UCC28600
www.ti.com
SLUS646J –NOVEMBER 2005–REVISED JULY 2011
8-Pin Quasi-Resonant Flyback Green-Mode Controller
Check for Samples: UCC28600
1
FEATURES
APPLICATIONS
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•
Green-Mode Controller With Advanced Energy
Saving Features
•
Bias Supplies for LCD-Monitors, LCD-TV,
PDP-TV, and Set Top Boxes
•
Quasi-Resonant Mode Operation for Reduced
EMI and Low Switching Losses (Low Voltage
Switching)
•
•
AC/DC Adapters and Offline Battery Chargers
Energy Efficient Power Supplies up to 200 W
•
Low Standby Current for System No-Load
Power Consumption
Low Startup Current: 25 μA Maximum
Programmable Overvoltage Protection, Line
and Load
Internal Overtemperature Protection
Current Limit Protection
DESCRIPTION
The UCC28600 is a PWM controller with advanced
energy features to meet stringent world-wide energy
efficiency requirements.
•
•
UCC28600 integrates built-in advanced energy
saving features with high level protection features to
provide cost effective solutions for energy efficient
power supplies. UCC28600 incorporates frequency
fold back and green mode operation to reduce the
operation frequency at light load and no load
operations.
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•
–
–
Cycle-by-Cycle Power Limit
Primary-Side Overcurrent Hiccup Restart
Mode
•
1-A Sink TrueDrive™, -0.75-A Source Gate
UCC28600 is offered in the 8-pin SOIC (D) package.
Operating junction temperature range is -40°C to
105°C.
Drive Output
Programmable Soft-Start
Green-Mode Status Pin (PFC Disable Function)
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•
.
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TYPICAL APPLICATION
Primary
NP
Secondary
CBULK
RSU
NS
NB
CB
18 V
ROVP1
UCC28600
CSS
1
2
3
4
SS STATUS
8
7
6
5
CVDD
UCC28051
1
2
3
4
VO_SNS VCC
8
7
6
5
FB
OVP
VDD
OUT
ROVP2
COMP
DRV
CS
MULTIN GND
GND
Feedback
M1
CS
ZCD
CBP
RPL
RCS
TL431
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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.
TrueDrive is a trademark of Texas Instruments.
2
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.
Copyright © 2005–2011, Texas Instruments Incorporated