UCC3895 Status:ACTIVE

BiCMOS Advanced Phase Shift PWM Controller

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Datasheet

BiCMOS Advanced Phase Shift PWM Controller (Rev. L) (ucc3895.pdf, 669 KB)
09 Apr 2008 Download

	UCC1895	UCC2895	UCC3895
Topology	Full-Bridge	Full-Bridge	Boost, Buck, Full-Bridge
Control Method	Current Mode, Voltage	Current Mode, Voltage	Current Mode, Voltage
Duty Cycle(Max)(%)	100	100	100
PWM Outputs(#)	4	4	4
Frequency(Max)(kHz)	1000	1000	1000
UVLO Thresholds On/Off(V)	11/9	11/9	11/9
Pin/Package	20CDIP,20LCCC	20PDIP,20PLCC,20SOIC,20TSSOP	20PDIP,20PLCC,20SOIC,20TSSOP
	Samples	Samples	Samples
	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

UCC28600: 8-Pin Quasi Resonant Flyback Green Mode Controller
UC3843A: Current Mode PWM Controller
UC3875: Phase Shift Resonant Controller
UCC28060: Natural Interleaved Dual-Phase Transition-Mode PFC Controller
TPS73601: Single Output LDO, 400mA, Adj.(1.2 to 5.5V), Cap free, Low Noise, Reverse Current Protection
TPS54610: Low Input Voltage 6A Synchronous Buck Converter with Adjustable Output Voltage

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Product Information

Features

Programmable Output Turn-on Delay
Adaptive Delay Set
Bidirectional Oscillator Synchronization
Voltage-Mode, Peak Current-Mode, or Average Current-Mode Control
Programmable Softstart/Softstop and Chip Disable via a Single Pin
0% to 100% Duty-Cycle Control
7-MHz Error Amplifier
Operation to 1 MHz
Typical 5-mA Operating Current at 500 kHz
Very Low 150-µA Current During UVLO
APPLICATIONS
- Phase-Shifted Full-Bridge Converters
- Off-Line, Telecom, Datacom and Servers
- Distributed Power Architecture
- High-Density Power Modules

Description

The UCC3895 is a phase-shift PWM controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. It allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part can be used either as a voltage-mode or current-mode controller.

While the UCC3895 maintains the functionality of the UC3875/6/7/8 family and UC3879, it improves on that controller family with additional features such as enhanced control logic, adaptive delay set, and shutdown capability. Since it is built using the BCDMOS process, it operates with dramatically less supply current than it�s bipolar counterparts. The UCC3895 can operate with a maximum clock frequency of 1 MHz.

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
UCC3895DW	ACTIVE	0 to 70	5.40 \| 100u	SOIC (DW) \| 20	View	25 \| TUBE
UCC3895DWG4	ACTIVE	0 to 70	5.40 \| 100u	SOIC (DW) \| 20	View	25 \| TUBE
UCC3895DWTR	ACTIVE	0 to 70	5.55 \| 100u	SOIC (DW) \| 20	View	2000 \| LARGE T&R	Purchase Samples
UCC3895DWTRG4	ACTIVE	0 to 70	5.55 \| 100u	SOIC (DW) \| 20	View	2000 \| LARGE T&R	Purchase Samples
UCC3895N	ACTIVE	0 to 70	5.40 \| 100u	PDIP (N) \| 20	View	20 \| TUBE
UCC3895NG4	ACTIVE	0 to 70	5.40 \| 100u	PDIP (N) \| 20	View	20 \| TUBE
UCC3895PW	ACTIVE	0 to 70	5.45 \| 100u	TSSOP (PW) \| 20	View	70 \| TUBE
UCC3895PWG4	ACTIVE	0 to 70	5.45 \| 100u	TSSOP (PW) \| 20	View	70 \| TUBE
UCC3895PWTR	ACTIVE	0 to 70	5.60 \| 100u	TSSOP (PW) \| 20	View	2000 \| LARGE T&R	Purchase Samples
UCC3895PWTRG4	ACTIVE	0 to 70	5.60 \| 100u	TSSOP (PW) \| 20	View	2000 \| LARGE T&R	Purchase Samples
UCC3895Q	ACTIVE	0 to 70	5.40 \| 100u	PLCC (FN) \| 20	View	46 \| TUBE
UCC3895QG3	ACTIVE	0 to 70	5.40 \| 100u	PLCC (FN) \| 20	View	46 \| TUBE

* 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
UCC3895DW	As of 7:39 AM GMT, 20 Aug 2008			As of 7:39 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	1892 \| 17 Sep	4 Weeks	Americas	Arrow	304
		871 \| 22 Sep			DigiKey	928
		625 \| 24 Sep			Mouser Electronics	252
		>10k \| 29 Sep			Newark	25
				Asia	WPI	54
				Europe	Arrow Southern Europe	147
					Farnell	156
					Spoerle	625
UCC3895DWG4	As of 7:39 AM GMT, 20 Aug 2008			As of 7:39 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	1892 \| 17 Sep	4 Weeks	Americas	Mouser Electronics	63
		871 \| 22 Sep		Americas	Rochester Electronics	5
		625 \| 24 Sep
		>10k \| 29 Sep
UCC3895DWTR	As of 7:39 AM GMT, 20 Aug 2008			As of 7:39 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	5065 \| 22 Sep	8 Weeks	None Reported View Distributors
	0*	>10k \| 29 Sep	8 Weeks
UCC3895DWTRG4	As of 7:39 AM GMT, 20 Aug 2008			As of 7:39 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	5065 \| 22 Sep	8 Weeks	Americas	Avnet	>1k
	0*	>10k \| 29 Sep	8 Weeks	Asia	WPI	>1k
UCC3895N	As of 7:39 AM GMT, 20 Aug 2008			As of 7:39 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	>10k*	>10k \| 5 Sep	6 Weeks	Americas	Arrow	267
					DigiKey	>1k
					Mouser Electronics	35
					Newark	73
					Rochester Electronics	>1k
				Asia	WPI	55
				Europe	Avnet-SILICA	17
					Farnell	133
					Spoerle	180
UCC3895NG4	As of 7:39 AM GMT, 20 Aug 2008			As of 7:39 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	>10k*	>10k \| 5 Sep	6 Weeks	Europe	Abacus Polar	40
	>10k*		6 Weeks	Europe	EBV Elektronik	10
UCC3895PW	As of 7:39 AM GMT, 20 Aug 2008			As of 7:39 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	1260*	>10k \| 6 Oct	6 Weeks	Americas	DigiKey	9
					Mouser Electronics	8
					Rochester Electronics	>1k
				Asia	WPI	110
				Europe	Avnet-SILICA	140
UCC3895PWG4	As of 7:39 AM GMT, 20 Aug 2008			As of 7:39 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	1260*	>10k \| 6 Oct	6 Weeks	None Reported View Distributors
UCC3895PWTR	As of 7:39 AM GMT, 20 Aug 2008			As of 7:39 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 29 Sep	6 Weeks	None Reported View Distributors
UCC3895PWTRG4	As of 7:39 AM GMT, 20 Aug 2008			As of 7:39 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 29 Sep	6 Weeks	None Reported View Distributors
UCC3895Q	As of 7:39 AM GMT, 20 Aug 2008			As of 7:39 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	1518*	>10k \| 14 Oct	6 Weeks	Americas	DigiKey	144
	1518*		6 Weeks	Americas	Mouser Electronics	30
UCC3895QG3	As of 7:39 AM GMT, 20 Aug 2008			As of 7:39 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	1518*	>10k \| 14 Oct	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
UCC3895DW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC3895DWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC3895DWTR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC3895DWTRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC3895N	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	View	View
UCC3895NG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	View	View
UCC3895PW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC3895PWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC3895PWTR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC3895PWTRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC3895Q	Green (RoHS & no Sb/Br)	CU SN	Level-2-260C-1 YEAR	View	View
UCC3895QG3	Green (RoHS & no Sb/Br)	CU SN	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

BiCMOS Advanced Phase Shift PWM Controller (Rev. L) (ucc3895.pdf, 669 KB)
09 Apr 2008 Download

Application Notes

Current Doubler Rectifier Offers Ripple Current Cancellation (slua323.htm, 8 KB)
21 Sep 2004 Abstract
Synchronous Rectifiers of a Current Doubler (slua287.htm, 8 KB)
27 Feb 2003 Abstract
UCC3895 CD Output Asymmetric Duty Cycle Operation (slua275.htm, 8 KB)
21 Aug 2002 Abstract
A Power Management Solution for Efficient, Multiple Output Applications (slua255.htm, 8 KB)
04 Oct 2001 Abstract
A Comparison Between the BiCMOS UCC3895 Phase Shift Controller and the UC3875 (slua246.htm, 8 KB)
22 Feb 2001 Abstract
DN-63 The Current-Doubler Rectifier: An Alternative Rectification Technique (slua121.htm, 9 KB)
12 Jan 2001 Abstract
U-136A Phase Shifted, Zero Voltage Transition Design Considerations (slua107.htm, 9 KB)
05 Sep 1999 Abstract

View Application Notes for PWM Power Supply Controllers

User Guides

UCC3895EVM-001 Configuring The UCC3895 For Direct Control Driven Synchronous Re (Rev. A) (sluu109a.htm, 9 KB)
10 Jan 2002 Abstract
UCC3895 Advanced Phase Controller Evaluation Board (Rev. A) (sluu069a.pdf, 163 KB)
18 Oct 2000 Download

View User Guides for PWM Power Supply Controllers

Reference Designs

Description	Part #	Company
BiCMOS Advanced Phase Shift PWM Controller	UCC3895REF	Texas Instruments

Tools & Software

Name	Part #	Company	Tool / Software Type
UCC3895 Evaluation Module	UCC3895EVM-001	Texas Instruments	Development Boards/EVMs

Alternative Products - Are similar to UCC3895
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Comments
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UC3875	Phase Shift Resonant Controller	TI customers also evaluated this product.
UC3879	Phase Shift Resonant Controller	TI customers also evaluated this product.

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