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UCC28630

Texas Instruments
Part Number UCC28630
Manufacturer Texas Instruments
Description High-Power Flyback Controller
Published Dec 26, 2019
Detailed Description Product Folder Order Now Technical Documents Tools & Software Support & Community UCC28630, UCC28631 UCC28632, UCC2...
Datasheet PDF File UCC28630 PDF File

UCC28630
UCC28630

Overview
Product Folder Order Now Technical Documents Tools & Software Support & Community UCC28630, UCC28631 UCC28632, UCC28633, UCC28634 SLUSBW3D – MARCH 2014 – REVISED DECEMBER 2017 UCC2863x, High-Power Flyback Controller with Primary-Side Regulation and Peak-Power Mode 1 Features •1 High-Power, Primary-Side CV/CC Regulation • Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) Operation • Built-In 700-V Start-Up Current Source • Active X-Capacitor Discharge (UCC28630 and UCC28633) • Adjustable Constant-Current (CC) Mode Limiting (except for UCC28630) • High Gate Drive Current 1-A Source and 2-A Sink • Low Power Modes for <30-mW System Standby • Best-In-Class Light Load (10%) Efficiency >85% • PSR design with no opto-coupler - can meet high CM isolation & surge requirements • VDD OVP for independent indirect output OV under open-feedback fault conditions • Peak-Power Mode for Transient Overload • Shutdown Pin Interface for External NTC • Protections: Overvoltage, Overcurrent, Over- Temperature, Overload Timer (UCC28630), AC Line UV, Brownout and Pin Protections • Frequency Dither to Ease EMI Compliance (except the UCC28632) • Create a Custom Design Using the UCC2863x With the WEBENCH® Power Designer 2 Applications • AC-DC Adapters for Notebook, Game Consoles, Printers • Open Frame SMPS for Industrial, Printer, White Goods, LCD Monitors • Energy Efficient AC-DC Supplies for Nominal Power 10-W to 65-W, (with up to 200% transient peak power) Simplified Schematic VAC EMC Filter VOUT 1 VSENSE HV 8 2 SD to UCC28630 3 CS VDD 6 4 GND DRV 5 3 Description The UCC2863x targets high-power, primary-side regulated flyback converters.
The ability to operate in both CCM and DCM make the device suitable for applications with a wide power range.
The peak power mode allows transient peak power delivery up to 200% of nominal rating, with only a 25% peak current increase, maximizing transformer utilization.
The transformer bias winding is used to sense o...


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