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UC2879DWTR Scheda tecnica(PDF) 1 Page - Texas Instruments |
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UC2879DWTR Scheda tecnica(HTML) 1 Page - Texas Instruments |
1 / 15 page www.ti.com FEATURES DESCRIPTION BLOCK DIAGRAM UC1879 UC2879 UC3879 SLUS230B – JUNE 1998 – REVISED JUNE 2007 PHASE SHIFT RESONANT CONTROLLER • Programmable Output Turn On Delay; Zero The UC3879 controls a bridge power stage by phase Delay Available shifting the switching of one half-bridge with respect to the other. This allows constant frequency pulse • Compatible with Voltage Mode or Current width modulation in combination with resonant, Mode Topologies zero-voltage switching for high efficiency • Practical Operation at Switching Frequencies performance. The UC3879 can be configured to to 300 kHz provide control in either voltage mode or current • 10-MHz Error Amplifier mode operation, with overcurrent shutdown for fast fault protection. • Pin Programmable Undervoltage Lockout Independently programmable time delays provide • Low Startup Current – 150 µA dead-time at the turn-on of each output stage, • Soft Start Control allowing time for each resonant switching interval. • Outputs Active Low During UVLO Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 1998–2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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