TPS23753PWR ,IEEE 802.3-2005 PoE Interface and Isolated Converter and Controller 14-TSSOP -40 to 125features a bootstrap startup• Security Camerasmechanism with an internal, switched current source.T ..
TPS23753PWRG4 ,IEEE 802.3-2005 PoE Interface and Isolated Converter and Controller 14-TSSOP -40 to 125maximum ratings may cause permanent damage to the device. These are stress ratingsonly, and functio ..
TPS23754PWP ,High Power/High Efficiency PoE Interface and DC/DC Controller 20-HTSSOP -40 to 125 SLVS885I–OCTOBER 2008–REVISED DECEMBER 20175 Pin Configuration and FunctionsPWP Package20-Pin HTSS ..
TPS23754PWP-1 ,IEEE 802.3at PoE Interface and Isolated Converter Controller 20-HTSSOP -40 to 125 SLVS885I–OCTOBER 2008–REVISED DECEMBER 20175 Pin Configuration and FunctionsPWP Package20-Pin HTSS ..
TPS23756PWP ,High Power/High Efficiency PoE Interface and DC/DC Controller 20-HTSSOP -40 to 125 SLVS885I–OCTOBER 2008–REVISED DECEMBER 20175 Pin Configuration and FunctionsPWP Package20-Pin HTSS ..
TPS23756PWPR ,High Power/High Efficiency PoE Interface and DC/DC Controller 20-HTSSOP -40 to 125features internal soft start,bootstrap start-up source, current-mode2 Applicationscompensation, and ..
TS83C51RC2-MCB , High Performance 8-bit Microcontroller
TS83C51RC2-MCB , High Performance 8-bit Microcontroller
TS83C51RC2-MCB , High Performance 8-bit Microcontroller
TS861AI ,RAIL TO RAIL MICROPOWER BICMOS COMPARATORSTS861TS862TS864RAIL TO RAILMICROPOWER BICMOS COMPARATORS ■ ULTRA LOW CURRENT CONSUMPTION PIN CONNE ..
TS861AIDT ,RAIL TO RAIL MICROPOWER BICMOS COMPARATORSELECTRICAL CHARACTERISTICSV = +2.7VCCT = 25°C (unless otherwise specified) ambSymbol Parameter ..
TS861AILT ,RAIL TO RAIL MICROPOWER BICMOS COMPARATORSELECTRICAL CHARACTERISTICSV = +5VCCT = 25°C (unless otherwise specified) ambSymbol Parameter M ..
TPS23753PW-TPS23753PWR-TPS23753PWRG4
IEEE 802.3-2005 PoE Interface and Isolated Converter and Controller
OUTDVCGATE
CTLINOUTCTLCTLDENFRSBTLV431
APD
BR1 Adapter interface and RBLNKare Optional
TPS23753
www.ti.com SLVS853C –JUNE 2008–REVISED JANUARY 2010
IEEE 802.3 PoE INTERFACE AND ISOLATED CONVERTER CONTROLLER
Checkfor Samples: TPS23753
1FEATURES
DESCRIPTION• Optimized for Isolated Converters Complete PoE Interface The TPS23753isa combined Power over Ethernet
(PoE) powered device (PD) interface and
• Adapter ORing Support current-mode dc/dc controller optimized specifically
• 12V Adapter Support for isolated converter designs. The PoE
Programmable Frequency with Synch. implementation supports the IEEE 802.3at standarda 13 W, type1 PD. The requirements foran IEEE
• Robust 100V, 0.7Ω Hotswap MOSFET 802.3at type1 device area superset of IEEE
• Small TSSOP14 Package 802.3-2008 (originally 802.3af) requirements.
• 15 kV/8 kV System Level ESD Capable The TPS23753 supportsa numberof input-voltage
• –40°Cto 125°C Junction Temperature Range ORing options including highest voltage, external
Design Procedure Application Note- SLVA305 adapter preference, and PoE preference.
Adapter ORing Application Note- SLVA306 The PoE interface features an external detection
signature pin that can also be usedto disable the
APPLICATIONS internal hotswap MOSFET. This allows the PoE
function to be turned off. Classification can be
• IEEE 802.3at Compliant Powered Devicesprogrammedto anyof the defined types witha single
• VoIP Telephones resistor.
• Access PointsThe dc/dc controller featuresa bootstrap startup
• Security Cameras mechanism with an internal, switched current source.
This provides the advantagesof cycling overload fault
protection without the constant power lossofa pullup
resistor.
The programmable oscillator may be synchronizedto higher-frequency external timing reference.
1. Basic TPS23753 Implementation
