TPS40195 Status:ACTIVE

4.5V to 20V Buck Controller with Synchronization and Power Good

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Datasheet

4.5V TO 20V SYNCHRONOUS BUCK CONTROLLER WITH SYNCHRONIZATION AND POWER GOOD (Rev. B) (tps40195.pdf, 1105 KB)
27 Dec 2007 Download

	TPS40195
Topology	Buck
Vin(Min)(V)	4.5
Vin(Max)(V)	20
Vout(Min)(V)	0.591
Vout(Max)(V)	17
Regulated Outputs(#)	1
Iout(Max)(A)	20
Switching Frequency(Max)(kHz)	600
Iq(Typ)(mA)	4
Pin/Package	16QFN,16TSSOP
Rating	Catalog
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

TPS40200: Wide Input Nonsynchronous Buck DC/DC Controller
TPS40061: Wide Input (10V-55V) up to 1 MHz Frequency Synchronous Buck Controller, source/sink
TPS40055: Wide Input (8V-40V) up to 1MHz Frequency Synchronous Buck Controller, source/sink
TLV1117-33: Single Output LDO, 800mA, Fixed(3.3), Internal Current limit, Thermal Overload Protection

More Related Products

Product Information

Features

Input Operating Voltage Range: 4.5 V to 20 V
Output Voltage as Low as 0.591 V ±0.5%
180° Bi-Directional Out-of-Phase Synchronization
Internal 5-V Regulator
High and Low MOSFET Sense Overcurrent
100 kHz to 600 kHz Switching Frequency
Enable and Power Good
Programmable UVLO and Hysteresis
Thermal Shutdown at 150°C
Selectable Soft-Start
Pre-Bias Output Safe
APPLICATIONS
- Digital TV
- Entry-Level and Midrange Servers
- Networking Equipment
- Non-Isolated DC-DC modules

Description

The TPS40195 is a flexible synchronous buck controller that operates from a nominal 4.5 V to 20 V supply. This controller implements voltage mode control with the switching frequency adjustable from 100 kHz to 600 kHz. Flexible features found on this device include selectable soft-start time, programmable short circuit limit, programmable undervoltage lockout (UVLO) and synchronization capability. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs. Short-circuit detection is done by sensing the voltage drop across the low-side MOSFET when it is on, and comparing it with a user programmable threshold.

The threshold is set with a single external resistor connected from ILIM to GND. Pulse-by-pulse limiting (to prevent current runaway) is provided by sensing the voltage across the high-side MOSFET when it is on and terminating the cycle when the voltage drop rises above a fixed threshold of 550 mV. 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. Synchronization on this device is bi-directional. Devices can be synchronized 180° out of phase to a chosen master TPS40195 running at a fixed 250 kHz or 500 kHz, or can be synchronized to an outside clock source anywhere in the 100 kHz to 600 kHz range.

Pricing / Packaging / CAD Design Tools / Samples

			Price ($US)	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price ($US) \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
TPS40195PW	ACTIVE	-40 to 85	1.90 \| 100u	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
TPS40195PWG4	ACTIVE	-40 to 85	1.90 \| 100u	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
TPS40195PWR	ACTIVE	-40 to 85	1.90 \| 100u	TSSOP (PW) \| 16	View	2000 \| LARGE T&R
TPS40195PWRG4	ACTIVE	-40 to 85	1.90 \| 100u	TSSOP (PW) \| 16	View	2000 \| LARGE T&R
TPS40195RGYR	ACTIVE	-40 to 85	1.90 \| 100u	QFN (RGY) \| 16		3000 \| LARGE T&R
TPS40195RGYRG4	ACTIVE	-40 to 85	1.90 \| 100u	QFN (RGY) \| 16		3000 \| LARGE T&R
TPS40195RGYT	ACTIVE	-40 to 85	2.10 \| 100u	QFN (RGY) \| 16		250 \| SMALL T&R		Purchase Samples
TPS40195RGYTG4	ACTIVE	-40 to 85	2.10 \| 100u	QFN (RGY) \| 16		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
TPS40195PW	As of 7:50 AM GMT, 07 Sep 2008			As of 7:50 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	4140*	>10k \| 20 Oct	6 Weeks	Americas	Arrow	79
					Avnet	714
					Mouser Electronics	124
					Newark	180
TPS40195PWG4	As of 7:50 AM GMT, 07 Sep 2008			As of 7:50 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	4140*	>10k \| 20 Oct	6 Weeks	None Reported View Distributors
TPS40195PWR	As of 7:50 AM GMT, 07 Sep 2008			As of 7:50 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	>10k*	1644 \| 9 Sep	6 Weeks	Americas	DigiKey	682
		>10k \| 10 Oct			Mouser Electronics	>1k
					Newark	>1k
				Asia	WPI	>1k
				Europe	Arrow Northern Europe	>1k
TPS40195PWRG4	As of 7:50 AM GMT, 07 Sep 2008			As of 7:50 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	>10k*	1644 \| 9 Sep	6 Weeks	None Reported View Distributors
	>10k*	>10k \| 10 Oct	6 Weeks
TPS40195RGYR	As of 7:50 AM GMT, 07 Sep 2008			As of 7:50 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	6000*	>10k \| 6 Nov	6 Weeks	Americas	DigiKey	>1k
	6000*		6 Weeks	Asia	WPI	>1k
TPS40195RGYRG4	As of 7:50 AM GMT, 07 Sep 2008			As of 7:50 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	6000*	>10k \| 6 Nov	6 Weeks	None Reported View Distributors
TPS40195RGYT	As of 7:50 AM GMT, 07 Sep 2008			As of 7:50 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	7500*	>10k \| 6 Nov	6 Weeks	None Reported View Distributors
TPS40195RGYTG4	As of 7:50 AM GMT, 07 Sep 2008			As of 7:50 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	7500*	>10k \| 6 Nov	6 Weeks	None Reported View Distributors
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
TPS40195PW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS40195PWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS40195PWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS40195PWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS40195RGYR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS40195RGYRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS40195RGYT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS40195RGYTG4	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

4.5V TO 20V SYNCHRONOUS BUCK CONTROLLER WITH SYNCHRONIZATION AND POWER GOOD (Rev. B) (tps40195.pdf, 1105 KB)
27 Dec 2007 Download

Application Notes

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

User Guides

Using the TPS40195EVM (Rev. A) (sluu297a.htm, 8 KB)
10 Jul 2008 Abstract

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

More Literature

5V/12V Input DM6467 (x1) Power Ref Design Using a DC/DC Controller & Converter (slvr338.pdf, 131 KB)
30 Jun 2008 Download
5V/12V Input DM6467 (x2) Power Ref Design Using a DCDC Controller & Converter (slvr337.pdf, 158 KB)
30 Jun 2008 Download
TPS40195RGY Test Report (slul026.pdf, 145 KB)
15 Feb 2008 Download
TPS40195RGY Schematic (slur006.pdf, 57 KB)
15 Feb 2008 Download
TPS40195RGY Bill of Materials (slur005.pdf, 27 KB)
15 Feb 2008 Download

Reference Designs

Description	Part #	Company
High-Frequency Synchronous Buck Converter for Optimized Efficiency	PMP3080	Texas Instruments

Tools & Software

Name	Part #	Company	Tool / Software Type
TPS40195 Evaluation Module	TPS40195EVM-001	Texas Instruments	Development Boards/EVMs
TPS40K Loop Stability Tool (Rev. A)(slvc165a.zip, 204 KB ) 27 Jun 2008 zip

Alternative Products - Are similar to TPS40195
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Comments
TPS40200	Wide Input Nonsynchronous Buck DC/DC Controller	TI customers also evaluated this product.
TPS40061	Wide Input (10V-55V) up to 1 MHz Frequency Synchronous Buck Controller, source/sink	TI customers also evaluated this product.
TPS40055	Wide Input (8V-40V) up to 1MHz Frequency Synchronous Buck Controller, source/sink	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.

Complementary Products - Can be used with TPS40195
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
TLV1117-33	Single Output LDO, 800mA, Fixed(3.3), Internal Current limit, Thermal Overload Protection	LINEAR REGULATORS-STANDARD VOLTAGE REGULATORS	TI customers also evaluated this product.