NXP Semiconductors AN10907, Примечание к применению

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Application note Rev. 1 — 28 December 2010 50 of 82
NXP Semiconductors
AN10907
TEA1613T resonant power supply control IC
9.4 Advantages of burst mode for HBC and PFC simultaneously
The TEA1613T provides a burst mode system that simultaneously switches the HBC and
PFC. In this way, during the burst period, the power is transferred directly from the input to
the output. The HBC determines the repetition time of the burst and the PFC follows. In
the burst period, the PFC operates in normal regulation.
Power consumption is further reduced by PFC bursting. Examples of results obtained are
shown in
Figure 36 , Figure 37 and Figure 38 .
Fig 36. Increased efficiency at low output power in burst HBC and PFC (90 W adapter)
Fig 37. Remaining 90 W adapter losses in burst mode
P
o
(W)
0 100 80 40 60 20
001aal460
70
80
60
90
100
efficiency
(%)
50
P
o
(W)
0 1.0 0.8 0.4 0.6 0.2
001aal461
1.0
1.5
0.5
2.0
2.5
P
i
(W)
0