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UCC2895-EP Datasheet Preview

UCC2895-EP Datasheet

Phase-Shift PWM Controller

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UCC2895-EP
SCBS809G – DECEMBER 2005 – REVISED SEPTEMBER 2017
UCC2895-EP BiCMOS Advanced Phase-Shift PWM Controller
1 Features
1 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
UCC3895
1 EAN
EAP 270
2 EAOUT SS/DISB 19
3 RAMP
OUTA 18
4 REF
OUTB 17
5 GND
PGND 16
6 SYNC
VCC 15
7 CT
OUTC 14
8 RT
OUTD 13
9 DELAB
CS 12
10 DELCD
ADS 11
Q1
VBIAS
AC
B
VOUT
VIN
D
UDG−98139
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




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UCC2895-EP Datasheet Preview

UCC2895-EP Datasheet

Phase-Shift PWM Controller

No Preview Available !

UCC2895-EP
SCBS809G – DECEMBER 2005 – REVISED SEPTEMBER 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Description ............................................................. 1
3 Revision History..................................................... 2
4 Pin Configuration and Functions ......................... 3
5 Specifications......................................................... 6
5.1 Absolute Maximum Ratings ...................................... 6
5.2 ESD Ratings.............................................................. 6
5.3 Recommended Operating Conditions....................... 6
5.4 Thermal Information .................................................. 7
5.5 Electrical Characteristics........................................... 7
5.6 Typical Characteristics ............................................ 10
6 Application and Implementation ........................ 11
6.1 Programming DELAB, DELCD, and Adaptive Delay
Set (ADS) ................................................................. 11
6.2 Circuit Description ................................................... 14
7 Device and Documentation Support.................. 16
7.1 Receiving Notification of Documentation Updates.. 16
7.2 Community Resources............................................ 16
7.3 Trademarks ............................................................. 16
7.4 Electrostatic Discharge Caution .............................. 16
7.5 Glossary .................................................................. 16
8 Mechanical, Packaging, and Orderable
Information ........................................................... 17
3 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision F (October 2009) to Revision G
Page
• 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 section ...... 1
• Changed RAMP sink current MIN from 12 mA : to 10 mA..................................................................................................... 8
• Changed VOL MAX from 270 mV : to 330 mV ........................................................................................................................ 9
2 Submit Documentation Feedback
Copyright © 2005–2017, Texas Instruments Incorporated
Product Folder Links: UCC2895-EP


Part Number UCC2895-EP
Description Phase-Shift PWM Controller
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