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UCC2895-W Datasheet(PDF) 1 Page - Texas Instruments

Part No. UCC2895-W
Description  BiCMOS Advanced Phase-Shift PWM Controller
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

UCC2895-W Datasheet(HTML) 1 Page - Texas Instruments

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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
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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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