Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - DC/DC voltage regulator Holder HTSSOP 28

6,4 mm X 9,7 mm

Typical Size

www.ti.com

FEATURES DESCRIPTION

APPLICATIONS

SIMPLIFIED SCHEMATIC

100

0 1 2 3 4 5 6

Load Current − A

Efficiency − %

EFFICIENCY AT 350 kHz

= 5 V,

= 3.3 V

VIN PH

BOOT

PGND

VSENSE

Output

COMPAGND

VBIAS

Input

TPS54610

SLVS398F – JUNE 2001 – REVISED APRIL 2007

3-V TO 6-V INPUT, 6-A OUTPUT SYNCHRONOUS BUCK PWM

SWITCHER WITH INTEGRATED FETs (SWIFT™)

• 30-m Ω , 12-A Peak MOSFET Switches for High

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

Efficiency at 6-A Continuous Output Source

regulators, the TPS54610 low-input voltage

or Sink Current

high-output current synchronous buck PWM

converter integrates all required active components.

• Adjustable Output Voltage Down to 0.9 V With

Included on the substrate with the listed features are

1.0% Accuracy

a true, high performance, voltage error amplifier that

• Wide PWM Frequency: Fixed 350 kHz, 550 kHz

enables maximum performance and flexibility in

or Adjustable 280 kHz to 700 kHz

choosing the output filter L and C components; an

under-voltage-lockout circuit to prevent start-up until

• Synchronizable to 700 kHz

the input voltage reaches 3 V; an internally or

• Load Protected by Peak Current Limit and

externally set slow-start circuit to limit inrush

Thermal Shutdown

currents; and a power good output useful for

• Integrated Solution Reduces Board Area and

processor/logic reset, fault signaling, and supply

Component Count

sequencing.

• SWIFT Documentation, Application Notes, and

The TPS54610 is available in a thermally enhanced

Design Software: www.ti.com/swift

28-pin TSSOP (PWP) PowerPAD™ package, which

eliminates bulky heatsinks. TI provides evaluation

modules and the SWIFT™ designer software tool to

aid in quickly achieving high-performance power

• Low-Voltage, High-Density Distributed Power

supply designs to meet aggressive equipment

Systems

development cycles.

• Point of Load Regulation for High

Performance DSPs, FPGAs, ASICs and

Microprocessors

• Broadband, Networking and Optical

Communications Infrastructure

• Portable Computing/Notebook PCs

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.

SWIFT, PowerPAD are trademarks 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 (24 pages)

PAGE 1
Typical Size 6,4 mm X 9,7 mm TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 3-V TO 6-V INPUT, 6-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT™) FEATURES • • • • • • • DESCRIPTION 30-mΩ, 12-A Peak MOSFET Switches for High Efficiency at 6-A Continuous Output Source or Sink Current Adjustable Output Voltage Down to 0.9 V With 1.
PAGE 2
TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 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. ORDERING INFORMATION (1) (2) TA OUTPUT VOLTAGE PACKAGE (1) (2) PART NUMBER 40°C to 85°C Adjustable down to 0.9 V Plastic HTSSOP (PWP) TPS54610PWP The PWP package is also available taped and reeled.
PAGE 3
TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 ELECTRICAL CHARACTERISTICS over operating free-air temperature range unless otherwise noted PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE, VIN Input voltage range, VIN I(Q) Quiescent current 3 6 fs = 350 kHz, SYNC ≤ 0.8 V, RT open, PH pin open 11 15.8 fs = 550 kHz, SYNC ≥ 2.5 V, RT open, PH pin open 16 23.5 Shutdown, SS/ENA = 0 V 1 1.4 2.95 3.
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TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range unless otherwise noted PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 70 85 ns 1.20 1.40 V PWM COMPARATOR PWM comparator propagation delay time,PWM comparator input to PH pin (excluding deadtime) 10-mV overdrive (1) SLOW-START/ENABLE Enable threshold voltage, SS/ENA 0.82 Enable hysteresis voltage, SS/ENA Falling edge deglitch, 0.03 SS/ENA (1) V µs 2.
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TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 PWP PACKAGE (TOP VIEW) AGND VSENSE COMP PWRGD BOOT PH PH PH PH PH PH PH PH PH 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 THERMAL 22 PAD 21 20 19 18 17 16 15 RT SYNC SS/ENA VBIAS VIN VIN VIN VIN VIN PGND PGND PGND PGND PGND Terminal Functions TERMINAL DESCRIPTION NAME NO. AGND 1 Analog ground. Return for compensation network/output divider, slow-start capacitor, VBIAS capacitor, RT resistor and SYNC pin.
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TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 VBIAS AGND VIN Enable Comparator SS/ENA Falling Edge Deglitch 1.2 V Hysteresis: 0.03 V 2.5 µs VIN UVLO Comparator VIN 2.95 V Hysteresis: 0.16 V REG VBIAS SHUTDOWN VIN ILIM Comparator Thermal Shutdown 150°C 3−6V Leading Edge Blanking Falling and Rising Edge Deglitch 100 ns BOOT 30 mΩ 2.5 µs SS_DIS SHUTDOWN Internal/External Slow-start (Internal Slow-start Time = 3.35 ms PH + − R Q Error Amplifier Reference VREF = 0.
PAGE 7
TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 TYPICAL CHARACTERISTICS VIN = 3.3 V IO = 6 A 50 40 30 20 10 0 25 85 TJ − Junction Temperature − °C 60 VIN = 5 V 50 IO = 6 A 40 30 20 10 0 −40 125 0 25 85 TJ − Junction Temperature − °C 125 750 650 SYNC ≥ 2.5 V 550 450 SYNC ≤ 0.8 V 350 250 −40 25 85 125 Figure 2. Figure 3.
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TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 APPLICATION INFORMATION provide greater than 6 A of output current at a nominal output voltage of 3.3 V. For proper thermal performance, the exposed thermal PowerPAD underneath the integrated circuit package must be soldered to the printed-circuit board. Figure 10 shows the schematic diagram for a typical TPS54610 application. The TPS54610 (U1) can VI + C2 220 µF 10 V U1 TPS54610PWP 28 R2 10 kΩ VIN VIN 27 26 25 C1 0.
PAGE 9
TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 COMPONENT SELECTION The values for the components used in this design example were selected using the SWIFT designer software tool. SWIFT designer provides a complete design environment for developing dc-dc converters using the TPS54610. INPUT FILTER The input to the circuit is a nominal 5 VDC. The input filter C2 is a 220-µF POSCAP capacitor, with a maximum allowable ripple current of 3 A.
PAGE 10
TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 Connect the bias capacitor from the VBIAS pin to analog ground using the isolated analog ground trace. If a slow-start capacitor or RT resistor is used, or if the SYNC pin is used to select 350-kHz operating frequency, connect them to this trace.
PAGE 11
TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 LAYOUT CONSIDERATIONS FOR THERMAL PERFORMANCE For operation at full rated load current, the analog ground plane must provide an adequate heat dissipating area. A 3-inch by 3-inch plane of 1 ounce copper is recommended, though not mandatory, depending on ambient temperature and airflow. Most applications have larger areas of internal ground plane available, and the PowerPAD must be connected to the largest area available.
PAGE 12
TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 PERFORMANCE GRAPHS (1) EFFICIENCY vs OUTPUT CURRENT EFFICIENCY vs OUTPUT CURRENT 100 100 95 95 90 90 LOAD REGULATION vs OUTPUT CURRENT 1.004 VI = 5 V, VO = 3.3 V, TA = 25°C, fs = 550 kHz 1.003 VO = 1.8 V 75 70 VO = 1.2 V 65 55 VO = 3.3 V 80 VO = 1.8 V 75 VO = 1.2 V 70 65 VI = 3.3 V, f = 550 kHz, L = 4.7 µH, TA = 25°C 60 VI = 5 V, f = 550 kHz, L = 4.7 µH, TA = 25°C 60 55 2 3 4 5 IO − Output Current − A 6 7 0.
PAGE 13
TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 Figure 22 shows the schematic diagram for a reduced size, high frequency application using the TPS54610. The TPS54610 (U1) can provide up to 6 A of output current at a nominal outputvoltage of 1.8 V. A small size 0.56 uH inductor is used and the switching frequency is set to 680 kHz by R1. The compensation network is optimized for fast transient response as shown in Figure 22.
PAGE 14
TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 DETAILED DESCRIPTION UNDERVOLTAGE LOCK OUT (UVLO) VBIAS REGULATOR (VBIAS) The TPS54610 incorporates an under voltage lockout circuit to keep the device disabled when the input voltage (VIN) is insufficient. During power up, internal circuits are held inactive until VIN exceeds the nominal UVLO threshold voltage of 2.95 V. Once the UVLO start threshold is reached, device start-up begins.
PAGE 15
TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 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 700 kHz Float R = 180 kΩ to 68 kΩ Externally synchronized frequency Synchronization signal R = RT value for 80% of external synchronization frequency ERROR AMPLIFIER The high performance, wide bandwidth, voltage error amplifier sets the TPS54610 apart from most dc/dc converters.
PAGE 16
TPS54610 www.ti.com SLVS398F – JUNE 2001 – REVISED APRIL 2007 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. The device is released from shutdown automatically when the junction temperature decreases to 10°C below the thermal shutdown trip point, and starts up under control of the slow-start circuit. The power good circuit monitors for under voltage conditions on VSENSE.
PAGE 17
PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
PAGE 19
PACKAGE MATERIALS INFORMATION www.ti.com 12-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device TPS54610PWPR Package Package Pins Type Drawing SPQ HTSSOP 2000 PWP 28 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 330.0 16.4 Pack Materials-Page 1 6.9 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10.2 1.8 12.0 16.
PAGE 20
PACKAGE MATERIALS INFORMATION www.ti.com 12-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS54610PWPR HTSSOP PWP 28 2000 367.0 367.0 38.
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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.