Contents 1 2 3 4 5 6 7 8 9 Features .................................................................. Applications ........................................................... Description ............................................................. Simplified Schematic............................................. Revision History.....................................................
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TPS62090, TPS62091, TPS62092, TPS62093 www.ti.com SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 Device Comparison Table DEVICE NUMBER OUTPUT VOLTAGE TPS62090 Adjustable TPS62091 3.3 V TPS62092 2.5 V TPS62093 1.8 V 6 Pin Configuration and Functions PG 4 EN 14 13 12 11 Exposed Thermal Pad* 10 5 6 7 8 CN 3 PGND FREQ 15 CP 2 PGND SW 16 AGND 1 FB SW VOS 16 PIN QFN TOP VIEW 9 PVIN PVIN AVIN SS NOTE: *The exposed Thermal Pad is connected to AGND.
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TPS62090, TPS62091, TPS62092, TPS62093 SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 www.ti.com 7 Specifications 7.1 Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) VALUE MIN Voltage range Power Good sink current –0.3 7 SW, PG –0.3 VIN+0.
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TPS62090, TPS62091, TPS62092, TPS62093 www.ti.com SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 7.5 Electrical Characteristics VIN = 3.6V, TA = –40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VIN Input voltage range IQIN Quiescent current Not switching, FB = FB +5 %, Into PVIN and AVIN 20 Isd Shutdown current Into PVIN and AVIN 0.6 5 Undervoltage lockout threshold VIN falling 2.2 2.3 UVLO 2.5 2.
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TPS62090, TPS62091, TPS62092, TPS62093 SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 www.ti.com 70 1600 60 1400 1200 50 Frequency (kHz) Resistance (m:) 7.6 Typical Characteristics 40 30 20 TA85C = 85oC 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Input Voltage (V) 800 600 VIN = 3.6 V VIN = 4.2 V VIN = 2.8 V 200 TA-40C = -40oC 0 VOUT = 1.8 V L = 1 µH f = 1.4 MHz 400 TA25C = 25oC 10 1000 0 6.5 0 Figure 1. High Side FET On-Resistance vs Input Voltage 3500 1.
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TPS62090, TPS62091, TPS62092, TPS62093 www.ti.com SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 8 Parameteric Measurement Information TPS62090 Vin 2.5V to 6V 12 11 C1 10 PVIN L1 SW PVIN SW AVIN VOS 13 EN C3 7 8 C4 FB 1 Vout R1 2 C2 16 R2 5 R3 PG 4 CP CN FREQ 9 SS 3 Power Good Vin or GND AGND 6 PGND PGND 14 15 Figure 7. Parametric Measurement Circuit List of Components REFERENCE DESCRIPTION TPS62090 High efficient step down converter Texas Instruments L1 Inductor: 1uH, 0.
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TPS62090, TPS62091, TPS62092, TPS62093 SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 www.ti.com 9 Detailed Description 9.1 Overview The TPS6209x synchronous switched mode converters are based on DCS™ Control (Direct Control with Seamless transition into Power Save Mode). This is an advanced regulation topology that combines the advantages of hysteretic and voltage mode control.
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TPS62090, TPS62091, TPS62092, TPS62093 www.ti.com SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 9.3 Feature Description 9.3.1 Power Good Output (PG) The power good output is low when the output voltage is below its nominal value. The power good will become high impedance once the output is within 5% of regulation. The PG pin is an open drain output and is specified to typically sink up to 1 mA. This output requires a pull-up resistor to be monitored properly.
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TPS62090, TPS62091, TPS62092, TPS62093 SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 www.ti.com Device Functional Modes (continued) In Power Save Mode the output voltage rises slightly above the nominal output voltage in PWM mode, as shown in Figure 16 and Figure 17. This effect can be reduced by increasing the output capacitance or the inductor value. This effect can also be reduced by programming the output voltage of the TPS62090 lower than the target value.
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TPS62090, TPS62091, TPS62092, TPS62093 www.ti.com SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 Device Functional Modes (continued) 9.4.5 Start-up Tracking (SS) The softstart pin can also be used to implement output voltage tracking with other supply rails. The internal reference voltage follows the voltage at the softstart pin with a fraction of 1.56 until the internal reference voltage of 0.8 V is reached. The softstart pin can be used to implement output voltage tracking as shown in Figure 8.
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TPS62090, TPS62091, TPS62092, TPS62093 SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 www.ti.com 10 Application and Implementation 10.1 Application Information The TPS6209x 3 A family of devices, are high frequency synchronous step down converters optimized for small solution size, high efficiency and suitable for battery powered applications. 10.2 Typical Applications L1 470nH TPS62090 Vin 2.5V to 6V 12 11 C1 10mF 10 C3 10nF SW PVIN SW AVIN VOS 13 EN 7 8 C4 10nF PVIN Vout 1.
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TPS62090, TPS62091, TPS62092, TPS62093 www.ti.com SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 Table 2. Output Filter Selection (1.4 MHz Operation, FREQ = VIN) INDUCTOR VALUE [µH] (1) OUTPUT CAPACITOR VALUE [µF] (2) 10 22 47 100 150 √ √ √ √ 1.0 √ √ (3) √ √ √ 2.2 √ √ √ √ √ 0.47 3.3 (1) (2) (3) Inductor tolerance and current de-rating is anticipated. The effective inductance can vary by +20% and –30%. Capacitance tolerance and bias voltage de-rating is anticipated.
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TPS62090, TPS62091, TPS62092, TPS62093 SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 10.2.2.2 www.ti.com Input and Output Capacitor Selection For best output and input voltage filtering, low ESR ceramic capacitors are recommended. The input capacitor minimizes input voltage ripple, suppresses input voltage spikes and provides a stable system rail for the device. A 22 µF or larger input capacitor is recommended for 1.4 MHz operation frequency. For 2.
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TPS62090, TPS62091, TPS62092, TPS62093 www.ti.com SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 100 100 95 95 90 90 85 85 Efficiency (%) Efficiency (%) 10.2.2.4 Application Curves 80 75 70 65 60 55 50 100m 80 75 70 65 VOUT = 3.3 V L = 1 µH f = 1.4 MHz 1 VIN = 3.7 V VIN = 4.
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TPS62090, TPS62091, TPS62092, TPS62093 SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 www.ti.com 1.83 1.82 VIN = 5.0 V VIN = 4.2 V VIN = 3.7 V 1.825 Output Voltage (V) Output Voltage (V) 1.825 1.83 VOUT = 1.8 V L = 1 µH f = 1.4 MHz 1.815 1.81 1.805 1.8 1.795 1.82 1.815 1.81 1.805 1.8 1 10 100 I load (mA) 1k 10k 1.79 100m G007 Figure 16. Output Voltage vs Load Current Vsw 2 V/div Vo 20 mV/div Vo 20 mV/div Vin = 3.7 V Vo=1.8 V/3 A f = 1.
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TPS62090, TPS62091, TPS62092, TPS62093 www.ti.com SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 Vo 20 mV/div VEN 2 V/div Vo 1 V/div Io 2 A/div Iinductor 500 mA/div Vin = 3.7 V Vo = 1.8 V f = 2.8 MHz, L = 1 µH Vin = 3.7 V Vo = 1.8 V/600 mA f = 2.8 MHz, L = 1 µH Css = 10 nF Iinductor 50 mA/div 200 µs/div 400 µs/div G016 Figure 22. Load Sweep Figure 23. Start-Up Vin = 3.7 V Vo = 1.8 V/no load f = 2.8 MHz, L = 1 µH Io 2 A/div Iinductor 200 mA/div Iinductor 1 A/div 2 ms/div Vin = 3.7 V Vo = 1.
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TPS62090, TPS62091, TPS62092, TPS62093 SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 www.ti.com Vo 50 mV/div Vo 50 mV/div Iinductor 1 A/div Io 1 V/div Vin = 3.7 V Vo = 1.8 V, 0.3 A to 2.5 A f = 1.4 MHz, L = 1 µH Co = 22 µF 40 µs/div Figure 28. Load Transient Response Iinductor 500 A/div Vin = 3.7 V Vo = 1.8 V, 20 mA to 1 A f = 1.4 MHz, L = 1 µH Co = 22 µF 100 µs/div G022 G023 Figure 29.
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TPS62090, TPS62091, TPS62092, TPS62093 www.ti.com SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 12 Layout 12.1 Layout Guideline • • • • • It is recommended to place the input capacitor as close as possible to the IC pins PVIN and PGND. The VOS connection is noise sensitive and needs to be routed as short and directly to the output pin of the inductor.
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TPS62090, TPS62091, TPS62092, TPS62093 SLVSAW2B – MARCH 2012 – REVISED APRIL 2014 www.ti.com 13 Device and Documentation Support 13.1 Device Support 13.1.1 Third-Party Products Disclaimer TI'S PUBLICATION OF INFORMATION REGARDING THIRD-PARTY PRODUCTS OR SERVICES DOES NOT CONSTITUTE AN ENDORSEMENT REGARDING THE SUITABILITY OF SUCH PRODUCTS OR SERVICES OR A WARRANTY, REPRESENTATION OR ENDORSEMENT OF SUCH PRODUCTS OR SERVICES, EITHER ALONE OR IN COMBINATION WITH ANY TI PRODUCT OR SERVICE. 13.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com (4) 23-Feb-2014 There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device.
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PACKAGE MATERIALS INFORMATION www.ti.com 28-Apr-2014 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPS62090RGTR QFN RGT 16 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 TPS62090RGTR QFN RGT 16 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 TPS62090RGTT QFN RGT 16 250 180.0 12.4 3.3 3.3 1.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 28-Apr-2014 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS62090RGTR QFN RGT 16 3000 338.0 355.0 50.0 TPS62090RGTR QFN RGT 16 3000 367.0 367.0 35.0 TPS62090RGTT QFN RGT 16 250 210.0 185.0 35.0 TPS62090RGTT QFN RGT 16 250 338.0 355.0 50.0 TPS62091RGTR QFN RGT 16 3000 367.0 367.0 35.0 TPS62091RGTR QFN RGT 16 3000 338.0 355.0 50.
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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.