8-Pin Quasi Resonant Flyback Green Mode Controller  - UCC28600


8-Pin Quasi Resonant Flyback Green Mode Controller


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.

The Design Calculator, (Texas Instruments Literature number SLVC104), located in the Tools and Software section of the UCC28600 product folder, provides a user-interactive iterative process for selecting recommended component values for an optimal design.


  • 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
    • Cycle-by-Cycle Power Limit
    • 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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Parametrics Compare all products in PWM and Resonant Controller

Control Method
Duty Cycle (Max) (%)
Frequency (Max) (kHz)
UVLO Thresholds On/Off (V)
Regulated Outputs (#)
Special Features
Operating Temperature Range (C)
Approx. Price (US$)
UCC28600 LM5023 UCC28610 UCC28710 UCC28740
Flyback     Flyback     Flyback     Flyback     Flyback    
Current     Current     Current     Current     Current    
99         99     99    
130     130     130     100     100    
10.3/9.3       10.2/8     21/8     21/7.75    
1     1     1     1      
Error Amplifier
Green Mode
Light Load Efficiency    
Green Mode
Light Load Efficiency    
Soft Switching     Green Mode
HV Start-up
Input Line Monitor
Leading Edge Blanking
Light Load Efficiency
Low Power
Soft Start    
Low Power
Light Load Efficiency
Soft Switching
Current Limiting
HV Start-up
Green Mode
Input Line Monitor
Leading Edge Blanking
Soft Start    
Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 105     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
8SOIC     8VSSOP     8PDIP
7SOIC     7SOIC    
0.40 | 1ku     0.38 | 1ku     0.40 | 1ku     0.42 | 1ku     0.42 | 1ku    

Other qualified versions of UCC28600

Version Part Number Definition
Automotive UCC28600-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
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