Texas Instruments UCC28950PW
Part Number:
- UCC28950PW
Manufacturer:
- Texas Instruments
Ventron No:
- 3752001-UCC28950PW
Description:
- Green phase-shifted full-bridge controller with Synchronous Rectification control
Datasheet:
- UCC28950PW
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Part Overview
Description
The UCC28950 is an enhanced phase-shifted controller that offers advanced control of full-bridge converters and active control of synchronous rectifier output stages. It features programmable delays for ZVS operation, dynamic synchronous rectifier on/off control, and adaptive delay. The controller supports average or peak current mode control, voltage mode control, and naturally handles pre-biased startup with DCM mode.
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/off control with programmable threshold
Programmable adaptive delay
Average or peak current mode control with programmable slope compensation and voltage mode control
Naturally handles pre-biased startup with DCM mode
Closed loop soft start and enable function
Programmable switching frequency up to 1MHz with bi-directional synchronization
( /-3%) cycle-by-cycle current limit protection with hiccup mode support
150-μA start-up current
Voo under voltage lockout
Wide temperature range (-40°C to 125°C)
Applications
Phase-shifted full-bridge converters
Server power supplies
Datacom, telecom, and wireless base-station power
Industrial power systems
High-density power architectures
Solar inverters
Electric vehicles
The UCC28950 is an enhanced phase-shifted controller that offers advanced control of full-bridge converters and active control of synchronous rectifier output stages. It features programmable delays for ZVS operation, dynamic synchronous rectifier on/off control, and adaptive delay. The controller supports average or peak current mode control, voltage mode control, and naturally handles pre-biased startup with DCM mode.
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/off control with programmable threshold
Programmable adaptive delay
Average or peak current mode control with programmable slope compensation and voltage mode control
Naturally handles pre-biased startup with DCM mode
Closed loop soft start and enable function
Programmable switching frequency up to 1MHz with bi-directional synchronization
( /-3%) cycle-by-cycle current limit protection with hiccup mode support
150-μA start-up current
Voo under voltage lockout
Wide temperature range (-40°C to 125°C)
Applications
Phase-shifted full-bridge converters
Server power supplies
Datacom, telecom, and wireless base-station power
Industrial power systems
High-density power architectures
Solar inverters
Electric vehicles
Specifications
Texas Instruments UCC28950PW technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments UCC28950PW.
- Factory Lead Time6 Weeks
- Lifecycle StatusACTIVE (Last Updated: 3 days ago)
- Mounting TypeSurface Mount
- Package / Case24-TSSOP (0.173, 4.40mm Width)
- Surface MountYES
- Number of Pins24
- Operating Temperature-40°C~125°C TJ
- PackagingTube
- JESD-609 Codee4
- Pbfree Codeyes
- Part StatusActive
- Moisture Sensitivity Level (MSL)1 (Unlimited)
- Number of Terminations24
- ECCN CodeEAR99
- Terminal FinishNickel/Palladium/Gold (Ni/Pd/Au)
- Additional FeatureALSO OPERATES IN CURRENT MODE AND AVERAGE CURRENT MODE AND PWM CONTROL TECHNIQUE ALSO POSSIBLE
- SubcategorySwitching Regulator or Controllers
- TechnologyBICMOS
- Terminal PositionDUAL
- Terminal FormGULL WING
- Peak Reflow Temperature (Cel)260
- Frequency1MHz
- Base Part NumberUCC28950
- FunctionStep-Up/Step-Down
- Number of Outputs6
- Output Voltage5V
- Output TypeTransistor Driver
- Operating Supply Voltage12V
- Input Voltage-Nom12V
- Analog IC - Other TypeSWITCHING CONTROLLER
- Output ConfigurationPositive
- Output Current20mA
- Voltage - Supply (Vcc/Vdd)8V~17V
- Max Supply Current10mA
- Output Power1.12W
- Control FeaturesDead Time Control, Enable, Frequency Control, Soft Start
- TopologyFull-Bridge
- Control ModeVOLTAGE-MODE
- Frequency - Switching50kHz~1MHz
- Control TechniquePHASE-SHIFT CONTROL
- Synchronous RectifierYes
- Nominal Input Voltage3.6V
- Switcher ConfigurationPHASE-SHIFT
- Max Duty Cycle97 %
- Duty Cycle (Max)95%
- Output Phases1
- Height1.2mm
- Length7.8mm
- Width4.4mm
- Thickness1mm
- Radiation HardeningNo
- REACH SVHCNo SVHC
- RoHS StatusROHS3 Compliant
- Lead FreeLead Free
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