Performance Data and Typical Characteristic Curves
Figure 20. Output Short Circuit Protection
(Short circuit maintained on output; note the output current goes to 4.62 A, refer to equation 13 in the
data sheet, during the 250-ms delay to overload fault, t
OL
, and retries after t
RETRY
= 750 ms. Input voltage =
85 V
AC
. Ch.1 = I
OUT
, 1 A/div., Ch. 3 = V
OUT
, 1 V/div.)
Figure 21. Output Over Voltage Protection
(The EVM was tested with an open FB loop, no load. OVP threshold is equal to 15.44 V. Ch. 3 = V
OUT
, 2
V/div., offset by 4 V.)
20
UCC28610EVM-474 25-W Universal Off-Line Flyback Converter
SLUU383B
–
November 2009
–
Revised May 2011
Copyright
©
2009
–
2011, Texas Instruments Incorporated
