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UCC28631 Datasheet(PDF) 1 Page - Texas Instruments |
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UCC28631 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 85 page SD GND VSENSE CS HV VDD DRV UCC28630 1 2 3 4 8 6 5 EMC Filter t o VAC VOUT 18 18.5 19 19.5 20 20.5 21 0 10 20 30 40 50 60 70 Output Power (W) +5% Limit 115V/60 Hz 230V/50 Hz ±5% Limit C001 “ 1% Typical Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. 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 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) 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 output voltage for regulation, and for low-loss input voltage sensing. Advanced sampling techniques allow CCM operation, and deliver excellent output voltage regulation performance for opto-coupler-less designs at power levels of 100 W and above. A high-voltage current source enables fast and efficient start-up. Advanced light-load modes are deployed to reduce both controller and system power consumption at no load and light load. These modes enable potential system designs to meet 30-mW no- load power for power designs up to 30 W nominal, 60 W peak. The device has been designed for ease-of-use and incorporates many features to enable a wide range of designs. Extensive protection features are included to simplify system design. See the Device Comparison Table for details. Device Information PART NUMBER PACKAGE BODY SIZE UCC28630 SOIC (7) 4.90 mm x 3.90 mm UCC28631 UCC28632 UCC28633 UCC28634 (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Schematic Typical Application Measured Regulation |
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