Datasheet

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QFN-10

CSP-12

FEATURES

DESCRIPTION

APPLICATIONS

10 Fm

1 Hm

PVIN

TPS62350YZG

2.7V..5.5V

AVIN

PGND

VSEL

SDA

SCL

SYNC

upto3.4Mbips

100

0.1 1 10 100 1000

Efficiency − %

− OutputCurrent − mA

=Roof

=Floor

TYPICAL APPLICATION

EFFICIENCY vsLOADCURRENT

C Bus

AGND

V =3.6V

V =1.35V

LPFM/PWMMode

TPS62350, TPS62351

TPS62352, TPS62353

TPS62354, TPS62355, TPS62356

www.ti.com

.............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008

800-mA / 1000-mA, 3-MHz SYNCHRONOUS STEP-DOWN CONVERTER

WITH I

C™ COMPATIBLE INTERFACE IN CHIP SCALE PACKAGING

234

• 88% Efficiency at 3-MHz Operation

• 800-mA Output Current at V

= 2.7 V

The TPS6235x device is a high-frequency

synchronous step-down dc-dc converter optimized for

• 3-MHz Fixed Frequency Operation

battery-powered portable applications. Intended for

• Best in Class Load and Line Transient

low-power applications, the TPS6235x supports up to

• Complete 1-mm Component Profile Solution

800-mA load current and allows the use of small, low

cost inductors and capacitors.

• ± 2% PWM DC Voltage Accuracy

• 35-ns Minimum On-Time

The device is ideal for mobile phones and similar

portable applications powered by a single-cell Li-Ion

• Efficiency Optimized Power-Save Mode

battery. With an output voltage range adjustable via

(Light PFM)

C interface down to 0.6 V, the device supports

• Transient Optimized Power-Save Mode

low-voltage DSPs and processors core power

(Fast PFM) supplies in smart-phones, PDAs, and handheld

computers.

• 28- µ A Typical Quiescent Current

The TPS6235x operates at 3-MHz fixed switching

• I

C Compatible Interface up to 3.4 Mbps

frequency and enters the efficiency optimized

• Pin-Selectable Output Voltage

power-save mode operation at light load currents to

• Synchronizable On the Fly to External

maintain high efficiency over the entire load current

Clock Signal

range. In the shutdown mode, the current

consumption is reduced to less than 2 µ A.

• Available in a 10-Pin QFN (3 x 3 mm) and

12-Pin NanoFree™ (CSP) Packaging

The serial interface is compatible with Fast/Standard

and High-Speed mode I

C specification allowing

transfers at up to 3.4 Mbps. This communication

interface is used for dynamic voltage scaling with

• SmartReflex™ Compliant Power Supply

voltage steps down to 12.5 mV, for reprogramming

• Split Supply DSPs and µ P Solutions

the mode of operation (Light PFM, Fast PFM or

OMAP™, XSCALE™

Forced PWM) or disable/enabling the output voltage.

• Cell Phones, Smart-Phones

• PDAs, Pocket PCs

• Digital Cameras

• Micro DC-DC Converter Modules

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.

2 NanoFree, SmartReflex, OMAP, PowerPAD are trademarks of Texas Instruments.

3 XSCALE is a trademark of Intel Corporation.

4 I2C is a trademark of Philips Corporation.

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 (46 pages)

PAGE 1
QFN-10 TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 CSP-12 www.ti.com ..............................................................................................................................................................
PAGE 2
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. 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.
PAGE 3
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) MIN NOM MAX UNIT VI Input voltage range 2.7 5.
PAGE 4
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range, typical values are at TA = 25°C. Unless otherwise noted, specifications apply with VI = 3.6 V, EN = VI, VSEL = VI, SYNC = GND, VSEL0[6] bit = 1.
PAGE 5
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range, typical values are at TA = 25°C. Unless otherwise noted, specifications apply with VI = 3.6 V, EN = VI, VSEL = VI, SYNC = GND, VSEL0[6] bit = 1.
PAGE 6
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range, typical values are at TA = 25°C. Unless otherwise noted, specifications apply with VI = 3.6 V, EN = VI, VSEL = VI, SYNC = GND, VSEL0[6] bit = 1.
PAGE 7
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 I2C INTERFACE TIMING CHARACTERISTICS (continued) PARAMETER tSU, tSTA Setup Time for a Repeated START Condition tSU, tDAT Data Setup Time tHD, tDAT Data Hold Time TEST CONDITIONS MIN Standard mode 4.
PAGE 8
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com I2C TIMING DIAGRAMS SDA tf tLOW tsu;DAT tr tf tBUF tr thd;STA SCL S thd;STA thd;DAT tsu;STA tsu;STO HIGH Sr P S Figure 1.
PAGE 9
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com ..............................................................................................................................................................
PAGE 10
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.
PAGE 11
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com ..............................................................................................................................................................
PAGE 12
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com EFFICIENCY vs OUTPUT CURRENT EFFICIENCY vs OUTPUT CURRENT 100 100 90 90 VI = 3.6 V VO = 1.
PAGE 13
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 DC OUTPUT VOLTAGE vs OUTPUT CURRENT DC OUTPUT VOLTAGE vs INPUT VOLTAGE 1.070 0.790 0.785 1.065 0.780 1.060 VO − DC Output Voltage − V VO − DC Output Voltage − V LPFM/PWM Mode 1.055 PWM Mode 1.050 1.045 1.040 VO = 0.
PAGE 14
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com DC OUTPUT VOLTAGE vs AMBIENT TEMPERATURE MEASURED OUTPUT VOLTAGE vs DAC TARGET OUTPUT VOLTAGE 5 1.360 IO = 100 mA 4 L = 1 mH CO = 10 mF 3-MHz PWM Mode VO − Measured Output Voltage − mV VO − DC Output Voltage − V 1.
PAGE 15
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 OSCILLATOR FREQUENCY vs INPUT VOLTAGE rDS(on) P-MOSFET vs INPUT VOLTAGE 3.15 450 o 400 3.1 TA = 25 C 3.05 3 o TA = 85 C o TA = 85oC 2.95 rDS(on) − P-MOSFET − mW f(OSC) − Oscillator Frequency − MHz TA = -40 C 2.
PAGE 16
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com LOAD TRANSIENT: 50 mA / 400 mA PWM OPERATION IO 200 mA/div IO 200 mA/div LOAD TRANSIENT: 50 mA / 400 mA / 50 mA PWM OPERATION VI = 3.6 V VO = 1.35 V VO 10 mV/div - 1.35-V Offset VI = 3.6 V VO = 1.
PAGE 17
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 VO 20 mV/div - 1.35-V Offset IO 200 mA/div VI = 3.6 V VO = 1.35 V FPFM/PWM Mode L = 1 mH CO = 10 mF t − Time = 10 ms/div Figure 25. Figure 26.
PAGE 18
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com LOAD TRANSIENT: 1 mA / 100 mA / 1 mA LFPM/PWM OPERATION VI = 3.6 V VO = 1.05 V IO 50 mA/div VO 10 mV/div - 1.05-V Offset VI = 3.6 V VO = 1.
PAGE 19
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 COMBINED LINE/LOAD TRANSIENT (3.6 V TO 4.2 V, 400 mA TO 800 mA) PWM OPERATION L = 1 mH CO = 10 mF 3-MHz PWM Mode t − Time = 100 ms/div VI 500 mV/div - 3-V Offset IO = 50 mA VO = 1.35 V VO 50 mV/div - 1.
PAGE 20
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com VI = 3.6 V VO = 1.05 V L = 1 mH CO = 10 mF IO = 1 mA LPFM Mode t − Time = 40 ms/div Figure 38. DYNAMIC VOLTAGE MANAGEMENT DYNAMIC VOLTAGE MANAGEMENT PWM VO = 1.05 V VO VO = 1.35 V IL FPFM VI = 3.6 V VO = 1.
PAGE 21
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 VO VO 200 mV/div - 0.75-V Offset VO = 1.5 V 500 mV/div VI = 3.6 V VO = 0.75 V / 1.5 V (PWM) IO = 0 mA IL EN 2 V/div START UP 200 mA/div VSEL 2 V/div OUTPUT VOLTAGE RAMP CONTROL VI = 3.6 V VO = 1.
PAGE 22
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com DETAILED DESCRIPTION Operation The TPS6235x is a synchronous step-down converter typically operating with a 3-MHz fixed frequency pulse width modulation (PWM) at moderate to heavy load currents.
PAGE 23
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 Power-Save Mode : Light PFM With decreasing load current, the device can also automatically switch into light PFM pulse skipping operation in which the power stage operates intermittently based on load demand.
PAGE 24
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com This mechanism is used to limit the output current under short-circuit conditions. Therefore, the start-up time depends on the output capacitor and load current.
PAGE 25
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 THEORY OF OPERATION Serial Interface Description I2C is a 2-wire serial interface developed by Philips Semiconductor (see I2C-Bus Specification, Version 2.1, January 2000).
PAGE 26
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com The master then generates a repeated start condition (a repeated start condition has the same timing as the start condition).
PAGE 27
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com ..............................................................................................................................................................
PAGE 28
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.
PAGE 29
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 Voltage Scaling Management In order to reduce the power consumption of the processor core, the TPS6235x can scale its output voltage. There are two different strategies: 1) by software or 2) by hardware.
PAGE 30
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com In multiple-step mode, PWROK is defined as low while the output voltage is ramping up or down. Under all other operating conditions, PWROK is defined to be low when the output voltage is below -1.5% of the target value.
PAGE 31
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 REGISTER DESCRIPTION VSEL0 REGISTER (READ/WRITE) MSB 7 LSB 6 5 4 3 2 1 0 Memory location: 00 Reset state: X1XX XXXX – See the Ordering Information Table VOLTAGE STEP MULTIPLIER, VSM0 6-bit unsigned binary linear coding.
PAGE 32
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com CONTROL1 REGISTER (READ/WRITE) MSB 7 LSB 6 5 4 3 2 1 0 Memory location: 02 Reset state: 0001 0000 MODE0 This bit defines the mode of operation for VSEL low 0 : Light PFM with auto.
PAGE 33
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 CONTROL2 REGISTER (READ/WRITE) MSB 7 LSB 6 5 4 3 2 1 0 Memory location: 03 Reset state: 0000 0111 DEFSLEW DEFSLEW defines the output voltage ramp rate 000 : 0.15 mV/ms 001 : 0.3 mV/ms 010 : 0.6 mV/ms 011 : 1.
PAGE 34
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com APPLICATION INFORMATION Output Filter Design (Inductor and Output Capacitor) The TPS6235x step-down converter has an internal loop compensation.
PAGE 35
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com .............................................................................................................................................................. SLVS540E – MAY 2006 – REVISED APRIL 2008 Table 5. List of Inductors MANUFACTURER SERIES DIMENSIONS FDK MIPSA2520 2.5 × 2.0 × 1.2 = 6 mm3 TDK VLF3010AT 2.8 × 2.6 × 1 = 7.28 mm3 LPS3010 3 × 3 × 1 = 9 mm3 LPS3015 3 × 3 × 1.5 = 13.
PAGE 36
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 SLVS540E – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com Layout Considerations As for all switching power supplies, the layout is an important step in the design. High-speed operation of the TPS6235x device demands careful attention to PCB layout.
PAGE 37
TPS62350, TPS62351 TPS62352, TPS62353 TPS62354, TPS62355, TPS62356 www.ti.com ..............................................................................................................................................................
PAGE 38
PACKAGE OPTION ADDENDUM www.ti.
PAGE 39
PACKAGE OPTION ADDENDUM www.ti.com 15-Apr-2008 (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. 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.
PAGE 40
PACKAGE MATERIALS INFORMATION www.ti.com 15-Apr-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel Diameter Width (mm) W1 (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPS62351DRCR SON DRC 10 3000 330.0 12.4 3.3 3.3 1.6 8.0 12.0 Q2 TPS62351YZGR DSBGA YZG 12 3000 178.0 8.4 1.68 2.46 0.84 4.0 8.0 Q1 TPS62351YZGT DSBGA YZG 12 250 178.0 8.4 1.68 2.46 0.84 4.0 8.
PAGE 41
PACKAGE MATERIALS INFORMATION www.ti.com 15-Apr-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS62351DRCR SON DRC 10 3000 340.5 338.1 20.6 TPS62351YZGR DSBGA YZG 12 3000 195.2 193.7 34.9 TPS62351YZGT DSBGA YZG 12 250 195.2 193.7 34.9 TPS62353YZGR DSBGA YZG 12 3000 195.2 193.7 34.9 TPS62353YZGT DSBGA YZG 12 250 195.2 193.7 34.9 TPS62354YZGR DSBGA YZG 12 3000 195.2 193.7 34.
PAGE 42
PAGE 43
X: Max = 2292 µm, Min = 2192 µm Y: Max = 1524 µm, Min = 1424 µm
PAGE 44
PACKAGE MATERIALS INFORMATION www.ti.com 24-Jan-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) TPS62350YZGR DSBGA YZG 12 3000 180.0 8.4 TPS62350YZGR DSBGA YZG 12 3000 180.0 TPS62350YZGT DSBGA YZG 12 250 180.
PAGE 45
PACKAGE MATERIALS INFORMATION www.ti.com 24-Jan-2014 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS62350YZGR DSBGA YZG 12 3000 182.0 182.0 17.0 TPS62350YZGR DSBGA YZG 12 3000 220.0 220.0 34.0 TPS62350YZGT DSBGA YZG 12 250 220.0 220.0 34.0 TPS62350YZGT DSBGA YZG 12 250 182.0 182.0 17.0 TPS62351DRCR SON DRC 10 3000 340.5 338.1 20.6 TPS62351YZGR DSBGA YZG 12 3000 220.0 220.0 34.
PAGE 46
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.