UCC28600 Datasheet, PDF (1/25 Pages) Texas Instruments – 8-PIN QUASI-RESONANT FLYBACK GREEN MODE CONTROLLER

UCC28600
www.ti.com
SLUS646B – NOVEMBER 2005 – REVISED MAY 2006
8-PIN QUASI-RESONANT FLYBACK GREEN MODE CONTROLLER
FEATURES
• 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 to 150 mW
• Low Startup Current: 25 µA Maximum
• Programmable Overvoltage Protection, Line
and Load
• Internal Overtemperature Protection:
Prevents Restart Until Temperature Fault
Cleared
• Current Limit Protection
– Cycle-by-Cycle Power Limit
– Overcurrent Hiccup Restart Mode
• 1-A Sink TrueDrive™, -0.75-A Source Gate
Drive Output
• Programmable Soft-Start
• Greenmode STATUS pin (PFC Disable
Function)
TYPICAL APPLICATION
APPLICATIONS
• 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
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 burst 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 temperature range is -40°C to 105°C.
Primary Secondary
UCC28051
1 VO_SNS VCC 8
2 COMP DRV 7
3 MULTIN GND 6
4 CS
ZCD 5
C_BULK
18 V
Q_ST
R_ST2
R_ST1
C_SS
UCC28600
1 SS STATUS 8
2 FB OVP 7
3 CS VDD 6
Feedback
4 GND OUT 5
R_SU
R_DD
N_P
N_S
N_B
C_DD
R_OVP1
R_{OVP2 M1}
C_BP
R_PL
TL431
R_CS
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.
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 © 2005–2006, Texas Instruments Incorporated