Datasheet

UCC28950
SLUSA16B –MARCH 2010– REVISED OCTOBER 2011 www.ti.com
REVISION HISTORY
Changes from Original (March 2010) to Revision A Page
• Changed UCC28950 Typical Application Diagram ............................................................................................................... 1
• Changed Converter switching frequency from 1400 kHz to 1000 kHz ................................................................................. 3
• Changed Functional Block Diagram ..................................................................................................................................... 8
• Changed Typical Application Diagram .................................................................................................................................. 8
• Added Figure 6 ................................................................................................................................................................... 15
• Changed Equation .............................................................................................................................................................. 16
• Added Typical Application Diagram .................................................................................................................................... 16
• Added always deliver even number of Power cycles to Power transformer. ..................................................................... 18
• Deleted deliver either one or two power delivery cycle pulses. If controller delivers a power delivery cycle for OUTB
and OUTC, then it stops. If it starts delivering to OUTA and OUTD, then it continues with another power delivery
cycle to OUTB and OUTC, and then it stops. ..................................................................................................................... 18
Changes from Revision A (July 2010) to Revision B Page
• Added Naturally Handles Pre-Biased Start Up with DCM Mode bullet ................................................................................ 1
• Changed Server, Telecom Power Supplies bullet to Server, Power Supplies ..................................................................... 1
• Added Datacom, Telecom, and Wireless Base-Station Power ............................................................................................ 1
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