UCC2895-EP_15 Datasheet, PDF (1/21 Pages) Texas Instruments – BiCMOS ADVANCED PHASE-SHIFT PWM CONTROLLER

UCC2895-EP
www.ti.com
SCBS809F – DECEMBER 2005 – REVISED OCTOBER 2009
BiCMOS ADVANCED PHASE-SHIFT PWM CONTROLLER
Check for Samples: UCC2895-EP
FEATURES
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• Programmable Output Turn-On 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 Lock Out (150 μA Typ)
SUPPORTS DEFENSE, AEROSPACE,
AND MEDICAL APPLICATIONS
• Controlled Baseline
• One Assembly/Test Site
• One Fabrication Site
• Available in Military (–55°C/125°C)
Temperature Range⁽¹⁾
• Extended Product Life Cycle
• Extended Product-Change Notification
• Product Traceability
DW PACKAGE
(TOP VIEW)
EAN 1
EAOUT 2
RAMP 3
REF 4
GND 5
SYNC 6
CT 7
RT 8
DELAB ⁹
DELCD ¹⁰
20 EAP
19 SS/DISB
18 OUTA
17 OUTB
16 PGND
15 VDD
14 OUTC
13 OUTD
12 _CS
11 _ADS
(1) Additional temperature ranges available - contact factory
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.
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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.
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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