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BB、TI、全系列接受订货、提供样品申请.供应UCC2895DWTR BiCMOS相移PWM控制器 BiCMOS相移PWM控制器 BiCMOS相移PWM控制器 BiCMOS相移PWM控制器

BiCMOS Advanced Phase-Shift PWM Controller

Check for Samples: UCC1895, UCC2895, UCC3895

1FEATURES 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

• Voltage-Mode, Peak Current-Mode, or Average frequency pulse-width modulation in conjunction with

Current-Mode Control resonant zero-voltage switching to provide high

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

• Operation to 1 MHz enhanced control logic, adaptive delay set, and

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

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