SCBS809G December   2005  – September 2017 UCC2895-EP

PRODUCTION DATA.  

  1. 1Features
  2. 2Description
  3. 3Revision History
  4. 4Pin Configuration and Functions
  5. 5Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  6. 6Application and Implementation
    1. 6.1 Programming DELAB, DELCD, and Adaptive Delay Set (ADS)
    2. 6.2 Circuit Description
  7. 7Device and Documentation Support
    1. 7.1 Receiving Notification of Documentation Updates
    2. 7.2 Community Resources
    3. 7.3 Trademarks
    4. 7.4 Electrostatic Discharge Caution
    5. 7.5 Glossary
  8. 8Mechanical, Packaging, and Orderable Information

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机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

1 Features

  • Programmable Output Turnon Delay
  • Adaptive Delay Set
  • Bidirectional Oscillator Synchronization
  • Capability for Voltage-Mode or Current-Mode Control
  • Programmable Soft Start/Soft Stop and Chip Disable Via a Single Pin
  • 0% to 100% Duty-Cycle Control
  • 7-MHz Error Amplifier
  • Operation to 1 MHz
  • Low-Active Current Consumption (5-mA Typ at 500 kHz)
  • Very-Low-Current Consumption During Undervoltage Lockout (150-μA Typ)
  • Supports Defense, Aerospace, and Medical Applications:
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Available in Military (–55°C to 125°C) Temperature Range
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability

2 Description

The UCC2895-EP is a phase-shift pulse-width modulation (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. It allows constant frequency PWM in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The device can be used either as a voltage-mode or current-mode controller.

While the UCC2895-EP maintains the functionality of the UC2875/6/7/8 family, it improves on that controller family with additional features, such as enhanced control logic, adaptive delay set, and shutdown capability. Since the device is built in BCDMOS, it operates with dramatically less supply current than its bipolar counterparts. The UCC2895-EP can operate with a maximum clock frequency of 1 MHz.

The M-temp UCC2895-EP device is offered in the 20-pin SOIC (DW) package.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
UCC2895-EP SOIC (20) 7.50 mm × 12.80 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Application Diagram

UCC2895-EP app_diagram_cbs809.gif

3 Revision History

Changes from F Revision (October 2009) to G Revision

  • Added Device Information table, ESD Ratings table, Thermal Information table, Application and Implementation section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information sectionGo
  • Changed RAMP sink current MIN from 12 mA : to 10 mAGo
  • Changed VOL MAX from 270 mV : to 330 mVGo