Datasheet

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FEATURES

DESCRIPTION

APPLICATIONS

TPS62290DRV

V 2.7Vto6V

360k

V 1.8V,

1000mA

OUT

180k

GND

10 F

OUT

MODE

10 F

2.2 Hm

22pF

100

0.00001 0.0001 0.001 0.01 0.1 1

I -OutputCurrent- A

Efficiency-%

V =4.2V

V =3.8V

V =5V

V =4.5V

V =3.3V,

MODE=GND,

L =2.2 H

OUT

TPS62290 , TPS62291 , TPS62293

SLVS764C – JUNE 2007 – REVISED MARCH 2008

www.ti.com

1-A Step Down Converter in 2 x 2 SON Package

• High Efficiency Step Down Converter

• Output Current up to 1000 mA

The TPS6229x device is a highly efficient

synchronous step down dc-dc converter optimized for

• V

Range From 2.3 V to 6 V

battery powered portable applications. It provides up

• 2.25 MHz Fixed Frequency Operation

to 1000-mA output current from a single Li-Ion cell.

• Power Save Mode at Light Load Currents

With an input voltage range of 2.3 V to 6 V, the

• Output Voltage Accuracy in PWM mode ± 1.5%

device supports batteries with extended voltage

• Fixed Output Voltage Options

range and are ideal to power portable applications

like mobile phones and other portable equipment.

• Typ. 15- µ A Quiescent Current

The TPS6229x operates at 2.25-MHz fixed switching

• 100% Duty Cycle for Lowest Dropout

frequency and enters Power Save Mode operation at

• Voltage Positioning at Light Loads

light load currents to maintain high efficiency over the

• Available in a 2 × 2 × 0,8 mm SON Package

entire load current range.

The Power Save Mode is optimized for low output

voltage ripple. For low noise applications, the device

• Cell Phones, Smart-phones

can be forced into fixed frequency PWM mode by

• WLAN

pulling the MODE pin high. In the shutdown mode,

• PDAs, Pocket PCs

the current consumption is reduced to less than 1 µ A.

The TPS6229x allows the use of small inductors and

• Low Power DSP Supply

capacitors to achieve a small solution size.

• Portable Media Players

The TPS6229x is available in a 2-mm × 2-mm 6-pin

• POL

SON package.

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.

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 (25 pages)

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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 1-A Step Down Converter in 2 x 2 SON Package FEATURES 1 High Efficiency Step Down Converter Output Current up to 1000 mA VIN Range From 2.3 V to 6 V 2.25 MHz Fixed Frequency Operation Power Save Mode at Light Load Currents Output Voltage Accuracy in PWM mode ±1.5% Fixed Output Voltage Options Typ.
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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 ELECTRICAL CHARACTERISTICS Over full operating ambient temperature range, typical values are at TA = 25°C. Unless otherwise noted, specifications apply for condition VIN = EN = 3.6V. External components CIN = 4.7µF 0603, COUT = 10µF 0603, L = 2.2µH, refer to parameter measurement information. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VI Input voltage range 2.3 6 VIN 2.
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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 PIN ASSIGNMENTS DRV PACKAGE (TOP VIEW) SW MODE FB 1 2 3 we Po 6 AD P 5 r 4 GND VIN EN TERMINAL FUNCTIONS TERMINAL NAME I/O NO. DESCRIPTION VIN 5 PWR VIN power supply pin. GND 6 PWR GND supply pin EN 4 I This is the enable pin of the device. Pulling this pin to low forces the device into shutdown mode. Pulling this pin to high enables the device. This pin must be terminated.
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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 PARAMETER MEASUREMENT INFORMATION TPS62290DRV VIN C IN 10 mF SW R1 EN GND L1 2 .2 mH V OUT C1 22 pF C OUT 10 mF FB MODE R2 L: LPS3015 2.2 mH, 110 mW CIN: GRM188R60J106M 10 mF Murata 0603 size COUT: GRM188R60J106M 10 mF Murata 0603 size TYPICAL CHARACTERISTICS Table 1. Table Of Graphs FIGURE Efficiency vs VO 1.8 V Power Save Mode Figure 1 Efficiency vs VO 1.8 V Forced Save Mode Figure 2 Efficiency vs VO 3.
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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 EFFICIENCY (Power Save Mode) vs OUTPUT CURRENT EFFICIENCY (Forced PWM Mode) vs OUTPUT CURRENT 100 100 VIN = 2.7 V 90 80 VIN = 3.6 V 80 VIN = 3.3 V VIN = 4.5 V Efficiency - % Efficiency - % 90 L = 2.2 mH VIN = 3.3 V 70 VIN = 5 V 60 50 30 0.01 VIN = 2.7 V VIN = 5 V 60 VIN = 4.5 V 50 VIN = 3.6 V 30 20 0.1 100 10 1 IO - Output Current - mA 1000 100 10 IO - Output Current - mA 1 Figure 1. Figure 2.
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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 OUTPUT VOLTAGE ACCURACY (1.8V FORCED PWM MODE) vs OUTPUT CURRENT OUTPUT VOLTAGE ACCURACY (1.8V POWER SAVE MODE) vs OUTPUT CURRENT 1.854 1.90 MODE = VIN, MODE = GND, L = 2.2 mH L = 2.2 mH 1.836 1.88 VIN = 3.6 V, TA = -40°C 1.818 DC Output Voltage - V DC Output Voltage - V VIN = 2.7 V, TA = -40°C VIN = 4.5 V, TA = -40°C 1.8 VIN = 2.7 V, TA = 25°C 1.782 VIN = 4.5 V, TA = 85°C VIN = 3.6 V, TA = 25°C VIN = 3.
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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 PFM LOAD TRANSIENT SW 2V/Div PFM LINE TRANSIENT VIN 3.6 V, VOUT 1.8 V, IOUT 300 mA to 800 mA, MODE = GND VOUT 100 mV/Div VOUT 50 mV/Div VIN 3.6 V, VOUT 1.8 V, IOUT 50 mA to 250 mA, 250 mA MODE = GND IOUT 500 mA/Div 800 mA 300 mA IOUT 200 mA/Div 50 mA Icoil 500 mA/Div Icoil 500 mA/Div Time Base - 20 ms/Div Time Base - 20 ms/Div Figure 9. Figure 10. PWM LOAD TRANSIENT VIN 3.6 V to 4.
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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 TYPICAL OPERATION vs PFM MODE TYPICAL OPERATION vs PWM MODE VIN 3.6 V, VOUT 1.8 V, IOUT 150 mA, VOUT 20 mV/Div VOUT 10 mV/Div L 2.2 mH, COUT 10 mF 0603 VIN 3.6 V, VOUT 1.8 V, IOUT 10 mA, SW 2 V/Div L 2.2 mH, COUT 10 mF 0603 SW 2 V/Div Icoil 200 mA/Div Icoil 200 mA/Div Time Base - 10 ms/Div Time Base - 10 ms/Div Figure 13. Figure 14.
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TPS62290, TPS62291, TPS62293 www.ti.com STATIC DRAIN-SOURCE ON-STATE RESISTANCE vs INPUT VOLTAGE 0.8 High Side Switching 0.7 0.6 o TA = 85 C 0.5 o TA = 25 C 0.4 0.3 0.2 TA = -40oC 0.1 0 2 2.5 3 3.5 4 VIN − Input Voltage − V 4.5 5 RDS(on) - Static Drain-Source On-State Resistance − W RDS(on) - Static Drain-Source On-State Resistance − W SLVS764C – JUNE 2007 – REVISED MARCH 2008 STATIC DRAIN-SOURCE ON-STATE RESISTANCE vs INPUT VOLTAGE 0.4 Low Side Switching 0.35 0.3 o TA = 85 C 0.
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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 DETAILED DESCRIPTION OPERATION The TPS6229x step down converter operates with typically 2.25-MHz fixed frequency pulse width modulation (PWM) at moderate to heavy load currents. At light load currents, the converter can automatically enter Power Save Mode and operates then in PFM mode.
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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 Output voltage Voltage Positioning Vout +1% PFM Comparator threshold Light load PFM Mode Vout (PWM) moderate to heavy load PWM Mode Figure 19. Power Save Mode Operation 100% Duty Cycle Low Dropout Operation The device starts to enter 100% duty cycle Mode once the input voltage comes close the nominal output voltage. To maintain the output voltage, the High Side MOSFET switch is turned on 100% for one or more cycles.
PAGE 13
TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 ENABLE The device is enabled setting EN pin to high. During the start up time tStart Up the internal circuits are settled. Afterwards, the device activates the soft start circuit. The EN input can be used to control power sequencing in a system with various dc/dc converters. The EN pin can be connected to the output of another converter, to drive the EN pin high and getting a sequencing of supply rails.
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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 APPLICATION INFORMATION TPS62290DRV VIN 2.3 V to 6 V 2.2 mH VIN CIN L1 SW 10 mF C1 22 pF R1 EN 360 kW COUT FB GND 10 mF R2 MODE VOUT 1.8 V, Up to 1A 180 kW Figure 20. TPS62290DRV Adjustable 1.8 V L1 TPS62290DRV VIN 3.3 V to 6 V VIN CIN 2.2 mH SW R1 EN 10 mF 820 kW COUT FB GND VOUT 3.3 V, Up to 1A C1 22 pF R2 MODE 10 mF 182 kW Figure 21. TPS62290DRV Adjustable 3.3 V VIN = 3.
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TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 OUTPUT VOLTAGE SETTING The output voltage can be calculated to: V OUT + VREF ǒ R 1) 1 R2 Ǔ with an internal reference voltage VREF typical 0.6V. To minimize the current through the feedback divider network, R2 should be 180 kΩ or 360 kΩ. The sum of R1 and R2 should not exceed ~1MΩ, to keep the network robust against noise. An external feed forward capacitor C1 is required for optimum load transient response.
PAGE 16
TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 Table 2. List of Inductors 3 DIMENSIONS [mm ] INDUCTOR TYPE 3 × 3 × 1.5 LPS3015 SUPPLIER Coilcraft 3 x 3 x 1.5 LQH3NPN2R2NM0 MURATA 3.2 x 2.6 x 1.2 MIPSA3226D2R2 FDK Output Capacitor Selection The advanced fast-response voltage mode control scheme of the TPS6229x allows the use of tiny ceramic capacitors. Ceramic capacitors with low ESR values have the lowest output voltage ripple and are recommended.
PAGE 17
TPS62290, TPS62291, TPS62293 www.ti.com SLVS764C – JUNE 2007 – REVISED MARCH 2008 common Power GND node and a different node for the Signal GND to minimize the effects of ground noise. Connect these ground nodes together to the Power Pad (star point) underneath the IC. Keep the common path to the GND PIN, which returns the small signal components and the high current of the output capacitors as short as possible to avoid ground noise.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 10-Jun-2014 Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.
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PACKAGE MATERIALS INFORMATION www.ti.com 16-Sep-2010 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing TPS62290DRVR SON DRV 6 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3000 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2 TPS62290DRVT SON DRV 6 250 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2 TPS62291DRVR SON DRV 6 3000 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2 TPS62291DRVT SON DRV 6 250 179.
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PACKAGE MATERIALS INFORMATION www.ti.com 16-Sep-2010 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS62290DRVR SON DRV 6 3000 203.0 203.0 35.0 TPS62290DRVT SON DRV 6 250 203.0 203.0 35.0 TPS62291DRVR SON DRV 6 3000 203.0 203.0 35.0 TPS62291DRVT SON DRV 6 250 203.0 203.0 35.0 TPS62293DRVR SON DRV 6 3000 203.0 203.0 35.0 TPS62293DRVT SON DRV 6 250 203.0 203.0 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.