4.5 to 20V Input, 6A Step Down Converter with Adjustable Output Voltage - TPS54550

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Features	Samples	Technical Documents
Quality & Pb-Free Data	Pricing/Packaging	Application Notes
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Tools & Software	Symbols/Footprints	Reference Designs

Datasheet

	4.5-V to 20-V Input 6-A Output Synchronous PWM Switcher w/Integrated FET (SWIFT) (Rev. A) (tps54550.pdf, 1053 KB) 04 Apr 2006 Download

SWIFT Converter Product Portfolio (Rev. B) (slvt153b.pdf, 77 KB) 23 Apr 2008 Download

	TPS54550
Iout(Max)(A)	6
Vin(Min)(V)	4.5
Vin(Max)(V)	20
Vout(Min)(V)	0.9
Vout(Max)(V)	12
Iq(Typ)(mA)	9
Switching Frequency(Max)(kHz)	700
Switch Current Limit(Typ)(A)	7.5
Topology	Buck
Operating Temp Range(Celsius)	-40 to 125
Pin/Package	16HTSSOP
Rating	Catalog
Duty Cycle(Max)(%)	80
	Samples
	Inventory

Product Information

Features

40 m MOSFET Switch for High Efficiency at 6-A (7.5 Peak) Output Current
Uses External Lowside MOSFET
Output Voltage Adjustable Down to 0.891 V With 1% Accuracy
Synchronizes to External Clock
180° Out of Phase Synchronization
Wide PWM Frequency— Fixed 250 kHz, 500 kHz or Adjustable 250 kHz to 700 kHz
Adjustable Slow Start
Adjustable Undervoltage Lockout
Load Protected by Peak Current Limit and Thermal Shutdown
16-Pin TSSOP PowerPAD™ Package
SWIFT Documentation Application Notes, and Design Software: www.ti.com/swift
APPLICATIONS
- Industrial and Commercial Low Power Systems
- LCD Monitors and TVs
- Computer Peripherals
- Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors

SWIFT, PowerPAD are trademarks of Texas Instruments.

Description

The TPS54550 is a medium output current synchronous buck PWM converter with an integrated high side MOSFET and a gate driver for an low side external MOSFET. Features include a high performance voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter inductors and capacitors. The TPS54550 has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4.5 V; a slow-start circuit to limit in-rush currents; and a power good output to indicate valid output conditions. The synchronization feature is configurable as either an input or an output for easy 180° out of phase synchronization.

The TPS54550 device is available in a thermally enhanced 16-pin TSSOP (PWP) PowerPAD™ package. TI provides evaluation modules and the SWIFT™ Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

These Alternative Products:

TPS54610: Low Input Voltage 6A Synchrono...
TPS5430: 5.5V to 36V Input, 3-A Step Do...
TPS54350: 4.5 to 20V Input, 3A Step Down...
More Alternative Products

These Complementary Products:

TPS73601: Single Output LDO, 400mA, Adj....
UCC28060: Natural Interleaved Dual-Phase...
TPS2051B: Single, Current-Limited, Power...
More Complementary Products

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Pricing/Packaging/CAD Design Tools/Samples
			Price	Packaging			CAD Design Tools	Samples
Device	Status	Temp (^oC)	Budget Price ($US) \| QTY	Industry Standard (TI Pkg) \| Pins	Top Side Marking	Standard Pack Quantity \| Package Carrier	Symbols	Samples
TPS54550PWP	ACTIVE	-40 to 125	3.55 \| 100u	HTSSOP (PWP) \| 16	View	90 \| TUBE	Request Free Samples
TPS54550PWPG4	ACTIVE	-40 to 125	3.55 \| 100u	HTSSOP (PWP) \| 16	View	90 \| TUBE	Request Free Samples
TPS54550PWPR	ACTIVE	-40 to 125	3.55 \| 100u	HTSSOP (PWP) \| 16	View	2000 \| LARGE T&R	Purchase Samples
TPS54550PWPRG4	ACTIVE	-40 to 125	3.55 \| 100u	HTSSOP (PWP) \| 16	View	2000 \| LARGE T&R	Purchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory
	TI Inventory Status			Reported Distributor Inventory
TPS54550PWP	As of 7:52 AM GMT, 20 Jul 2008			As of 7:52 AM GMT, 20 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	>10k*	537 \| 21 Jul	6 Weeks	Americas	Arrow	80
		360 \| 12 Aug			Avnet	130
		>10k \| 25 Aug			DigiKey	>1k
					Mouser Electronics	>1k
					Newark	76
				Europe	Avnet-SILICA	42
				Europe	Spoerle	270
TPS54550PWPG4	As of 7:52 AM GMT, 20 Jul 2008			As of 7:52 AM GMT, 20 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	>10k*	537 \| 21 Jul	6 Weeks	Americas	Avnet	90
		360 \| 12 Aug		Americas	Mouser Electronics	495
		>10k \| 25 Aug		Europe	EBV Elektronik	270
TPS54550PWPR	As of 7:52 AM GMT, 20 Jul 2008			As of 7:52 AM GMT, 20 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	3685 \| 19 Aug	8 Weeks	Americas	Avnet	>1k
		4315 \| 22 Aug
		>10k \| 25 Aug
TPS54550PWPRG4	As of 7:52 AM GMT, 20 Jul 2008			As of 7:52 AM GMT, 20 Jul 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	3685 \| 19 Aug	8 Weeks	Americas	Rochester Electronics	>1k
		4315 \| 22 Aug		Asia	WPI	>1k
		>10k \| 25 Aug

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data
	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
TPS54550PWP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS54550PWPG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS54550PWPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS54550PWPRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Datasheets

4.5-V to 20-V Input 6-A Output Synchronous PWM Switcher w/Integrated FET (SWIFT) (Rev. A) (tps54550.pdf, 1053 KB)
04 Apr 2006 Download

SWIFT Converter Product Portfolio (Rev. B) (slvt153b.pdf, 77 KB)
23 Apr 2008 Download

Application Notes

View Application Notes for Step-Down Regulators

User Guides

TPS54550EVM-158 Swift(TM) Regulator EVM (slvu151.htm, 8 KB)
29 Mar 2006 Abstract

More Literature

12Vin Power Design using Integrated-FET DCDC Converters and a LDO (slvr329.pdf, 931 KB)
26 Mar 2008 Download

12Vin Power Design using Integrated-FET DCDC Converters and LDO's (slvr327.pdf, 1160 KB)
26 Mar 2008 Download

TPS54550PWP Test Report (slul032.pdf, 711 KB)
15 Feb 2008 Download

TPS54550PWP Schematic (slur018.pdf, 52 KB)
15 Feb 2008 Download

TPS54550PWP Bill of Materials (slur017.pdf, 26 KB)
15 Feb 2008 Download

Power Management Solutions for Xilinx and Altera FPGAs (slym065.pdf, 1970 KB)
30 Jan 2007 Download

Reference Designs

Description	Part #	Company
Synchronous Buck Controller Doubles as a 2-A Buck Boost Inverter	PMP2933	Texas Instruments

Tools & Software

*Required

View RoHS Compliant Devices

TPS54550, Status:ACTIVE
4.5 to 20V Input, 6A Step Down Converter with Adjustable Output Voltage

Enter your design parameters below to design now with SwitcherPro™

Input
		Min	Max
*	Vin Min:	4.5 V	20 V
*	Vin Max:	4.5 V	20 V

Output
		Min	Max
*	Vout:	0.9 V	12 V
*	Iout Max:	0.0 A	6 A

Search for more Power Management devices with Power Quick Search on power.ti.com
To learn more about SwitcherPro™ visit www.ti.com/switcherpro

Name	Part #	Company	Tool / Software Type
6-17Vin, 5A Synchronous Buck Converter Module	TPS54550EVM-158	Texas Instruments	Development Boards/EVMs
SwitcherPro(TM) Beta Online Design Creator and Management Software	SWITCHERPRO	Texas Instruments	Application Software
SWIFT Designer Software Tool	SWIFT-SW	Texas Instruments	Application Software

Related Products

Alternative Products - Are similar to TPS54550
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Comments
TPS54610	Low Input Voltage 6A Synchronous Buck Converter with Adjustable Output Voltage	TI customers also evaluated this product.
TPS5430	5.5V to 36V Input, 3-A Step Down Converter	TI customers also evaluated this product.
TPS54350	4.5 to 20V Input, 3A Step Down Converter with Adjustable Output Voltage	TI customers also evaluated this product.
TPS5450	5A, Wide Input Step Down SWIFT Converter	TI customers also evaluated this product.
TPS5431	5.5-V to 23-V, 3-A Step-Down Swift(TM) Converter	TI customers also evaluated this product.
TPS5420	5.5-V to 36-V, 2-A Step-Down SWIFT(tm) Converter	TI customers also evaluated this product.

Complementary Products - Can be used with TPS54550
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
TPS73601	Single Output LDO, 400mA, Adj.(1.2 to 5.5V), Cap free, Low Noise, Reverse Current Protection	LINEAR REGULATORS-SINGLE CHANNEL LDO	TI customers also evaluated this product.
UCC28060	Natural Interleaved Dual-Phase Transition-Mode PFC Controller	AC/DC AND DC/DC POWER SUPPLIES-POWER FACTOR CORRECTION ICS	TI customers also evaluated this product.
TPS2051B	Single, Current-Limited, Power-Distribution Switch	PCMCIA AND USB-USB POWER SWITCHES	TI customers also evaluated this product.
TPS76801	Single Output LDO, 1.0A, Adj.(1.5 to 5.5V), Low Quiescent Current, Fast Transient Response	LINEAR REGULATORS-SINGLE CHANNEL LDO	TI customers also evaluated this product.
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TPS767D318	Dual-Output Low-Dropout (LDO) Voltage Regulators	LINEAR REGULATORS-DUAL CHANNEL LDO	TI customers also evaluated this product.
UCC3895	BiCMOS Advanced Phase Shift PWM Controller	AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS	TI customers also evaluated this product.
BQ24061	Linear 1-Cell Li-Ion Charger w/Thermal Regulation, 6.5V OVP, Charge Enable	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
TPS61041	28-V, 250-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications	LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS	TI customers also evaluated this product.
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