UCC28950PWR ,Green Phase-Shifted Full-Bridge Controller with Synchronous Rectification 24-TSSOP -40 to 125features including cycle-by-cycle currentDDlimit, UVLO and thermal shutdown. A 90-degree• Wide Temp ..
UCC2895DW ,BiCMOS Advanced Phase Shift Resonant ControllerTHERMAL CHARACTERISTICSPART T T UNITJA JCUCC2895DW 90 25UCC2895N 80 35UCC2895PW 125 14°C/WUCC2895Q ..
UCC2895DWG4 ,BiCMOS Advanced Phase Shift Resonant Controller 20-SOIC -40 to 85This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated cir ..
UCC2895DWTR ,BiCMOS Advanced Phase Shift Resonant ControllerMAXIMUM RATINGS(1)All voltage values are with respect to the network ground terminal unless otherwi ..
UCC2895DWTRG4 ,BiCMOS Advanced Phase Shift Resonant Controller 20-SOIC -40 to 85FEATURES DESCRIPTIONThe UCC3895 is a phase-shift PWM controller that• Programmable-Output Turnon De ..
UCC2895N ,BiCMOS Advanced Phase Shift Resonant ControllerMAXIMUM RATINGS(1)All voltage values are with respect to the network ground terminal unless otherwi ..
UPA1763G-E1 ,N-channel enhancement type power MOS FET(Dual type)FEATURES3 : Source 2• Dual chip type4 : Gate 25, 6 : Drain 2• Low on-resistanceRDS(on)1 = 47.0 mΩ M ..
UPA1763G-E2 ,N-channel enhancement type power MOS FET(Dual type)DATA SHEETMOS FIELD EFFECT TRANSISTORµ PA1763SWITCHINGDUAL N-CHANNEL POWER MOS FETINDUSTRIAL USEDE ..
UPA1764 ,SWITCHING DUAL N-CHANNEL POWER MOS FET INDUSTRIAL USEFEATURES4 : Gate 25, 6 : Drain 2• Dual chip type• Low On-state Resistance6.0 ±0.3RDS(on)1 = 27 mΩ ( ..
UPA1764G ,SWITCHING DUAL N-CHANNEL POWER MOS FET INDUSTRIAL USE DATA SHEETMOS FIELD EFFECT TRANSISTORPA1764μ μ μ μ SWITCHINGDUAL N-CHANNEL POWER ..
UPA1770 ,SWITCHING DUAL P-CHANNEL POWER MOS FET INDUSTRIAL USEELECTRICAL CHARACTERISTICS (TA = 25 °C, All terminals are connected.)
UCC28950PWR
Green Phase-Shifted Full-Bridge Controller with Synchronous Rectification
UCC28950
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VDD
GND
CVDD
VBIAS
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UCC28950SLUSA16D –MARCH 2010–REVISED NOVEMBER 2016
UCC28950 Green Phase-Shifted Full-Bridge Controller With Synchronous Rectification Features Enhanced Wide Range Resonant Zero Voltage
Switching (ZVS) Capability Direct Synchronous Rectifier (SR) Control Light-Load Efficiency Management Including Burst Mode Operation Discontinuous Conduction Mode (DCM),
Dynamic SR On and Off Control with
Programmable Threshold Programmable Adaptive Delay Averageor Peak Current Mode Control With
Programmable Slope Compensation and Voltage
Mode Control Naturally Handles Pre-Biased Start Up With DCM
Mode Closed Loop Soft Start and Enable Function Programmable Switching Frequencyupto1 MHz
with Bi-Directional Synchronization (±3%) Cycle-by-Cycle Current Limit Protection
With Hiccup Mode Support 150-µA Start-Up Current VDD Undervoltage Lockout Wide Temperature Range –40°Cto +125°C
Applications Phase-Shifted Full-Bridge Converters Datacom, Telecom, and Wireless Base-Station
Power Server, Power Supplies Industrial Power Systems High-Density Power Architectures Solar Inverters, and Electric Vehicles
DescriptionThe UCC28950 enhanced phase-shifted controller
builds upon Texas Instrument’s industry standard
UCx895 phase-shifted controller family with
enhancements that offer bestin class efficiencyin
today’s high performance power systems. The
UCC28950 implements advanced controlof the full-
bridge along with active controlof the synchronous
rectifier output stage.
The primary-side signals allow programmable delays ensure ZVS operation over wide-load current and
input voltage range, while the load current naturally
tunes the secondary-side synchronous rectifiers
switching delays, maximizing overall system
efficiency.
The UCC28950 also offers multiple light-load
management features including burst mode and
dynamic SR on/off control when transitioningin and
outof Discontinuous Current Mode (DCM) operation,
ensuring ZVS operationis extended downto much
lighter loads. addition, the UCC28950 includes support for
current or voltage mode control. Programmable
switching frequency upto1 MHz anda wide setof
protection features including cycle-by-cycle current
limit, UVLO and thermal shutdown.A 90-degree
phase-shifted interleaved synchronized operation can easily arranged between two converters.
The UCC28950is availablein TSSOP-24 package.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe datasheet.
UCC28950 Typical Application
