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TRANSCRIPT
An Analog Product Catalog
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
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
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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
Typical Application Diagram
OUT1 OUT2
UCC3808A
VFB
AUXOUT1
MAINOUTPUT
14
18
4
G2
G1
SYNCHIN
UCC2540
Q2Q1
C1INPUT
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AM P L E
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D A T AS H E E T S EVALUATION
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A P PR E P O R T
Texas Instruments 3Q 2004 System Power Management Sine On 3
Power Supply Control
LineMonitor
FB CS
AUX
OUT
VIN
VIN VOUT
UCC2891/7
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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
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
Typical Application Diagram
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
Typical Application Diagram
PFC PWM
IAC
CSI
GT1
VERR
VSNS
CS2
GT2
UCC28510 to UCC28517
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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
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A P PR E P O R T
4 System Power Management Sine On Texas Instruments 3Q 2004
Power Supply Control
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
Typical Application Diagram
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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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
Typical Application Diagram
UCC3817
ISENSE
GTDRV
VFB
VOUTRectified AC Line
IAC/VFF
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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
Texas Instruments 3Q 2004 System Power Management Sine On 5
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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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
Typical Application Diagram
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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D A T AS H E E T S EVALUATION
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A P PR E P O R T
TPS40K™/SWIFT™ SOFTWARE TOOL
6 System Power Management Sine On Texas Instruments 3Q 2004
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
Typical Application Diagram
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
TPS40K™/SWIFT™ SOFTWARE TOOL
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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
Typical Block Diagram
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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TPS40K™/SWIFT™ SOFTWARE TOOL
Texas Instruments 3Q 2004 System Power Management Sine On 7
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
Typical Application Diagram
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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High Frequency, 2-, 3-, or 4-Channel
Multiphase DC/DC Controller
TPS40090
Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/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
Typical Application Diagram
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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D A T AS H E E T S EVALUATION
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A P PR E P O R T
8 System Power Management Sine On Texas Instruments 3Q 2004
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.
Typical Application Diagram
3-V to 6-VInput
CompensationNetwork
OutputVIN
VBIASVSENSE
AGND
PGND
BOOT
PH
COMP
TPS54110
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TPS40K™/SWIFT™ SOFTWARE TOOL
General-Purpose, Dual-Channel
Synchronous Buck DC/DC Controller
TPS5124
Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/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
Typical Application Diagram
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
P
R O D U C T
S
AM P L E
S
D A T AS H E E T S EVALUATION
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A P PR E P O R T
Texas Instruments 3Q 2004 System Power Management Sine On 9
DC/DC Conversion
Low-Voltage, 3-A 700-kHz Step-Down
Converter for Sequencing
TPS54380
Get samples, datasheets, app reports, EVMs and software tool at:www.ti.com/sc/device/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
1Suggested resale price in U.S. dollars in quantities of 1,000.
Typical Application Diagram
Input
1.8-VCore Supply
VIN
VBIAS
TRACKIN
PH
BOOT
PGND
VSENSECOMPAGND
I/O Supply
TPS54380
3.3 V
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TPS40K™/SWIFT™ SOFTWARE TOOL
4.5-V to 20-V Input, 3-A Step-Down
Converter in TSSOP-16
TPS5435x
Get samples, datasheets, app reports, EVMs and software tool at:www.ti.com/sc/device/TPS54350
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.
Typical Application Diagram
VINVBIAS
ENAPG
VSENSE
PGND
BOOT
LSG
PH
TPS543564.5 V to 20 V 3.3 V
P
R O D U C T
S
AM P L E
S
D A T AS H E E T S EVALUATION
M O D U L E
A P PR E P O R T
TPS40K™/SWIFT™ SOFTWARE TOOL
10 System Power Management Sine On Texas Instruments 3Q 2004
DC/DC Conversion
VOUTVIN
Optional
Optional
Optional
IN OUT
NRGNDEN
TPS736xx
Cap-Free 400-mA LDO
TPS736xx
Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/TPS73601
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
1Suggested resale price in U.S. dollars in quantities of 1,000.
Typical Application Diagram
P
R O D U C T
S
AM P L E
S
D A T AS H E E T S EVALUATION
M O D U L E
A P PR E P O R T
800-mA Synchronous Step-Down
Converter
TPS62050
Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/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
Typical Application Diagram
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
D A T AS H E E T S EVALUATION
M O D U L E
A P PR E P O R T
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Texas Instruments 3Q 2004 System Power Management Sine On 11
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
Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/TPS61020
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
Typical Application Diagram
P
R O D U C T
S
AM P L E
S
D A T AS H E E T S EVALUATION
M O D U L E
A P PR E P O R T
12 System Power Management Sine On Texas Instruments 3Q 2004
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
D A T AS H E E T S EVALUATION
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
Typical Block Diagram
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
Typical Application Diagram
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
D A T AS H E E T S EVALUATION
M O D U L E
A P PR E P O R T
Texas Instruments 3Q 2004 System Power Management Sine On 13
Hot-Swap Controllers
–48-V Redundant OR-ing Hot-Swap
Controller
TPS2350
Get samples, datasheets, app reports and EVMs at:www.ti.com/sc/device/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
Typical Application Diagram
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
D A T AS H E E T S EVALUATION
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!
14 System Power Management Sine On Texas Instruments 3Q 2004
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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Texas Instruments 3Q 2004 System Power Management Sine On 15
TI Worldwide Technical SupportInternetTI Semiconductor Product Information Center Home Pagesupport.ti.comTI Semiconductor KnowledgeBase Home Pagesupport.ti.com/sc/knowledgebase
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C111103
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© 2004 Texas Instruments Incorporated
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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.
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