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An Analog Product Catalog

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Inside

Power Supply ControlSecondary-Side Synchronous Buck PWM Controller ......................................2

Interleaved Converter .............................2

Current Mode PWM Controllers ............3

Advanced PFC/PWM CombinationController ...............................................3

Leading-Edge Modulation ReducesRipple Current in AC/DC Applications ...4

High-Speed Synchronous Buck Drivers..4

Dual 4-A Industry Standard MOSFET Drivers......................................5

DC/DC ConversionEnhanced, Low-Input Buck Controller ....5

Wide Input Buck Controller ....................6

Midrange Input Buck DC/DC Controller ..6

2-, 3-, or 4-Channel Multiphase DC/DC Controller ....................................7

Dual-Channel, DDR-SelectableSynchronous Buck Controller .................7

General-Purpose, Dual-Channel,Synchronous Buck DC/DC Controller .....8

Low-Voltage 1.5-A Step-DownConverter.................................................8

4.5 to 20 VIN, 3-A Converter...................9

Sequencing Step-Down Converter.........9

800-mA Step-Down Converter .............10

Cap-Free 400-mA LDO..........................10

Synchronous Boost Converter ..............11

Power-over-EthernetSecond-Generation 802.3af and LegacyPowered Device Controllers...................12

Power-over-Ethernet Octal Power Sourcing Equipment Power Managers ....12

Hot-Swap ControllersPositive High-Voltage Hot Swap.............13

Redundant OR-ing Hot Swap.................13

System Power Management3Q 2004

Single-Chip PWM Controller for

Interleaved Converters

UCC28220, UCC28221

Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/UCC28220www.ti.com/sc/device/UCC28221

Key Features• 2-MHz high-frequency oscillator with 1-MHz operation per channel• Integration of two PWM channels operating at 180° out of phase

controls one high current output • Programmable internal slope compensation with precise current

matching• Programmable maximum duty cycle clamp from 60% to 90% per

channel• Peak current mode control with cycle-by-cycle current limit• Accurate line under- and over-voltage sense with programmable

hysteresis• UCC28220 for off-line converters or low input voltage systems• UCC28221 includes 110-V startup circuitry for 24-V to 48-V input

systems• Programmable soft-start• Packaging: Available in SOIC-16, TSSOP-16 (both UCC28220 and

UCC28221), TSSOP-16 (UCC28220), and TSSOP-20 (UCC28221)• Suggested resale price starts at $1.60 each in quantities of 1,000

ApplicationsHigh current, high efficiency interleaved off-line and DC/DC converters in 150-W to 800-W power range switch mode power supplies for end equipment such as:• Server and workstation power• Industrial control power• Telecom, datacom, networking power

Typical Application Diagram

VIN(+48 V)

E/A

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

LINEOV

LINE

HYS

VDD

CS1

CS2

SS

CTRL

VIN

LINEUV

REF

OUT1

OUT2

GND

CHG

DISCHG

UCC28221D

VIN(+48 V)

REF

VOUT

1/2 UCC27324

1/2 UCC27324

CS1

CS2

2 System Power Management Sine On Texas Instruments 3Q 2004

Power Supply Control

P

R O D U C T

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AM P L E

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D A T AS H E E T S EVALUATION

M O D U L E

A P PR E P O R T

High Efficiency Secondary-Side

Synchronous Buck PWM Controller

UCC2540

Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/UCC2540

Key Features• Three bias modes provides flexibility of operation from typical rails

of 3.3 V to 24 V• On-chip Predictive Gate Drive™ technology minimizes body diode

conduction and reverse recovery losses for higher efficiency• Dual ±3-A True Drive™ outputs efficiently drive high gate charge

synchronous buck MOSFETs • Tracking pin provides easy output sequencing using sequential,

ratiometric or simultaneous methods • Leading-edge modulation works with primary-side control of either

peak current mode or voltage mode • Over-current protection, reverse-current protection, and user-

programmable shutdown give robust protection for the power stageagainst output shorts, and other over-current events

• 1% Reference over line, load and temperature• Packaging: Available in 20-pin HTSSOP PowerPADTM package• Suggested resale price starts at $1.85 each in quantities of 1,000

Applications• Secondary-side post regulation (SSPR) for multiple output power

supplies • Cascaded buck converters• Post processing converters for bus converter and DC transformer

architectures


OUT1 OUT2

UCC3808A

VFB

AUXOUT1

MAINOUTPUT

14

18

4

G2

G1

SYNCHIN

UCC2540

Q2Q1

C1INPUT

P

R O D U C T

S

AM P L E

S


M O D U L E

A P PR E P O R T

Texas Instruments 3Q 2004 System Power Management Sine On 3


LineMonitor

FB CS

AUX

OUT

VIN

VIN VOUT

UCC2891/7

P

R O D U C T

S

AM P L E

S


M O D U L E

A P PR E P O R T

Active Clamp/Reset Current Mode

Soft-Switching PWM Controllers

UCC2891, UCC2892, UCC2893, UCC2894, UCC2897

Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/PARTnumber(Replace PARTnumber with UCC2891, UCC2892, UCC2893, UCC2894, or UCC2897)

Key Features• Provides complementary auxiliary driver with programmable

deadtime (turn-on delay) between AUX and MAIN switches• Peak current mode control with cycle-by-cycle current limiting • TrueDrive™ 2-A sink, 2-A source outputs• 110-V input startup circuitry on UCC2891 and UCC2894 for 24-V

to 48-V input systems• Trimmed internal bandgap reference for accurate line UV and line

OV threshold• Programmable slope compensation• Precise programmable maximum duty cycle limit from 55% to 85%• Hiccup mode over current protection, bidirectional sync and input

OV protection (UCC2897)• Packaging: Available in 16-pin SOIC (UCC2891, UCC2892, UCC2893,

UCC2894), 16-pin TSSOP (UCC2892, UCC2894), and coming soon: 16-pin TSSOP (UCC2891 and UCC2893), 20-pin TSSOP (UCC2897)

• Suggested resale price starts at $1.45 each in quantities of 1,000

ApplicationsHigh efficiency and low EMI/RFI designs in off-line and DC/DC converters in power supplies for end equipment including:• Server power• Telecom, datacom• Automotive systems• Consumer systems such as LCD TV and PDP TV


Advanced PFC/PWM Combination

Controller for Off-Line Power Converters

UCC28510 through UCC28517

Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/PARTnumber(Replace PARTnumber with UCC28510, UCC28511, UCC28512, UCC28513,UCC28514, UCC28515, UCC28516, or UCC28517)

Key Features• Combines PFC and PWM power stages in one chip• Trailing-edge/leading-edge modulation minimizes ripple current

in boost capacitor • 3-A sink/2-A source gate drives provide efficient MOSFET

switching without external drivers• Multiple UVLO options optimize startup and turn-off behaviors

for differing biasing schemes • Two PWM UVLO hysteresis options for different load transient

requirements and hold-up time • Packaging: Available in 20-pin SOIC (wide), 20-pin PDIP• Suggested resale price starts at $1.80 each in quantities of 1,000

PFC Features Include:• Transconductance amplifier for enhanced transient response• Improved power factor and THD through improved multiplier

PWM Features Include:• Programmable max duty cycle up to 90% protects downstream

power stage • 1x:2x PFC:PWM frequency options allow smaller PWM components

while minimizing losses in PFC

Applications• Desktop and server computer power converters• Distribution power system front ends• Monitor and display systems


PFC PWM

IAC

CSI

GT1

VERR

VSNS

CS2

GT2

UCC28510 to UCC28517

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High-Speed Synchronous Buck Drivers

with Enable

UCC27223

Get samples, datasheets and app reports at:www.ti.com/sc/device/UCC27223

Key Features• TI’s Predictive Gate Drive™ technology provides 2 to 4% efficiency

gains over competing adaptive technologies and reduces MOSFETpower dissipation by 20 to 40%

• ±3-A TrueDrive™ output gate drive architecture provides high currents at the Miller Plateau MOSFET switching thresholds

• 6.5-V on-board gate drive regulator optimizes power MOSFET gatedrive for 5-V to 12-V input voltages

• ENABLE pin controls operation of both outputs, internal logic latchto keep both outputs low until the first PWM pulse comes in

• Packaging: Available in 14-pin PowerPAD™ TSSOP• Suggested resale price starts at $1.55 each in quantities of 1,000

Applications• Non-isolated, high-frequency, low output voltage DC/DC

converters• Multiphase converters for processor power in combination with

TPS40090• 12-V or 5-V inputs (or 3.3 VIN with 12-V bus rail) to output

voltages as low as 0.8-V• CPU power, general computer, telecom, datacomm and merchant

power applications


A P PR E P O R T

UCC27223

ENBL

VDD

VLO

PVLO

AGND

IN

VHI

G1

SW

SWS

G2S

G2

PGND

R1

D1

GNDGND

ENABLE

PWMInput

C1

C2

Q1

Q2

L1VOUT

COUT

CIN

VIN

N/C

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D A T AS H E E T S

Leading-Edge Modulation Reduces

Ripple Current in AC/DC Applications

UCC2817A, UCC3817A, UCC2818A, UCC3818A,

UCC2819A, UCC3819A

Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/PARTnumber(Replace PARTnumber with UCC2817A, UCC3817A, UCC2818A,UCC3818A, UCC2819A or UCC3819A)

Key Features• Leading-edge modulation• Controls boost preregulator to near unity power factor• Limits line distortion• Average current mode control• Improved feed-forward line regulation• Improved noise immunity • Over-voltage protection• Packaging: Available in 16-pin SOIC, 16-pin PDIP, and 16-pin TSSOP• Suggested resale price starts at $1.15 each in quantities of 1,000

Applications• Off-line power supply from 75 W to 2 kW that must meet

EN6100-1-2 harmonic reduction requirements and/or operate over a wide or universal input voltage range (85 V to 270 VAC)

• Desktop and server computer power converters• Distribution power system front ends• Monitor and display systems


UCC3817

ISENSE

GTDRV

VFB

VOUTRectified AC Line

IAC/VFF

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M O D U L E

A P PR E P O R T


Power Supply Control DC/DC Conversion

Family of Dual 4-A Industry Standard

MOSFET Drivers with Enable

UCC27423, UCC27424, UCC27425

Get samples and datasheets at:www.ti.com/sc/device/PARTnumber(Replace PARTnumber with UCC27423, UCC27424, or UCC27425)

Key Features• Independent enable function provides flexibility in startup and

shutdown operations• Delivers large 4-A peak currents into capacitive loads with TI’s

TrueDrive™ output stage• 4-V to 15-V supply voltage• TTL/CMOS compatible inputs independent of supply voltage • 20-ns typ rise and 15-ns typ fall with 1.8-nF load and VDD-14 V• Typical propagation delay times of 25 ns with input falling and

35 ns with input rising• Dual outputs can be paralleled for higher drive-current• Packaging: Available in 8-pin SOIC, 8-pin PDIP,

8-pin PowerPAD™ MSOP• Suggested resale price starts at $1.10 each in quantities of 1,000

Applications• Switch mode power supplies• DC/DC converters • Motor controllers• Line drivers• Class-D switching amplifiers• Synchronous rectifier drivers• For use with any driver-less switching controllers or to provide

drive capability

Typical Block Diagram

2

3

4

1

INA

GND

INB

ENBA

8

7

6

5

ENBB

OUTA

VDD

OUTB

100 k

100 k

VDD

Non-Inverting

Inverting

Non-Inverting

Inverting

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D A T AS H E E T S

Enhanced, Low-Input (2.25 V to 5.5 V)

High-Current Synchronous Buck

Controller

TPS40020, TPS40021

Get samples, datasheets, app reports, EVMs and software tool at:www.ti.com/sc/device/TPS40020www.ti.com/sc/device/TPS40021

Key Features• Operating input voltage 2.25 V to 5.5 V• Output voltage as low as 0.7 V• 1% internal 0.7-V reference• Predictive Gate Drive™ N-channel MOSFET drivers for higher

efficiency• Externally adjustable soft-start and over-current limit• Programmable fixed-frequency 100-KHz to 1-MHz voltage-mode

control• Source-only current or source/sink current• Quick response output transient comparators with Power Good

indication provide output status • Externally synchronizable to 1.5 X fOSC• On-chip charge pump provides enhanced gate drive for higher

current requirements• Low power shutdown mode• Packaging: Available in 16-pin PowerPAD™ TSSOP• Suggested resale price starts at $1.15 for PWP and $1.87 each

for PWPR in quantities of 1,000

Applications• Network equipment• Telecom equipment• Base stations• Servers• DSP power


1

2

3

4

5

6

7

8

VDD

OSNS

FB

COMP

SS/SD

RT

SGND

16ILIM/SYNC

HDRV

BOOT1

1 k

10 k10 k

10 k

15.7 k

15.7 k

120 uF 1 µF

1 µF

10 µF

SW

BOOT2

PVDD

LDRV

PGND

PGD

15

14

13

12

11

10

9

27 n

VDD

VDD 2.25 V to 5.5 V

VOUT

VOUT

VDD

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M O D U L E

A P PR E P O R T

TPS40K™/SWIFT™ SOFTWARE TOOL


DC/DC Conversion

Midrange Input, High-Efficiency

(4.5 V to 28 V) Synchronous Buck DC/DC

Controller with Voltage Feed Forward

TPS40070, TPS40071

Get samples, datasheets, app reports, EVMs and software tool at:www.ti.com/sc/device/TPS40070www.ti.com/sc/device/TPS40071

Key Features• Operation over 4.5-V to 28-V input range• Programmable fixed-frequency up to 1 MHz• Voltage-mode controller• Predictive Gate Drive™ technology with anti-cross

conduction circuitry• <1% Internal 700-mV reference• Internal gate drive outputs for high-side and synchronous

N-channel MOSFETs• Thermal shutdown protection• TPS40070: source only• TPS40071: source/sink• Programmable high-side sense short circuit protection• Packaging: Available in 16-pin HTSSOP PowerPAD™ (PWP)• Suggested resale price starts at $1.35 each in quantities of 1,000

Applications• Networking equipment• Telecom equipment• Base stations• Servers


1

2

3

4

5

6

7

8

RT

LVDP

PGD

SGND

SS

FB

COMP

16

VDD

ILIMKFF

BOOST

HDRV

SW

BP10

LDRV

PGND

15

14

13

12

11

10

9

TPS40070PWPVDD VDD

VOUT

VOUT Power Good


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AM P L E

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M O D U L E

A P PR E P O R T

Wide Input Voltage (8 V to 40 V)

Synchronous Buck Controller

TPS40054, TPS40055, TPS40057

Get samples, datasheets, app reports, EVMs and software tool at:www.ti.com/sc/device/PARTnumber(Replace PARTnumber with TPS40054, TPS40055, or TPS40057)

Key Features• Operating input voltage 8 V to 40 V• Input voltage feed-forward compensation• 1% internal 0.7-V reference• Programmable fixed frequency 100-K to 1-MHz voltage-mode

controller• Internal gate drive outputs for high-side and synchronous

N-channel MOSFETs• Thermal shutdown• Externally synchronizable• TPS40054: source only• TPS40055: source/sink• TPS40057: source/sink with VOUT prebias• Programmable high-side sense short circuit protection• Programmable closed-loop soft-start• Internal diode for the high-side gate drive boost voltage• Packaging: Available in 16-pin PowerPAD™ • Suggested resale price starts at $1.35 each in quantities of 1,000

Applications• Networking equipment• Telecom equipment• Base stations• Servers


VOUT

1

2

3

4

5

6

7

8

RT

BP5

SYNC

SGND

SS

VFB

COMP

16

VIN

ILIMKFF

BOOST

HDRV

SW

BP10

LDRV

PGND

15

14

13

12

11

10

9

TPS4005xPWP

+

–

VIN

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AM P L E

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M O D U L E

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DC/DC Conversion

Notebook Power, Dual-Channel, DDR

Selectable Synchronous Buck Controller

TPS51020

Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/TPS51020

Key Features• Wide input voltage range: 4.5 V to 28 V• Selectable dual and DDR modes• Selectable fixed-frequency voltage mode• Integrated selectable output discharge• Advanced Power Good logic monitors both channels• Selectable autoskip mode• Integrated boot-strap diodes• 180° phase shift between channels• Integrated 5-V, 60-mA regulator• Input feed-forward control• 1% internal 0.85-V reference• RDS(on) over-current detection (4200 ppm/°C)• Integrated OVP, UVP and Power Good timers• Packaging: Available in 30-pin TSSOP (DBT)• Suggested resale price starts at $3.15 each in quantities of 1,000

Applications• Notebook computers system bus and I/O• DDR or DDR2 termination


VIN

VOUT2(3.3 V)

VOUT1(5 V)

(5 V)60 mA

(10 V)2 mA

VO1_VDDQ

VBST1

OUT1_U

LL1

OUT1_D

INV1

VREG5

VO2

VBST2

OUT2_U

LL2

OUT2_D

INV2

REF_X

VIN

GND

TPS51020DBT

22

1

27

28

29

30

5

8

15

19

18

17

16

11

7

24

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AM P L E

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M O D U L E

A P PR E P O R T

High Frequency, 2-, 3-, or 4-Channel

Multiphase DC/DC Controller

TPS40090


Key Features• Two-, three-, or four-phase operation• 4.5-V to 15-V operating range• Programmable switching frequency up to 1 MHz/phase• Current mode control with forced current sharing • 1% internal 0.7-V reference• True remote sensing differential amplifier• Resistive or DCR current sensing• Current sense fault protection• Programmable load line• Compatible with UCC27222 and TPS2834 drivers • Packaging: Available in 24-pin TSSOP (PW)• Suggested resale price starts at $1.90 each in quantities of 1,000

Applications• Internet servers• Network equipment• Telecommunications equipment• DC power distributed systems


L1

L2

COUT

BP5

CBP5

RILIM

CSS

RRT

RDROOP

CFB1RFB3

RFB1RFB2VOUT

(0.7 to 3.5 V)

VIN(4.5 to 15 V)

CIN

RCS1

RCS3

CCS3

CCS1

TISyncBuckDriver

TISyncBuckDriver

2 3

4

14 5

1

23

21

20

18

19

TPS40090PWCS3

CSCN

CS1

VIN

PWM1

PWM2

PWM4

PWM3

22

6

17

15

16

7

8

24

9

10

11

13

12

CS2

CS4

PGOOD

BP5

ILIM

GND

SS

RT

DROOP

REF

EN/SYNC

COMP

FB

DIFFO

GNDS

VOUT

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AM P L E

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M O D U L E

A P PR E P O R T


DC/DC Conversion

Low-Voltage, 1.5-A, 700-kHz

Synchronous Buck Step-Down Converter

TPS54110

Get samples, datasheets, app reports, EVMs and software tool at:www.ti.com/sc/device/TPS54110

Key Features• Operating input voltage range: 3 V to 6 V• Integrated 3-A MOSFET switches for high efficiency at 1.5-A

continuous source or sink• Output voltage adjustable down to 0.9 V with 1% accuracy• Wide PWM frequency – fixed 350 kHz, 550 kHz or adjustable

280 kHz to 700 kHz• Fast transient response• Externally compensated for design flexibility• Load protected by peak current limit and thermal shutdown• Adjustable slow start• Synchronizes to external clock• Packaging: Available in 20-pin PowerPAD™ HTSSOP• Suggested resale price starts at $2.15 each in quantities of 1,000

Applications• Low-voltage, high-density systems with power distributed at

5 V or 3.3 V• Point-of-load regulation for high-performance DSPs, FPGAs, ASICs

and microprocessors• Broadband, networking, and optical communications infrastructure

Other Similar SWIFT™ DC/DC ConvertersDevice IOUT Package Price1

TPS54310 3 A 20-HSTTOP 2.90TPS54610 6 A 28-HTSSOP 3.95

1Suggested resale price in U.S. dollars in quantities of 1,000.


3-V to 6-VInput

CompensationNetwork

OutputVIN

VBIASVSENSE

AGND

PGND

BOOT

PH

COMP

TPS54110

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General-Purpose, Dual-Channel

Synchronous Buck DC/DC Controller

TPS5124


Key Features• Input voltage range 4.5 V to 15 V and 6.5 V to 15 V • High efficiency—no current sense resistor required, RDS(on)

over-current detection with temperature compensation• Adjustable output voltage down to 0.9 V• Voltage-mode PWM control: Maximum 500-kHz operation• 180° out-of-phase control• Individual standby and soft-start for each channel—easy power

sequencing• Over-voltage and under-voltage protection• Built-in boot-strap diode• Built-in 5-V linear regulator• Accurate ±1% 0.85-V reference• Packaging: Available in 30-pin TSSOP (DBT)• Suggested resale price starts at $2.75 each in quantities of 1,000

Applications• Consumer game systems• DSP applications• Digital set-top boxes• VGA and sound boxes


VIN

VOUT2(3.3 V)

VOUT1(5 V)

(5 V)10 mA

FB1

LH1

OUT1_U

LL1

OUT1_D

INV1

VREF5

FB2

LH2

OUT2_U

LL2

OUT2_D

INV2

VLSD

VCC

GND

TPS5124DBT

22

1

27

28

29

30

2

21

15

19

18

17

16

14

7

24

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DC/DC Conversion

Low-Voltage, 3-A 700-kHz Step-Down

Converter for Sequencing

TPS54380


Key Features• Operating input voltage range: 3 V to 6 V• Power-up/down tracking for sequencing • Integrated MOSFET switches for high efficiency at 3-A continuous

output source or sink current • Wide PWM frequency: fixed 350 kHz or adjustable 280 kHz to

700 kHz • Power Good and enable • Load protected by peak current limit and thermal shutdown• Packaging: Available in 20-pin PowerPAD™ HTSSOP• Suggested resale price starts at $2.95 each in quantities of 1,000

Applications• Low-voltage, high-density systems with power distributed at

5 V or 3.3 V• Point-of-load regulation for high-performance DSPs, FPGAs, ASICs

and microprocessors• Broadband, networking, and optical communications infrastructure

Other Similar SWIFT™ DC/DC ConvertersDevice IOUT Input Voltage Package Price1

TPS54680 6 A 3 V to 6 V 20-HSTTOP 3.95TPS54980 9 A 3 V to 4 V 28-HTSSOP 4.20



Input

1.8-VCore Supply

VIN

VBIAS

TRACKIN

PH

BOOT

PGND

VSENSECOMPAGND

I/O Supply

TPS54380

3.3 V

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4.5-V to 20-V Input, 3-A Step-Down

Converter in TSSOP-16

TPS5435x


Key Features• Operating input voltage range: 4.5 V to 20 V• 4.5-A peak MOSFET switch for high efficiency at 3-A continuous

output current• Uses external low-side MOSFET or diode• Output voltage adjustable down to 0.9 V with 1% accuracy• Wide PWM frequency – fixed 250 kHz, 500 kHz or adjustable

250 kHz to 700 kHz• Load protected by peak current limit and thermal shutdown• Internal slow start• Adjustable under-voltage lockout• Synchronizes to external clock• Packaging: Available in 16-pin PowerPAD™ TSSOP • Suggested resale price starts at $2.35 each in quantities of 1,000

Applications• Industrial and commercial low power systems• Computer peripherals• 9-/12-V wall adapter• Point-of-load regulation for high-performance DSPs, FPGAs, ASICs

and microprocessors

SWIFT™ DC/DC Converters Output Voltage OptionsVOUT

Device (V)TPS54352 1.2 TPS54353 1.5 TPS54354 1.8 TPS54355 2.5 TPS54356 3.3 TPS54357 5.0 TPS54350 Adj.


VINVBIAS

ENAPG

VSENSE

PGND

BOOT

LSG

PH

TPS543564.5 V to 20 V 3.3 V

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DC/DC Conversion

VOUTVIN

Optional

Optional

Optional

IN OUT

NRGNDEN

TPS736xx

Cap-Free 400-mA LDO

TPS736xx


Key Features• No output capacitor is required for stability• Ultra-low dropout voltage: 75 mV typ• Excellent load transient response—with or without optional

output capacitor• New NMOS topology delivers low reverse leakage current• Low noise: 30 µVRMS typ (10 Hz to 100 kHz)• 1% overall accuracy over line, load, and temperature• Less than 1 µA max IQ in shutdown mode• Thermal shutdown and current limit protection• Available in multiple output voltage versions

•• Fixed outputs of 1.5 V, 1.8 V, 2.5 V, 3.0 V, and 3.3 V•• Adjustable output from 1.20 V to 5.5 V•• Custom outputs available

• Packaging: Available in small SOT23-5 and thermally-enhancedSOT223-5

• Suggested resale price starts at $0.45 each in quantities of 1,000

Applications• Portable/battery-powered equipment• Post-regulation for switching supplies• Noise-sensitive circuitry such as VCOs• Point-of-load regulation for DSPs, FPGAs, ASICs and

microprocessors

Low Dropout Regulators (LDO) Device Output Current Packages Output Voltages (V) Price1

TPS731xx 150 mA SOT-23 1.5, 1.8, 2.5, 3.0, 3.3, 5.0, Adj 0.45TPS732xx 250 mA SOT-23, SOT-223 1.5, 1.8, 2.5, 3.0, 3.3, 5.0, Adj 0.65TPS736xx 400 mA SOT-23, SOT-223 1.5, 1.8, 2.5, 3.0, 3.3, Adj 0.85



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AM P L E

S


M O D U L E

A P PR E P O R T

800-mA Synchronous Step-Down

Converter

TPS62050


Key Features• 2.7-V to 10-V operating input voltage range• Up to 95% efficiency• Adjustable (0.7 V to 6.0 V) and fixed (1.5 V, 1.8 V, and 3.3 V)

output options• Synchronizable to external clock signal up to 1.2 MHz• –40 to 85° C operating temperature• Over temperature and over current protected• Packaging: Available in 10-pin MSOP• Suggested resale price starts at $1.85 each in quantities of 1,000

Applications• Distributed power and point-of-load regulation• Embedded computer systems• Servers• Networking equipment• Battery operated/portable systems

Synchronous Step-Down Converters Output Voltage OptionsOutput Voltage

Device (V)TPS62050DGS Adjustable 0.7 to 6 TPS62052DGS 1.5 TPS62054DGS 1.8 TPS62056DGS 3.3


1

8

6

7

3 10

9

5

4

2

VIN

EN

LBI

SYNC

SW

FB

PG

LBO

GND PGND

TPS62052C1 = 10 µF

C0 = 22 µF

VI = 3.3 V to 10 V VO = 1.5 V to 800 mAL1 = 10 µH

P

R O D U C T

S

AM P L E

S


M O D U L E

A P PR E P O R T

my.TI.com —more than a personalized home page.my.TI provides seamless access toyour customized content.

• Saved searches• E-mail updates on product changes • Organizes tools, software, and

products in folders just the way you like it

• Expands with your needs just bychanging preferences

Tools, information, organizationto get your product to market ...fast. To register, go to my.ti.com


DC/DC Conversion

VCC Boost Output

ControlOutput

PowerSupply

C3

R5

R3

R4

R1

R2

C2

C1

L1SW VOUT

FB

LBOPGND

VBAT

LBIEN

PS

GND

TPS61020

Synchronous Boost Converter

TPS6102x


Key Features• 0.9-V to 6.5-V operating input voltage range• Up to 500-mA, 5-V output at 3.3-V input• Up to 96% efficiency• Adjustable (1.8 V to 5.5 V) and fixed (3.0 V, 3.3 V, and 5.0 V) output

options• Low EMI converter• –40 to 85° C operating temperature• Over-temperature protection• Packaging: Available in 10-pin QFN• Suggested resale price starts at $1.40 each in quantities of 1,000

Applications• Distributed power and point-of-load regulation• Embedded computer systems• Servers• Networking equipment• Battery operated/portable systems

Synchronous Boost ConvertersOutput Voltage

Device (V)TPS61020DRC AdjustableTPS61024DRC 3.0TPS61025DRC 3.3TPS61027DRC 5.0


P

R O D U C T

S

AM P L E

S


M O D U L E

A P PR E P O R T


100-V, Second-Generation 802.3af and

Legacy Powered Device Controllers

TPS2375, TPS2376, TPS2377

Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/PARTnumber(Replace PARTnumber with TPS2375, TPS2376, or TPS2377)

Key Features• Fully supports IEEE 802.3af specification• Integrated 1-Ω, 100-V low-side switch• 15-kV system-level ESD capable• Supports use of low-cost silicon rectifiers • Programmable inrush current control• Fixed 450-mA current limit• Fixed and adjustable UVLO options• Open-drain power good reporting• Over-temperature protection• Industrial temperature range: –40° to 85° C• Packaging: Available in 8-pin TSSOP (PW) and 8-pin SOIC (D)• Suggested resale price starts at $1.25 each in quantities of 1,000

Applications• VoIP phones • Security terminals• WLAN APs • Building controls• Security cameras • Industrial automation• Network cameras • POS terminals

Power-over-Ethernet Powered Device (PD) Interface SwitchesProgrammable

Detection Classification Operating InrushDevice Support Support UVLO Temperature CurrentTPS2375 Yes Yes, Class 0 - 4 IEEE802.3af –40 to 85° C YesTPS2376 Yes Yes, Class 0 - 4 Adjustable –40 to 85° C YesTPS2377 Yes Yes, Class 0 - 4 Legacy –40 to 85° C Yes

Typical Application Circuit

RDET

SMA

J58A

RCLASS

RILIM TPS2375

CLASS

VSS

VDD

ILIMDET PG

RTN To D

C/D

C Co

nver

ter

V–

V+

3 61

2 5

4

8

P

R O D U C T

S

AM P L E

S


M O D U L E

A P PR E P O R T

Go to power.ti.com/poefor Power-over-Ethernet resources including power supply reference designs for IP phones, WLAN APs and security cameras

Power-over-Ethernet

Power-over-Ethernet Octal Power

Sourcing Equipment Power Managers

TPS2383A

Get samples, datasheets, and app reports at:www.ti.com/sc/device/TPS2383A

Key Features• Operates from a single +48-V supply • Two-point 25-kΩ resistor discovery • Power classification with bypass option • Capacitive detection for non-compliant legacy loads • Current management for charging bulk capacitance and EMI

reduction• Electronic circuit breaker • Input under-voltage lockout (UVLO) • Load over-current and under-current detection • 12-bit port current and voltage acquisition • Standard slave I2C serial interface • Dual color LED driver for port status • Packaging: Available in 64-pin LQFP• Suggested resale price starts at $7.35 each in quantities of 1,000

Applications• Networking switches• Mid-span injectors


1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

PoweredDevice

RX

TX

RX

TX

Powered DeviceRJ-45RJ-45Switch/Hub

MSP430Controller

48-VSupply

+

–

PPTC FuseTPS2383A

PSE(1 Port)

P

N

G

RSGND

V 48

RG

P

R O D U C T

S

AM P L E

S

D A T AS H E E T S

A P PR E P O R T

Positive High-Voltage Hot-Swap

Controllers

TPS2490, TPS2491

Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/TPS2490www.ti.com/sc/device/TPS2491

Key Features• Programmable power limiting and current limiting for complete

SOA protection• Wide operating range: +9 V to +80 V• Latched operation (TPS2490) and automatic retry (TPS2491)• High-side drive for low-RDS(on) external N-channel MOSFET• Programmable fault timer to protect the MOSFET and eliminate

nuisance shutdowns• Power Good open-drain output for downstream DC/DC coordination• Enable can be used as a programmable under-voltage lockout or

logic control• Packaging: Available in 10-pin MSOP• Suggested resale price starts at $1.70 each in quantities of 1,000

Applications• Server backplanes• Storage area network (SAN)• Medical systems• Plug-in modules• Base stations• 12-V, 24-V or 48-V backplane systems


EN

VCC SENSE

Controller

CT

R3

R4

R5 R6

VOUTVIN

PowerGood

Rs M1

R2

GND

R1Short

Pin

GATE OUT

PG

PROG TIMER GND

VREF

P

R O D U C T

S

AM P L E

S


M O D U L E

A P PR E P O R T


Hot-Swap Controllers

–48-V Redundant OR-ing Hot-Swap

Controller

TPS2350


Key Features• Replaces OR-ing diodes• Operating supply range of –12 V to –80 V• Withstands transients to –100 V• Programmable current limit• Programmable linear inrush slew rate• Programmable UV/OV thresholds• Programmable UV and OV hysteresis• Fault timer to eliminate nuisance trips• Power Good and fault outputs• Packaging: Available in 14-pin TSSOP and SOIC• Suggested resale price starts at $1.90 each in quantities of 1,000

Applications• –48-V distributed power systems• Central office switching• AdvancedTCA® –48-V power control• –48-V telecom power systems


GATA

GATB SOURCE

RTN

RTN

–48 V B–48 V A

48-V

Bac

kpla

ne

TPS2350

Plug-In Card

ISENSE

–VINB

–VINA

IN+ OUT+

ENIN– OUT–

PG

GATE

ILOAD

Hot SwapFET

ILOAD

RSENSE

CIN+

+

–

DC/DC

Replace OR-ing diodes with FETs to reduce power and heat dissipation

P

R O D U C T

S

AM P L E

S


M O D U L E

A P PR E P O R T

9/14/04 Portland

9/15/04 Seattle

9/16/04 Vancouver

9/17/04 Calgary

9/21/04 Toronto

9/22/04 Ottawa

9/23/04 Montreal

9/28/04 Huntsville

9/29/04 Atlanta

9/30/04 Raleigh

10/5/04 Tucson

10/6/04 Phoenix

10/7/04 San Diego

SEMINAR COST

$95 (U.S.) per person

Presentations, continental

breakfast, lunch and seminar

manual are included in the fee.

TI’s NEW Power Supply Seminar Series!


CHECK OUT power.ti.com/seminarsfor archived power seminar topics and on-line training!

Please note: Specific presenters will vary according to location. While all topics will be fully documented in the manual you receive at the seminar, time constraints may influence both the sequence and the specific topics to be discussed during the seminar. Please check the web site below for the latest information. Dates are subject to change.

To register for a seminar in North America or for additional seminar information, call:1-800-477-8924 ext. 1086or register via the Internet at:www.ti.com/powerseminars2004

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TI Worldwide Technical SupportInternetTI Semiconductor Product Information Center Home Pagesupport.ti.comTI Semiconductor KnowledgeBase Home Pagesupport.ti.com/sc/knowledgebase

Product Information CentersAmericasPhone +1(972) 644-5580 Fax +1(972) 927-6377Internet/Email support.ti.com/sc/pic/americas.htm

Europe, Middle East, and AfricaPhone

Belgium (English) +32 (0) 27 45 55 32 Italy 800 79 11 37Finland (English) +358 (0) 9 25173948 Netherlands (English) +31 (0) 546 87 95 45France +33 (0) 1 30 70 11 64 Spain +34 902 35 40 28Germany +49 (0) 8161 80 33 11 Sweden (English) +46 (0) 8587 555 22Israel (English) 1800 949 0107 United Kingdom +44 (0) 1604 66 33 99

Fax +(49) (0) 8161 80 2045Internet support.ti.com/sc/pic/euro.htm

JapanFax

International +81-3-3344-5317 Domestic 0120-81-0036Internet/Email

International support.ti.com/sc/pic/japan.htmDomestic www.tij.co.jp/pic

AsiaPhone

International +886-2-23786800Domestic Toll-Free Number Toll-Free Number

Australia 1-800-999-084 New Zealand 0800-446-934China 800-820-8682 Philippines 1-800-765-7404Hong Kong 800-96-5941 Singapore 800-886-1028Indonesia 001-803-8861-1006 Taiwan 0800-006800Korea 080-551-2804 Thailand 001-800-886-0010Malaysia 1-800-80-3973

Fax 886-2-2378-6808 Email [email protected] support.ti.com/sc/pic/asia.htm [email protected]

C111103

Important Notice: The products and services of Texas Instruments Incorporated and its subsidiariesdescribed herein are sold subject to TI’s standard terms and conditions of sale. Customers are advised toobtain the most current and complete information about TI products and services before placing orders. TIassumes no liability for applications assistance, customer’s applications or product designs, softwareperformance, or infringement of patents. The publication of information regarding any other company’sproducts or services does not constitute TI’s approval, warranty or endorsement thereof.

Safe Harbor Statement: This publication may contain forward-looking statements that involve a number ofrisks and uncertainties. These “forward-looking statements” are intended to qualify for the safe harbor fromliability established by the Private Securities Litigation Reform Act of 1995. These forward-looking statementsgenerally can be identified by phrases such as TI or its management “believes,” “expects,” “anticipates,”“foresees,” “forecasts,” “estimates” or other words or phrases of similar import. Similarly, such statementsherein that describe the company's products, business strategy, outlook, objectives, plans, intentions or goalsalso are forward-looking statements. All such forward-looking statements are subject to certain risks anduncertainties that could cause actual results to differ materially from those in forward-looking statements.Please refer to TI's most recent Form 10-K for more information on the risks and uncertainties that couldmaterially affect future results of operations. We disclaim any intention or obligation to update any forward-looking statements as a result of developments occurring after the date of this publication.

Trademarks in this issue: Real World Signal Processing, black/red banner, Code Composer Studio,PowerPAD, Predictive Gate Drive, SWIFT, TPS40K and TrueDrive are trademarks of Texas Instruments. All other trademarks are the property of their respective owners.

© 2004 Texas Instruments Incorporated

Printed in U.S.A. at The Jarvis Press, Inc., Dallas, TX, on recycled paper.

PRSRT STDU.S. POSTAGE

PAIDDALLAS, TEXAS

PERMIT NO. 2758

AN ANALOG AND

M I X E D - S I G N A L

PRODUCT CATALOG

System Power Managementthis issue:

3Q 2004 SLUM023

R E A L W O R L D S I G N A L P R O C E S S I N GTM

Learn More About TI’s Portable PowerManagement SolutionsFor more in-depth information on TI’sPortable Power Management Solutions,including:

• Battery Management

• DC/DC Conversion

• Special Functions• Resources Available

Download a copy of the latest PortablePower Management Sine On at:

www.ti.com/portablepowerguide

In North America, printed copies are available by calling:

1-800-477-8924, ext. 10233

For other regions, contact your local Product InformationCenter or return the enclosed business reply card.

Texas Instruments Incorporated14950 FAA Blvd.Ft. Worth, Texas 76155-9950

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