Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - DC/DC voltage regulator Holder VQFN 34

3,5mmx7mm

TypicalSize

FEATURES

DESCRIPTION

APPLICATIONS

VIN PH

BOOT

PGND

VSENSE

Output

AGND

Input

TPS54617

COMP

Compensation

Network

VBIAS

SS/ENA

SYNC

PWRGD

Efficiency − %

EFFICIENCY vsOUTPUTCURRENT

− OutputCurrent − A

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5

V =6V

V =5V

V =3V

V =3.3V

f =1600kHz

V =1.8V

TPS54617

www.ti.com

........................................................................................................................................... SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009

3-V TO 6-V INPUT, 6-A, SMALL SYNCHRONOUS-BUCK

SWITCHER WITH INTEGRATED FETs (SWIFT™)

• 30-m Ω MOSFET Switches for High Efficiency

at 6-A Continuous Output

As a member of the SWIFT™ family of dc/dc

regulators, the TPS54617 low-input voltage

• Adjustable Output Voltage Down to 0.9 V With

high-output current synchronous buck PWM

1% Accuracy

converter offers the same features as the TPS54610

• Externally Compensated for Design Flexibility

in a small package and higher switching frequency.

• Wide PWM Frequency: Fixed 350 kHz, 550 kHz,

Included on the substrate with the listed features are

or Adjustable 280 kHz to 1.6 MHz

a true, high performance, voltage error amplifier that

enables maximum performance under transient

• Synchronizable to 1.6MHz

conditions and flexibility in choosing the output filter L

• Load Protected by Peak Current Limit and

and C components; an undervoltage-lockout circuit to

Thermal Shutdown

prevent start-up until the input voltage reaches 3 V;

• Small 3.5mm x 7mm Package and Similar

an internally and externally set slow-start circuit to

Layout to TPS54610 Reduces Board Area and

limit in-rush currents; and a power good output useful

for processor/logic reset, fault signaling, and supply

Total Cost

sequencing.

• SWIFT Documentation Application Notes, and

SwitcherPro™ Software: www.ti.com/swift

The TPS54617 is available in a thermally enhanced

34 pin QFN (RUV) PowerPAD™ package, which

eliminates bulky heatsinks. TI provides evaluation

modules and the SwitcherPro™ design software tool

• Low-Voltage, High-Density Systems With

to aid in achieving high-performance power supply

Power Distributed at 3.3 V or 5 V

designs to meet aggressive equipment development

• Point of Load Regulation for High Performance

cycles.

DSPs, FPGAs, ASICs, and Microprocessors

• Broadband, Networking and Optical

Communications Infrastructure

SIMPLIFIED SCHEMATIC

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 SwitcherPro, SWIFT, PowerPAD are trademarks of Texas Instruments.

3 All other trademarks are the property of their respective owners.

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 (21 pages)

PAGE 1
Typical Size 3,5 mm x 7 mm TPS54617 www.ti.com ........................................................................................................................................... SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 3-V TO 6-V INPUT, 6-A, SMALL SYNCHRONOUS-BUCK SWITCHER WITH INTEGRATED FETs (SWIFT™) FEATURES 1 DESCRIPTION • 30-mΩ MOSFET Switches for High Efficiency at 6-A Continuous Output • Adjustable Output Voltage Down to 0.
PAGE 2
TPS54617 SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 ........................................................................................................................................... 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
TPS54617 www.ti.com ........................................................................................................................................... SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 PACKAGE DISSIPATION RATINGS (1) (2) (1) PACKAGE THERMAL IMPEDANCE JUNCTION-TO-AMBIENT THERMAL IMPEDANCE JUNCTION-TO-CASE 34-Pin RUV with solder 14.5°C/W 0.5 °C/W (2) Test board conditions: a. 3 inch × 3 inch, 4 layers, Thickness: 0.062 inch b. 2.
PAGE 4
TPS54617 SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 ........................................................................................................................................... www.ti.
PAGE 5
TPS54617 www.ti.com ...........................................................................................................................................
PAGE 6
TPS54617 SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 ........................................................................................................................................... www.ti.com INTERNAL BLOCK DIAGRAM VBIAS AGND VIN Enable Comparator SS/ENA Falling Edge Deglitch 1.2 V Hysteresis: 0.03 V 2.5 ms VIN UVLO Comparator VIN 2.95 V Hysteresis: 0.
PAGE 7
TPS54617 www.ti.com ........................................................................................................................................... SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 TYPICAL CHARACTERISTICS DRAIN-SOURCE ON-STATE RESISTANCE vs JUNCTION TEMPERATURE DRAIN-SOURCE ON-STATE RESISTANCE vs JUNCTION TEMPERATURE 40 35 30 25 20 −40 0 25 85 TJ − Junction Temperature − °C HRds 25 LRds 20 15 −40 0 25 85 TJ − Junction Temperature − °C 650 SYNC ≥ 2.
PAGE 8
TPS54617 SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 ........................................................................................................................................... www.ti.com APPLICATION INFORMATION Figure 10 shows the schematic diagram for a typical TPS54617 application. The TPS54617 (U1) can provide up to 6A of output current at a nominal output voltage of 1.8 V.
PAGE 9
TPS54617 www.ti.com ........................................................................................................................................... SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 FEEDBACK CIRCUIT The values for these components are selected to provide fast transient response times. The resistor divider network of R1 and R2 sets the output voltage for the circuit at 1.8 V. R1 along with R6, R7, C5, C7, and C10 forms the loop compensation network for the circuit.
PAGE 10
TPS54617 SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 ........................................................................................................................................... www.ti.
PAGE 11
TPS54617 www.ti.com ........................................................................................................................................... SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 PERFORMANCE GRAPHS EFFICIENCY vs OUTPUT CURRENT LOAD REGULATION vs OUTPUT CURRENT 89 Percent Deviation - % Efficiency − % 83 77 71 VI = 3 V VI = 3.3 V VI = 5 V 65 59 VI = 6 V 53 fs = 1600 kHz VO = 1.8 V 47 41 35 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 -0.05 -0.1 -0.15 -0.2 -0.25 -0.3 -0.
PAGE 12
TPS54617 SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 ........................................................................................................................................... www.ti.com VBIAS Regulator (VBIAS) DETAILED DESCRIPTION Under Voltage Lock Out (UVLO) The TPS54617 incorporates an under voltage lockout circuit to keep the device disabled when the input voltage (VIN) is insufficient.
PAGE 13
TPS54617 www.ti.com ........................................................................................................................................... SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 Table 1. Summary of the Frequency Selection Configurations SWITCHING FREQUENCY SYNC PIN RT PIN 350 kHz, internally set Float or AGND Float 550 kHz, internally set ≥ 2.5 V Float Externally set 280 kHz to 1.
PAGE 14
TPS54617 SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 ........................................................................................................................................... www.ti.com Thermal Shutdown Power Good (PWRGD) The device uses the thermal shutdown to turn off the power MOSFETs and disable the controller if the junction temperature exceeds 150°C.
PAGE 15
PACKAGE OPTION ADDENDUM www.ti.
PAGE 16
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 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 TPS54617RUVR VQFN RUV 34 3000 330.0 16.4 3.85 7.35 1.2 8.0 16.0 Q1 TPS54617RUVT VQFN RUV 34 250 180.0 16.4 3.85 7.35 1.2 8.0 16.
PAGE 17
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS54617RUVR VQFN RUV 34 3000 367.0 367.0 38.0 TPS54617RUVT VQFN RUV 34 250 210.0 185.0 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.