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UCC3895PWG4 Datasheet(PDF) 1 Page - Texas Instruments |
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UCC3895PWG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 28 page 1 10 11 12 13 14 15 16 17 18 19 7 7 7 7 7 7 7 7 7 20 2 3 4 5 6 7 8 9 UCC3895 EAN EAP EAOUT RAMP REF GND SYNC CT RT DELAB DELCD ADS CS OUTD OUTC VCC PGND OUTB OUTA SS/DISB Q1 D B A C VIN VOUT VBIAS UCC1895, UCC2895, UCC3895 www.ti.com SLUS157P – DECEMBER 1999 – REVISED JUNE 2013 BiCMOS Advanced Phase-Shift PWM Controller Check for Samples: UCC1895, UCC2895, UCC3895 1 FEATURES DESCRIPTION The UCC3895 is a phase-shift PWM controller that • Programmable-Output Turnon Delay implements control of a full-bridge power stage by • Adaptive Delay Set phase shifting the switching of one half-bridge with • Bidirectional Oscillator Synchronization respect to the other. The device allows constant frequency pulse-width modulation in conjunction with • Voltage-Mode, Peak Current-Mode, or Average resonant zero-voltage switching to provide high Current-Mode Control efficiency at high frequencies. The part is used either • Programmable Softstart, Softstop and Chip as a voltage-mode or current-mode controller. Disable via a Single Pin While the UCC3895 maintains the functionality of the • 0% to 100% Duty-Cycle Control UC3875/6/7/8 family and UC3879, it improves on that • 7-MHz Error Amplifier controller family with additional features such as enhanced control logic, adaptive delay set, and • Operation to 1 MHz shutdown capability. Because the device is built using • Typical 5-mA Operating Current at 500 kHz the BCDMOS process, it operates with dramatically • Very Low 150- μA Current During UVLO less supply current than it’s bipolar counterparts. The UCC3895 operates with a maximum clock frequency APPLICATIONS of 1 MHz. • Phase-Shifted Full-Bridge Converters • Off-Line, Telecom, Datacom and Servers • Distributed Power Architecture • High-Density Power Modules 1 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 © 1999–2013, 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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