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UCC2941-3/-5/-ADJ
UCC3941-3/-5/-ADJ
Figure 10. Pseudo continuous mode operation.
VOUT RIPPLE
20mV/DIV
IINDUCTOR CURRENT
0.2A/DIV
L = 22 H
C = 100 F
CVGD = 22 H
RPL = 6
VIN = 1.25
IOUT = 100mA
20 s/DIV
Figure 9. Dual output example.
APPLICATION INFORMATION (cont.)
T1:
VOUT is service and inductor current goes continuous.
T2:
VGD is serviced with discontinuous operation and reaches 1st threshold (7.5V).
T3:
VOUT requires servicing so since VGD has at least reached its first threshold of 7.5V the VOUT has priority.
T4:
VOUT is satisfied and VGD is serviced until 2nd threshold is reached.
T5:
Both outputs are satisfied.
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