Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - DC/DC voltage regulator Holder WSON 8

100

Efficiency - %

0 0.25 0.5 0.75 1 1.25 1.5 1.75 2

I - Load Current - A

V = 4.2 V

V = 5 V

V = 3.7 V

L = 1.2 H (NRG4026T 1R2),

C = 22 F (0603 size),

V = 3.3 V,

Mode: Auto PFM/PWM

OUT

1.0 H

10 F

OUT

V = 2.9 V to 6 V

22 pF

100 k

180 k

360 k

PVIN

PGND

AVIN

AGND

1.8 V 2 A

OUT

TYPICAL APPLICATION CIRCUIT

TPS62065, TPS62067

www.ti.com

SLVS833B –MARCH 2010–REVISED NOVEMBER 2013

3-MHz 2A Step Down Converter in 2x2 SON Package

Check for Samples: TPS62065, TPS62067

FEATURES

DESCRIPTION

The TPS6206x is a family of highly efficient

• 3 MHz Switching Frequency

synchronous step down DC-DC converters. They

• V

Range from 2.9V to 6V

provide up to 2.0A output current.

• Up to 97% Efficiency

With an input voltage range of 2.9V to 6V the device

• Power Save Mode / 3MHz Fixed PWM Mode

is a perfect fit for power conversion from a 5V or 3.3V

• Power Good Output

system supply rail. The TPS6206x operates at 3MHz

fixed frequency and enters Power Save Mode

• Output Voltage Accuracy in PWM Mode ±1.5%

operation at light load currents to maintain high

• Output Capacitor Discharge Function

efficiency over the entire load current range. The

• Typical 18 µA Quiescent Current

Power Save Mode is optimized for low output voltage

ripple. For low noise applications, TPS62065 can be

• 100% Duty Cycle for Lowest Dropout

forced into fixed frequency PWM mode by pulling the

• Voltage Positioning

MODE pin high. TPS62067 provides an open drain

• Clock Dithering

power good output.

• Supports Maximum 1mm Height Solutions

In the shutdown mode, the current consumption is

• Available in a 2x2x0.75mm SON

reduced to less than 1µA and an internal circuit

discharges the output capacitor.

APPLICATIONS

TPS6206x family is optimized for operation with a tiny

• POL

1.0µH inductor and a small 10µF output capacitor to

achieve smallest solution size and high regulation

• Notebooks, Pocket PCs

performance.

• Portable Media Players

The TPS6206X is available in a small 2x2x0.75mm 8-

• DSP Supply

pin 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.

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
TPS62065, TPS62067 www.ti.com SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 3-MHz 2A Step Down Converter in 2x2 SON Package Check for Samples: TPS62065, TPS62067 FEATURES DESCRIPTION • • • • • • • • • • • • • The TPS6206x is a family of highly efficient synchronous step down DC-DC converters. They provide up to 2.0A output current. 1 2 3 MHz Switching Frequency VIN Range from 2.
PAGE 2
TPS62065, TPS62067 SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 www.ti.com 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.
PAGE 3
TPS62065, TPS62067 www.ti.com SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 THERMAL INFORMATION THERMAL METRIC TPS62065 TPS62067 (1) UNITS DSG 8 PINS θJA Junction-to-ambient thermal resistance 65.3 θJC(top) Junction-to-case(top) thermal resistance 74.2 θJB Junction-to-board thermal resistance 35.4 ψJT Junction-to-top characterization parameter 2.2 ψJB Junction-to-board characterization parameter 36.0 θJC(bottom) Junction-to-case(bottom) thermal resistance 12.
PAGE 4
TPS62065, TPS62067 SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) 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 = 10μF 0603, COUT = 10μF 0603, L = 1.0μH, see the parameter measurement information.
PAGE 5
TPS62065, TPS62067 www.ti.com SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 FUNCTIONAL BLOCK DIAGRAM AVIN PVIN Current Limit Comparator Undervoltage Lockout 1.8V Thermal Shutdown Limit High Side PFM Comparator Reference 0.6V VREF FB VREF Softstart VOUT RAMP CONTROL Gate Driver Anti Shoot-Through Control Stage Error Amp. VREF SW Integrator FB Zero-Pole AMP. Internal FB Network* MODE * MODE/ PG PWM Comp.
PAGE 6
TPS62065, TPS62067 SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 www.ti.com TYPICAL CHARACTERISTICS TABLE OF GRAPHS η FIGURE Load Current, VOUT = 1.2 V, Auto PF//PWM Mode, Linear Scale Figure 1 Load Current, VOUT = 1.8 V, Auto PFM/PWM Mode, Linear Scale Figure 2 Load Current, VOUT = 3.3 V, PFM/PWM Mode, Linear Scale Figure 3 Load Current, VOUT = 1.8 V, Auto PFM/PWM Mode vs. Forced PWM Mode, Logarithmic Scale Figure 4 Load Current, VOUT = 1.
PAGE 7
TPS62065, TPS62067 www.ti.com SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 EFFICIENCY vs LOAD CURRENT 100 EFFICIENCY vs LOAD CURRENT 100 VIN = 3.7 V Auto PFM/PWM Mode 95 90 90 VIN = 4.2 V 80 VIN = 5 V 70 Efficiency - % Efficiency - % 85 80 75 70 L = 1.2 mH (NRG4026T 1R2), COUT = 22 mF (0603 size), VOUT = 3.3 V, Mode: Auto PFM/PWM 60 55 VIN = 3.3 V VIN = 3.6 V VIN = 4.2 V VIN = 5 V 50 40 0 0.25 0.5 0.75 1 1.25 1.5 IL - Load Current - A 1.75 20 0 0.001 2 Figure 3. VOUT = 3.
PAGE 8
TPS62065, TPS62067 SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 www.ti.com SHUTDOWN CURRENT vs INPUT VOLTAGE AND AMBIENT TEMPERATURE QUIESCENT CURRENT vs INPUT VOLTAGE 25 TA = 85°C TA = 85°C 20 0.75 Iq - Quiesent Current - mA ISHDN - Shutdown Current - mA 1 0.50 TA = 25°C 0.25 3 3.5 4 4.5 5 VI - Input Voltage - V 5.5 TA = -40°C 10 0 2.5 6 Figure 7. 3.5 4 4.5 5 VI - Input Voltage - V Figure 8.
PAGE 9
TPS62065, TPS62067 www.ti.com SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 STATIC DRAIN-SOURCE ON-STATE RESISTANCE vs INPUT VOLTAGE 0.2 RDISCHARGE vs INPUT VOLTAGE 600 0.18 500 0.16 400 TJ = 25°C 0.12 RDischarge - W RDSON - W VO = 3.3 V TJ = 85°C 0.14 TJ = -40°C 0.1 0.08 VO = 1.8 V 300 200 0.06 VO = 1.2 V 0.04 100 0.02 0 2.5 3 3.5 4 4.5 5 VI - Input Voltage - V 5.5 6 0 2.5 3 Figure 11. High-Side Switch VOUT 50mV/Div VOUT 50mV/Div 3.5 4 4.5 5 VI - Input Voltage - V Figure 12.
PAGE 10
TPS62065, TPS62067 SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 www.ti.com VOUT100 mV/Div VOUT100 mV/Div SW 2V/Div SW 2V/Div ICOIL1A/Div ICOIL1A/Div VIN = 3.6 V, VOUT = 1.2 V, IOUT = 0.2 A to 1 A MODE = VIN ILOAD500 mA/Div VIN = 3.6 V, VOUT = 1.2 V, IOUT = 20 mA to 250 mA ILOAD500 mA/Div Time Base - 10 µs/Div Figure 15. Load Transient Response PWM Mode 0.2A To 1A Time Base - 10 µs/Div Figure 16. Load Transient PFM Mode 20 mA to 250mA VIN = 3.6 V to 4.2 V, VOUT = 1.8 V, IOUT = 500 mA L = 1.
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TPS62065, TPS62067 www.ti.com SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 2 V/Div 500 mV/Div 1 V/Div 2 A/Div 500 mA/Div 50 mV/Div VIN = 3.6 V to 4.2 V, VOUT = 1.8 V, IOUT = 50 mA, L = 1.2 mH, COUT = 10 mF 500 mA/Div Time Base - 100 ms/Div VIN = 3.6 V, L = 1.2 mH, VOUT = 1.8 V, COUT = 10 mF Load = 2R2 Time Base - 100 ms/Div Figure 20. Startup Into Load – VOUT 1.8V Figure 19. Line Transient PFM Mode EN 1 V/Div VIN = 3.6 V, VOUT = 1.
PAGE 12
TPS62065, TPS62067 SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 www.ti.com VIN = 4.2 V, VOUT = 3.3 V, Load = no load PG Pullup resistor 10 kW 2 V/Div 2 V/Div 5 V/Div Time Base - 1 ms/Div Figure 23.
PAGE 13
TPS62065, TPS62067 www.ti.com SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 DETAILED DESCRIPTION OPERATION The TPS6206x step down converter operates with typically 3MHz 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 (Pulse Frequency Mode) mode.
PAGE 14
TPS62065, TPS62067 SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 www.ti.com Output voltage Voltage Positioning Vout +1% PFM Comparator threshold Light load PFM Mode Vout (PWM) moderate to heavy load PWM Mode Figure 24. Power Save Mode Operation with automatic Mode transition 100% Duty Cycle Low Dropout Operation The device starts to enter 100% duty cycle mode as the input voltage comes close to the nominal output voltage.
PAGE 15
TPS62065, TPS62067 www.ti.com SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 Connecting this pin to GND enables the Power Save Mode with automatic transition between PWM and PFM mode. Pulling the MODE pin high forces the converter to operate in fixed frequency PWM mode even at light load currents. This allows simple filtering of the switching frequency for noise sensitive applications. In this mode, the efficiency is lower compared to the power save mode during light loads.
PAGE 16
TPS62065, TPS62067 SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 www.ti.com This limits the inrush current in the converter during start up and prevents possible input voltage drops when a battery or high impedance power source is used. During soft start, the switch current limit is reduced to 1/3 of its nominal value ILIMF until the output voltage reaches 1/3 of its nominal value. Once the output voltage trips this threshold, the device operates with its nominal current limit ILIMF.
PAGE 17
TPS62065, TPS62067 www.ti.com SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 APPLICATION INFORMATION L 1.0 mH VIN = 2.9 V to 6 V PVIN SW R1 360 kΩ AVIN EN MODE AGND PGND CIN 10 µF VOUT = 1.8 V up to 2 A FB COUT Cff 22 pF 10 µF R2 180 kΩ Figure 26. TPS62065 1.8V Adjustable Output Voltage Configuration L 1.0 mH VIN = 2.9 V to 6 V PVIN SW R1 360 kW AVIN EN CIN 10 mF FB AGND PGND VOUT 1.8 V 2 A PG R2 180 kW Cff COUT 22 pF 10 mF RPG 100 kW Figure 27. TPS62067 Adjustable 1.
PAGE 18
TPS62065, TPS62067 SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 www.ti.com OUTPUT FILTER DESIGN (INDUCTOR AND OUTPUT CAPACITOR) The internal compensation network of TPS6206x is optimized for a LC output filter with a corner frequency of: fc = 1 2 ´ p ´ (1μH ´ 10μF) = 50kHz The part operates with nominal inductors of 1.0µH to 1.2 µH and with 10µF to 22µF small X5R and X7R ceramic capacitors. Please refer to the lists of inductors and capacitors. The part is optimized for a 1.
PAGE 19
TPS62065, TPS62067 www.ti.com SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 In case additional ceramic capacitors in the supplied system are connected to the output of the DC/DC converter, the output capacitor COUT need to be decreased in order not to exceed the recommended effective capacitance range. In this case a loop stability analysis must be performed as described later.
PAGE 20
TPS62065, TPS62067 SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 www.ti.com Mode/PG Enable LAYOUT CONSIDERATIONS VIN GND CIN COUT R2 R1 CFF GND L VOUT Figure 28. PCB Layout As for all switching power supplies, the layout is an important step in the design. Proper function of the device demands careful attention to PCB layout. Care must be taken in board layout to get the specified performance.
PAGE 21
TPS62065, TPS62067 www.ti.com SLVS833B – MARCH 2010 – REVISED NOVEMBER 2013 REVISION HISTORY NOTE: Page numbers of previous versions may differ from current version. Changes from Revision A (May 2010) to Revision B • Page Added Thermal Information table and deleted Dissipation Ratings table ............................................................................. 3 Changes from Original (March 2010) to Revision A Page • Changed VIN Range from "3V to 6V" to "2.9V to 6V", throughout ..............
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 7-Nov-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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PACKAGE MATERIALS INFORMATION www.ti.com 7-Nov-2013 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 TPS62065DSGR WSON DSG 8 3000 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2 TPS62065DSGR WSON DSG 8 3000 180.0 8.4 2.3 2.3 1.15 4.0 8.0 Q2 TPS62065DSGT WSON DSG 8 250 180.0 8.4 2.3 2.3 1.15 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 7-Nov-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS62065DSGR WSON DSG 8 3000 195.0 200.0 45.0 TPS62065DSGR WSON DSG 8 3000 210.0 185.0 35.0 TPS62065DSGT WSON DSG 8 250 210.0 185.0 35.0 TPS62067DSGR WSON DSG 8 3000 195.0 200.0 45.0 TPS62067DSGR WSON DSG 8 3000 210.0 185.0 35.0 TPS62067DSGT WSON DSG 8 250 195.0 200.0 45.
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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.