SLUS646J
–
NOVEMBER 2005
–
REVISED JULY 2011
8-Pin Quasi-Resonant Flyback Green-Mode Controller
Check for Samples:
1
FEATURES
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Green-Mode Controller With Advanced Energy
Saving Features
Quasi-Resonant Mode Operation for Reduced
EMI and Low Switching Losses (Low Voltage
Switching)
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
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Cycle-by-Cycle Power Limit
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Primary-Side Overcurrent Hiccup Restart
Mode
1-A Sink TrueDrive™, -0.75-A Source Gate
Drive Output
Programmable Soft-Start
Green-Mode Status Pin (PFC Disable Function)
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APPLICATIONS
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Bias Supplies for LCD-Monitors, LCD-TV,
PDP-TV, and Set Top Boxes
AC/DC Adapters and Offline Battery Chargers
Energy Efficient Power Supplies up to 200 W
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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.
UCC28600 is offered in the 8-pin SOIC (D) package.
Operating junction temperature range is -40°C to
105°C.
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TYPICAL APPLICATION
Primary
Secondary
C
BULK
R
SU
N
P
N
S
C
B
N
B
18 V
C
SS
1
UCC28051
1
VO_SNS
VCC
8
2
FB
OVP
7
R
OVP2
2
COMP
DRV
7
3
CS
VDD
6
UCC28600
SS
STATUS
8
R
OVP1
C
VDD
3
MULTIN
GND
6
Feedback
4
GND
OUT
5
M
1
4
CS
ZCD
5
C
BP
R
PL
R
CS
TL431
1
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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.
Copyright
©
2005–2011, Texas Instruments Incorporated
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.