TPS40190 Status: ACTIVE

Low Pin Count Synchronous Buck DC/DC Controller

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Datasheet

LOW PIN COUNT SYNCHRONOUS BUCK CONTROLLER (Rev. A) (tps40190.pdf, 711 KB)
02 Aug 2005 Download

	TPS40190
Topology	Buck
Vin(Min)(V)	4.5
Vin(Max)(V)	15
Vout(Min)(V)	0.6
Vout(Max)(V)	12.75
Regulated Outputs(#)	1
Iout(Max)(A)	20
Switching Frequency(Max)(kHz)	300
Iq(Typ)(mA)	2.5
Pin/Package	10SON
Rating	Catalog
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

TPS51117: Wide Vin Synchronous Buck Controller Optimized for Light Load Efficiency
TPS40200: Wide Input Nonsynchronous Buck DC/DC Controller
TPS40192: 4.5V to 18V Input, Low Pin Count, Synchronous Buck Controller with Power Good
BQ24080: Low-Cost 1-cell Li-Ion Charger w/ 1-A FET, AC Present and Charge Enable in QFN-10
TPS54550: 4.5 to 20V Input, 6A Step Down Converter with Adjustable Output Voltage
UCC28600: 8-Pin Quasi Resonant Flyback Green Mode Controller

More Related Products

Product Information

Features

Input Operating Voltage Range: 4.5 V to 15 V
Reference 0.591 V ±1%
Voltage Mode Control
Internal 5-V Regulator For Internal Housekeeping, Driver Power and Light External Loads
Selectable Short-Circuit Protection Thresholds
Pre-Bias Ouput Safe
Fixed Switching Frequency of 300 kHz
Internal Soft-Start
Small 3 mm × 3 mm, 10-Pin SON Package
Bootstrapped Drivers for N-Channel MOSFET
Adaptive Anti-Cross Conduction
Internal Bootstrap Diode
1.2-A Drivers for Decreased Switching Loss
APPLICATIONS
- Cable modem CPE
- Digital Set Top Box
- Graphics/Audio Cards
- Entry-level and Mid-Range Servers

Description

The TPS40190 is a cost-optimized synchronous buck controller that operates from 4.5 V to 15 V nominally, and implements a fixed frequency voltage mode power supply. The controller uses an adaptive anti-cross conduction scheme to prevent both the high-side and the rectifier MOSFET to be turned on at the same time, preventing shoot through current in the two MOSFETs.

The controller also provides a short circuit protection threshold that is user selectable between one of three values. The protection level is set with a single external resistor connected from COMP to GND. During start-up, the impedance connected to COMP is sensed, and the information is decoded to select one of the three thresholds. When the controller senses an output short circuit, both MOSFETs are turned off and a timeout period is observed before attempting to restart. This provides limited power dissipation in the event of a sustained fault.

The TPS40190 provides strong drivers to minimize switching losses in the power stage, reducing heat build up in the MOSFETs and allowing larger MOSFETs to be used without undue switching time penalty.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools	Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Samples
TPS40190DRCR	ACTIVE	-40 to 85	1.25 \| 100u	SON (DRC) \| 10	View	3000 \| LARGE T&R
TPS40190DRCRG4	ACTIVE	-40 to 85	1.25 \| 100u	SON (DRC) \| 10	View	3000 \| LARGE T&R
TPS40190DRCT	ACTIVE	-40 to 85	1.40 \| 100u	SON (DRC) \| 10	View	250 \| SMALL T&R	Purchase Samples
TPS40190DRCTG4	ACTIVE	-40 to 85	1.40 \| 100u	SON (DRC) \| 10	View	250 \| SMALL 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
TPS40190DRCR	As of 8:07 AM GMT, 15 Oct 2008			As of 8:07 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	1257 \| 10 Feb	6 Weeks	Americas	Avnet	>1k
		>10k \| 13 Feb			DigiKey	>1k
					Mouser Electronics	384
					Newark	>1k
					Rochester Electronics	>1k
				Asia	WPI	777
TPS40190DRCRG4	As of 8:07 AM GMT, 15 Oct 2008			As of 8:07 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	1257 \| 10 Feb	6 Weeks	None Reported View Distributors
	0*	>10k \| 13 Feb	6 Weeks
TPS40190DRCT	As of 8:07 AM GMT, 15 Oct 2008			As of 8:07 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	4679*	>10k \| 14 Jan	6 Weeks	Americas	Arrow	250
					Avnet	250
					Mouser Electronics	114
					Newark	250
TPS40190DRCTG4	As of 8:07 AM GMT, 15 Oct 2008			As of 8:07 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	4679*	>10k \| 14 Jan	6 Weeks	Americas	Mouser Electronics	250
View all Distributors

* 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
TPS40190DRCR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS40190DRCRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS40190DRCT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS40190DRCTG4	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

LOW PIN COUNT SYNCHRONOUS BUCK CONTROLLER (Rev. A) (tps40190.pdf, 711 KB)
02 Aug 2005 Download

Application Notes

View Application Notes for DC/DC Controllers (External Switch)

User Guides

Using the TPS40190 (sluu232.pdf, 167 KB)
16 Sep 2005 Download

View User Guides for DC/DC Controllers (External Switch)

Simulation Models

Spice Model
- TPS40190 TINA-TI Average and Transient Models (Rev. A) (slvc180a.zip, 289 KB)
  24 Sep 2008 zip
PSpice Model
- TPS40190 PSpice Average and Transient Models (Rev. A) (slvc179a.zip, 182 KB)
  24 Sep 2008 zip

More Literature

5V/12V input DM6467 (x1) Power Reference Design (slvr336.pdf, 1689 KB)
24 Jun 2008 Download
5V/12V input DM6467 (x2) Power Reference Design (slvr335.pdf, 1686 KB)
24 Jun 2008 Download
TPS40190DRC Test Report (slul025.pdf, 498 KB)
15 Feb 2008 Download
TPS40190DR Schematic (slur004.pdf, 64 KB)
15 Feb 2008 Download
TPS40190DRC Bill of Materials (slur003.pdf, 28 KB)
15 Feb 2008 Download
Power Management Solutions for Xilinx and Altera FPGAs (slym065.pdf, 1970 KB)
30 Jan 2007 Download
FPGA Power Reference Designs (sbvr003.pdf, 121 KB)
22 Jan 2007 Download
Reference Design Cookbook 2 - Power Management (slub012.pdf, 3733 KB)
27 Feb 2006 Download
2003 Power Seminar - Under the Hood of Low-Voltage DC/DC Converters (slup206.pdf, 420 KB)
14 Jul 2003 Download

Reference Designs

Description	Part #	Company
6-A Synchronous Buck Converter with Minimal External Components	PMP2942	Texas Instruments

Tools & Software

*Required

Design Now with SwitcherPro™

Enter your design parameters below to design now with SwitcherPro™

Input
		Min	Max
*	Vin Min:	4.5 V	15 V
*	Vin Max:	4.5 V	15 V

Output
		Min	Max
*	Vout:	0.6 V	12.75 V
*	Iout Max:	0.0 A	20 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
12V Input, 1.5V Output, 10A Sync Buck Converter Evaluation Module	TPS40190EVM-001	Texas Instruments	Development Boards/EVMs
SwitcherPro(TM) Online Design Creator and Management Software	SWITCHERPRO	Texas Instruments	Application Software
TPS40K -DC/DC Controller Products Designer Software	TPS40K-SW	Texas Instruments	Application Software
TPS40K Loop Stability Tool (Rev. A)(slvc165a.zip, 204 KB ) 27 Jun 2008 zip

Alternative Products - Are similar to TPS40190
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Comments
TPS51117	Wide Vin Synchronous Buck Controller Optimized for Light Load Efficiency	TI customers also evaluated this product.
TPS40200	Wide Input Nonsynchronous Buck DC/DC Controller	TI customers also evaluated this product.
TPS40192	4.5V to 18V Input, Low Pin Count, Synchronous Buck Controller with Power Good	TI customers also evaluated this product.
TPS40041	Low Pin Count, Low Vin Synchronous Buck DC/DC Controller	TI customers also evaluated this product.

Complementary Products - Can be used with TPS40190
Customers Who Evaluated This Product Also Evaluated...
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