As a member of the SWIFT™ family of dc/dc regulators, the TPS54010 low-input voltage, high-output current synchronous buck PWM converter integrates all required active components

TPS54010

Manufacturer Part NumberTPS54010
DescriptionAs a member of the SWIFT™ family of dc/dc regulators, the TPS54010 low-input voltage, high-output current synchronous buck PWM converter integrates all required active components
ManufacturerTexas Instruments
TPS54010 datasheet
 


Specifications of TPS54010

Iout(max)(a)14Vin(min)(v)2.2
Vin(max)(v)4Vout(min)(v)0.9
Vout(max)(v)2.5Iq(typ)(ma)13
Switching Frequency(max)(khz)700Switch Current Limit(typ)(a)14.5
TopologyBuckOperating Temperature Range(c)-40 to 85
Pin/package28HTSSOPDuty Cycle(max)(%)90
Regulated Outputs(#)1  
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2.2 – 4 -V, 14-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER
FEATURES
Separate Low-Voltage Power Bus
8-m
MOSFET Switches for High Efficiency at
14-A Continuous Output
Adjustable Output Voltage Down to 0.9 V
Externally Compensated With 1% Internal
Reference Accuracy
Fast Transient Response
Wide PWM Frequency: Adjustable 280 kHz to
700 kHz
Load Protected by Peak Current Limit and
Thermal Shutdown
Integrated Solution Reduces Board Area and
Total Cost
SWIFT Documentation, Application Notes, and
Design Software:
www.ti.com/swift
APPLICATIONS
Low-Voltage, High-Density Systems With
Power Distributed at 2.5 V, 3.3 V Available
Point of Load Regulation for High-
Performance DSPs, FPGAs, ASICs, and
Microprocessors
Broadband, Networking, and Optical
Communications Infrastructure
SIMPLIFIED SCHEMATIC
2.5 V or 3.3 V
Input1
PVIN
TPS54010
350 mF
BOOT
PGND
3.3 V
Input2
VIN
COMP
1 mF
VBIAS
VSENSE
AGND
1 mF
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.
Typical Size
6,4 mm X 9,7 mm
WITH INTEGRATED FETs (SWIFT™)
DESCRIPTION
As a member of the SWIFT™ family of dc/dc regu-
lators, the TPS54010 low-input voltage, high-output
current synchronous buck PWM converter integrates
all required active components. Included on the
substrate with the listed features are a true, high-
performance, voltage error amplifier that enables
maximum performance under transient conditions
and flexibility in choosing the output filter L and C
components; an undervoltage-lockout circuit to pre-
vent start-up until the VIN input voltage reaches 3 V;
an internally and externally set slowstart circuit to limit
in-rush currents; and a power-good output useful for
processor/logic reset, fault signaling, and supply se-
quencing.
The TPS54010 is available in a thermally enhanced
28-pin TSSOP (PWP) PowerPAD™ package, which
eliminates bulky heatsinks.
0.68 mH
PH
Output
0.047 mF
0.1 mF
200 mF
120 pF
4.64 kW
10 kW
3300 pF
422 W
14.7 kW
1500 pF
Compensation
Network
TPS54010
SLVS509B – MAY 2004 – REVISED JUNE 2005
EFFICIENCY
vs
OUTPUT CURRENT
100
95
90
85
80
75
70
65
VIN = 3.3 V,
PVIN = 2.5 V,
60
V
= 1.5 V,
O
55
f
= 700 kHz
s
50
0
2
4
6
8
10
12
14
16
I
− Output Current − A
O
Copyright © 2004–2005, Texas Instruments Incorporated

TPS54010 Summary of contents

  • Page 1

    ... VIN input voltage reaches internally and externally set slowstart circuit to limit in-rush currents; and a power-good output useful for processor/logic reset, fault signaling, and supply se- quencing. The TPS54010 is available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD™ package, which eliminates bulky heatsinks. 0. Output 0 ...

  • Page 2

    ... A -40°C to 85°C Adjustible down to 0.9 V (1) The PWP package is also available taped and reeled. Add an R suffix to the device type (i.e., TPS54010PWPR). See the application section of the data sheet for PowerPAD drawing and layout information. ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) ...

  • Page 3

    ... <140 2.95 2.7 2.8 0.11 2.5 2.7 2.8 0.882 0.891 0.05 0.013 280 350 440 550 (1) 252 280 460 500 663 700 2.5 50 300 0.75 1 90% TPS54010 MAX UNIT 1 µ µs 2.9 V 100 µA 0.900 V %/V %/A 420 kHz 660 308 540 kHz ...

  • Page 4

    ... TPS54010 SLVS509B – MAY 2004 – REVISED JUNE 2005 ELECTRICAL CHARACTERISTICS (continued -40°C to 125°C, VIN = PVIN = 2 (unless otherwise noted) J PARAMETER ERROR AMPLIFIER Error amplifier open-loop voltage gain Error amplifier unity gain bandwidth Error amplifier common mode input voltage ...

  • Page 5

    ... PAD TERMINAL FUNCTIONS TPS54010 SLVS509B – MAY 2004 – REVISED JUNE 2005 RT SYNC SS/ENA VBIAS VIN PVIN PVIN PVIN PVIN PGND PGND PGND PGND PGND , otherwise PWRGD is low. Note that ref . s 5 ...

  • Page 6

    ... V Deglitch Hysteresis: 0.03 V 2.5 s VIN UVLO Comparator Falling and VIN Rising 2.95 V Edge Hysteresis: 0.11 V Deglitch 2.5 s Internal/External Slow-start (Internal Slow-start Time = 3.35 ms Reference VREF = 0.891 V TPS54010 VSENSE 6 FUNCTIONAL BLOCK DIAGRAM SHUTDOWN Thermal Leading Shutdown Edge 150 C Blanking 100 ns SS_DIS SHUTDOWN + Error PWM Amplifier Comparator ...

  • Page 7

    ... Gain 20 −160 0 −180 −20 −200 1 10 100 100 − Frequency − Hz Figure 8. TPS54010 SLVS509B – MAY 2004 – REVISED JUNE 2005 INTERNALLY SET OSCILLATOR FREQUENCY vs JUNCTION TEMPERATURE 750 650 SYNC 2.5 V 550 450 SYNC 0.8 V 350 250 −40 ...

  • Page 8

    ... ESR ceramic bypass capacitor. Care should be taken to minimize the loop area formed by the bypass capaci- tor connections, the PVIN pins, and the TPS54010 ground pins. The minimum recommended bypass capacitance is a 10-µF ceramic capacitor with a X5R or X7R dielectric ...

  • Page 9

    ... Area Is Extended. 0.06 0.0339 0.0650 0.0500 0.0500 0.0500 0.0256 0.0650 0.0339 0.1700 0.1340 0.0630 0.0400 SLVS509B – MAY 2004 – REVISED JUNE 2005 0.0150 0.2090 Minimum Recommended Exposed Copper Area for PowerPAD. 5mm Stencils May Require 10 Percent Larger Area TPS54010 9 ...

  • Page 10

    ... PowerPAD underneath the device must be soldered down to the printed-circuit board. DESIGN PROCEDURE The following design procedure can be used to select component values for the TPS54010. Alternately, the SWIFT Designer Software may be used to generate a complete design. The SWIFT Designer Software uses an iterative design procedure and accesses a com- prehensive database of components when generating a design ...

  • Page 11

    ... X5R or X7R is recommended. The voltage rating should be greater than the maximum input voltage. Additionally, some bulk capacitance may be needed, especially if the TPS54010 circuit is not located within about 2 inches from the input voltage source. The value for this capacitor is not critical but it also should ...

  • Page 12

    ... The inductor value can be decreased if more margin in the RMS current is required. In general, inductor values for use with the TPS54010 falls in the range of 0.47 to 2.2 µH. Capacitor Requirements The important design factors for the output capacitor are dc voltage rating, ripple current rating, and equivalent series resistance (ESR) ...

  • Page 13

    ... 0.891 OUT For any TPS54010 design, start with an R1 value 14 Now, the values for the compensation components that set the poles and zeros of the compensation network can be calculated. Assuming that R1 >> than R5 and C6 >> C7, the pole and zero locations are ...

  • Page 14

    ... X5R grade dielectric for temperature stability. They should be placed as close to the device connection pins as possible. POWER GOOD The TPS54010 is provided with a power-good output pin PWRGD. This output is an open-drain output and is intended to be pulled 3.3-V or 5-V logic supply. A 10-k pullup works well in this application. ...

  • Page 15

    ... The difference amplifier of U2 Figure 14 forces the output of the TPS54010 to generate an output voltage that maintains a constant 1.5-V differ- ence -1.5V_REMOTE_SENSE. SLVS509B – MAY 2004 – REVISED JUNE 2005 ...

  • Page 16

    ... TPS54010 SLVS509B – MAY 2004 – REVISED JUNE 2005 330 0.047 14.7 k Figure 15. 2 1.5 V Power Supply with Charge Pump If a suitable 3-V to 4-V source is not available for the VIN supply, a charge pump may be used to boost the PVIN voltage. In this circuit, the charge pump is used to boost a 2.5-V source to a nominal 3.6 V. ...

  • Page 17

    ... LINE REGULATION vs INPUT VOLTAGE 0.3 0.25 0 0.15 0.1 0. -0. 14A O -0.1 -0.15 -0.2 -0. PVIN - V Figure 18. OUTPUT VOLTAGE RIPPLE mV/div (ac coupled) O(RIPPLE V( V/div O Time = 500 nsec/div Figure 21. START-UP WAVEFORM OUTPUT VOLTAGE RELATIVE TO VIN VIN = 1 V/div V/div O Time = 10 msec/div Figure 24. TPS54010 3 ...

  • Page 18

    ... TPS54010 SLVS509B – MAY 2004 – REVISED JUNE 2005 The performance data for Figure 25 V, VIN = 3 1 700 kHz, and FREE-AIR TEMPERATURE vs MAXIMUM OUTPUT CURRENT 125 115 PVIN = 105 T = 125 Safe Operating Area ...

  • Page 19

    ... SS/ENA pin low until the 2.5-V bus power is good. An example of this is shown in also be used to prevent the TPS54010 output from following the PVIN input while the PVIN power supply is ramping up. TPS54010 SLVS509B – ...

  • Page 20

    ... The only components that must tie directly to the power ground plane are the input capacitor, the output capacitor, the input voltage decoupling capaci- tor, and the PGND pins of the TPS54010. UNDERVOLTAGE LOCKOUT (UVLO) The TPS54010 incorporates an undervoltage-lockout circuit to keep the device disabled when the input voltage (VIN) is insufficient ...

  • Page 21

    ... The trim procedure adds to the high-precision TPS54010, because it cancels offset errors in the scale and error amplifier circuits. OSCILLATOR AND PWM RAMP The oscillator frequency is set to an internally fixed value of 350 kHz. The oscillator frequency can be externally adjusted from 280 to 700 kHz by con- necting a resistor between the RT pin to ground ...

  • Page 22

    ... TPS54010 SLVS509B – MAY 2004 – REVISED JUNE 2005 DEAD-TIME CONTROL AND MOSFET DRIVERS Adaptive dead-time control prevents shoot-through current from flowing in both N-channel power MOSFETs during the switching transitions by actively controlling the turn-on times of the MOSFET drivers. The high-side driver does not turn on until the voltage at the gate of the low-side FET is below 2 V ...

  • Page 23

    ...

  • Page 24

    ... TPS54010PWP ACTIVE TPS54010PWPG4 ACTIVE TPS54010PWPR ACTIVE TPS54010PWPRG4 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design ...

  • Page 25

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing TPS54010PWPR HTSSOP PWP PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 28 2000 330.0 16.4 6.9 Pack Materials-Page 1 18-May-2010 Pin1 (mm) (mm) (mm) (mm) Quadrant 10.2 1.8 12.0 16.0 Q1 ...

  • Page 26

    ... Device Package Type TPS54010PWPR HTSSOP PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) PWP 28 2000 Pack Materials-Page 2 18-May-2010 Width (mm) Height (mm) 346.0 346.0 33.0 ...

  • Page 27

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  • Page 29

    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...