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UCC28250 Datasheet

Part Number UCC28250
Manufacturers Texas Instruments
Logo Texas Instruments
Description PWM Controller
Datasheet UCC28250 DatasheetUCC28250 Datasheet (PDF)

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design UCC28250 SLUSA29D – APRIL 2010 – REVISED AUGUST 2015 UCC28250 Advanced PWM Controller With Prebias Operation 1 Features •1 Prebiased Start-up • Synchronous Rectifier Control Outputs With Programmable Delays (Including Zero Delay Support) • Voltage Mode Control With Input Voltage FeedForward or Current Mode Control • Primary or Secondary-Side Control • 3.3-V, 1.5% Accurate Reference Output • .

  UCC28250   UCC28250






Part Number UCC28251
Manufacturers Texas Instruments
Logo Texas Instruments
Description PWM Controller
Datasheet UCC28250 DatasheetUCC28251 Datasheet (PDF)

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UCC28251 SLUSBD8E – FEBRUARY 2013 – REVISED DECEMBER 2014 UCC28251 Advanced PWM Controller With Prebias Operation 1 Features •1 Prebiased Startup • Synchronous Rectifier Control Outputs with Programmable Delays (Including Zero Delay Support) • Voltage Mode Control with Input Voltage FeedForward or Current Mode Control • Primary or Secondary-Side Control • 3.3-V, 1.5% Accurate Reference Output • Lower Minim.

  UCC28250   UCC28250







PWM Controller

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design UCC28250 SLUSA29D – APRIL 2010 – REVISED AUGUST 2015 UCC28250 Advanced PWM Controller With Prebias Operation 1 Features •1 Prebiased Start-up • Synchronous Rectifier Control Outputs With Programmable Delays (Including Zero Delay Support) • Voltage Mode Control With Input Voltage FeedForward or Current Mode Control • Primary or Secondary-Side Control • 3.3-V, 1.5% Accurate Reference Output • 1-MHz Capable Switching Frequency • 1% Accurate Cycle-by-Cycle Overcurrent Protection with Matched Duty Cycle Outputs • Programmable Soft-Start and Hiccup Restart Timer • Thermally Enhanced 4-mm × 4-mm QFN-20 Package and 20-pin TSSOP Package 2 Applications • Half-Bridge, Full-Bridge, Interleaved Forward, and Push-Pull Isolated Converters • Telecom and Data-com Power • Wireless Base Station Power • Server Power • Industrial Power Systems 3 Description The UCC28250 PWM controller is designed for high power density applications that may have stringent prebiased start-up requirements. The integrated synchronous rectifier control outputs target highefficiency and high-performance topologies such as half-bridge, full-bridge, interleaved forward, and pushpull. The UCC27200 half-bridge drivers and UCC2732X MOSFET drivers used in conjunction with the UCC28250 provide a complete power converter solution. Externally programmable soft-start, used in conjunction with an internal prebiased start-up.


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