Texas Instruments

UCC3895DWTR

DC DC Switching Controllers

Manufacturer
MPN
UCC3895DWTR
Package / Case
SOIC-20-300mil
Key Attributes
BiCMOS Advanced Phase-Shift PWM Controller

Technical Specifications

TypeDescription
Output Voltage5 V
Output Current0.1 A
Working Voltage V13.25 V
Switching Freq Hz500 kHz
Duty Cycle(Max)100%
Feedback SystemSecondary-Side Feedback
TypeDescription
Working ModePWM Modulation
Operating Temp0°C ~ +70°C
FeaturesAdjustable soft-start;Light load efficient mode;Slope compensation;Under-voltage lockout;Over Current Protection;Under Voltage Protection
TopologyFull-Bridge
Package / CaseSOIC-20-300mil

Product Introduction

The UCC3895 is a phase-shift PWM controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. The device allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part is used either as a voltage-mode or current-mode controller.

While the UCC3895 maintains the functionality of the UC3875/6/7/8 family and UC3879, it improves on that controller family with additional features such as enhanced control logic, adaptive delay set, and shutdown capability. Because the device is built using the BCDMOS process, it operates with dramatically less supply current than it’s bipolar counterparts. The UCC3895 operates with a maximum clock frequency of 1 MHz.

Features

  • Programmable-Output Turnon Delay
  • Adaptive Delay Set
  • Bidirectional Oscillator Synchronization
  • Voltage-Mode, Peak Current-Mode, or Average Current-Mode Control
  • Programmable Softstart, Softstop and Chip Disable via a Single Pin
  • 0% to 100% Duty-Cycle Control
  • 7-MHz Error Amplifier
  • Operation to 1 MHz
  • Typical 5-mA Operating Current at 500 kHz
  • Very Low 150-μA Current During UVLO

Applications

  • - Phase-Shifted Full-Bridge Converters - Off-Line, Telecom, Datacom and Servers - Distributed Power Architecture - High-Density Power Modules

Datasheet

📄 Open Download

Alternative Parts

Common UCC3895DWTR alternatives overseas buyers search for:

Compliance & Export Codes

TypeDetails
RoHSROHS3
ECCNEAR99
CNHTS8542399000
USHTS8542390001
TARIC8542399000
TypeDetails
CAHTS8542390000
BRHTS85423999
INHTS85423900
MXHTS8542.39.99

Sourcing Information

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