Datasheet

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SLUS577C − SEPTEMBER, 2003 − REVISED MARCH 2009
20
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APPLICATION INFORMATION
Figure 12
VFF − Feedforward Voltage − V
1.0 2.0 3.0 4.0 5.0
100
300
400
500
0
200
VAOUT = 3 V
VAOUT = 2 V
VAOUT = 4 V
VAOUT = 5 V
(VFF × I
MOUT
) − µW
MULTIPLIER CONSTANT POWER PERFORMANCE
0.0
References and Resources:
Application Note, Differences Between UCC3817A/18A/19A and UCC3817/18/19, Texas Instruments
Literature Number SLUA294
Evaluation Module, UCC3817EVM, 385V, 250W PFC Boost Converter
User’s Guide, UCC3817 BiCMOS Power Factor Preregulator Evaluation Board, Texas Instruments Literature
Number SLUU077
Application Note, Synchronizing a PFC Controller from a Down Stream Controller Gate Drive, Texas
Instruments Literature Number SLUA245
Seminar topic, High Power Factor Switching Preregulator Design Optimization, L.H. Dixon, SEM−700,1990.
Seminar topic, High Power Factor Preregulator for Off−line Supplies, L.H. Dixon, SEM−600, 1988.
Related Products
DEVICE DESCRIPTION CONTROL METHOD TYPICAL POWER LEVEL
UC3854 PFC controller ACM
(2)
200 W to 2 kW+
UC3854A/B Improved PFC controller ACM
(2)
200 W to 2 kW+
UC3855A/B High performance soft switching PFC controller ACM
(2)
400 W to 2 kW+
UCC38050/1 Transition mode PFC controller CRM
(1)
50 W to 400 W
UCC3819 Tracking boost PFC controller ACM
(2)
75 W to 2 kW+
UCC28510/11/12/13 Advanced PFC+PWM combo controller ACM
(2)
75 W to 1kW+
UCC28514/15/16/17 Advanced PFC+PWM combo controller ACM
(2)
75 W to 1kW+
NOTES: (1). Critical conduction mode
(2). Average current mode