TPS23770 Status:ACTIVE

IEEE 802.3af PD Controller with Integrated DC/DC

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Datasheet

Integrated 100-V IEEE 802.3af PD and DC/DC Controller (Rev. B) (tps23770.pdf, 1336 KB)
07 Feb 2008 Download

	TPS23750	TPS23753	TPS23770
Pin/Package	20HTSSOP	14TSSOP	20HTSSOP
UVLO	802.3af	Legacy	Legacy
Operating Temp Range(Celsius)	-40 to 85	-40 to 125	-40 to 85
Error Amplifier	Yes	No	Yes
Buck Support	Yes	No	Yes
Synchronizable	No	Yes	No
Current Slope Compensation	No	Yes	No
ORing Priority	No	Adapter, PSE	No
Auxiliary Power Rails Supported	24V-57V	12V-57V	24V-57V
PD Power Level	Type 1 / 13W	Type 1 / 13W	Type 1 / 13W
Switching Frequency	Programmable	Programmable	Programmable
Duty Cycle(%)	50	80	50
Approx. Price (US$)	1.90 \| 100u	1.85 \| 100u	1.90 \| 100u
	Samples	Samples	Samples
	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

TPS23750: IEEE 802.3af PD Controller with Integrated DC/DC
TPS2375: IEEE 802.3af PoE Powered Device Controllers
TPS2376-H: IEEE 802.3af PoE HIGH POWER PD CONTROLLER
BQ24103: Standalone Synchronous Switch-mode Li-Ion Charger w/2A FET in QFN-20, 1- or 2-cell
TPS2384: Quad Ethernet Power Sourcing Equipment Power Manager
PTB48540C: 12 V, 10-W Power-Over-Ethernet Power Module

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Product Information

Features

Complete 802.3af PoE Interface
- Features derived from the TPS2375
- 100 V, 0.6 Internal Pass MOSFET
- Standard and Legacy UVLO Choices
- Fixed 140 mA Inrush Limit
Primary Side DC/DC Converter Control
- Minimum External Component Count
- Current Mode Control
- Isolated and Non-Isolated Topologies
- Programmable Operating Frequency
- Current Sense Leading-edge Blanking
- 50% Duty Cycle Limiting
- Voltage Output Error Amplifier
Internal PoE and Converter Sequencing
Industry-Standard 20 Lead Package
Industrial Temperature Range, -40°C to 85°C
APPLICATIONS
- All PoE PD Devices Including:
  - Wireless Access Points
  - VoIP Phones
  - Security Cameras

PowerPAD is a trademark of Texas Instruments.

Description

The TPS23750 integrates the functionality of the TPS2375 with a primary side dc/dc PWM controller. The designer can create a front-end solution for PoE-PD applications with minimum external components. The TPS23770 is identical to the TPS23750 with the exception of the undervoltage lockout turn-on voltage, which is compatible with legacy systems.

The PoE front end has all the necessary IEEE 802.3af functions including detection, classification, undervoltage lockout and inrush control. The PoE input switch is integrated within the TPS23750.

The dc/dc controller section is designed to support flyback, forward, and nonsynchronous low-side switch buck topologies.

The external switching MOSFET and current sense resistor provide flexibility in topology, power level, and current limit. The full-featured dc/dc controller includes programmable soft start, hiccup type fault limiting, 50% maximum duty cycle, programmable constant switching frequency, and a true voltage-output error amplifier. Additional protection features provide for robust designs.

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	Samples
TPS23770PWP	ACTIVE	-40 to 85	1.90 \| 100u	HTSSOP (PWP) \| 20	View	70 \| TUBE	Purchase Samples
TPS23770PWPG4	ACTIVE	-40 to 85	1.90 \| 100u	HTSSOP (PWP) \| 20	View	70 \| TUBE	Purchase Samples
TPS23770PWPR	ACTIVE	-40 to 85	1.90 \| 100u	HTSSOP (PWP) \| 20	View	2000 \| LARGE T&R
TPS23770PWPRG4	ACTIVE	-40 to 85	1.90 \| 100u	HTSSOP (PWP) \| 20	View	2000 \| LARGE T&R

* 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
TPS23770PWP	As of 7:52 AM GMT, 07 Sep 2008			As of 7:52 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	2144 \| 24 Nov	6 Weeks	None Reported View Distributors
	0*	>10k \| 9 Dec	6 Weeks
TPS23770PWPG4	As of 7:52 AM GMT, 07 Sep 2008			As of 7:52 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	2144 \| 24 Nov	6 Weeks	None Reported View Distributors
	0*	>10k \| 9 Dec	6 Weeks
TPS23770PWPR	As of 7:52 AM GMT, 07 Sep 2008			As of 7:52 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	2000 \| 17 Nov	8 Weeks	Americas	DigiKey	>1k
		166 \| 24 Nov
		>10k \| 9 Dec
TPS23770PWPRG4	As of 7:52 AM GMT, 07 Sep 2008			As of 7:52 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	2000 \| 17 Nov	8 Weeks	None Reported View Distributors
		166 \| 24 Nov
		>10k \| 9 Dec
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
TPS23770PWP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS23770PWPG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS23770PWPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS23770PWPRG4	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

Integrated 100-V IEEE 802.3af PD and DC/DC Controller (Rev. B) (tps23770.pdf, 1336 KB)
07 Feb 2008 Download

Application Notes

Designing an EMI Compliant PoE with Isolated Flyback (slua469.htm, 8 KB)
20 May 2008 Abstract
Practical Guidelines EMI Compliant PoE (slua454.htm, 8 KB)
27 Mar 2008 Abstract

View Application Notes for Powered Devices

Tools & Software

Name	Part #	Company	Tool / Software Type
TPS23750 Evaluation Module Buck	TPS23750EVM-107	Texas Instruments	Development Boards/EVMs
TPS23750 Evaluation Module Flyback	TPS23750EVM-108	Texas Instruments	Development Boards/EVMs

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Customers Who Evaluated This Product Also Evaluated...
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TPS2376-H	IEEE 802.3af PoE HIGH POWER PD CONTROLLER	TI customers also evaluated this product.
TPS2377	IEEE 802.3af PoE Powered Device Controllers	TI customers also evaluated this product.

Complementary Products - Can be used with TPS23770
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